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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Operating activities:    
Net income (loss) $ 332,000us-gaap_ProfitLoss $ (49,000)us-gaap_ProfitLoss
Adjustments to reconcile net income (loss) to net cash from operating activities:    
Depreciation and amortization 1,517,000us-gaap_DepreciationDepletionAndAmortization 1,679,000us-gaap_DepreciationDepletionAndAmortization
Deferred income tax 0us-gaap_DeferredIncomeTaxExpenseBenefit (52,000)us-gaap_DeferredIncomeTaxExpenseBenefit
(Gain) on foreign currency transactions 0us-gaap_ForeignCurrencyTransactionGainLossUnrealized (15,000)us-gaap_ForeignCurrencyTransactionGainLossUnrealized
Stock-based compensation expense 36,000us-gaap_ShareBasedCompensation 26,000us-gaap_ShareBasedCompensation
Other non-cash items 12,000us-gaap_OtherNoncashIncomeExpense 0us-gaap_OtherNoncashIncomeExpense
Changes in operating assets and liabilities:    
Receivables (735,000)us-gaap_IncreaseDecreaseInAccountsReceivable (456,000)us-gaap_IncreaseDecreaseInAccountsReceivable
Prepaid expenses and other assets 9,000us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets 0us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Customer deposits/deferred revenue 17,000us-gaap_IncreaseDecreaseInDeferredRevenueAndCustomerAdvancesAndDeposits (12,000)us-gaap_IncreaseDecreaseInDeferredRevenueAndCustomerAdvancesAndDeposits
Accounts payable and accrued liabilities 141,000us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities 283,000us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Net cash from operating activities 1,329,000us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations 1,404,000us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Investing activities:    
Payment for purchase of property and equipment (188,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (147,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Net cash used in investing activities (188,000)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations (147,000)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Financing activities:    
Principal payments on long-term debt (401,000)us-gaap_RepaymentsOfLongTermDebt (956,000)us-gaap_RepaymentsOfLongTermDebt
Principal payments on capital leases (1,004,000)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations (1,079,000)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations
Proceeds from certificate of deposit 9,000,000us-gaap_PaymentsForProceedsFromDepositOnLoan 0us-gaap_PaymentsForProceedsFromDepositOnLoan
Advances on line of credit 0us-gaap_ProceedsFromLongTermLinesOfCredit 60,000us-gaap_ProceedsFromLongTermLinesOfCredit
Payments on line of credit (8,780,000)us-gaap_RepaymentsOfLongTermLinesOfCredit 0us-gaap_RepaymentsOfLongTermLinesOfCredit
Capital contributions from non-controlling interests 0us-gaap_ProceedsFromMinorityShareholders 59,000us-gaap_ProceedsFromMinorityShareholders
Distributions to non-controlling interests (88,000)us-gaap_PaymentsToMinorityShareholders (274,000)us-gaap_PaymentsToMinorityShareholders
Common stock repurchased 0us-gaap_PaymentsForRepurchaseOfCommonStock (2,000)us-gaap_PaymentsForRepurchaseOfCommonStock
Net cash used in financing activities (1,273,000)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations (2,192,000)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Effect of changes in foreign exchange rates on cash 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents (17,000)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net change in cash and cash equivalents (132,000)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (952,000)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of period 1,059,000us-gaap_CashAndCashEquivalentsAtCarryingValue 1,909,000us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of period 927,000us-gaap_CashAndCashEquivalentsAtCarryingValue 957,000us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental cash flow disclosure:    
Cash paid for interest 438,000us-gaap_InterestPaid 541,000us-gaap_InterestPaid
Cash paid for income taxes (5,000)us-gaap_IncomeTaxesPaid 21,000us-gaap_IncomeTaxesPaid
Schedule of non-cash investing and financing activities    
Acquisition of equipment with capital lease financing $ 1,160,000us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 $ 0us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1