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Income Taxes - Components of Net Deferred Tax Asset or Liability (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Deferred Tax Assets    
Accrued liabilities and allowances $ 9,106 $ 5,140
Allowance for doubtful accounts 987 514
Inventories 402 437
Property and equipment 280 303
Intangibles 6,582 5,615
Net operating loss carryforwards 1,206 1,240
Other 16 5
Long-term deferred tax assets 18,579 13,254
Less: Valuation allowance (1,263) (1,512)
Net deferred tax assets 17,316 11,742
Deferred Tax Liabilities    
Accrued liabilities and allowances (151) (252)
Property and equipment (4,587) (4,176)
Intangibles (4,810) (4,307)
Investment in partnership (6,660) (11,857)
Other (650) (325)
Long-term deferred tax liabilities (16,858) (20,917)
Net deferred tax assets (liabilities) $ 458  
Net deferred tax assets (liabilities)   $ (9,175)