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Income Taxes - Tax Effects of Temporary Differences That Rises to Significant Portions of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Income Tax Disclosure [Abstract] |  |
Net operating loss carryforwards | $ 1,091 | $ 1,229
Allowance for doubtful accounts | 2,902 | 3,022
Employee benefits and compensation | 24,761 | 21,155
Lease costs | 4,099 | 3,611
State tax credit carryforwards | 1,353 | 1,385
Property and equipment |  | 528
Other deferred tax assets | 287 | 633
Total gross deferred tax assets | 34,493 | 31,563
Less: valuation allowance | (1,840) | (1,657)
Total deferred tax assets, net | 32,653 | 29,906
Accrued interest |  | 819
Client list intangible assets | 1,184 | 1,513
Goodwill and other intangibles | 35,840 | 30,913
Property and equipment | 1,356 |
Other deferred tax liabilities | 1,037 |
Total gross deferred tax liabilities | 39,417 | 33,245
Net deferred tax liability | $ (6,764) | $ (3,339)

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