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Condensed Consolidated Statements Of Cash Flows (USD $)
In Thousands
 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Cash flows from operating activities:    
Net loss $ (1,049) $ (1,552)
Adjustments to reconcile net loss to net cash used in operating activities:    
Provision for bad debt 167 67
Allowance for obsolete inventory 16 55
Depreciation and amortization 382 465
Gain on sale of property and equipment (6) (52)
Equity income from joint venture (498) (923)
Stock based compensation 112 131
Deferred compensation costs 15 15
Deferred income tax benefit (675) (836)
Customer settlement   100
Change in operating assets and liabilities:    
Accounts receivable (including other and non-current contract retentions) 696 2,098
Income taxes receivable (payable) (10) (145)
Inventories (1,028) (535)
Costs and estimated earnings in excess of billings on uncompleted contracts 827 1,172
Prepaid expenses and other assets (7) (45)
Accounts payable and accrued liabilities 488 (1,049)
Billings in excess of costs and estimated earnings on uncompleted contracts 22 185
Net cash used in operating activities (548) (849)
Cash flows from investing activities:    
Purchases of property, plant and equipment (139) (249)
Proceeds from disposal of property, plant and equipment 6 52
Proceeds from joint venture dividends 1,052 1,039
Advances to joint venture (69)  
Net cash provided by investing activities 850 842
Cash flows from financing activities:    
Proceeds from sale of common stock 16 18
Capital lease obligation payment (76) (72)
Advances from revolving credit facility 1,000  
Principal payments on short-term notes payable (50)  
Net cash provided by (used in) financing activities 890 (54)
Net increase (decrease) in cash and cash equivalents 1,192 (61)
Cash and cash equivalents, beginning of period 1,364 1,497
Cash and cash equivalents, end of period 2,556 1,436
Supplemental disclosures of cash flow information:    
Interest paid 68 44
Income taxes paid $ 24 $ 145