Employee Benefit Plans - Schedule of Benefit Obligation, Fair Value of Plan Assets, and Funded Status of our Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Change in Benefit Obligation [Roll Forward]
Service cost	$ 256	$ 267
Interest cost	4,069	4,151
Change in Plan Assets [Roll Forward]
Fair value of plan assets - ending	132,621
Pension Plan, Defined Benefit
Change in Benefit Obligation [Roll Forward]
Benefit obligation - beginning	141,104	166,063
Service cost	255	267
Interest cost	4,045	4,151
Actuarial loss (gain)	11,214	(9,827)
Benefits paid	(4,158)	(3,625)
Settlements		(7,471)
Currency changes	6,220	(8,454)
Benefit obligation - ending	158,680	141,104
Change in Plan Assets [Roll Forward]
Fair value of plan assets - beginning	117,162	134,234
Employer contribution	2,629	2,796
Actual return on plan assets	11,791	(2,084)
Benefits paid	(4,158)	(3,625)
Settlements		(6,731)
Currency changes	5,197	(7,428)
Fair value of plan assets - ending	132,621	117,162
Underfunded status	$ (26,059)	$ (23,942)