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ACQUISITIONS - Narrative (Details) $ in Thousands		12 Months Ended
ACQUISITIONS - Narrative (Details) $ in Thousands	Apr. 01, 2023 USD ($)	Dec. 31, 2023 USD ($) business	Dec. 31, 2022 USD ($) business	Dec. 31, 2021 USD ($)	Apr. 03, 2023 USD ($)
Business Acquisition [Line Items]
Long-term line of credit					$ 305,000
Number of businesses acquired \| business		23	31
Total cash purchase price		$ 366,854	$ 119,188	$ 146,098
Customer contracts, net
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		7 years
FPC Holdings, LLC
Business Acquisition [Line Items]
Percentage of voting interests acquired	100.00%
Contributed revenues	$ 117,800
Net earnings	1,600
Assets acquired and liabilities assumed	339,514	$ 339,500
Contingent consideration transferred	$ 302,800
Earnout liabilities		28,000
Contingent consideration		8,700
Adjustments fair value contingent consideration		3,100
2023 Acquisitions
Business Acquisition [Line Items]
Assets acquired and liabilities assumed		76,708
Contingent consideration		$ 7,800
2022 Acquisitions
Business Acquisition [Line Items]
Assets acquired and liabilities assumed			126,226
Contingent consideration			10,200
2021 Acquisitions
Business Acquisition [Line Items]
Total cash purchase price			$ 3,100