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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 3,550us-gaap_CashAndCashEquivalentsAtCarryingValue $ 4,148us-gaap_CashAndCashEquivalentsAtCarryingValue
Accounts receivable-trade, net of allowance of $315 and $327 at December 31, 2014 and December 31, 2013 11,877us-gaap_AccountsReceivableNetCurrent 10,462us-gaap_AccountsReceivableNetCurrent
Inventories, net of allowance of $73 and $40 at December 31, 2014 and December 31, 2013 2,769us-gaap_InventoryNet 3,184us-gaap_InventoryNet
Cost and estimated earnings in excess of billings on uncompleted contracts 2,989us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear 5,312us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear
Prepaid expenses and other current assets 750us-gaap_PrepaidExpenseAndOtherAssetsCurrent 376us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Current assets held for sale   3,113us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
Total current assets 21,935us-gaap_AssetsCurrent 26,595us-gaap_AssetsCurrent
Property, plant and equipment, net 8,373us-gaap_PropertyPlantAndEquipmentNet 4,077us-gaap_PropertyPlantAndEquipmentNet
Advances to and investments in foreign joint ventures 12,054us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures 13,033us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Other assets 242us-gaap_OtherAssetsNoncurrent 126us-gaap_OtherAssetsNoncurrent
Long-term assets held for sale 650us-gaap_DisposalGroupIncludingDiscontinuedOperationLongLivedAssetsNoncurrent 2,005us-gaap_DisposalGroupIncludingDiscontinuedOperationLongLivedAssetsNoncurrent
Total assets 43,254us-gaap_Assets 45,836us-gaap_Assets
Current liabilities:    
Accounts payable 6,447us-gaap_AccountsPayableCurrent 5,327us-gaap_AccountsPayableCurrent
Accrued payroll and benefits 1,145us-gaap_EmployeeRelatedLiabilitiesCurrent 1,911us-gaap_EmployeeRelatedLiabilitiesCurrent
Other accrued expenses 640us-gaap_OtherAccruedLiabilitiesCurrent 397us-gaap_OtherAccruedLiabilitiesCurrent
Billings in excess of costs and estimated earnings on uncompleted contracts 1,983us-gaap_BillingsInExcessOfCostCurrent 3,021us-gaap_BillingsInExcessOfCostCurrent
Short-term notes payable 222us-gaap_NotesPayableCurrent  
Other current liabilities 150us-gaap_OtherLiabilitiesCurrent 121us-gaap_OtherLiabilitiesCurrent
Current liabilities held for sale   536us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
Total current liabilities 10,587us-gaap_LiabilitiesCurrent 11,313us-gaap_LiabilitiesCurrent
Notes payable 3,778us-gaap_LongTermNotesPayable 500us-gaap_LongTermNotesPayable
Deferred income taxes 3,046us-gaap_DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent 3,541us-gaap_DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent
Deferred compensation 290us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent 211us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
Total liabilities 17,701us-gaap_Liabilities 15,565us-gaap_Liabilities
Convertible preferred stock:    
Redeemable convertible preferred stock, Series A, net of discount of $729 at December 31, 2014 and $764 at December 31, 2013; $0.001 par value, 1,000,000 shares authorized, issued and outstanding at December 31, 2014 and December 31, 2013 4,281us-gaap_TemporaryEquityCarryingAmountAttributableToParent 4,236us-gaap_TemporaryEquityCarryingAmountAttributableToParent
Stockholders’ equity:    
Common stock; $0.001 par value, 50,000,000 shares authorized, 8,185,323 and 8,008,759 shares issued and outstanding at December 31, 2014 and December 31, 2013 8us-gaap_CommonStockValue 8us-gaap_CommonStockValue
Treasury stock, at cost 111,640 shares at December 31, 2014 and 49,863 shares at December 31, 2013) (722)us-gaap_TreasuryStockValue (238)us-gaap_TreasuryStockValue
Additional paid-in capital 11,418us-gaap_AdditionalPaidInCapitalCommonStock 10,494us-gaap_AdditionalPaidInCapitalCommonStock
Accumulated other comprehensive income 851us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax 983us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Retained earnings; including accumulated statutory reserves in equity method investments of $2,100 and $1,857 at December 31, 2014 and December 31, 2013 9,717us-gaap_RetainedEarningsAccumulatedDeficit 14,788us-gaap_RetainedEarningsAccumulatedDeficit
Total stockholders’ equity 21,272us-gaap_StockholdersEquity 26,035us-gaap_StockholdersEquity
Total liabilities and stockholders’ equity $ 43,254us-gaap_LiabilitiesAndStockholdersEquity $ 45,836us-gaap_LiabilitiesAndStockholdersEquity