Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Total net sales	$ 98,794	$ 116,080
Total cost of sales	82,347	97,250
Gross profit	16,447	18,830
Selling and administrative expenses	17,298	18,026
Amortization expense	1,436	1,465
Operating loss	(2,287)	(661)
Interest expense - net	370	871
Other (income) expense - net	(563)	59
Loss before income taxes	(2,094)	(1,591)
Income tax benefit	(508)	(321)
Net loss	(1,586)	(1,270)
Net loss attributable to noncontrolling interest	(20)	(12)
Net loss attributable to L.B. Foster Company	$ (1,566)	$ (1,258)
Basic income (loss) per common share (usd per share)	$ (0.15)	$ (0.12)
Diluted income (loss) per common share (usd per share)	$ (0.15)	$ (0.12)
Sales of goods
Total net sales	$ 84,421	$ 100,546
Total cost of sales	69,845	84,125
Sales of services
Total net sales	14,373	15,534
Total cost of sales	$ 12,502	$ 13,125