Long-Term Debt, Net - Additional Information (Details)	6 Months Ended
	Jun. 30, 2020 USD ($) SeriesNote instrument
Debt Instrument [Line Items]
Financing lease obligations	$ 0
Number of series of debt issued | SeriesNote	2
Maturity date	Jun. 19, 2023
Line of credit facility, description	The maximum leverage ratio permitted under the Credit Facility is equal to (a) 3.00 to 1.00 from the fiscal quarter ending June 30, 2020 through and including the fiscal quarter ending June 30, 2021; (b) 2.75 to 1.00 for the fiscal quarter ending September 30, 2021; and (c) 2.50 to 1.00 for the fiscal quarter ending December 31, 2021 and thereafter
Current borrowing capacity	$ 225,000,000
Line of credit facility, reduced maximum borrowing capacity	100,000,000
Line of credit facility reduced minimum borrowing capacity	$ 50,000,000
Basis spread on variable rate	1.50%
Performance bonds under credit facility	$ 14,200,000
Remaining borrowing capacity	72,800,000
Performance bonds	5,800,000
Unamortized debt issuance expense	$ 300,000
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, number of instruments held | instrument	2
Derivative, notional amount	$ 50,000,000
Credit Facility [Member]
Debt Instrument [Line Items]
Interest coverage ratio, minimum	3.00%
Calculated covenant leverage ratio	2.21%
Calculated interest coverage ratio	6.74%
Senior Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 150,000,000
Senior Notes Series A [Member]
Debt Instrument [Line Items]
Face amount	$ 75,000,000
Interest rate, effective percentage	4.01%
Maturity date	Sep. 30, 2021
Senior Notes Series B [Member]
Debt Instrument [Line Items]
Face amount	$ 75,000,000
Interest rate, effective percentage	4.11%
Maturity date	Sep. 30, 2023
LIBOR [Member]
Debt Instrument [Line Items]
LIBOR floor interest rate	0.50%
Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.875%