Document And Entity Information Note To Financial Statement Details Textual Significant Accounting Policies Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block] crex_ClassOfWarrantOrRightWeightedAverageRemainingContractualTerm Class of Warrant or Right, Weighted Average Remaining Contractual Term (Year) Weighted average remaining contractual term for warrants or rights outstanding. Note 2 - Summary of Significant Accounting Policies Note 4 - Revenue Recognition Note 6 - Supplemental Cash Flow Statement Information Note 7 - Intangible Assets, Including Goodwill Note 8 - Debt Long-term debt Note 12 - Stock-based Compensation Other Services [Member] Related to other services. Note 2 - Summary of Significant Accounting Policies - Allowance for Credit Loss (Details) crex_WorkingCapital Working Capital The amount of working capital. Share-Based Payment Arrangement, Employee [Member] Note 2 - Summary of Significant Accounting Policies - Inventories (Details) Income Tax Disclosure [Text Block] Note 4 - Revenue Recognition - Disaggregation of Revenue (Details) crex_FloatingMarginAtGreaterOrEqualTo11ButLessThan21SeniorFundedDebtToEbitdaRatio Greater or equal than 1.00 but less than 2.00 In reference to the floating margin in relation to the senior funded and EBITDA ratio at Greater or Equal to 1:1 but Less than 2:1 Note 6 - Supplemental Cash Flow Statement Information - Supplemental Cash Flow Statement Information (Details) crex_FloatingMarginAtLessThan11SeniorFundedDebtToEbitdaRatio Less than 1.00 In reference to the floating margin in relation to the senior funded and EBITDA ratio at less than 1. Note 7 - Intangible Assets, Including Goodwill - Intangible Assets (Details) crex_FloatingMarginAtGreaterOrEqualTo31SeniorFundedDebtToEbitdaRatio Greater or equal to 3.00 In reference to the floating margin in relation to the senior funded and EBITDA ratio at Greater or Equal to 3:1 Note 8 - Debt - Schedule of Outstanding Debt (Details) Amortization of stock-based compensation Other non-current assets Short-term contingent consideration, at fair value Share-Based Payment Arrangement, Nonemployee [Member] Note 8 - Debt - Floating Margin (Details) crex_FloatingMarginAtGreaterOrEqualTo21ButLessThan31SeniorFundedDebtToEbitdaRatio Greater or equal than 2.00 but less than 3 In reference to the floating margin in relation to the senior funded and EBITDA ratio at Greater or Equal to 2:1 but Less than 3:1 us-gaap_LiabilitiesCurrent Total Current Liabilities Note 12 - Stock-based Compensation - Summary of Outstanding Options (Details) Time Vesting Awards [Member] Represents time vesting awards. Schedule of Debt [Table Text Block] Note 12 - Stock-based Compensation - Stock Option Activity (Details) Performance Vesting Awards [Member] Represents performance vesting awards. Notes To Financial Statements Notes To Financial Statements [Abstract] Earnings Per Share, Policy [Policy Text Block] us-gaap_BusinessCombinationConsiderationTransferred1 Business Combination, Consideration Transferred crex_NumberOfMajorVendors Number of Major Vendors Represents number of major vendors. Operating expenses: us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred Business Combination, Consideration Transferred, Liabilities Incurred Two Vendors [Member] Represents two vendors. Amortization of debt discount Income Tax, Policy [Policy Text Block] Share-Based Payment Arrangement, Option, Activity [Table Text Block] crex_NumberOfMajorCustomers Number of Major Customers Represents the numbers of major customers. us-gaap_BusinessAcquisitionSharePrice Business Combination, Price Per Share (in dollars per share) Time Vesting Options [Member] Represents time vesting options. Range One [Member] Represents range one. Range Two [Member] Represents range two. Schedule of Finite-Lived Intangible Assets [Table Text Block] crex_DebtInstrumentInterestRateStatedPercentageIncludingSecuredOvernightFinancingRate Debt Instrument, Interest Rate, Stated Percentage Including Secured Overnight Financing Rate In reference to a stated percentage including the Secured Overnight Financing Rate (SOFR) crex_LineOfCreditFacilityUncommittedAccordionFeature Line of Credit Facility, Uncommitted Accordion Feature In reference to an uncommitted Accordion feature. crex_DebtInstrumentFloatingMargin Debt Instrument, Floating Margin In reference to the floating margin Performance Vesting Options [Member] Represents performance vesting options. Short-term debt Less: Current portion us-gaap_AssetsCurrent Total Current Assets us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term (Year) Equity [Text Block] Gain on change in fair value of contingent consideration Common stock, $0.01 par value, 66,666 shares authorized; 10,447 and 10,447 shares issued and outstanding, respectively Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice Balance, Weighted Average Exercise Price (in dollars per share) Balance, Weighted Average Exercise Price (in dollars per share) Common stock, shares authorized (in shares) Common stock, shares issued (in shares) Deferred revenues