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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Deferred tax assets: |  |
Accruals and reserves | $ 24,320 | $ 34,884
State net operating loss carryforwards | 12,689 | 10,777
Fair value of interest rate swaps |  | 1,406
Interest and state taxes associated with the liability for uncertain income tax positions | 1,126 | 1,746
Other | 712 | 774
Total deferred tax assets | 38,847 | 49,587
Deferred tax liabilities: |  |
Fair value of interest rate swaps | (696) |
Basis difference in inventories | (965) | (1,506)
Basis difference in property and equipment | (2,467) | (9,335)
Basis difference in goodwill | (73,803) | (101,999)
Other | (1,636) | (3,540)
Total deferred tax liabilities | (79,567) | (116,380)
Valuation allowance | (7,985) | (7,211)
Net deferred tax asset (liability) | $ (48,705) | $ (74,004)

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