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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Cash flows from operating activities:    
Net loss $ (511) $ (4,903)
Adjustments to reconcile net loss to net cash used in operating activities:    
Distributions in excess of equity income from foreign joint venture operations 96 672
Depreciation and amortization 50 377
Stock-based compensation   284
Bad debt expense   30
Deferred compensation costs (25) (25)
Amortization of debt issuance costs   55
Change in operating assets and liabilities:    
Accounts receivable (201) 268
Inventories 7 (107)
Contract assets (817) 3,247
Prepaid expenses and other current assets 13 48
Accounts payable and accrued liabilities 340 (478)
Contract liabilities   2,009
Net cash used in (provided by) operating activities (1,048) 1,477
Cash flows from investing activities:    
Purchases of property, plant and equipment and other assets (117) (165)
Net cash provided by investing activities (117) (165)
Cash flows from financing activities:    
Proceeds from sale of common stock, preferred stock and warrants   8
Treasury stocks purchase   (18)
Proceeds from short-term notes payable 175  
Payments on short-term notes payable (48) (60)
Other financing activities, net   (146)
Net cash provided by (used in) financing activities 127 (216)
Effect of exchange rate changes on cash (6) (50)
Net decrease in cash and cash equivalents (1,044) 1,046
Cash and cash equivalents, beginning of period 2,124 2,289
Cash and cash equivalents, end of period $ 1,080 $ 3,335