Employee Benefit Plans Defined Benefit Plan Change in Benefit Obligations and Plan Assets Table (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations at December 31	$ (20,200)	$ (36,320)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	(38,730)	(34,560)
Service costs	(680)	(600)	(640)
Interest costs	(1,610)	(1,620)	(1,590)
Participant contributions	60	40
Actuarial gain (loss)	1,280	(2,900)
Benefit payments	(1,850)	(1,890)
Curtailment/terminations	0	(190)
Change in foreign currency	(280)	(710)
Defined Benefit Plan, Benefit Obligation	(38,230)	(38,730)	(34,560)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets	27,860	21,280
Actual return on plan assets	2,270	1,680
Employer contributions	3,240	6,130
Participant contributions	60	40
Benefit payments	(1,850)	(1,890)
Change in foreign currency	200	620
Fair value of plan assets	31,780	27,860	21,280
Defined Benefit Plan, Funded Status of Plan [Abstract]
Funded Status at December 31	(6,450)	(10,870)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations at December 31	(810)	(970)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	(970)	(1,040)
Service costs	0	0	0
Interest costs	(40)	(50)	(50)
Participant contributions	0	10
Actuarial gain (loss)	170	80
Benefit payments	(30)	(50)
Curtailment/terminations	0	0
Change in foreign currency	0	0
Defined Benefit Plan, Benefit Obligation	(810)	(970)	(1,040)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets	0	0
Actual return on plan assets	0	0
Employer contributions	30	40
Participant contributions	0	10
Benefit payments	(30)	(50)
Change in foreign currency	0	0
Fair value of plan assets	0	0	0
Defined Benefit Plan, Funded Status of Plan [Abstract]
Funded Status at December 31	$ (810)	$ (970)