Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total net sales	$ 130,053	$ 118,365	$ 400,655	$ 381,835
Total cost of sales	107,777	96,304	333,388	308,514
Gross profit	22,276	22,061	67,267	73,321
Selling and administrative expenses	20,056	17,066	57,849	56,273
Amortization expense	1,462	1,428	4,397	4,271
Interest expense - net	722	940	2,454	2,841
Other income - net	(2,880)	(209)	(2,751)	(1,909)
Income from continuing operations before income taxes	2,916	2,836	5,318	11,845
Income tax expense (benefit) from continuing operations	676	(13,742)	1,494	(11,698)
Income from continuing operations	2,240	16,578	3,824	23,543
Net loss attributable to noncontrolling interest	(30)	0	(64)	0
Income from continuing operations attributable to L.B. Foster Company	2,270	16,578	3,888	23,543
Discontinued operations:
Income (loss) from discontinued operations before income taxes	72	(13,478)	72	(23,565)
Income tax benefit from discontinued operations	0	(3,730)	0	(5,509)
Income (loss) from discontinued operations	72	(9,748)	72	(18,056)
Net income attributable to L.B. Foster Company	$ 2,342	$ 6,830	$ 3,960	$ 5,487
Basic income (loss) per common share:
From continuing operations (usd per share)	$ 0.21	$ 1.57	$ 0.36	$ 2.24
From discontinued operations (usd per share)	0.01	(0.92)	0.01	(1.72)
Basic income (loss) per common share (usd per share)	0.22	0.65	0.37	0.52
Diluted income (loss) per common share:
From continuing operations (usd per share)	0.21	1.56	0.36	2.21
From discontinued operations (usd per share)	0.01	(0.92)	0.01	(1.69)
Diluted income (loss) per common share (usd per share)	$ 0.22	$ 0.64	$ 0.37	$ 0.52
Sales of goods
Total net sales	$ 112,813	$ 101,945	$ 351,668	$ 321,212
Total cost of sales	93,521	82,881	292,733	263,537
Sales of services
Total net sales	17,240	16,420	48,987	60,623
Total cost of sales	$ 14,256	$ 13,423	$ 40,655	$ 44,977