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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets:      
Allowance for doubtful accounts $ 126 $ 112  
Accrued vacation and bonuses 342 419  
Stock-based compensation expense 1,692 1,274  
COVID-19 payroll tax deferment 0 628  
Acquisition-related transaction costs 509 540  
Net operating losses 559 311  
Total deferred tax assets 3,228 3,284  
Deferred tax liabilities:      
Prepaid expenses 441 233  
Depreciation, intangibles and contingent consideration 3,148 3,005  
Total deferred tax liabilities 3,589 3,238  
Valuation allowance (559) (311) $ (179)
Net deferred tax liability $ (920) $ (265)