Forfeited or expired, Weighted Average Exercise Price (in dollars per share) Common stock, par value (in dollars per share) Goodwill and Intangible Assets Disclosure [Text Block] Granted, Weighted Average Exercise Price (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) Revenue from Contract with Customer [Policy Text Block] Accrued expenses and other current liabilities Statistical Measurement [Domain] Operating leases Maximum [Member] Minimum [Member] Weighted Average [Member] Accounts payable Product and Service [Axis] Revolving Credit Facility [Member] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber Balance, Number (in shares) Balance, Number (in shares) Product and Service [Domain] Statistical Measurement [Axis] Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Property and equipment in accounts payable us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod Forfeited or expired, Number (in shares) Credit Facility [Axis] Credit Facility [Domain] us-gaap_NumberOfReportingUnits Number of Reporting Units Interest us-gaap_PolicyTextBlockAbstract Accounting Policies Cash Flow, Supplemental Disclosures [Text Block] Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Geographical [Axis] Goodwill and Intangible Assets, Policy [Policy Text Block] Geographical [Domain] Trademarks and Trade Names [Member] Inventories, net Total inventories crex_RevenueRecognitionCommissionPercentageOnRevenue Revenue Recognition, Commission Percentage on Revenue Represents the commission percentage from revenue contracts recognized for the period. us-gaap_PaymentsToDevelopSoftware Capitalization of labor for software development Total sales us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Purchases of property and equipment us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) Customer [Axis] Customer [Domain] Grantee Status [Domain] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) Grantee Status [Axis] Income taxes, net Current Liabilities: Raw materials us-gaap_Assets Total Assets Deferred revenue Plan Name [Axis] Technology-Based Intangible Assets [Member] Plan Name [Domain] Accounts receivable, net us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Operating Activities: Customer Relationships [Member] Statement [Line Items] us-gaap_NumberOfReportableSegments Number of Reportable Segments Additional paid-in capital Sales Share-Based Payment Arrangement [Text Block] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Reflect Systems, Inc. [Member] Represents Reflect Systems, Inc. us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet Debt Issuance Costs, Line of Credit Arrangements, Net Shareholders’ Equity us-gaap_OtherNonoperatingIncomeExpense Other expense (income) us-gaap_NonoperatingIncomeExpense Total other expenses (income) Segment Reporting Disclosure [Text Block] Award Type [Domain] Current Assets: Fair Value Disclosures [Text Block] Award Type [Axis] Net income (loss) Net income (loss) Finite-Lived Intangible Assets, Accumulated Amortization us-gaap_FiniteLivedIntangibleAssetsNet Net book value of amortizable intangible assets us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Inventory, Policy [Policy Text Block] us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Increase (decrease) in cash and cash equivalents Finite-Lived Intangible Assets, Gross us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash provided by (used in) financing activities us-gaap_Liabilities Total Liabilities us-gaap_OperatingIncomeLoss Operating Income (Loss) Operating loss us-gaap_NetCashProvidedByUsedInOperatingActivities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash (used in) provided by operating activities Other expenses (income): us-gaap_DeferredTaxLiabilities Deferred Tax Liabilities, Net us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities Prepaid expenses and other current assets us-gaap_GrossProfit Gross profit Total cost of sales Provision for inventory reserves Commitments and Contingencies Disclosure [Text Block] Business Combination [Text Block] Property and equipment, net Goodwill us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities Settlement of contingent consideration Long-Term Debt, Type [Axis] Long-Term Debt, Type [Domain] Cost of sales Investing activities us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet Other, net Retained Earnings [Member] Customer Two [Member] Represents customer two. Additional Paid-in Capital [Member] CANADA Common Stock [Member] us-gaap_IncomeTaxExpenseBenefit Income Tax Expense (Benefit) Provision for income taxes Increase (Decrease) in Accrued Liabilities Equity Components [Axis] Equity Component [Domain] Customer Four [Member] Represents customer four. Customer Three [Member] Represents customer three us-gaap_LongTermDebt Total debt, net Accounts payable us-gaap_IncreaseDecreaseInAccountsPayable us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] us-gaap_ClassOfWarrantOrRightOutstanding Class of Warrant or Right, Outstanding (in shares) Debt Instrument Redemption [Table Text