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DERIVATIVES (INCOME STATEMENT CLASSIFICATION) (DETAILS) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]        
Interest Expense. $ 3,469 $ 2,041 $ 8,699 $ 5,758
Other nonoperating income expense (4,416) (6,254) (6,573) (7,488)
Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Cash Flow [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain or (loss) recognized in other comprehensive income (loss) - effective portion, net of tax: (3,487) (4,119) (10,625) (10,939)
Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Cash Flow [Member] | Reclassification from accumulated other comprehensive income | Revenue        
Derivative Instruments, Gain (Loss) [Line Items]        
Revenues (5,812) (7,103) (17,709) (18,860)
Designated as Hedging Instruments [Member] | Interest Rate | Cash Flow [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain or (loss) recognized in other comprehensive income (loss) - effective portion, net of tax:   (60) (69) (252)
Designated as Hedging Instruments [Member] | Interest Rate | Cash Flow [Member] | Reclassification from accumulated other comprehensive income | Interest Expense        
Derivative Instruments, Gain (Loss) [Line Items]        
Interest Expense.   (104) (115) (435)
Not Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Fair Value [Member] | Other income (expense), net        
Derivative Instruments, Gain (Loss) [Line Items]        
Other nonoperating income expense $ (1,186) $ (3,674) $ (1,545) $ (3,616)