Annual report pursuant to Section 13 and 15(d)

Accumulated Other Comprehensive Income (Accumulated Other Comprehensive Income, Net of Related Tax Effects) (Details)

v3.3.1.900
Accumulated Other Comprehensive Income (Accumulated Other Comprehensive Income, Net of Related Tax Effects) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income at beginning of period $ 15,833 $ 35,360 $ 46,663
Other comprehensive income (loss) before reclassifications (23,970) (17,816) (7,263)
Amounts reclassified from other comprehensive income (12,699) (1,711) (4,040)
Net other comprehensive income (loss) during the period (36,669) (19,527) (11,303)
Accumulated other comprehensive income at end of period (20,836) 15,833 35,360
Unrealized Holding Gains (Losses) on Available-For-Sale Securities [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income at beginning of period 4 (6) (9)
Other comprehensive income (loss) before reclassifications (6) 10 3
Amounts reclassified from other comprehensive income 0 0 0
Net other comprehensive income (loss) during the period (6) 10 3
Accumulated other comprehensive income at end of period (2) 4 (6)
Unrealized Holding Gains (Losses) on Derivative Transactions [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income at beginning of period 8,995 1,244 2,505
Other comprehensive income (loss) before reclassifications 9,791 9,462 2,779
Amounts reclassified from other comprehensive income (12,699) (1,711) (4,040)
Net other comprehensive income (loss) during the period (2,908) 7,751 (1,261)
Accumulated other comprehensive income at end of period 6,087 8,995 1,244
Foreign Currency Translation Adjustment [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income at beginning of period 6,834 34,122 44,167
Other comprehensive income (loss) before reclassifications (33,755) (27,288) (10,045)
Amounts reclassified from other comprehensive income 0 0 0
Net other comprehensive income (loss) during the period (33,755) (27,288) (10,045)
Accumulated other comprehensive income at end of period $ (26,921) $ 6,834 $ 34,122