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INCOME TAXES - Differences Between Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Tax Disclosure [Abstract] |  |  |
U.S. federal income tax provision (benefit) at statutory rate | $ (40,314) | $ 18,485 | $ (61,805)
Foreign income and losses taxed at different rates | 9,035 | 5,000 | 8,608
State income taxes, net of federal benefits, and state tax credits | 4,133 | 4,897 | 6,487
Change in valuation allowances | 64,328 | (50,695) | (4,474)
Effect of income tax rate changes on deferred items | 443 | 815 | 618
Adjustments related to uncertain tax positions | (13,062) | 2,588 | (15,518)
Non-deductible stock-based compensation expense | 2,191 | 2,727 | 3,803
Tax (windfalls)/shortfalls on stock-based compensation awards | 2,741 | (1,762) | 3,876
Federal research and development credits, net of adjustments | (812) | (396) | 6,043
Forgiveness of intercompany liabilities | 1,468 | (62) | (2,863)
Tax attribute expiration | 5,519 | 0 | 19,962
Goodwill impairment | 7,213 | 0 | 23,202
Observable price change on an other equity investment | 0 | (17,955) | 0
Non-deductible or non-taxable items | (473) | 4,035 | 4,557
Provision (benefit) for income taxes | $ 42,410 | $ (32,323) | $ (7,504)

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