Defined Benefit Pension Plans Change in Benefit Obligation and Plan Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4,205,000	$ 2,700,000	$ 2,512,000
Interest cost	3,355,000	3,625,000	3,754,000
Fair value of plan assets at January 1,	8,561,000
Fair value of plan assets at December 31,	11,680,000	8,561,000
Ending balance at fair value (net pension plan benefit liability)	90,982,000	93,205,000
Defined Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at January 1,	101,766,000	72,601,000
Service cost	4,205,000	2,700,000
Interest cost	3,355,000	3,625,000
Actuarial (gain) loss	(6,160,000)	24,492,000
Benefits paid	(5,369,000)	(4,131,000)
Foreign currency exchange rate changes	2,698,000	2,395,000
Other	2,167,000	84,000
Benefit obligation at December 31,	102,662,000	101,766,000
Defined Benefit Plan, Change in Discount Rate	40 basis point
Benefits paid	(5,369,000)	(4,131,000)
Fair Value of Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	(537,000)	(227,000)
Fair value of plan assets at January 1,	8,561,000	7,980,000
Actual return on plan assets	119,000	225,000
Company contributions	436,000	440,000
Benefits paid	(537,000)	(227,000)
Foreign currency exchange rate changes	(267,000)	143,000
Defined Benefit Plan, Other Changes, Plan Assets	3,368,000	0
Fair value of plan assets at December 31,	11,680,000	8,561,000
Ending balance at fair value (net pension plan benefit liability)	$ 90,982,000	$ 93,205,000