Long-Term Debt, Net - Additional Information (Details)		3 Months Ended
	Oct. 16, 2020 USD ($) SeriesNote	Mar. 31, 2021 USD ($) SeriesNote instrument interest_rate_swap
Debt Instrument [Line Items]
Financing lease obligations		$ 0
Number of series of debt issued | SeriesNote	2	4
Maturity date		Jun. 19, 2023
Current borrowing capacity		$ 225,000,000
Line of credit facility reduced minimum borrowing capacity		$ 50,000,000
Basis spread on variable rate		1.50%
Performance bonds under credit facility		$ 11,100,000
Remaining borrowing capacity		213,900,000
Performance bonds		$ 6,000,000.0
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, number of instruments held | instrument		2
Derivative, notional amount		$ 50,000,000
Number of interest rate swap agreements were terminated and settled during the period. | interest_rate_swap		2
Forward Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, number of instruments held | instrument		2
Derivative, notional amount		$ 35,000,000
Number of interest rate swap agreements were terminated and settled during the period. | interest_rate_swap		2
Credit Facility [Member]
Debt Instrument [Line Items]
Interest coverage ratio, minimum		3.00%
Calculated covenant leverage ratio		2.33%
Calculated interest coverage ratio		5.58%
Senior Notes [Member]
Debt Instrument [Line Items]
Face amount		$ 210,000,000
Senior Notes Series A [Member]
Debt Instrument [Line Items]
Face amount	$ 45,000,000	$ 75,000,000
Interest rate, effective percentage	4.09%	4.01%
Maturity date	Jan. 12, 2026	Sep. 30, 2021
Senior Notes Series B [Member]
Debt Instrument [Line Items]
Face amount	$ 15,000,000	$ 75,000,000
Interest rate, effective percentage	4.38%	4.11%
Maturity date	Jan. 12, 2028	Sep. 30, 2023
2021 Senior Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 60,000,000
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%