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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Cash flows from operating activities:    
Net income (loss) $ (2,732) $ 821
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Deferred income tax provision (benefit) (129) (78)
Equity income (loss) from foreign joint ventures’ operations (152) (400)
Depreciation and amortization 444 459
Stock based compensation 267 256
Gain on fixed asset disposal (75)  
Bad debt expense 84 25
Obsolete inventory expense 35 35
Deferred compensation costs (22) 8
Change in operating assets and liabilities:    
Accounts receivable (811) 4,310
Inventories 198 624
Costs and estimated earnings in excess of billings on uncompleted contracts (2,784) (801)
Prepaid expenses and other current assets (55) (184)
Accounts payable 2,793 (2,793)
Billings in excess of costs and estimated earnings on uncompleted contracts (723) 732
Accrued liabilities and other current liabilities (559) (304)
Net cash provided by (used in) operating activities (4,221) 2,710
Cash flows from investing activities:    
Proceeds from sale of property and equipment 309  
Purchases of property, plant and equipment and other assets (372) (449)
Proceeds from foreign joint ventures' operations dividends 589 1,170
Net cash provided by (used in) from investing activities 526 721
Cash flows from financing activities:    
Proceeds from sale of common stock, preferred stock, and warrants 10 (1)
Treasury stocks purchase (36) (70)
Preferred stock cash dividend (75) (75)
Proceeds from long-term notes payable   4,000
Advances from revolving credit facility (repayments) (143) (2,500)
Payments on long-term notes payable (150) (89)
Net cash provided by (used in) financing activities (394) 1,265
Effect of exchange rate on cash 61  
Net increase (decrease) in cash and cash equivalents (4,028) 4,696
Cash and cash equivalents, beginning of period 7,989 3,550
Cash and cash equivalents, end of period 3,961 8,246
Supplemental disclosures of cash flow information:    
Interest paid $ 95 $ 75