Debt Obligations - Other (Details)	6 Months Ended
	Jun. 30, 2022 USD ($) item	May 25, 2022 USD ($)	May 24, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Obligations
Financing and professional cost	$ 2,297,000
Revolving credit facility
Debt Obligations
Borrowing capacity		$ 850,000,000.0	$ 450,000,000
Outstanding borrowings	360,000,000.0
Letters of credit amount outstanding	55,600,000
Credit available	$ 434,400,000
Number of quarters of net earnings used for the calculation of the credit facility adjusted EBITDA | item	4
Principal financial covenants
Number of interest rate options | item	2
Number of quarters of Adjusted EBITDA and interest expense used for calculation of fixed charge coverage ratio | item	4
Other disclosures
Range of stated interest rates (as a percent)	2.80%
Revolving credit facility | Net Leverage Ratio, Less Than or Equal To 3.25
Principal financial covenants
Net leverage ratio used as basis for other restrictions	3.25
Revolving credit facility | Net Leverage Ratio, Less Than or Equal To 2.75
Principal financial covenants
Net leverage ratio used as basis for other restrictions	2.75
Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: Less than 1.00
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Letter of credit fees (as a percent)	1.00%
Commitment fees payable on unused portion of the facility (as a percent)	0.15%
Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 1.00 to 1.75
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Letter of credit fees (as a percent)	1.25%
Commitment fees payable on unused portion of the facility (as a percent)	0.175%
Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 1.75 to 2.50
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Letter of credit fees (as a percent)	1.50%
Commitment fees payable on unused portion of the facility (as a percent)	0.20%
Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 2.50 to 3.00
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Letter of credit fees (as a percent)	1.75%
Commitment fees payable on unused portion of the facility (as a percent)	0.225%
Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 3.00 or Greater
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Letter of credit fees (as a percent)	2.00%
Commitment fees payable on unused portion of the facility (as a percent)	0.25%
Revolving credit facility | Minimum
Principal financial covenants
Interest coverage ratio	3.00
Revolving credit facility | Maximum
Principal financial covenants
Maximum cash adjustment allowed in net leverage ratio calculation	$ 100,000,000
Leverage ratio	3.50
Revolving credit facility | Base rate | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: Less than 1.00
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	0.00%
Revolving credit facility | Base rate | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 1.00 to 1.75
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	0.25%
Revolving credit facility | Base rate | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 1.75 to 2.50
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	0.50%
Revolving credit facility | Base rate | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 2.50 to 3.00
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	0.75%
Revolving credit facility | Base rate | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 3.00 or Greater
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	1.00%
Amended senior revolving credit facility
Debt Obligations
Borrowing capacity		850,000,000	562,500,000
Financing and professional cost	$ 2,300,000
Unamortized costs			$ 1,200,000
Amended senior revolving credit facility | Maximum
Debt Obligations
Line of credit borrowing capacity accordion option		$ 250,000,000
Notes to Former Owners
Other disclosures
Cumulative number of companies acquired | item	9
Outstanding balance	$ 45,400,000			$ 47,954,000
Letter of Credit
Debt Obligations
Borrowing capacity	$ 175,000,000.0
Federal Funds Rate | Revolving credit facility | Base rate
Market rates relating to interest options
Market rate (as a percent)	2.08%
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	0.50%
SOFR | Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: Less than 1.00
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	1.00%
SOFR | Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 1.00 to 1.75
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	1.25%
SOFR | Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 1.75 to 2.50
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	1.50%
SOFR | Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 2.50 to 3.00
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	1.75%
SOFR | Revolving credit facility | Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 3.00 or Greater
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	2.00%
SOFR | Revolving credit facility | Base rate
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	1.00%
Wells Fargo Bank, N.A. Prime Rate | Revolving credit facility | Base rate
Market rates relating to interest options
Market rate (as a percent)	4.75%
One-month SOFR | Revolving credit facility
Market rates relating to interest options
Market rate (as a percent)	1.09%
One-month SOFR | Revolving credit facility | Base rate
Market rates relating to interest options
Market rate (as a percent)	2.09%
Debt Instrument, Interest Rate, Effective Percentage [Abstract]
Additional per annum interest margin (as a percent)	1.00%
Six-month SOFR | Revolving credit facility
Market rates relating to interest options
Market rate (as a percent)	0.39%