ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair value measurements on recurring and nonrecurring valuation techniques (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Measurement Input, Discount Rate [Member] | Employment Agreement Award [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions Measurement Rate	9.50%	10.50%
Measurement Input, Discount Rate [Member] | Redeemable Noncontrolling Interest [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions Measurement Rate	11.50%	11.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Employment Agreement Award [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions Measurement Rate	0.50%	1.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Redeemable Noncontrolling Interest [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions Measurement Rate	0.40%	1.00%
Contingent Consideration [Member] | Measurement Input, Expected volatility [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions Measurement Rate		29.50%
Contingent Consideration [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions Measurement Rate		16.50%