Other Comprehensive Income 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), Net of Tax, Beginning of Period			$ (21,722)
Total other comprehensive income (loss), net of tax	(48,893)	21,596	(60,003)	(1,949)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(81,725)		(81,725)
Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period			(21,722)	(34,384)
OCI before reclassifications			(60,477)	(2,107)
Amounts reclassified from AOCI			474	158
Total other comprehensive income (loss), net of tax			(60,003)	(1,949)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(81,725)	(36,333)	(81,725)	(36,333)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period			3,799	(3,313)
OCI before reclassifications			(60,760)	(2,201)
Amounts reclassified from AOCI			0	0
Total other comprehensive income (loss), net of tax			(60,760)	(2,201)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(56,961)	(5,514)	(56,961)	(5,514)
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period			(1,256)	(1,689)
OCI before reclassifications			(344)	94
Amounts reclassified from AOCI			788	170
Total other comprehensive income (loss), net of tax			444	264
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(812)	(1,425)	(812)	(1,425)
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period			(14,380)	(14,380)
OCI before reclassifications			0	0
Amounts reclassified from AOCI			0	0
Total other comprehensive income (loss), net of tax			0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(14,380)	(14,380)	(14,380)	(14,380)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period			(9,885)	(15,002)
OCI before reclassifications			627	0
Amounts reclassified from AOCI			(314)	(12)
Total other comprehensive income (loss), net of tax			313	(12)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	$ (9,572)	$ (15,014)	$ (9,572)	$ (15,014)