Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net loss	$ (2,986)	$ (1,032)
Other comprehensive income
Foreign currency translation adjustments		4,766
Amortization of net prior service costs and net actuarial losses, net of tax		1,145
Other comprehensive income		5,911
Comprehensive (loss) income	$ (2,986)	$ 4,879