Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			$ (11,886)
Other comprehensive income (loss) before reclassifications			(2,039)
Amounts reclassified from accumulated other comprehensive income (loss)			625
Net current-period other comprehensive income (loss)	1,824	1,907	(1,414)		3,324
Accumulated other comprehensive income (loss), ending balance	(13,300)		(13,300)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			(12,638)
Other comprehensive income (loss) before reclassifications			(530)
Amounts reclassified from accumulated other comprehensive income (loss)			0
Net current-period other comprehensive income (loss)			(530)
Accumulated other comprehensive income (loss), ending balance	(13,168)		(13,168)
Equity interest in investees’ other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			1,214
Other comprehensive income (loss) before reclassifications			(1,265)
Amounts reclassified from accumulated other comprehensive income (loss)			0
Net current-period other comprehensive income (loss)			(1,265)
Accumulated other comprehensive income (loss), ending balance	(51)		(51)
Unrealized gain (loss) on available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			(305)
Other comprehensive income (loss) before reclassifications			(244)
Amounts reclassified from accumulated other comprehensive income (loss)			520	[1]
Net current-period other comprehensive income (loss)			276
Accumulated other comprehensive income (loss), ending balance	(29)		(29)
Other changes in other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			(157)
Other comprehensive income (loss) before reclassifications			0
Amounts reclassified from accumulated other comprehensive income (loss)			105	[2]
Net current-period other comprehensive income (loss)			105
Accumulated other comprehensive income (loss), ending balance	$ (52)		$ (52)

[1] Unrealized income (loss) on available-for-sale securities affected Other income (expense), net on the Condensed ConsolidatedStatement of Operations

[2] Other changes in other comprehensive income affected Interest expense and Tax expense on the Condensed Consolidated Statement of Operations