SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of significant unobservable inputs of level 3 financial assets and liabilities (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total assets measured at fair value	$ 701,652	$ 873,186
Contingent consideration	31,046
Significant unobservable inputs (Level 3)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total assets measured at fair value	701,652	873,186
Total assets measured at fair value	1,070,117	1,250,735
Mandatorily redeemable noncontrolling interests issued after November 5, 2003	4,648	4,506
Contingent consideration	31,046
Total liabilities measured at fair value	$ 35,694	4,506
Significant unobservable inputs (Level 3) | Market interest rate
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent earnout, measurement input	0.085
Significant unobservable inputs (Level 3) | Weighted Average | Market interest rate
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent earnout, measurement input	0.085
Significant unobservable inputs (Level 3) | Market approach
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 304,172	291,178
Total assets measured at fair value	7,153
Mandatorily redeemable noncontrolling interests issued after November 5, 2003	$ 4,648	$ 4,506
Significant unobservable inputs (Level 3) | Market approach | Multiple of EBITDA
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	4.5
Significant unobservable inputs (Level 3) | Market approach | Operating income multiple
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mandatorily redeemable noncontrolling interesting, measurement input	6.0	6.0
Significant unobservable inputs (Level 3) | Market approach | Minimum | Multiple of EBITDA
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	1.50	3.25
Significant unobservable inputs (Level 3) | Market approach | Minimum | Multiple of PV-10
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input		0.60
Significant unobservable inputs (Level 3) | Market approach | Minimum | Multiple of Sales
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	3.0	1.45
Significant unobservable inputs (Level 3) | Market approach | Minimum | Market price of related security
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	10.01	0.84
Significant unobservable inputs (Level 3) | Market approach | Maximum | Multiple of EBITDA
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	10.50	17.50
Significant unobservable inputs (Level 3) | Market approach | Maximum | Multiple of PV-10
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input		0.65
Significant unobservable inputs (Level 3) | Market approach | Maximum | Multiple of Sales
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input		1.60
Significant unobservable inputs (Level 3) | Market approach | Maximum | Market price of related security
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	18.88	51.43
Significant unobservable inputs (Level 3) | Market approach | Weighted Average | Multiple of EBITDA
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	6.00	6.67
Significant unobservable inputs (Level 3) | Market approach | Weighted Average | Multiple of PV-10
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input		0.61
Significant unobservable inputs (Level 3) | Market approach | Weighted Average | Multiple of Sales
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	3.0	1.48
Significant unobservable inputs (Level 3) | Market approach | Weighted Average | Market price of related security
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	16.91	42.13
Significant unobservable inputs (Level 3) | Market approach | Weighted Average | Operating income multiple
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mandatorily redeemable noncontrolling interesting, measurement input		6.0
Significant unobservable inputs (Level 3) | Discounted cash flow
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 57,267	$ 74,157
Total assets measured at fair value	694,499	$ 873,186
Contingent consideration	$ 31,046
Significant unobservable inputs (Level 3) | Discounted cash flow | Market interest rate
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	0.238	0.148
Significant unobservable inputs (Level 3) | Discounted cash flow | EBITDA volatility
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent earnout, measurement input	0.800
Significant unobservable inputs (Level 3) | Discounted cash flow | Asset volatility
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent earnout, measurement input	0.690
Significant unobservable inputs (Level 3) | Discounted cash flow | Minimum | Market interest rate
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans receivable, measurement input	0.060	6.0
Significant unobservable inputs (Level 3) | Discounted cash flow | Maximum | Market interest rate
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans receivable, measurement input	0.835	38.0
Significant unobservable inputs (Level 3) | Discounted cash flow | Weighted Average | Market interest rate
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	0.238	0.148
Loans receivable, measurement input	0.239	0.263
Significant unobservable inputs (Level 3) | Discounted cash flow | Weighted Average | EBITDA volatility
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent earnout, measurement input	0.800
Significant unobservable inputs (Level 3) | Discounted cash flow | Weighted Average | Asset volatility
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent earnout, measurement input	0.690
Significant unobservable inputs (Level 3) | Option pricing model
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 7,026	$ 12,214
Significant unobservable inputs (Level 3) | Option pricing model | Minimum | Annualized volatility
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	0.003	0.300
Significant unobservable inputs (Level 3) | Option pricing model | Maximum | Annualized volatility
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	0.261	2.800
Significant unobservable inputs (Level 3) | Option pricing model | Weighted Average | Annualized volatility
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, measurement input	0.700	0.740