Interim Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 17,519	$ 20,033	$ 61,018	$ 48,550
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net of tax expense of $(321) and zero, and $(436) and zero, respectively	(9,216)	8,606	(8,660)	(6,244)
Recognition of deferred pension and other post-retirement benefits, net of tax expense of $(67) and $(51), and $(201) and $(155), respectively	251	194	754	582
Unrealized income (loss) on derivative instruments, net of tax (expense) benefit of $(354) and $205, and $(955) and $1,586, respectively	1,331	(986)	3,592	(6,520)
Other comprehensive income (loss), net of tax	(7,634)	7,814	(4,314)	(12,182)
Comprehensive income	$ 9,885	$ 27,847	$ 56,704	$ 36,368