Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ (3,777)	$ 5,547	$ 1,120
Realized foreign currency translation loss from discontinued operations previously unrealized, net of taxes of $0 (Note 2)	280
Realized foreign currency translation gain from investment in partnerships, net of taxes of $0	118
Unrealized foreign currency translation adjustment from continuing operations, net of taxes of $0	(10)	(206)	235
Interest rate swap, net of taxes of $0		(8)	26
Pension and postretirement obligations, net of taxes of $0	19	20	20
Comprehensive income (loss)	$ (3,370)	$ 5,353	$ 1,401