Net Income Per Common Share - Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Common Share (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]
Outstanding stock options and unvested restricted stock units excluded from computation of diluted EPS	1,300,000	78,000
Diluted weighted average shares	28,953,106	34,414,257
Interest and Debt Expense	$ 0.6	$ 0.6
Interest Expense [Member]
Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]
Diluted weighted average shares	3,900,000	3,900,000