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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Cash flows from operating activities:    
Net income (loss) $ (5,356) $ 1,025
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Deferred income tax provision (benefit) (97) (171)
Equity income (loss) from foreign joint ventures’ operations (367) (625)
Depreciation and amortization 660 673
Stock based compensation 366 302
Gain on fixed asset disposal (75) 84
Bad debt expense 100 (55)
Obsolete inventory expense 35 47
Deferred compensation costs (33) 12
Change in operating assets and liabilities:    
Accounts receivable (360) 3,915
Inventories (180) 1,252
Costs and estimated earnings in excess of billings on uncompleted contracts (3,049) 142
Prepaid expenses and other current assets 79 707
Accounts payable 3,817 (1,752)
Billings in excess of costs and estimated earnings on uncompleted contracts (1,288) (969)
Accrued liabilities and other current liabilities 188 (393)
Foreign currency translation adjustment   (410)
Net cash provided by (used in) operating activities (5,560) 3,784
Cash flows from investing activities:    
Proceeds from sale of property and equipment 309  
Purchases of property, plant and equipment and other assets (572) (559)
Proceeds from foreign joint ventures' operations dividends 589 1,170
Net cash provided by (used in) from investing activities 326 611
Cash flows from financing activities:    
Proceeds from sale of common stock, preferred stock, and warrants 13 22
Treasury stocks purchase (71) (70)
Preferred stock cash dividend (150) (75)
Proceeds from long-term notes payable   4,000
Advances from revolving credit facility (repayments) 457 (2,500)
Payments on long-term notes payable (150) (154)
Net cash provided by (used in) financing activities 99 1,223
Effect of exchange rate on cash 49  
Net increase (decrease) in cash and cash equivalents (5,086) 5,618
Cash and cash equivalents, beginning of period 7,989 3,550
Cash and cash equivalents, end of period 2,903 9,168
Supplemental disclosures of cash flow information:    
Interest paid $ 162 $ 137