Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenues	$ 872,662	$ 647,899	$ 290,783
Cost of Revenues	669,861	497,138	279,228
Gross profit	202,801	150,761	11,555
Operating Expenses
General and administrative	55,634	41,212	46,878
Contingent consideration	26,441	640	(825)
Depreciation and amortization	25,514	25,500	26,708
Total Operating Expenses	107,589	67,352	72,761
Income (loss) from Operations	95,212	83,409	(61,206)
Other Expense
Other expense, net	(2,305)	(33)	(447)
Interest expense	(15,129)	(18,797)	(19,043)
Total Other Expense	(17,434)	(18,830)	(19,490)
Income (Loss) Before Income Tax Expense (Benefit)	77,778	64,579	(80,696)
Income Tax Expense (Benefit)	18,705	24,834	(19,932)
Net Income (loss)	$ 59,073	$ 39,745	$ (60,764)
Earnings (loss) per share
Basic (in dollars per share)	$ 0.49	$ 0.33	$ (0.51)
Diluted (in dollars per share)	$ 0.49	$ 0.33	$ (0.51)
Weighted average number of shares
Basic (in shares)	121,467	119,994	119,994
Diluted (in shares)	121,514	119,994	119,994