Document And Entity Information Statistical Measurement [Axis] Note To Financial Statement Details Textual Note 3 - Revenue Recognition Income tax expense Income Tax Expense (Benefit) Note 4 - Accounts Receivable, Transit Accounts Receivable and and Transit Accounts Payable ecd_NonRule10b51ArrTrmntdFlag Non-Rule 10b5-1 Arrangement Terminated [Flag] Note 5 - Property and Equipment ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Note 7 - Goodwill Trading Arrangements, by Individual [Table] Note 9 - Per Share Data Material Terms of Trading Arrangement [Text Block] Note 10 - Share-based Compensation Note 13 - Segment Information Note 16 - Leases us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) Note 3 - Revenue Recognition - Revenues Disaggregated by Revenue Source (Details) Note 4 - Accounts Receivable, Transit Accounts Receivable and and Transit Accounts Payable - Accounts Receivable (Details) Minimum [Member] Note 5 - Property and Equipment - Summary of Property and Equipment (Details) Note 7 - Goodwill - Changes in Carrying Amount of Goodwill (Details) us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (Gain) loss on foreign currency transactions Statistical Measurement [Domain] Note 9 - Per Share Data - Weighted Average Number of Common Shares (Details) Maximum [Member] us-gaap_SharePrice Share Price (in dollars per share) Note 9 - Per Share Data - Unissued Shares of Common Stock Were Reserved for the Following Purposes (Details) Note 10 - Share-based Compensation - Restricted Stock Units Activity (Details) Note 13 - Segment Information - Results of the Segments (Details) Note 13 - Segment Information - Revenues by Geographic Area (Details) Note 13 - Segment Information - Total Assets by Geographic Area (Details) Note 16 - Leases - Lease Expense (Details) Accounts payable and accrued expenses Note 16 - Leases - Cash Flow Information (Details) Note 16 - Leases - Balance Sheet Information (Details) Note 16 - Leases - Balance Sheet Information (Details) (Parentheticals) Note 16 - Leases - Maturities of Lease Liabilities (Details) Notes To Financial Statements Notes To Financial Statements [Abstract] Basis of Presentation and Significant Accounting Policies [Text Block] us-gaap_EffectiveIncomeTaxRateContinuingOperations Effective Income Tax Rate Reconciliation, Percent Accrued payroll and related costs us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities Income Tax Jurisdiction [Domain] Restricted stock units outstanding (in shares) us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable Income taxes payable Leasehold Improvements [Member] us-gaap_SharesOutstanding Balance (in shares) Balance (in shares) rcmt_AssetsNoncurrentExcludingPropertyPlantAndEquipment Total other assets Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Excludes property, plant and equipment. Segment Reporting [Text Block] us-gaap_IncreaseDecreaseInOtherReceivables Net of transit accounts receivable and payable Customer 1 [Member] Related to customer 1. Customer 2 [Member] Related to customer 2. Award Type [Axis] Segment Reporting [Table Text Block] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Preferred stock, $1.00 par value; 5,000,000 shares authorized; no shares issued or outstanding Plan Name [Axis] us-gaap_Liabilities Total liabilities Plan Name [Domain] us-gaap_AllocatedShareBasedCompensationExpense Share-Based Payment Arrangement, Expense us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and stockholders’ equity us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities Total adjustments and changes in operating assets and liabilities us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets Prepaid expenses and other current assets Selling, general and administrative Selling, general, and administrative Equity compensation expense from awards issued us-gaap_ShareBasedCompensation us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) Share-Based Payment Arrangement [Text Block] Changes in operating assets and liabilities: Preferred stock, issued (in shares) Europe [Member] Preferred stock, outstanding (in shares) Preferred stock, authorized (in shares) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate Preferred stock par value (in dollars per share) us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect (Decrease) increase in cash Effect of exchange rate changes on cash us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Cash at beginning of period Cash at end of period Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Table] Statement [Table] Credit Facility [Axis] Operating cash flows from operating leases Credit Facility [Domain] Canada Revenue Agency [Member] Revolving