CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues	$ 971,578	$ 717,699	$ 901,238
Cost of revenues	852,591	643,623	796,101
Gross profit	118,987	74,076	105,137
Selling, general and administrative expenses	69,406	68,228	64,501
Goodwill and other impairment	0	29,017	0
Operating income (loss)	49,581	(23,169)	40,636
Other (income) expense	(878)	728	2,225
Interest expense	11,179	20,603	16,855
Loss on extinguishment of debt	7,155	0	0
Income (loss) before provision for income taxes	32,125	(44,500)	21,556
Provision (benefit) for income taxes	8,393	(7,451)	5,778
Net income (loss)	$ 23,732	$ (37,049)	$ 15,778
Earnings (loss) per common share
Basic Earnings (Loss) Per Share	$ 0.75	$ (1.20)	$ 0.52
Diluted Earnings (Loss) Per Share	$ 0.72	$ (1.20)	$ 0.51
Weighted average shares outstanding
Basic (in shares)	31,501	30,943	30,602
Diluted (in shares)	32,790	30,943	30,823