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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)