Block] us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Net income (loss) before income taxes us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) us-gaap_OperatingExpenses Total operating expenses General and administrative expenses us-gaap_LineOfCredit Long-Term Line of Credit us-gaap_Cash Cash Cash and cash equivalents Interest expense, including amortization of debt discount Subordinated Debt [Member] us-gaap_DeferredFinanceCostsNet Less: Deferred financing costs Disaggregation of Revenue [Table Text Block] us-gaap_AllocatedShareBasedCompensationExpense Share-Based Payment Arrangement, Expense Revenue from Contract with Customer [Text Block] Hardware [Member] Represents hardware. Service and Other [Member] Represents service and other. Cash and Cash Equivalents, Policy [Policy Text Block] Document Quarterly Report Customer deposits The current portion of money or property received from customers which is either to be returned upon satisfactory contract completion or applied to customer receivables in accordance with the terms of the contract or the understanding. Amendment Flag Entity Incorporation, State or Country Code us-gaap_UnrecognizedTaxBenefits Unrecognized Tax Benefits, Ending Balance us-gaap_DebtInstrumentCarryingAmount Total debt, gross Accounting Policies [Abstract] Issuance Date Issuance Date Significant Accounting Policies [Text Block] Media [Member] Represents media. Document Transition Report City Area Code Basis of Accounting, Policy [Policy Text Block] Maturity Date us-gaap_DebtInstrumentMaturityDate Use of Estimates, Policy [Policy Text Block] us-gaap_DebtInstrumentPeriodicPayment Debt Instrument, Periodic Payment New Accounting Pronouncements, Policy [Policy Text Block] Entity Interactive Data Current us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid One Vendor [Member] Represents one vendor. us-gaap_SharesOutstanding Balance (in shares) Balance (in shares) Security Exchange Name Common stock, shares outstanding (in shares) Title of 12(b) Security us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs Write-offs charged against the allowance crex_DepreciationDepletionAndAmortizationExcludingAmortizationOfDebtDiscountPremium Depreciation and amortization The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets, excluding amortization of debt discount or premium. Current Fiscal Year End Date Interest rate Debt Instrument, Interest Rate, Stated Percentage crex_IncreaseDecreaseInCustomerDeposit Customer deposits The increase (decrease) during the reporting period in obligations arising from customer deposits. us-gaap_DebtInstrumentInterestRateEffectivePercentage Debt Instrument, Interest Rate, Effective Percentage us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets Prepaid expenses and other current assets Document Fiscal Period Focus Document Fiscal Year Focus Right-of-use assets obtained in exchange for new finance lease liabilities Document Period End Date Entity File Number crex_RevenueRecognitionContractTerm Revenue Recognition, Contract Term (Month) Represents contract term under revenue recognition. Software Licensing and Delivery [Member] Represents software licensing and delivery. Entity Emerging Growth Company Support Service [Member] Represents support service. us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Document Type Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Entity Small Business Entity Shell Company One Customer [Member] Represents one customer. Document Information [Line Items] Document Information [Table] Service [Member] Installation Services [Member] Represents installation services. Entity Filer Category Entity Current Reporting Status Managed Services [Member] Represents managed services. us-gaap_RepaymentsOfNotesPayable Repayment of term debt us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) us-gaap_GoodwillImpairmentLoss Goodwill, Impairment Loss Issuance of warrants Weighted average shares outstanding - diluted (in shares) us-gaap_RepaymentsOfLinesOfCredit Repayment of borrowings under revolving credit facility us-gaap_ConcentrationRiskPercentage1 Concentration Risk, Percentage us-gaap_IncreaseDecreaseInAccountsReceivable Accounts receivable Entity Tax Identification Number Entity Central Index Key Entity Registrant Name Proceeds from borrowings under revolving credit facility Entity [Domain] Customer Concentration Risk [Member] Legal Entity [Axis] Statement [Table] Entity Address, Address Line One Supplier Concentration Risk [Member] Statement of Financial Position [Abstract] Diluted earning (loss) per common share (in dollars per share) Weighted average shares outstanding - basic (in shares) us-gaap_AmortizationOfIntangibleAssets Amortization of Intangible Assets ecd_NonRule10b51ArrTrmntdFlag Non-Rule 10b5-1 Arrangement Terminated [Flag] Entity Address, City or Town ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Entity Address, Postal Zip Code Accounts Payable [Member] Business Combination [Axis] Basic earning (loss) per common share (in dollars per share) Entity Address, State or Province