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Significant Components of Net Deferred Tax Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Components of Net Deferred Tax Liabilities [Line Items] |  |  |
Share-based compensation |  | $ 30,854 | $ 27,223
Capitalized inventory costs and inventory adjustments |  | 3,449 | 3,189
Allowance for doubtful accounts |  | 1,328 | 949
Self-insurance reserves |  | 1,027 | 518
Other |  | 6,081 | 5,090
Net operating loss carryforwards |  | 3,959 | 2,930
Total deferred tax assets, gross |  | 46,698 | 39,899
Valuation allowance |  | (5,107) | (668)
Total deferred tax assets |  | 41,591 | 39,231
Deductible goodwill |  | (82,704) | (78,288)
Depreciation |  | (18,744) | (16,441)
Other |  | (8,794) | (7,050)
Total deferred tax liabilities |  | (110,242) | (101,779)
Net deferred tax liabilities | [1] | $ (68,651) | $ (62,548)
[1] | Net deferred tax liabilities have been included in the consolidated balance sheets in deferred income taxes and other liabilities.

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