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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Cash flows from operating activities:    
Net income (loss) $ 4,551 $ 2,309
Adjustments to reconcile net income to net cash provided by operating activities:    
Deferred income tax provision (benefit) 593 659
Equity income from foreign joint ventures' operations (3,024) (3,088)
Depreciation and amortization 871 877
Stock based compensation 850 326
Provision for bad debt 65 90
Allowance for obsolete inventory 32 110
Gain on sale of property and equipment (143) (24)
Deferred compensation costs 89 6
Change in operating assets and liabilities:    
Accounts receivable (1,713) 1,479
Income taxes payable 111 (11)
Inventories 368 (781)
Costs and estimated earnings in excess of billings on uncompleted contracts (3,107) (179)
Prepaid expenses and other current assets (373) (43)
Accounts payable and accrued liabilities 1,702 (1,553)
Billings in excess of costs and estimated earnings on uncompleted contracts (555) 668
Net cash provided by (used in) operating activities 317 845
Cash flows from investing activities:    
Purchases of property, plant and equipment and other assets (2,292) (1,455)
Proceeds from disposal of property, plant and equipment 575 177
Repayments of amounts advanced to foreign joint ventures' operations 180 50
Proceeds from foreign joint ventures' operations dividends 1,344 1,008
Net cash provided by (used in) from investing activities (193) (220)
Cash flows from financing activities:    
Proceeds from sale of common stock, preferred stock, and warrants 47 5,042
Treasury stocks purchase (146) (92)
Preferred stock cash dividend (300) (191)
Advances from (repayment of) credit facility   (4,500)
Capital lease obligation payment (54) (156)
Net cash provided by (used in) financing activities (453) 103
Net increase (decrease) in cash and cash equivalents (329) 728
Cash and cash equivalents, beginning of year 4,477 3,749
Cash and cash equivalents, end of year 4,148 4,477
Supplemental disclosures of cash flow information:    
Interest paid 27 111
Income taxes paid $ 179 $ 132