Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) at beginning of period	$ 38,075	$ 30,025	$ 35,360	$ 46,663
Other comprehensive income (loss) before reclassifications	(10,673)	10,133	(7,079)	(5,223)
Amounts reclassified from other comprehensive income	(306)	(2,253)	(1,185)	(3,535)
Net other comprehensive income (loss) during the period	(10,979)	7,880	(8,264)	(8,758)
Accumulated other comprehensive income at end of period	27,096	37,905	27,096	37,905
Unrealized Gains (Losses) on Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) at beginning of period	(2)	7	(6)	(9)
Other comprehensive income (loss) before reclassifications	0	(9)	4	7
Amounts reclassified from other comprehensive income	0	0	0	0
Net other comprehensive income (loss) during the period	0	(9)	4	7
Accumulated other comprehensive income at end of period	(2)	(2)	(2)	(2)
Unrealized Holding Gains (Losses) on Derivative Transactions [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) at beginning of period	435	4,103	1,244	2,505
Other comprehensive income (loss) before reclassifications	5,404	(951)	5,474	1,929
Amounts reclassified from other comprehensive income	(306)	(2,253)	(1,185)	(3,535)
Net other comprehensive income (loss) during the period	5,098	(3,204)	4,289	(1,606)
Accumulated other comprehensive income at end of period	5,533	899	5,533	899
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) at beginning of period	37,642	25,915	34,122	44,167
Other comprehensive income (loss) before reclassifications	(16,077)	11,093	(12,557)	(7,159)
Amounts reclassified from other comprehensive income	0	0	0	0
Net other comprehensive income (loss) during the period	(16,077)	11,093	(12,557)	(7,159)
Accumulated other comprehensive income at end of period	$ 21,565	$ 37,008	$ 21,565	$ 37,008

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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