Consolidated Condensed Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Consolidated Condensed Statements Of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 654	$ (290)	$ (3,599)	$ (4,544)
Realized foreign currency translation loss from discontinued operations previously unrealized, net of taxes of $0				280
Unrealized foreign currency translation adjustment from continuing operations, net of taxes of $0	5	9	31	(10)
Investment in partnerships, net of taxes of $0				118
Pension and postretirement obligations, net of taxes of $0	5	5	15	15
Comprehensive income (loss)	$ 664	$ (276)	$ (3,553)	$ (4,141)