Credit Facility [Member] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Acquisition of right-of-use assets in exchange for lease obligations Financing cash flows from finance leases us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Lender [Domain] us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet Line of Credit Facility, Increase (Decrease), Net us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) Outstanding non-vested (in shares) Outstanding non-vested (in shares) Lender Name [Axis] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue Outstanding non-vested, weighted average grant date fair value (in dollars per share) Outstanding non-vested, weighted average grant date fair value (in dollars per share) us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity Line of Credit Facility, Remaining Borrowing Capacity srt_StockRepurchaseProgramAuthorizedAmount1 Share Repurchase Program, Authorized, Amount Granted (in shares) Granted, weighted average grant date fair value (in dollars per share) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod Forfeited or expired (in shares) us-gaap_LitigationReserve Estimated Litigation Liability Product and Service [Domain] Product and Service [Axis] us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization Accumulated depreciation Borrowings under revolving credit facility Long-Term Line of Credit, Noncurrent Property and equipment - (right-of-use assets) Vested, weighted average grant date fair value (in dollars per share) us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Line of Credit Facility [Table] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod Vested (in shares) us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue Total lease payments, operating leases us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent Finance leases us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent Operating leases Asset Class [Axis] 2027, operating leases us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 2026 (After April 4, 2026), operating leases us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) Assets [Abstract] 2029, operating leases Commitments and Contingencies Disclosure [Text Block] 2028, operating leases Statement [Line Items] 2030, operating leases Common stock, issue (in shares) Common stock, outstanding (in shares) Award Type [Domain] Common stock, authorized (in shares) us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 Share Repurchase Program, Remaining Authorized, Amount Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] us-gaap_DividendsPayableCurrentAndNoncurrent Dividends Payable Common stock, $0.05 par value; 40,000,000 shares authorized; 18,025,584 shares issued and 7,024,377 shares outstanding at April 4, 2026 and 18,004,241 shares issued and 7,351,400 shares outstanding at January 3, 2026 Schedule of Weighted Average Number of Shares [Table Text Block] Amortization of right-of-use assets us-gaap_SalesAndExciseTaxPayableCurrentAndNoncurrent Sales and Excise Tax Payable us-gaap_AccountsPayableCurrent Accounts Payable, Current Total, finance leases Total finance lease liabilities us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent Accounts payable and accrued expenses us-gaap_PolicyTextBlockAbstract Accounting Policies us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements us-gaap_TableTextBlock Notes Tables us-gaap_ComprehensiveIncomeNetOfTax Comprehensive income Finance lease payable, net of current position us-gaap_FinanceLeaseLiabilityNoncurrent Finance lease liability - non-current Contingencies Disclosure [Text Block] us-gaap_FinanceLeaseLiabilityPaymentsDue Total lease payments, finance leases Finance lease payable us-gaap_FinanceLeaseLiabilityCurrent Finance lease liability - current us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount Less: imputed interest, finance leases 2029, finance leases 2028, finance leases Property and equipment acquired us-gaap_SegmentExpenditureAdditionToLongLivedAssets 2030, finance leases Concentration Risk Type [Axis] Lease, Cash Flow Information [Table Text Block] Tabular disclosure of lessee's cash flow information for leases. 2027, finance leases rcmt_FinanceLeaseCost Total finance lease cost Amount of finance lease cost recognized by lessee for lease contract. Changes in finance lease obligations The amount of increase (decrease) in finance lease liability. Lease, Liability, Maturity [Table Text Block] Tabular disclosure of undiscounted cash flows of operating and finance lease liabilities. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance lease liability recognized in statement of financial position. Finance lease cost, Interest on lease liabilities Operating cash flows from finance leases Lease, Balance Sheet Information [Table Text Block] Tabular disclosure of lessee's balance sheet information for leases. Accrued payroll and related costs 2026 (After April 4, 2026), finance leases us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount Less: imputed interest, operating leases Net borrowings (repayments) under revolving credit facility Operating lease liabilities, net of current position Operating lease liabilities - non-current Thereafter, finance leases Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after listed fiscal years. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Total, operating leases Total operating lease liabilities Operating lease liabilities Operating lease liabilities - current Thereafter, operating leases Amount of lessee's undiscounted obligation for lease payment for operating lease due after listed fiscal years. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Laboratory Equipment [Member] Relating to laboratory equipment. Income taxes payable Concentration Risk Type [Domain] Goodwill [Text Block] CANADA Income Tax Jurisdiction, Domestic Federal [Member] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Statement of Stockholders' Equity [Abstract] Statement of Comprehensive Income [Abstract] Statement of Cash Flows [Abstract] Foreign currency translation adjustment Other comprehensive (loss) income Stockholders’ equity: Equity Components [Axis] Equity Component [Domain] AOCI Attributable to Parent [Member] The 2025 Plan [Member] The 2025 Plan Additional Paid-in Capital [Member] Retained Earnings [Member] Income Tax Jurisdiction, Foreign [Member] Cost of services Cost of services Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Property and equipment, net Property and equipment Transit accounts payable Represents the amount of transit accounts payable as of the balance sheet date. Deferred income taxes Equity compensation expense from awards issued us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] us-gaap_DeferredIncomeTaxLiabilitiesNet Deferred income taxes, net Current liabilities: us-gaap_LiabilitiesCurrent Total current liabilities us-gaap_LettersOfCreditOutstandingAmount Letters of Credit Outstanding, Amount Treasury Stock [Text Block] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block] Customer Concentration Risk [Member] PHILIPPINES Income taxes Lease, Cost [Table Text Block] PUERTO RICO Revenue Benchmark [Member] Other Commitments [Table] Less: accumulated depreciation and amortization Accumulated other comprehensive loss Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset [Table Text Block] us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Income before income taxes Additional paid-in capital Debt Disclosure [Text Block] Prepaid expenses and other current assets us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) Issuance of stock under employee stock purchase plan us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Property and equipment acquired UNITED STATES us-gaap_StockRepurchasedAndRetiredDuringPeriodValue Retirement of common shares Current assets: us-gaap_AssetsCurrent Total current assets rcmt_NumberOfMajorCustomers Number of Major Customers The number of customers who individually represent more than 10% of a concentration risk benchmark. Issuance of stock under employee stock purchase plan (in shares) us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares) Gross profit us-gaap_GrossProfit Gross profit Goodwill [Table] Accounts receivable us-gaap_AccountsReceivableGrossCurrent Accounts Receivable, before Allowance for Credit Loss, Current us-gaap_DebtInstrumentInterestRateEffectivePercentage Debt Instrument, Interest Rate, Effective Percentage Issuance of stock upon vesting of restricted share awards (in shares) Issuance of stock upon vesting of restricted share awards (in shares) us-gaap_StockRepurchasedAndRetiredDuringPeriodShares Retirement of common shares (in shares) Purchase of treasury stock (in shares) Treasury Stock, Shares, Acquired (in shares) rcmt_PaymentsForRetirementOfCommonStock Retirement of common shares The cash outflow for the retirement of common stock. Cash flows from operating activities: Cash flows from investing activities: us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash provided by operating activities Cash flows from financing activities: us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities us-gaap_TreasuryStockAcquiredAverageCostPerShare Shares Acquired, Average Cost Per Share (in dollars per share) us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash used in financing activities