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Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets: |  |
Net operating losses and tax credit carryforwards – federal and state | $ 7,682 | $ 9,913
Bad debt allowance | 1,243 | 996
Accrued compensation and severance | 20,889 | 14,241
Insurance reserves | 18,497 | 16,485
Leases | 846 | 800
Accrued expenses | 11,817 | 1,020
Interest carryforwards | 3,374 | 40,792
Lease right-of-use liabilities | 24,402 | 26,375
Fixed asset basis difference |  | 14,714
Basis in foreign subsidiary | 239,073 |
Other assets | 13,251 | 2,777
Total gross deferred tax assets | 341,074 | 128,113
Less: valuation allowance | (241,225) | (6,859)
Deferred tax assets | 99,849 | 121,254
Deferred tax liabilities: |  |
Fixed asset basis difference | (5,553) |
Prepaid items | (2,960) | (2,163)
Intangible assets | (115,196) | (100,881)
Lease right-of-use assets | (22,948) | (24,898)
Other liabilities |  | (12,793)
Total deferred tax liabilities | (146,657) | (140,735)
Total net deferred tax liability | $ (46,808) | $ (19,481)

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