Other Employee Benefit Plans (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Change in benefit obligation:
Benefit obligation	$ 3,600	$ 3,700
Unfunded status	3,600	$ (3,700)
Funded status and projected benefit obligation:
Liability, Defined Benefit Plan, Current	1,300
Defined benefit pension plan for employees outside the United States
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	$ 600
Funded status and projected benefit obligation:
Discount rate	1.40%	1.90%