Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net earnings (loss) available to common stockholders	$ 7,475	$ (6,490)	$ 9,244	$ (2,391)
Other comprehensive income (loss):
Currency translation adjustment, net of taxes of $17 in the three months ended September 30, 2020, ($13) in the three months ended September 30, 2019, ($14) in the nine months ended September 30, 2020 and ($12) in the nine months ended September 30, 2019	3,588	(2,561)	2,019	(2,854)
Change in unfunded SERP liability, net of taxes of ($20) in the three months ended September 30, 2020, ($11) in the three months ended September 30, 2019, ($59) in the nine months ended September 30, 2020 and ($33) in the nine months ended September 30, 2019	66	37	198	111
Other comprehensive income (loss)	3,654	(2,524)	2,217	(2,743)
Comprehensive income (loss)	$ 11,129	$ (9,014)	$ 11,461	$ (5,134)