Cumulative Other Comprehensive Loss - Schedule of Amounts Recognized in Cumulative Other Comprehensive Loss by Component (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Roll forward of amounts recognized in cumulative other comprehensive loss by component
Balances at beginning of period	$ (38,331)
Other comprehensive income (loss) before reclassifications	(19,841)
Amounts reclassified from cumulative other comprehensive income (loss) to net income (loss)	4,956
Net current period other comprehensive income (loss)	(14,885)
Balances at end of period	(53,216)
Unrealized Gain (Loss) on Derivative Instruments and Other Assets
Roll forward of amounts recognized in cumulative other comprehensive loss by component
Balances at beginning of period	(11,706)
Other comprehensive income (loss) before reclassifications	2,387
Amounts reclassified from cumulative other comprehensive income (loss) to net income (loss)	5,020
Net current period other comprehensive income (loss)	7,407
Balances at end of period	(4,299)
Foreign Currency Translation Adjustments
Roll forward of amounts recognized in cumulative other comprehensive loss by component
Balances at beginning of period	(26,647)
Other comprehensive income (loss) before reclassifications	(22,270)
Amounts reclassified from cumulative other comprehensive income (loss) to net income (loss)	0
Net current period other comprehensive income (loss)	(22,270)
Balances at end of period	(48,917)
Equity in Unrealized Gain (Loss) of an Investee
Roll forward of amounts recognized in cumulative other comprehensive loss by component
Balances at beginning of period	22
Other comprehensive income (loss) before reclassifications	42
Amounts reclassified from cumulative other comprehensive income (loss) to net income (loss)	(64)
Net current period other comprehensive income (loss)	(22)
Balances at end of period	$ 0