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INCOME TAXES - Net deferred tax assets (liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred tax assets: |  |
Deferred revenue | $ 2,981 | $ 3,788
State operating loss carry forwards | 2,831 | 3,894
Federal and foreign loss carry forwards | 11,318 | 21,617
Accrued expenses | 2,450 | 2,023
Accrued variable compensation |  | 3,110
Deferred and stock-based compensation | 23,634 | 24,971
Operating lease liabilities | 6,272 | 7,204
Tax credits |  | 532
Other |  | 53
Deferred tax assets | 49,486 | 67,192
Valuation allowance | (2,285) | (1,839)
Total deferred tax assets | 47,201 | 65,353
Deferred tax liabilities: |  |
Depreciation and amortization | (9,337) | (26,269)
Prepaid expenses | (1,256) | (1,329)
Right of use asset | (4,325) | (5,120)
Accrued variable compensation | (1,646) |
Other | (115) |
Deferred tax liabilities | (16,679) | (32,718)
Classification in the consolidated balance sheets |  |
Deferred income tax asset | 30,938 | 35,298
Net deferred tax asset | 30,522 | 32,635
Deferred income tax asset |  |
Classification in the consolidated balance sheets |  |
Deferred income tax asset | 30,938 | 35,298
Deferred other liabilities |  |
Classification in the consolidated balance sheets |  |
Deferred other liabilities | $ (416) | $ (2,663)

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