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Net Income per Share - Schedule of Potentially Dilutive Weighted Average Shares Excluded from Calculation of Diluted Net Income per Share (Detail) - shares
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Stock Options [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount 121,381 1,059,230
Restricted Stock Units [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount 21,869