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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Cash flows from operating activities:    
Net income (loss) $ (4,594) $ (5,356)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Deferred income tax provision (benefit) (162) (97)
Equity income (loss) from foreign joint ventures’ operations (284) (367)
Depreciation and amortization 640 660
Stock based compensation 280 366
Gain on fixed asset disposal   (75)
Bad debt expense 45 100
Obsolete inventory expense 66 35
Deferred compensation costs (36) (33)
Amortization of debt issuance costs 59  
Change in operating assets and liabilities:    
Accounts receivable (1,496) (360)
Inventories (54) (180)
Costs and estimated earnings in excess of billings on uncompleted contracts (1,389) (3,049)
Prepaid expenses and other current assets 61 79
Accounts payable 2,116 3,817
Billings in excess of costs and estimated earnings on uncompleted contracts 2,795 (1,288)
Accrued liabilities and other current liabilities (127) 188
Net cash provided by (used in) operating activities (2,080) (5,560)
Cash flows from investing activities:    
Proceeds from sale of property and equipment and other assets   309
Purchases of property, plant and equipment and other assets (219) (572)
Proceeds from foreign joint ventures' operations dividends 781 589
Redemption (purchase) of certificates of deposit 457  
Net cash provided by (used in) from investing activities 1,019 326
Cash flows from financing activities:    
Proceeds from sale of common stock, preferred stock, and warrants 10 13
Treasury stocks purchase (53) (71)
Preferred stock cash dividend   (150)
Proceeds from long-term notes payable 7,000  
Proceeds from short-term notes payable 200  
Payments on revolving credit facility (1,500) 457
Payments on long-term notes payable (4,200) (150)
Payments on short-term notes payable (500)  
Payments of debt issuance costs (427)  
Net cash provided by (used in) financing activities 530 99
Effect of exchange rate on cash 11 49
Net increase (decrease) in cash and cash equivalents (520) (5,086)
Cash and cash equivalents, beginning of period 1,618 7,989
Cash and cash equivalents, end of period 1,098 2,903
Supplemental disclosures of cash flow information:    
Interest paid 611 $ 162
Non-cash investing and financing transactions:    
Issuance of shares of common stock on accrued preferred dividends payables $ 375