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RESTATEMENT OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Cost of sales $ 55,147 $ 52,097 $ 146,366 $ 158,155
Gross profit 4,618 2,715 10,189 6,606
Accounts payable     11,399 (3,175)
Revenues 60,862 55,045 159,313 165,799
Other miscellaneous adjustments that resulted in a decrease to selling, general and administrative expenses (5,216) (5,197) (15,721) (16,658)
Restatement Adjustments
        
Cost of sales (1,636)   (1,033)  
Gross profit 62   883  
Accounts payable     (938)  
Revenues (1,574)   (150)  
Other miscellaneous adjustments that resulted in a decrease to selling, general and administrative expenses 31   67  
Adjustment to present a non-cash capital lease transaction     1,610  
Other Operating Statement Adjustments
        
Cost of sales 55   135  
Other miscellaneous adjustments that resulted in a decrease to selling, general and administrative expenses 31   67  
Tower and Weldments
        
Overstatement of cost of sales     938  
Revenues 47,020 37,423 115,977 109,587
Tower and Weldments | Restatement Adjustments
        
Accounts payable     (938)  
Tower and Weldments | Adjustments Related to Towers and Weldments Overstatement of Cost of Sales
        
Overstatement of cost of sales 244   938  
Gross profit 244   938  
Accounts payable (244)   (938)  
Tower and Weldments | Other Operating Statement Adjustments
        
Cost of sales (1,169)   (162)  
Revenues (1,574)   (150)  
Gearing
        
Revenues 10,138 10,778 28,098 40,256
Gearing | Other Operating Statement Adjustments
        
Cost of sales $ (278)   $ (68)