Other Comprehensive Income 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), Net of Tax, Beginning of Period			$ (34,384)
Total other comprehensive income (loss), net of tax	21,596	23,694	(1,949)	(940)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(36,333)		(36,333)
Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period			(34,384)	(37,160)
OCI before reclassifications			(2,107)	(980)
Amounts reclassified from AOCI			158	40
Total other comprehensive income (loss), net of tax			(1,949)	(940)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(36,333)	(38,100)	(36,333)	(38,100)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period			(3,313)	(24,718)
OCI before reclassifications			(2,201)	697
Amounts reclassified from AOCI			0	0
Total other comprehensive income (loss), net of tax			(2,201)	697
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(5,514)	(24,021)	(5,514)	(24,021)
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			(1,689)	0
OCI before reclassifications			94	(1,677)
Amounts reclassified from AOCI			170
Total other comprehensive income (loss), net of tax			264	(1,677)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(1,425)	(1,677)	(1,425)	(1,677)
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			(15,002)	1,938
OCI before reclassifications			0	0
Amounts reclassified from AOCI			(12)	40
Total other comprehensive income (loss), net of tax			(12)	40
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	$ (15,014)	$ 1,978	$ (15,014)	$ 1,978