Pension and Other Postretirement Benefit Plans Schedule of Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred tax asset	$ 39,974	$ 3,618
OTHER LONG-TERM LIABILITIES	33,173	38,617
Accumulated other comprehensive income (loss)	(6,330)	(5,456)
Dutch Plan
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred tax asset	1,482	4,369
OTHER LONG-TERM LIABILITIES	5,928	7,398
Accumulated other comprehensive income (loss)	$ (5,640)	$ (5,650)