Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net earnings available to common stockholders	$ 5,734	$ 7,475	$ 16,813	$ 9,244
Other comprehensive (loss) income:
Currency translation adjustment, net of taxes of ($12), $17, ($336) and ($14), respectively	(1,982)	3,588	(1,971)	2,020
Unrealized gains (losses) on marketable securities arising during the period, net of taxes of $0 in all periods presented	46	0	45	(1)
Change in unfunded SERP liability, net of taxes of ($28), ($20), ($83) and ($59), respectively	100	66	299	198
Other comprehensive (loss) income	(1,836)	3,654	(1,627)	2,217
Comprehensive income	$ 3,898	$ 11,129	$ 15,186	$ 11,461