Cumulative Other Comprehensive (Loss) Income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Roll forward of amounts recognized in cumulative other comprehensive (loss) income by component
Balances at beginning of period	$ 565
Other comprehensive income (loss) before reclassifications	(43,900)
Amounts reclassified from cumulative other comprehensive (loss) income to net loss	5,004
Net current period other comprehensive income (loss)	(38,896)
Balances at end of period	(38,331)
Unrealized Gain (Loss) on Derivative Instruments
Roll forward of amounts recognized in cumulative other comprehensive (loss) income by component
Balances at beginning of period	(16,624)
Other comprehensive income (loss) before reclassifications	(103)
Amounts reclassified from cumulative other comprehensive (loss) income to net loss	5,021
Net current period other comprehensive income (loss)	4,918
Balances at end of period	(11,706)
Foreign Currency Translation Adjustments
Roll forward of amounts recognized in cumulative other comprehensive (loss) income by component
Balances at beginning of period	17,071
Other comprehensive income (loss) before reclassifications	(43,718)
Net current period other comprehensive income (loss)	(43,718)
Balances at end of period	(26,647)
Equity in Unrealized Gain (Loss) of an Investee
Roll forward of amounts recognized in cumulative other comprehensive (loss) income by component
Balances at beginning of period	118
Other comprehensive income (loss) before reclassifications	(79)
Amounts reclassified from cumulative other comprehensive (loss) income to net loss	(17)
Net current period other comprehensive income (loss)	(96)
Balances at end of period	$ 22