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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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