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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Operating Activities:    
Net income (loss) $ (274)us-gaap_NetIncomeLoss $ 623us-gaap_NetIncomeLoss
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Depreciation and amortization 236us-gaap_DepreciationDepletionAndAmortization 147us-gaap_DepreciationDepletionAndAmortization
Stock-based compensation 375us-gaap_ShareBasedCompensation 189us-gaap_ShareBasedCompensation
Penalties and waived penalties on dividends 6us-gaap_ProceedsFromPaymentsForOtherFinancingActivities 30us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Changes in operating assets and liabilities:    
Accounts receivable 79us-gaap_IncreaseDecreaseInAccountsReceivable 130us-gaap_IncreaseDecreaseInAccountsReceivable
Inventories 7us-gaap_IncreaseDecreaseInInventories (14)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other assets (25)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets (50)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Accounts payable, accrued expenses and other current liabilities (136)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities 298us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Deferred revenue 303us-gaap_IncreaseDecreaseInDeferredRevenue 87us-gaap_IncreaseDecreaseInDeferredRevenue
Net cash provided by operating activities 571us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations 1,440us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Investing Activities:    
Purchases of property and equipment (55)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (116)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Financing Activities:    
Proceeds from line of credit 453us-gaap_ProceedsFromLinesOfCredit 508us-gaap_ProceedsFromLinesOfCredit
Payments on line of credit (453)us-gaap_RepaymentsOfLinesOfCredit (638)us-gaap_RepaymentsOfLinesOfCredit
Payments of Dividends (558)us-gaap_PaymentsOfDividends  
Principal payments on capital lease equipment (168)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations (107)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations
Proceeds from stock options exercised 77us-gaap_ProceedsFromStockOptionsExercised  
Net cash used in financing activities (649)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations (237)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net increase (decrease) in cash and cash equivalents (133)us-gaap_NetCashProvidedByUsedInContinuingOperations 1,087us-gaap_NetCashProvidedByUsedInContinuingOperations
Cash and cash equivalents at beginning of year 1,139us-gaap_CashAndCashEquivalentsAtCarryingValue 52us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of year 1,006us-gaap_CashAndCashEquivalentsAtCarryingValue 1,139us-gaap_CashAndCashEquivalentsAtCarryingValue
SUPPLEMENTAL CASH FLOW INFORMATION:    
Interest paid on leased assets 23us-gaap_InterestPaid 17us-gaap_InterestPaid
SUPPLEMENTAL DISCLOSURE OF NON CASH FINANCING ACTIVITIES:    
Preferred stock dividends accrued 141us-gaap_DividendsPreferredStock 151us-gaap_DividendsPreferredStock
Purchase of equipment through capital lease 270us-gaap_CapitalExpendituresIncurredButNotYetPaid 68us-gaap_CapitalExpendituresIncurredButNotYetPaid
Conversion of preferred shares to common stock $ 163intz_ConversionOfPreferredSharesToCommonStock