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Consolidated Statements of Cash Flows (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Operating Activities:    
Net loss including noncontrolling interest $ (1,138,000)us-gaap_ProfitLoss $ (965,000)us-gaap_ProfitLoss
Adjustments to reconcile net loss including noncontrolling interest to net cash provided by operating activities:    
Depreciation and amortization 155,000us-gaap_DepreciationDepletionAndAmortization 188,000us-gaap_DepreciationDepletionAndAmortization
Provision for inventory reserves 900,000us-gaap_ProvisionForOtherLosses 900,000us-gaap_ProvisionForOtherLosses
Provision for sales returns and doubtful accounts 3,000us-gaap_ProvisionForDoubtfulAccounts 11,000us-gaap_ProvisionForDoubtfulAccounts
Stock based compensation 23,000us-gaap_ShareBasedCompensation 26,000us-gaap_ShareBasedCompensation
Loss on investments 226,000us-gaap_GainLossOnInvestments 148,000us-gaap_GainLossOnInvestments
Impairment of investment in securities 305,000us-gaap_ImpairmentOfInvestments 0us-gaap_ImpairmentOfInvestments
Changes in assets and liabilities:    
Restricted cash 0us-gaap_IncreaseDecreaseInRestrictedCash 100,000us-gaap_IncreaseDecreaseInRestrictedCash
Trade accounts receivable (26,000)us-gaap_IncreaseDecreaseInAccountsReceivable 331,000us-gaap_IncreaseDecreaseInAccountsReceivable
Inventory 765,000us-gaap_IncreaseDecreaseInInventories (65,000)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets (18,000)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets (43,000)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Trade accounts payable (174,000)us-gaap_IncreaseDecreaseInAccountsPayable (100,000)us-gaap_IncreaseDecreaseInAccountsPayable
Accrued liabilities (46,000)us-gaap_IncreaseDecreaseInAccruedLiabilities (140,000)us-gaap_IncreaseDecreaseInAccruedLiabilities
Other assets and liabilities 4,000us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet 21,000us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet
Total adjustments 2,117,000us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities 1,377,000us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities 979,000us-gaap_NetCashProvidedByUsedInOperatingActivities 412,000us-gaap_NetCashProvidedByUsedInOperatingActivities
Investing Activities:    
Acquisition of property & equipment (14,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (20,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Payments for investments in joint ventures (245,000)us-gaap_PaymentsToAcquireInterestInJointVenture (294,000)us-gaap_PaymentsToAcquireInterestInJointVenture
Proceeds from return of investments 0us-gaap_ProceedsFromDivestitureOfInterestInJointVenture 147,000us-gaap_ProceedsFromDivestitureOfInterestInJointVenture
Net cash used for investing activities (259,000)us-gaap_NetCashProvidedByUsedInInvestingActivities (167,000)us-gaap_NetCashProvidedByUsedInInvestingActivities
Impact of exchange rates on cash 26,000us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents 4,000us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net increase in cash and cash equivalents 746,000us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 249,000us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents, beginning of period 2,724,000us-gaap_CashAndCashEquivalentsAtCarryingValue 2,475,000us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents, end of period 3,470,000us-gaap_CashAndCashEquivalentsAtCarryingValue 2,724,000us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental disclosures of cash flow information:    
Cash paid for interest 53,000us-gaap_InterestPaidNet 53,000us-gaap_InterestPaidNet
Cash paid for income taxes, net $ 2,000us-gaap_IncomeTaxesPaidNet $ 3,000us-gaap_IncomeTaxesPaidNet