Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			$ (11,886)
Other comprehensive income (loss) before reclassifications			(3,416)
Amounts reclassified from accumulated other comprehensive income (loss)			178
Net current-period other comprehensive income (loss)	418	(1,667)	(3,238)		1,417
Accumulated other comprehensive income (loss), ending balance	(15,124)		(15,124)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			(12,638)
Other comprehensive income (loss) before reclassifications			(3,044)
Amounts reclassified from accumulated other comprehensive income (loss)			0
Net current-period other comprehensive income (loss)			(3,044)
Accumulated other comprehensive income (loss), ending balance	(15,682)		(15,682)
Accumulated Equity Interest in Investees' Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			1,214
Other comprehensive income (loss) before reclassifications			(549)
Amounts reclassified from accumulated other comprehensive income (loss)			0
Net current-period other comprehensive income (loss)			(549)
Accumulated other comprehensive income (loss), ending balance	665		665
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance			(305)
Other comprehensive income (loss) before reclassifications			177
Amounts reclassified from accumulated other comprehensive income (loss)			99	[1]
Net current-period other comprehensive income (loss)			276
Accumulated other comprehensive income (loss), ending balance	(29)		(29)
Accumulated Other Changes Adjustment [Member]
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)			79	[2]
Net current-period other comprehensive income (loss)			79
Accumulated other comprehensive income (loss), ending balance	$ (78)		$ (78)

[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