ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair value measurements on recurring and nonrecurring valuation techniques (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
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%	9.50%
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%	11.50%
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%	0.50%
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%	0.40%