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INCOME TAXES: (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Income Tax Disclosure [Line Items]        
Income Tax Expense (Benefit) $ 8,605 $ 4,702 $ 17,183 $ 11,383
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest, Total $ 3,197 $ (3,853) $ (8,527) $ (10,477)