Loans, Notes, Trade and Other Receivables Disclosure [Text Block] us-gaap_GoodwillImpairmentLoss Goodwill, Impairment Loss Deposits us-gaap_IncreaseDecreaseInDeposits Accounting Policies [Abstract] Segments [Domain] Time-based Restricted Stock Units [Member] Represents time-based restricted stock units. Performance-based Restricted Stock Units [Member] Represents information pertaining to performance-based restricted stock units. Accounting Standards Update and Change in Accounting Principle [Text Block] Segments [Axis] Internal Revenue Service (IRS) [Member] Corporate Segment [Member] Unbilled Revenues [Member] Income Statement [Abstract] us-gaap_NumberOfOperatingSegments Number of Operating Segments us-gaap_NumberOfReportableSegments Number of Reportable Segments us-gaap_TreasuryStockCommonValue Treasury stock at cost, 11,001,207 shares at April 4, 2026, and 10,652,841 shares at January 3, 2026 Treasury stock, shares (in shares) (in shares) Balance (in shares) Balance (in shares) Treasury Stock, Common [Member] Net income Net income Net income Accounts receivable and contract assets, net Accounts receivable and contract assets, net of provision for credit losses of $1,229 at April 4, 2026 and $1,229 at January 3, 2026 Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business and contract with customer assets, classified as current. us-gaap_InterestIncomeExpenseNet Interest expense and other, net Provision for credit losses Provision for credit losses Amount of expense related to estimated loss from accounts receivable and contract assets. rcmt_IncreaseDecreaseInAccountsReceivableAndContractAssets Accounts receivable The increase (decrease) during the reporting period in the amount of accounts receivable and contract assets. Income Tax Disclosure [Text Block] Issuance of stock for employee stock purchase plan Accounting Standards Update and Change in Accounting Principle [Table] Unusual Risk or Uncertainty [Table] rcmt_ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance Contract With Customer, Liability, Revenue Recognized, Including Opening Balance Amount of revenue recognized including amount that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. us-gaap_TreasuryStockValueAcquiredCostMethod Purchase of treasury stock Transit accounts receivable us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee (in shares) Life Sciences, Data & Solutions [Member] Represents Life Sciences, Data & Solutions. rcmt_IncreaseDecreaseInRightOfUseLiabilities Operating lease liabilities The increase (decrease) during the reporting period in the aggregate amount of right-of-use liabilities. us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date Other expense (income) Statement of Financial Position [Abstract] us-gaap_NonoperatingIncomeExpense Other expense (income), net Class of Treasury Stock [Table] Other assets: Supplemental cash flow information: us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1 Finance leases (Year) rcmt_WriteOffOfFullyDepreciatedPropertyAndEquipment Write Off of Fully Depreciated Property and Equipment Write off of fully depreciated property and equipmen Equipment and Furniture [Member] Equipment and furniture [member Depreciation and amortization of property and equipment Depreciation and amortization of property and equipment Depreciation, Nonproduction Computers and Systems [Member] Computers and systems [member Engineering [Member] Engineering [member us-gaap_PaymentsForRepurchaseOfCommonStock Purchase of treasury stock Specialty Health Care [Member] Specialty health care [member us-gaap_IncreaseDecreaseInDeferredIncomeTaxes Deferred income tax expense Document Type Operating costs and expenses Document Information [Line Items] Document Quarterly Report us-gaap_ConcentrationRiskPercentage1 Concentration Risk, Percentage us-gaap_GoodwillPeriodIncreaseDecrease Goodwill, Period Increase (Decrease) us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1 Operating leases (Year) Document Information [Table] us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) Entity Interactive Data Current us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) Document Transition Report us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding Diluted weighted average shares outstanding (in shares) us-gaap_OperatingExpenses Operating costs and expenses Issuance of stock upon vesting of restricted share awards Issuance of stock upon vesting of restricted share awards Represents shares issued for vested shares. Unissued Shares of Common Stock [Table Text Block] Unissued shares of common stock [table text block Future grants of options or shares (in shares) Future grants of options or share Dilutive effect of outstanding restricted share awards (in shares) Basic weighted average shares outstanding (in shares) Basic net earnings per share (in dollars per share) Bureau of Internal Revenue of Philippines [Member] Represents Bureau of Internal Revenue of Philippines. Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Effective Income Tax Rate Reconciliation [Table] Deposits Income Tax Jurisdiction [Axis] Document Fiscal Period Focus Customer [Domain] Document Fiscal Year Focus Amendment Flag Common Stock [Member] Goodwill us-gaap_Goodwill Document Period End Date Property, Plant, and Equipment [Text Block] us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Long-Lived Asset, Class [Domain] Legal Entity [Axis] Operating lease cost Permanent Placement Services [Member] Contract with customer in which the Company earns fees based on a percentage of the compensation paid to the person placed with the client. Entity File Number Engineering Services [Member] Services relating to engineering, to include consulting and project solution. Entity Tax Identification Number Non-cash operating activities: Time-and-Materials Contract [Member] Disaggregation of Revenue [Table Text Block] Disaggregation of Revenue [Table] Entity [Domain] Entity Central Index Key us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested Entity Registrant Name Change in operating right-of-use assets Amount of amortization expense for right-of-use asset from operating lease and finance lease. Business Combination [Table] Entity Current Reporting Status Entity Incorporation, State or Country Code Current Fiscal Year End Date Entity Filer Category Employee Stock Purchase Plan [Member] Represents information regarding the Employee Stock Purchase Plan. Contract with Customer, Basis of Pricing [Domain] Entity Shell Company Entity Emerging Growth Company Fixed-Price Contract [Member] Entity Small Business Contract with Customer, Basis of Pricing [Axis] Operating income us-gaap_OperatingIncomeLoss Operating income Citizens Bank of Pennsylvania [Member] The entity Citizens Bank of Pennsylvania. Entity Address, State or Province Entity Address, City or Town Retained earnings Entity Address, Address Line One Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Contract assets us-gaap_ContractWithCustomerAssetNetCurrent City Area Code Local Phone Number Entity Address, Postal Zip Code Revenue from Contract with Customer [Text Block] Title of 12(b) Security Security Exchange Name Trading Symbol Class of Stock [Axis] rcmt_AccountsPayableNet Accounts Payable, Net Represents the amount of accounts payable as of the specified date, net of accounts receivable. Transit Accounts Receivable [Member] Transit accounts receivable used to pay transit accounts payable. Entity Common Stock, Shares Outstanding Earnings Per Share [Text Block] The 2014 Plan [Member] Represents the 2014 Plan. rcmt_AdditionalSharesOfCommonStockReservedForFutureIssuance Additional Shares of Common Stock Reserved for Future Issuance (in shares) Number of additional common shares reserved for future issuance. Property, Plant, and Equipment [Table] Common stock, par value (in dollars per share) Long-Lived Asset, Class [Axis] Total assets us-gaap_Assets Total assets Cash Geographical [Domain] Geographical [Axis] Total (in shares) Common Stock, Capital Shares Reserved for Future Issuance (in shares) Diluted net earnings per share (in dollars per share) us-gaap_ContractWithCustomerLiability Contract with Customer, Liability Customer [Axis] Deferred revenue Depreciation and amortization us-gaap_DepreciationDepletionAndAmortization Asset Class [Domain] Accounts and Financing Receivables [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Receivables Billing Status [Domain] Billed Revenues [Member] Billing Status, Type [Axis] Interest Shares reserved for employee stock purchase plan (in shares) Business Combination [Text Block] Technology Service [Member] Deferred revenue us-gaap_IncreaseDecreaseInContractWithCustomerLiability us-gaap_StockholdersEquity Total stockholders’ equity Balance Balance Forfeited or expired, weighted average grant date fair value (in dollars per share) Goodwill [Table Text Block] Health Care [Member] Concentration Risk Benchmark [Axis] Nature of Operation, Product Information, Concentration of Risk [Table] Concentration Risk Benchmark [Domain] us-gaap_FinanceLeaseRightOfUseAsset Property and equipment, net Operating right-of-use asset Operating lease right-of-use assets ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] Property, Plant, and Equipment [Table Text Block] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Revenues Revenue Contingencies (note 15)