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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS          
Revenues $ 60,862 $ 55,045 $ 159,313 $ 165,799  
Cost of sales 55,147 52,097 146,366 158,155  
Restructuring 1,097 233 2,758 1,038  
Gross profit 4,618 2,715 10,189 6,606  
OPERATING EXPENSES:          
Selling, general and administrative 5,216 5,197 15,721 16,658  
Intangible amortization 111 664 1,441 1,094  
Regulatory settlement 1,500   1,500    
Restructuring 79 381 787 481  
Total operating expenses 6,906 6,242 19,449 18,233  
Operating loss (2,288) (3,527) (9,260) (11,627)  
OTHER INCOME (EXPENSE), net:          
Interest expense, net (177) (553) (795) (1,053)  
Other, net (4) 148 511 758  
(Loss) gain on sale of assets and restructuring (1) (15) 2,965 (86)  
Total other income (expense), net (182) (420) 2,681 (381)  
Net loss from continuing operations before provision for income taxes (2,470) (3,947) (6,579) (12,008)  
Provision (benefit) for income taxes 28 (9) 64 21  
LOSS FROM CONTINUING OPERATIONS (2,498) (3,938) (6,643) (12,029)  
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX 100   (110)    
NET LOSS $ (2,398) $ (3,938) $ (6,753) $ (12,029) $ (17,907)
NET LOSS PER COMMON SHARE - BASIC AND DILUTED:          
Loss from continuing operations (in dollars per share) $ (0.18) $ (0.28) $ (0.46) $ (0.86)  
Loss from discontinued operations (in dollars per share) $ 0.01   $ (0.01)    
Net loss (in dollars per share) $ (0.17) $ (0.28) $ (0.47) $ (0.86)  
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING - Basic and diluted (in shares) 14,525 14,093 14,405 14,022