Credit Loss, Financial Instrument [Policy Text Block] Business Combination [Domain] Concentration Risk Type [Axis] ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Concentration Risk Type [Domain] Material Terms of Trading Arrangement [Text Block] us-gaap_AllowanceForDoubtfulAccountsReceivable Balance as of beginning of period Balance as of end of period Statement of Cash Flows [Abstract] Entity Common Stock, Shares Outstanding Trading Arrangements, by Individual [Table] Statement of Stockholders' Equity [Abstract] Income Statement [Abstract] Revenue Benchmark [Member] us-gaap_BusinessCombinationContingentConsiderationLiability Business Combination, Contingent Consideration, Liability Accounts Receivable [Member] us-gaap_IncreaseDecreaseInInventories Inventories Trading Symbol Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Shares issued to employees pursuant to the Retention Bonus Plan (in shares) Retention Bonus Plan [Member] Represents the Retention Bonus Plan. Local Phone Number Shares issued to employees pursuant to the Retention Bonus Plan us-gaap_TableTextBlock Notes Tables Market Vesting Options [Member] Represents market vesting options. us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity Settlement Warrants [Member] Represents the settlement warrants. crex_BusinessAcquisitionThresholdTradingDays Business Acquisition, Threshold Trading Days (Day) The threshold trading days for business acquisition. crex_WarrantsAndRightsFairValuePerShare Warrants and Rights, Fair Value Per Share (in dollars per share) Per share fair value of warrants and rights. crex_DebtInstrumentInterestRateDefaultPercentage Debt Instrument, Interest Rate, Default Percentage Contractual interest rate for funds borrowed, under the debt agreement, in the event of default. crex_DebtInstrumentCovenantMaximumSeniorFundedDebtToEbitdaYearTwo Debt Instrument, Covenant, Maximum Senior Funded Debt to EBITDA, Year Two Maximum ratio of senior funded debt to EBITDA for year two under covenant of the debt instrument. crex_DebtInstrumentCovenantMaximumSeniorFundedDebtToEbitdaYearOne Debt Instrument, Covenant, Maximum Senior Funded Debt to EBITDA, Year One Maximum ratio of senior funded debt to EBITDA for year one under covenant of the debt instrument. Stock-based compensation us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation Issuance of warrants as partial settlement of contingent consideration The value of warrants issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. crex_GainLossOnBusinessCombinationSettlement Gain (Loss) on Business Combination Settlement Gain on settlement of contingent consideration Amount of gain (loss) on settlement of business combination. Granted, Number (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) Financing activities us-gaap_WarrantsAndRightsOutstandingMeasurementInput Warrants and Rights Outstanding, Measurement Input us-gaap_WarrantsAndRightsOutstandingTerm Warrants and Rights Outstanding, Term (Year) Sales and marketing expenses Other non-current liabilities Issuance of term note as partial settlement of contingent consideration The value of notes issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. us-gaap_LiabilitiesAndStockholdersEquity Total Liabilities and Shareholders’ Equity Work-in-process Purchased and Developed Software [Member] Represents purchased and developed software. Accumulated deficit Retained Earnings (Accumulated Deficit) Measurement Input, Share Price [Member] Debt Disclosure [Text Block] Measurement Input, Price Volatility [Member] Changes to operating assets and liabilities: us-gaap_StockholdersEquity Total Shareholders’ Equity Balance Balance Capitalized software in accounts payable Amount of capitalized software in accounts payable. Measurement Input, Risk Free Interest Rate [Member] Amortization of deferred financing costs us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements Measurement Input, Expected Dividend Rate [Member] Subsequent Event [Member] Long-term obligations under operating leases Measurement Input, Expected Term [Member] Supplier [Axis] Schedule of Inventory, Current [Table Text Block] Class of Stock [Axis] Supplier [Domain] us-gaap_LongTermDebtNoncurrent Total long-term debt, net us-gaap_PaymentsToAcquireBusinessesGross Payments to Acquire Businesses, Gross Subsequent Event Type [Axis] Current maturities of operating leases Revolving credit facility Subsequent Event Type [Domain] Other intangible assets, net Outstanding, Weighted Average Exercise Price (in dollars per share) Outstanding, Weighted Average Remaining Contractual Term (Year) Shares Exercisable (in shares) Exercisable, Weighted Average Exercise Price (in dollars per share) Operating lease right-of-use assets Upper Range Limit (in dollars per share) us-gaap_FinanceLeasePrincipalPayments Principal payments on finance leases Deferred income taxes Shares Outstanding (in shares) Measurement Input Type [Axis] Exercise Price Range [Axis] Measurement Input Type [Domain] Exercise Price Range [Domain] Lower Range Limit (in dollars per share)