BUSINESS ACQUISITIONS - Narrative (Details)							6 Months Ended	8 Months Ended	10 Months Ended	12 Months Ended
	Sep. 01, 2022 USD ($) rate	May 02, 2022 USD ($)	Mar. 01, 2022 USD ($)	Sep. 20, 2021 USD ($)	Jul. 01, 2021 USD ($)	Apr. 30, 2021 USD ($)	Sep. 01, 2022 USD ($) rate	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) shares	Dec. 31, 2022 USD ($) entity	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Goodwill								$ 333,759,000	$ 333,759,000	$ 333,759,000	$ 296,541,000	$ 249,751,000
Acquired intangibles										19,430,000	16,259,000
Acquisition related costs										600,000
Measurement period adjustments to decrease goodwill										(4,000,000)
Higher range of undiscounted amounts to pay under contingent consideration										$ 10,300,000
Non-compete agreements
Business Acquisition [Line Items]
Amortization term of acquired intangibles										3 years 7 months 6 days
Customer relationships
Business Acquisition [Line Items]
Amortization term of acquired intangibles										6 years 1 month 6 days
Total
Business Acquisition [Line Items]
Cash and stock paid for acquisition									67,900,000
Fair value of stock issued									5,800,000
Contingent consideration									8,200,000
Goodwill								38,838,000	38,838,000	$ 38,838,000
Acquired intangibles									$ 19,400,000
Number of completed acquisitions | entity										4
Lower range of undiscounted amounts to pay under contingent consideration							$ 0
Higher range of undiscounted amounts to pay under contingent consideration							$ 10,300,000
Total | Minimum
Business Acquisition [Line Items]
Achievement of annual EBITDA target period							1 year
Total | Maximum
Business Acquisition [Line Items]
Achievement of annual EBITDA target period							3 years
Total | Common Stock
Business Acquisition [Line Items]
Number of shares issued in acquisitions (in shares) | shares									267,248
Total | Fair Value, Inputs, Level 3 | Contingent Consideration Liability | Valuation, Weighted Probability Of Possible Payments
Business Acquisition [Line Items]
Fair value of contingent consideration liability	$ 8,200,000						$ 8,200,000
Discount rate | rate	0.078						0.078
Total | Non-compete agreements
Business Acquisition [Line Items]
Acquired intangibles									$ 1,400,000
Amortization term of acquired intangibles									5 years
Total | Customer relationships
Business Acquisition [Line Items]
Acquired intangibles									$ 18,000,000
Amortization term of acquired intangibles									8 years
Sullivan
Business Acquisition [Line Items]
Cash and stock paid for acquisition	$ 6,500,000
Cash on hand	4,600,000
Fair value of stock issued	900,000
Contingent consideration	$ 1,000,000
Sales contributed since acquisition										$ 1,000,000
Net income (loss) contributed since acquisition										275,000
Goodwill								2,500,000	$ 2,500,000	2,500,000
Cisco
Business Acquisition [Line Items]
Cash and stock paid for acquisition		$ 52,300,000
Cash on hand		43,400,000
Fair value of stock issued		4,400,000
Contingent consideration		4,500,000
Sales contributed since acquisition										32,100,000
Net income (loss) contributed since acquisition										6,500,000
Goodwill		$ 34,465,000						30,494,000	30,494,000	30,494,000
Measurement period adjustments to decrease goodwill								(3,971,000)
Drydon
Business Acquisition [Line Items]
Cash and stock paid for acquisition			$ 7,900,000
Cash on hand			4,900,000
Fair value of stock issued			441,000
Contingent consideration			2,600,000
Sales contributed since acquisition										5,600,000
Net income (loss) contributed since acquisition										1,100,000
Goodwill								5,300,000	5,300,000	5,300,000
Burlingame
Business Acquisition [Line Items]
Cash and stock paid for acquisition			$ 1,100,000
Sales contributed since acquisition										2,900,000
Net income (loss) contributed since acquisition										604,000
Goodwill								$ 500,000	$ 500,000	$ 500,000
CVI
Business Acquisition [Line Items]
Cash and stock paid for acquisition						$ 49,700,000
Goodwill											38,300,000
PMI
Business Acquisition [Line Items]
Cash and stock paid for acquisition					$ 9,600,000
Goodwill											5,300,000
Premier
Business Acquisition [Line Items]
Cash and stock paid for acquisition				$ 5,800,000
Goodwill											$ 1,400,000