Unconsolidated Affiliates Accounted For Under the Equity Method (Summarized Condensed Income Statement) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Net sales	$ 16,563	$ 18,950	$ 33,851
Gross profit	2,507	3,343	5,655
Income (loss) from continuing operations	(861)	746	(224)
Net income (loss)	$ (689)	$ 596	$ (220)