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 5 - Supplemental Cash Flow Statement Information Note 6 - Intangible Assets, Including Goodwill Note 7 - Loans Payable Note 11 - Stock-based Compensation Warrants (in shares) 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) Note 5 - Supplemental Cash Flow Statement Information - Supplemental Cash Flow Statement Information (Details) Note 6 - Intangible Assets, Including Goodwill - Intangible Assets (Details) Amortization of stock-based compensation Note 7 - Loans Payable - Outstanding Debt (Details) Other non-current assets Short-term portion of contingent consideration, at fair value Share-Based Payment Arrangement, Nonemployee [Member] us-gaap_LiabilitiesCurrent Total Current Liabilities Note 11 - Stock-based Compensation - Summary of Outstanding Options (Details) Reverse Stock Split [Member] The conversion of a reverse stock split where there is a reduction in the shares outstanding. Note 11 - Stock-based Compensation - Stock Option Activity (Details) Time Vesting Awards [Member] Represents time vesting awards. Schedule of Debt [Table Text Block] Notes To Financial Statements Business Combinations Policy [Policy Text Block] Performance Vesting Awards [Member] Represents performance vesting awards. Notes To Financial Statements [Abstract] Earnings Per Share, Policy [Policy Text Block] crex_NumberOfMajorVendors Number of Major Vendors Represents number of major vendors. Operating expenses: Two Vendors [Member] Represents two vendors. Amortization of debt discount Income Tax, Policy [Policy Text Block] Acquisition Loan With Slipstream [Member] Represents acquisition loan with Slipstream. Share-Based Payment Arrangement, Option, Activity [Table Text Block] crex_NumberOfMajorCustomers Number of Major Customers Represents the numbers of major customers. 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] us-gaap_DebtCurrent Debt, Current us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 Stockholders' Equity Note, Stock Split, Conversion Ratio Performance Vesting Options [Member] Represents performance vesting options. us-gaap_LongTermDebtCurrent Less current maturities Loans payable, current 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] Change in fair value of contingent consideration Common stock, $0.01 par value, 66,666 shares authorized; 10,447 and 10,409 shares issued and outstanding, respectively Adjustments to reconcile net loss to net cash 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 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) Common Stock, Par or Stated Value Per Share (in dollars per share) Goodwill and Intangible Assets Disclosure [Text Block] Granted, Weighted Average Exercise Price (in dollars per share) Revenue from Contract with Customer [Policy Text Block] Accrued expenses and other current liabilities Amended Term Loan 2023 [Member] Relating to the 2023 Amended Term loan. Statistical Measurement [Domain] Operating leases Maximum [Member] Minimum [Member] Weighted Average [Member] Accounts payable Product and Service [Axis] 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) Interest us-gaap_PolicyTextBlockAbstract Accounting Policies Cash Flow, Supplemental Disclosures [Text Block] Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Goodwill and Intangible Assets, Policy [Policy Text Block] 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 us-gaap_ProceedsFromLoans Proceeds from Loans Total sales us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Purchases of property and equipment Customer [Axis] Customer [Domain] Grantee Status [Domain] Grantee Status [Axis] Income taxes, net Noncompete Agreements [Member] 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] crex_BusinessAcquisitionContingentConsiderationMaximumSharePrice Business Acquisition, Contingent Consideration, Maximum Share Price (in dollars per share) Maximum per share or per unit price of contingent consideration in business acquisition. Additional paid-in capital crex_BusinessCombinationContingentConsiderationBillableDevicesOnlineMaximumSharePrice Business Combination, Contingent Consideration, Billable Devices Online, Maximum Share Price (in dollars per share) Maximum per share or per unit price if billable devices online hits threshold for contingent consideration in business combination. crex_BusinessAcquisitionExtensionOptionMinimumExtensionThresholdPrice Business Acquisition, Extension Option, Minimum Extension Threshold Price Percentage Percentage of minimum extension threshold price per share for extension option un business acquisition. 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. Senior Secured Term Loan [Member] Represents the senior secured term loan. Shareholders' Equity Consolidated Term Loan [Member] Represents the consolidated term loan. Secured Promissory Note [Member] Represents Secured Promissory Note. crex_BusinessAcquisitionExtensionOptionMinimumExtensionThresholdPricePercentageIncreaseInPrice Business Acquisition, Extension Option, Minimum Extension Threshold Price Percentage, Increase in Price The minimum percentage of extension threshold price for an increase in price for extension option in a business acquisition. crex_BusinessAcquisitionExtensionOptionMinimumExtensionThresholdPriceIncreaseInPrice Business Acquisition, Extension Option, Minimum Extension Threshold Price, Increase in Price (in dollars per share) Per share or per unit increase in price for minimum extension threshold price in extension option of a business acquisition. us-gaap_OtherNonoperatingIncomeExpense Other expense (income) us-gaap_NonoperatingIncomeExpense Total other expenses (income) Slipstream [Member] Represent Slipstream. Segment Reporting Disclosure [Text Block] Award Type [Domain] Current Assets: Fair Value Disclosures [Text Block] Award Type [Axis] Net loss Net 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 used in financing activities us-gaap_Liabilities Total Liabilities Director [Member] us-gaap_OperatingIncomeLoss Operating Income (Loss) Operating loss us-gaap_NetCashProvidedByUsedInOperatingActivities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Share-Based Payment Arrangement, Option [Member] 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 Commitments and Contingencies Disclosure [Text Block] Property and equipment, net