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INCOME TAXES FROM CONTINUING OPERATIONS (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
INCOME TAXES FROM CONTINUING OPERATIONS        
Income tax benefit $ 268 $ 2,800 $ 4,346 $ 5,250
Effective tax rate (as a percent) 4.30% 43.90% 22.90% 5.60%
Goodwill impairment tax benefit recorded       0
Benefit from settlement of income tax audits       1,000
Benefit related to favorable adjustment upon filing of tax returns       538
Projected annual effective tax rate excluding discrete items (as a percent) 26.90%   26.90%  
U.S. statutory income tax rate (as a percent) 35.00%   35.00%  
QA business
       
Discontinued operations        
Income tax benefit from final taxable gain recorded to discontinued operations   $ 4,246