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SEGMENT REPORTING (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
SEGMENT REPORTING          
Revenues from external customers $ 51,363 $ 56,311 $ 97,027 $ 110,754  
Operating profit (loss) (3,333) (4,159) (7,829) (8,100)  
Depreciation and Amortization 4,047 3,910 8,033 7,860  
Capital Expenditures 1,354 1,450 2,729 2,165  
Total Assets 163,060   163,060   142,910
Markup over costs (as a percent) 10.00%   10.00%    
Tower and Weldments
          
SEGMENT REPORTING          
Number of facilities 2   2    
Revenues from external customers 37,507 36,995 67,533 72,164  
Intersegment revenues     3    
Operating profit (loss) 4,103 561 6,105 1,566  
Depreciation and Amortization 949 904 1,900 1,780  
Capital Expenditures 243 382 485 413  
Total Assets 60,400   60,400   50,801
Tower and Weldments | Minimum
          
SEGMENT REPORTING          
Typical capacity of wind turbines for which towers are manufactured (in megawatts)     2    
Tower and Weldments | Maximum
          
SEGMENT REPORTING          
Annual tower production capacity (in towers)     500    
Power generating capacity of turbines that towers produced annually can support (in megawatts)     1,200    
Gearing
          
SEGMENT REPORTING          
Revenues from external customers 9,791 13,646 17,960 29,479  
Intersegment revenues 654 417 3,204 617  
Operating profit (loss) (3,882) (1,632) (6,743) (2,753)  
Depreciation and Amortization 2,745 2,550 5,455 5,222  
Capital Expenditures 1,012 399 1,655 764  
Total Assets 69,513   69,513   71,371
Services
          
SEGMENT REPORTING          
Revenues from external customers 4,065 5,670 11,534 9,111  
Intersegment revenues   25 15 26  
Operating profit (loss) (1,262) (1,139) (1,962) (2,763)  
Depreciation and Amortization 342 439 655 824  
Capital Expenditures 20 658 233 900  
Total Assets 16,148   16,148   13,976
Corporate
          
SEGMENT REPORTING          
Operating profit (loss) (2,250) (1,960) (5,189) (4,175)  
Depreciation and Amortization 11 17 23 34  
Capital Expenditures 79 11 356 88  
Total Assets 305,586   305,586   308,336
Eliminations
          
SEGMENT REPORTING          
Intersegment revenues (654) (442) (3,222) (643)  
Operating profit (loss) (42) 11 (40) 25  
Total Assets (289,377)   (289,377)   (309,616)
Assets held for sale
          
SEGMENT REPORTING          
Total Assets $ 790   $ 790   $ 8,042