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Debt - Narrative (Details)			3 Months Ended		12 Months Ended
Debt - Narrative (Details)	Dec. 31, 2020 USD ($)	Oct. 02, 2019 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Oct. 02, 2024 USD ($)	Jun. 30, 2020 USD ($) entity
Debt Instrument [Line Items]
Gross long-term debt	$ 375,397,000			$ 375,397,000					$ 375,397,000	$ 443,035,000
Amortization of debt issuance costs and non-cash interest									2,920,000	2,307,000	$ 2,073,000
Loss on extinguishment of debt				$ 301,000					$ 301,000	7,728,000	0
Consolidated 50% owned subsidiaries, number of entities \| entity													2
Consolidated ownership percentage	50.00%			50.00%					50.00%				50.00%
CARES Act PPP loan													$ 9,800,000
Plateau
Debt Instrument [Line Items]
Liabilities incurred		$ 10,000,000
Tealstone
Debt Instrument [Line Items]
Promissory notes issued to the sellers									$ 5,000,000
Deferred cash payments due	$ 7,500,000			$ 7,500,000					7,500,000
Accretion expense									$ 273,000	1,086,000	$ 1,177,000
Credit Agreement \| Greater than or equal to 2.50
Debt Instrument [Line Items]
Leverage ratio									2.50
Excess cash flow prepayment percent									75.00%
Credit Agreement \| Greater than or equal to 2.00 but less than 2.50
Debt Instrument [Line Items]
Excess cash flow prepayment percent									50.00%
Credit Agreement \| Greater than or equal to 2.00 but less than 2.50 \| Minimum
Debt Instrument [Line Items]
Leverage ratio									2.00
Credit Agreement \| Greater than or equal to 2.00 but less than 2.50 \| Maximum
Debt Instrument [Line Items]
Leverage ratio									2.50
Credit Agreement \| Greater than or equal to 1.50 but less than 2.00
Debt Instrument [Line Items]
Excess cash flow prepayment percent									25.00%
Credit Agreement \| Greater than or equal to 1.50 but less than 2.00 \| Minimum
Debt Instrument [Line Items]
Leverage ratio									1.50
Credit Agreement \| Greater than or equal to 1.50 but less than 2.00 \| Maximum
Debt Instrument [Line Items]
Leverage ratio									2.00
Credit Agreement \| Less than 1.50
Debt Instrument [Line Items]
Leverage ratio									1.50
Excess cash flow prepayment percent									0.00%
Cash flow prepayment term									5 days
Secured Debt
Debt Instrument [Line Items]
Fixed charge ratio minimum									1.20
Secured Debt \| Interest Rate Swap
Debt Instrument [Line Items]
Derivative notional amount	350,000,000			350,000,000					$ 350,000,000
Secured Debt \| Credit Facility
Debt Instrument [Line Items]
Gross long-term debt	355,000,000			355,000,000					$ 355,000,000	420,000,000
Secured Debt \| Credit Agreement
Debt Instrument [Line Items]
Debt instrument, face amount		475,000,000
Secured Debt \| Credit Agreement \| October 1, 2019 - June 30, 2020
Debt Instrument [Line Items]
Leverage ratio									4.00
Secured Debt \| Credit Agreement \| July 1, 2020 - September 30, 2020
Debt Instrument [Line Items]
Leverage ratio									3.75
Secured Debt \| Credit Agreement \| October 1, 2020 - March 31, 2021
Debt Instrument [Line Items]
Leverage ratio									3.50
Secured Debt \| Credit Agreement \| April 1, 2021 - June 30, 2021
Debt Instrument [Line Items]
Leverage ratio									3.25
Secured Debt \| Credit Agreement \| October 1, 2021 - December 31, 2021
Debt Instrument [Line Items]
Leverage ratio									3.00
Secured Debt \| Term Loan Facility
Debt Instrument [Line Items]
Gross long-term debt	$ 355,000,000			$ 355,000,000					$ 355,000,000	400,000,000
Weighted average interest rate	5.74%			5.74%					5.74%
Periodic payments									$ 30,000,000
Excess cash flow payment									32,700,000
Repayments of debt				$ 15,000,000
Secured Debt \| Term Loan Facility \| Forecast
Debt Instrument [Line Items]
Gross long-term debt												$ 172,500,000
Periodic payments					$ 15,000,000	$ 50,000,000	$ 50,000,000	$ 50,000,000
Repayments of debt			$ 17,700,000
Secured Debt \| Term Loan Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount		400,000,000
Line of Credit \| the Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity		75,000,000
Debt instrument, LIBOR interest rate	0.15%
Line of credit, remaining borrowing capacity	$ 75,000,000			$ 75,000,000					$ 75,000,000
Weighted average interest rate	6.68%			6.68%					6.68%
Line of Credit \| the Revolving Credit Facility \| Revolving Credit Facility \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	4.50%
Line of Credit \| the Revolving Credit Facility \| Swing Line Loan
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity		$ 15,000,000
Notes Payable \| Plateau
Debt Instrument [Line Items]
Stated interest rate		8.00%
Notes Payable \| Tealstone
Debt Instrument [Line Items]
Gross long-term debt	$ 0			$ 0					$ 0	$ 12,230,000