Consolidated Condensed Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Consolidated Condensed Statements Of Comprehensive (Loss) Income [Abstract]
Net income (loss)	$ 714	$ (1,979)
Unrealized foreign currency translation adjustment	25	13
Realized pension and postretirement obligations	12	5
Other	115
Comprehensive income (loss)	$ 866	$ (1,961)