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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Cash flows from operating activities:    
Net income (loss) $ (2,495) $ (2,883)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Deferred income tax provision (benefit) 18 (56)
Equity income (loss) from foreign joint ventures’ operations (52) 195
Depreciation and amortization 218 221
Stock based compensation 89 165
Bad debt expense 15 69
Obsolete inventory expense 66 18
Deferred compensation costs (12) (11)
Amortization of debt issuance costs 7  
Change in operating assets and liabilities:    
Accounts receivable 1,923 2,339
Inventories 157 343
Costs and estimated earnings in excess of billings on uncompleted contracts (669) (1,704)
Prepaid expenses and other current assets (46) (99)
Accounts payable (61) (485)
Billings in excess of costs and estimated earnings on uncompleted contracts 508 660
Accrued liabilities and other current liabilities (624) (408)
Net cash provided by (used in) operating activities (958) (1,636)
Cash flows from investing activities:    
Purchases of property, plant and equipment and other Assets (71) (113)
Net cash provided by (used in) from investing activities (71) (113)
Cash flows from financing activities:    
Proceeds from sale of common stock, preferred stock, and Warrants 4 4
Treasury stocks purchase   (36)
Preferred stock cash dividend   (75)
Proceeds from long-term notes payable 7,000  
Advances from revolving credit facility (repayments) (1,500) 957
Payments on long-term notes payable (4,200)  
Payments of debt issuance costs (342)  
Net cash provided by (used in) financing activities 962 850
Effect of exchange rate on cash 8 19
Net increase (decrease) in cash and cash equivalents (59) (880)
Cash and cash equivalents, beginning of period 1,618 7,989
Cash and cash equivalents, end of period 1,559 7,109
Supplemental disclosures of cash flow information:    
Interest paid 89 $ 41
Non-cash investing and financing transactions:    
Issuance of shares of common stock on accrued preferred dividends payables $ 300