Restatement of Previously Issued Consolidated Financial Statements - Effect of The Error Corrections On The Consolidated Statements of Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	$ 187,105	$ 243,164
Cost of Revenues	166,802	210,075
Gross Profit	20,303	33,089
Selling, General and Administrative Expenses	17,099	15,199
Amortization Expense	860	321
Operating (Loss) Income	(26,523)	17,569
Interest and Other Expense	5,365	4,396
(Loss) Income Before Provision for Income Taxes	(31,888)	13,173
(Benefit) Provision for Income Taxes	(7,294)	3,187
Net (Loss) Income	$ (24,594)	$ 9,986
(Loss) earnings per Common Share:
Basic (in dollars per share)	$ (0.80)	$ 0.33
Diluted (in dollars per share)	$ (0.80)	$ 0.33
Weighted Average Shares Outstanding:
Basic (in shares)	30,806	30,513
Diluted (in shares)	30,806	30,694
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		$ 243,164
Cost of Revenues		208,604
Gross Profit		34,560
Selling, General and Administrative Expenses		15,199
Amortization Expense		321
Operating (Loss) Income		19,040
Interest and Other Expense		4,396
(Loss) Income Before Provision for Income Taxes		14,644
(Benefit) Provision for Income Taxes		3,514
Net (Loss) Income		$ 11,130
(Loss) earnings per Common Share:
Basic (in dollars per share)		$ 0.36
Diluted (in dollars per share)		$ 0.36
Weighted Average Shares Outstanding:
Basic (in shares)		30,513
Diluted (in shares)		30,694
Restatement Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		$ 0
Cost of Revenues		1,471
Gross Profit		(1,471)
Selling, General and Administrative Expenses		0
Amortization Expense		0
Operating (Loss) Income		(1,471)
Interest and Other Expense		0
(Loss) Income Before Provision for Income Taxes		(1,471)
(Benefit) Provision for Income Taxes		(327)
Net (Loss) Income		$ (1,144)
(Loss) earnings per Common Share:
Basic (in dollars per share)		$ (0.04)
Diluted (in dollars per share)		$ (0.04)
Weighted Average Shares Outstanding:
Basic (in shares)		30,513
Diluted (in shares)		30,694