INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets
Net operating loss carryforward	$ 140,817	$ 117,968
Tax receivable agreement	48,727	48,481
Other	1,255	1,715
Valuation allowance	(16,468)	(18,160)
Total deferred tax assets	174,331	150,004
Deferred tax liabilities-investments in subsidiaries	(187,329)	(162,582)
Deferred tax liability, net	$ (12,998)	$ (12,578)