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Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Cash flows from operating activities:    
Net income $ 3,873 $ 1,735
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Deferred income tax provision 745 566
Equity income from foreign joint ventures' operations (3,140) (2,571)
Depreciation and amortization 620 676
Stock based compensation 425 326
Provision for bad debt 66 90
Allowance for obsolete inventory 64 25
Loss (gain) on sale of property, plant and equipment 5 (17)
Deferred compensation costs 71 5
Change in operating assets and liabilities:    
Accounts receivable (913) 2,969
Income taxes payable 5   
Inventories (1,902) (657)
Costs and estimated earnings in excess of billings on uncompleted contracts (2,552) 540
Accounts payable and accrued liabilities 1,674 (2,088)
Billings in excess of costs and estimated earnings on uncompleted contracts 434 (774)
Prepaid expenses and other current assets 14 328
Net cash provided by (used in) operating activities (511) 1,153
Cash flows from investing activities:    
Purchases of property, plant and equipment and other assets (779) (813)
Proceeds from disposal of property, plant and equipment 1 17
Repayments of advances and dividends from foreign joint ventures' operations 1,391 907
Purchase of intangible assets    (104)
Net cash (used in) provided by investing activities 613 7
Cash flows from financing activities:    
Proceeds from issuance of common stock 22 39
Proceeds from sale of preferred stock and warrants    4,961
Treasury stock purchase, in accordance with the employee stock incentive plan (146) (92)
Preferred stock cash dividend (225) (116)
Capital lease obligation payment (54) (117)
Principal payments on short-term notes payable      
Principal payments on revolving credit facility    (3,500)
Net cash (used in) provided by financing activities (403) 1,175
Net decrease in cash and cash equivalents (301) 2,335
Cash and cash equivalents, beginning of period 4,477 3,749
Cash and cash equivalents, end of quarter 4,176 6,084
Supplemental disclosures of cash flow information:    
Interest paid 21 97
Income taxes paid 139 116
Non-cash investing and financing activities:    
Common stock issuance to acquire intangible assets    $ 219