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CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Income Statement [Abstract]    
Revenues $ 31,574 $ 33,326
Cost of goods sold 32,161 31,240
Gross profit (loss) (587) 2,086
Research and development expenses 86 97
Selling, general and administrative expenses 3,295 2,999
Operating loss (3,968) (1,010)
Interest expense    
Interest rate expense 2,842 2,678
Amortization expense 1,683 1,355
Other expense 28 64
Loss before income taxes (8,521) (5,107)
Income tax expense 6 6
Net loss (8,527) (5,113)
Other comprehensive income (loss)    
Foreign currency translation adjustment 369 (6)
Comprehensive loss $ (8,158) $ (5,119)
Net income(loss) per common share    
Basic $ (0.43) $ (0.26)
Diluted $ (0.43) $ (0.26)
Weighted average shares outstanding    
Basic 19,776 19,648
Diluted 19,776 19,648