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, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation		$ (36,580)	$ (30,300)
Service costs		(1,230)	(1,050)	$ (1,120)
Interest costs		(930)	(1,070)	(1,100)
Participant contributions		(60)	(60)
Actuarial gain (loss)	[1]	(2,420)	(4,190)
Benefit payments		1,140	900
Change in foreign currency		(750)	(810)
Defined Benefit Plan, Benefit Obligation		(40,830)	(36,580)	(30,300)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets		30,260	24,650
Actual return on plan assets		4,780	3,630
Employer contributions		1,140	1,930
Participant contributions		60	60
Benefit payments		(1,140)	(900)
Change in foreign currency		960	890
Fair value of plan assets		36,060	30,260	$ 24,650
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded Status at December 31		$ (4,770)	$ (6,320)

[1] The actuarial losses for the year ended December 31, 2020 and 2019 were primarily due to a decrease in the discount rate utilized in measuring the projected benefit obligations, partially offset by other assumptions and experience gains.