Goodwill Cost of sales Investing activities Scenario [Domain] Forecast [Member] us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet Other, net Retained Earnings [Member] Title and Position [Domain] Title and Position [Axis] Scenario [Axis] Customer Two [Member] Represents customer two. crex_InvestmentOwnedBalancePercentageOfCommonStock Investment Owned, Balance, Percentage of Common Stock Number of shares of investment owned as percentage of common stock. Additional Paid-in Capital [Member] 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) us-gaap_ClassOfWarrantOrRightOutstanding Class of Warrant or Right, Outstanding (in shares) us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Net loss before income taxes us-gaap_OperatingExpenses Total operating expenses Secured Convertible Loan [Member] Represents secured convertible loan. General and administrative expenses Acquisition Term Loan [Member] Represents acquisition term loan. Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value crex_ProceedsFromLoansNet Proceeds from Loans, Net Net amount of cash received from principal payments made on loans related to operating activities. Consolidation Term Loan [Member] Represents consolidation term loan. us-gaap_DeferredFinanceCostsNet Debt discount crex_PercentageOfWarrantCoveredByDebt Percentage of Warrant Covered by Debt Represents amount of warrants covered by debt. Term Loan 2022 [Member] Represents term loan 2022. crex_NumberOfWarrantsCoveredByDebt Number of Warrants Covered by Debt (in shares) Represents number of warrants that are covered by debt. Disaggregation of Revenue [Table Text Block] us-gaap_AllocatedShareBasedCompensationExpense Share-Based Payment Arrangement, Expense Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Revenue from Contract with Customer [Text Block] Hardware [Member] Represents hardware. Service and Other [Member] Represents service and other. Loans payable, discount, current Loans payable, discount, noncurrent 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 General and Administrative Expense [Member] Total debt, gross us-gaap_DebtInstrumentCarryingAmount Accounting Policies [Abstract] 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_DebtInstrumentPeriodicPayment Debt Instrument, Periodic Payment Use of Estimates, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Entity Interactive Data Current Vendor [Member] Represents vendor. One Vendor [Member] Represents one vendor. Related Party [Member] 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_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 Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Domain] Entity File Number Nonmonetary Transaction Type [Domain] 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 us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Support Service [Member] Represents support service. Document Type Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Entity Small Business Entity Shell Company Nonmonetary Transaction Type [Axis] One Customer [Member] Represents one customer. Document Information [Line Items] Document Information [Table] Service [Member] Installation Services [Member] Represents installation services. Entity Filer Category Debt Instrument [Axis] Entity Current Reporting Status Debt Instrument, Name [Domain] Managed Services [Member] Represents managed services. us-gaap_RepaymentsOfNotesPayable Repayment of notes payable us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) Weighted average shares outstanding - diluted (in shares) us-gaap_ConcentrationRiskPercentage1 Concentration Risk, Percentage us-gaap_IncreaseDecreaseInAccountsReceivable Accounts receivable Entity Tax Identification Number Entity Central Index Key Depreciation and amortization expense Entity Registrant Name Entity [Domain] Legal Entity [Axis] Customer Concentration Risk [Member] Statement [Table] Entity Address, Address Line One Supplier Concentration Risk [Member] Statement of Financial Position [Abstract] Diluted 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 Acquisition [Axis] Basic loss per common share (in dollars per share) Entity Address, State or Province Business Acquisition, Acquiree [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 year Balance as of end of period Statement of Cash Flows [Abstract] Entity Common Stock, Shares Outstanding 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, net Trading Symbol Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Stock Issued During Period, Shares, Acquisitions (in shares) Retention Bonus Plan [Member] Represents the Retention Bonus Plan. Local Phone Number Stock Issued During Period, Value, Acquisitions us-gaap_TableTextBlock Notes Tables Market Vesting Options [Member] Represents market vesting options. Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Domain] Stock-based compensation (in shares) us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation Long-term contingent consideration, at fair value Bad debt expense us-gaap_ProvisionForDoubtfulAccounts Amounts accrued Stock-based compensation us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation Financing activities Granted, Number (in shares) Sales and marketing expenses Other non-current liabilities us-gaap_LiabilitiesAndStockholdersEquity Total Liabilities and Shareholders' Equity Work-in-process us-gaap_DebtInstrumentRepaidPrincipal Debt Instrument, Repaid, Principal Purchased and Developed Software [Member] Represents purchased and developed software. Accumulated deficit Retained Earnings (Accumulated Deficit) Research and development expenses In-process Internally Developed Software Platform [Member] Represents in-process internally developed software platform. Debt Disclosure [Text Block] Interest expense, including amortization of debt discount 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. us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements Long-term obligations under operating leases Supplier [Axis] Schedule of Inventory, Current [Table Text Block] Class of Stock [Axis] Supplier [Domain] Long term debt us-gaap_LongTermDebtNoncurrent Current maturities of operating leases Loans payable, noncurrent 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) Exercise Price Range [Axis] Exercise Price Range [Domain] Lower Range Limit (in dollars per share)