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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Valuation Allowance [Line Items]        
Effective income tax rate, percent 17.90% 31.40% 154.90% 31.70%
Income tax expense $ 1,540 $ 1,966 $ 9,624 $ 13,360
Decrease in valuation reserve 2,700      
UDC Ireland Limited [Member]        
Valuation Allowance [Line Items]        
Impact of exclusion of year-to-date losses on tax provision $ (6,600)      
Impact of exclusion of year-to-date losses on effective tax rate, percent 106.80%