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CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME / (LOSS) (Unaudited) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Income Statement [Abstract]        
Revenues $ 57,195 $ 47,353 $ 117,860 $ 66,773
Cost of goods sold 45,842 43,602 90,883 62,775
Gross profit 11,353 3,751 26,977 3,998
Research and development expenses 141 124 241 353
Selling, general and administrative expenses 3,449 3,984 6,291 8,199
Operating income/(loss) 7,763 (357) 20,445 (4,554)
Other income/(expense)        
Interest rate expense (2,530) (2,913) (5,450) (5,583)
Amortization expense (2,502) (6,072) (4,620) (8,346)
Loss on debt extinguishment 0 (231) (115) (1,188)
Gain (loss) on sale/disposal of assets (119) 48 (119) 174
Other income 110 (68) 274 97
Income (loss) before income taxes 2,722 (9,593) 10,415 (19,400)
Income tax expense 0 0 (6) (6)
Net income/(loss) 2,722 (9,593) 10,409 (19,406)
Other comprehensive income        
Foreign currency translation adjustment 0 (600) 108 (400)
Comprehensive income (loss) $ 2,722 $ (10,193) $ 10,517 $ (19,806)
Net income(loss) per common share        
Basic $ 0.13 $ (0.51) $ 0.52 $ (1.04)
Diluted $ 0.13 $ (0.51) $ 0.49 $ (1.04)
Weighted average shares outstanding        
Basic 20,284 18,964 20,146 18,596
Diluted 20,948 18,964 21,299 18,596