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INCOME TAXES (Additional Information) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Difference in income tax provision from amount computed by applying U.S. federal income tax rate to loss before income taxes
U.S. federal income tax provision (benefit) at statutory rate									$ 25,833,000	$ 20,263,000	$ (12,988,000)
State income tax expense, net of federal benefit									5,734,000	3,224,000	(2,373,000)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Executive Compensation, Amount									1,908,000	147,000	0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount									110,000	(165,000)	399,000
Effective Income Tax Rate Reconciliation, Gain on Subsidiary Stock, Amount									0	360,000	(855,000)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount									0	(1,022,000)	0
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount									(1,419,000)	(1,266,000)	(1,677,000)
Stock based compensation expense									(3,851,000)	1,839,000	976,000
Change in valuation allowance									(77,090,000)	(22,017,000)	17,578,000
Total provision (benefit) for income taxes	$ (1,447,000)	$ (1,795,000)	$ (45,726,000)	$ 193,000	$ (393,000)	$ 753,000	$ 840,000	$ 163,000	(48,775,000)	1,363,000	1,060,000
Deferred tax assets:
Net operating loss carryforwards	35,247,000				88,990,000				35,247,000	88,990,000
Deferred Tax Assets, Tax Credit Carryforwards, Research	19,551,000				20,067,000				19,551,000	20,067,000
Deferred Tax Assets, Equity Method Investments	6,092,000				8,079,000				6,092,000	8,079,000
Accrued expenses	5,750,000				7,168,000				5,750,000	7,168,000
Deferred Tax Assets, Deferred Income	5,431,000				4,747,000				5,431,000	4,747,000
Operating lease liabilities	3,128,000				6,604,000				3,128,000	6,604,000
Deferred Tax Assets Tax Deferred Expense Reserves and Accruals Reserves and Other	2,835,000				3,877,000				2,835,000	3,877,000
Deferred Tax Assets, Other Tax Credit Carryforwards	207,000				253,000				207,000	253,000
Deferred Tax Assets, Goodwill and Intangible Assets	135,000				2,897,000				135,000	2,897,000
Deferred Tax Asset, Interest Carryforward	0				1,799,000				0	1,799,000
Gross deferred tax assets	78,376,000				144,481,000				78,376,000	144,481,000
Valuation allowance	(11,384,000)				(134,305,000)				(11,384,000)	(134,305,000)
Total deferred tax assets	66,992,000				10,176,000				66,992,000	10,176,000
Deferred tax liabilities:
Basis difference in equity securities	(20,831,000)				(218,000)				(20,831,000)	(218,000)
Deferred Tax Liabilities, Leasing Arrangements	3,077,000				6,152,000				3,077,000	6,152,000
Deferred Tax Liabilities, Property, Plant and Equipment	2,264,000				2,236,000				2,264,000	2,236,000
Prepaid expenses	(785,000)				(777,000)				(785,000)	(777,000)
Deferred Tax Liabilities, Goodwill	0				934,000				0	934,000
Total deferred tax liabilities	(26,957,000)				(10,317,000)				(26,957,000)	(10,317,000)
Deferred Tax Liabilities, Net					(141,000)					(141,000)
Total deferred tax assets (liabilities), net	40,035,000								40,035,000
Unrecognized tax benefits that would impact effective tax rate	12,000,000				9,600,000				12,000,000	9,600,000	$ 9,100,000
Interest and penalties accrued on tax contingencies	753,000				340,000				753,000	340,000
Indefinitely reinvested foreign earnings	5,700,000								5,700,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount									53,800,000
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities					178,000					178,000
Disposal Group, Including Discontinued Operation, Deferred Tax Assets					37,000					37,000
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities					$ 178,000					$ 178,000
Federal
Deferred tax liabilities:
Net operating loss carryforwards	135,200,000								135,200,000
Internal Revenue Service (IRS)
Deferred tax assets:
Deferred Tax Assets, Tax Credit Carryforwards, Research	21,400,000								21,400,000
State and local jurisdictions
Deferred tax assets:
Deferred Tax Assets, Tax Credit Carryforwards, Research	9,000,000								9,000,000
Deferred tax liabilities:
Net operating loss carryforwards	37,400,000								37,400,000
State and local jurisdictions | Tax Year 2022
Deferred tax liabilities:
Net operating loss carryforwards	16,200,000								16,200,000
State and local jurisdictions | Tax Year 2026 - 2039
Deferred tax liabilities:
Net operating loss carryforwards	$ 89,200,000								$ 89,200,000

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