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INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred tax assets: |  |
Accrued expenses and other liabilities | $ 45,532 | $ 54,699
Operating lease obligation | 10,890 | 16,279
Stock-based compensation | 4,014 | 5,129
Net operating loss and tax credit carryforwards | 140,787 | 142,835
Intangible assets, net | 20,357 | 22,974
Investments | 20,581 | 24,885
Convertible senior notes | 5,929 | 0
Unrealized foreign currency exchange losses | 1,078 | 1,244
Other | 244 | 985
Total deferred tax assets | 249,412 | 269,030
Less: Valuation allowance | (145,105) | (212,143)
Deferred tax assets, net of valuation allowance | 104,307 | 56,887
Deferred tax liabilities: |  |
Prepaid expenses and other assets | (14,605) | (12,288)
Property, equipment and software, net | (9,511) | (8,211)
Right-of-use asset | (7,293) | (11,433)
Convertible senior notes | 0 | (1,163)
Deferred revenue | (12,755) | (15,369)
Total deferred tax liabilities | (44,164) | (48,464)
Net deferred tax asset (liability) | $ 60,143 | $ 8,423

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