Employee Benefit Plans Defined Benefit Plan Change in Benefit Obligations and Plan Assets Table (Details) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	$ (38,240)	$ (43,730)
Service costs	(950)	(890)	$ (760)
Interest costs	(1,510)	(1,580)	(1,760)
Participant contributions	60	60
Actuarial gain (loss)	(4,080)	(150)
Benefit payments	(1,250)	(1,640)
Settlements and curtailments	2,360	5,210
Change in foreign currency	3,590	1,320
Defined Benefit Plan, Benefit Obligation	(37,640)	(38,240)	(43,730)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets	28,270	32,610
Actual return on plan assets	2,910	50
Employer contributions	1,890	3,640
Participant contributions	60	60
Benefit payments	(1,250)	(1,640)
Settlement payments	(2,530)	(5,210)
Change in foreign currency	(3,090)	(1,240)
Fair value of plan assets	26,260	28,270	$ 32,610
Defined Benefit Plan, Funded Status of Plan [Abstract]
Funded Status at December 31	$ (11,380)	$ (9,970)