Consolidated Condensed Statements Of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Consolidated Statements Of Comprehensive (Loss) Income [Abstract]
Net loss	$ (2,274)	$ (5,030)	$ (4,253)	$ (4,254)
Realized foreign currency translation loss from discontinued operations previously unrealized, net of taxes of $0		280		280
Unrealized foreign currency translation adjustment from continuing operations, net of taxes of $0	13	(26)	26	(19)
Investment in partnerships, net of taxes of $0				118
Pension and postretirement obligations, net of taxes of $0	5	5	10	10
Comprehensive loss	$ (2,256)	$ (4,771)	$ (4,217)	$ (3,865)