Stock Incentive Plans and Stock Purchase Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, aggregate shares authorized	200,000,000	200,000,000
Stock-based compensation expense	$ 11.7	$ 9.9	$ 12.3
Aggregate fair value of restricted and deferred stocks vested	$ 9.7	$ 17.1	$ 9.6
Weighted average grant-date fair value of restricted and deferred stock awards granted	$ 13.94	$ 7.57	$ 15.25
Unrecognized compensation expense related to non-vested restricted stock, weighted-average period in years	1 year 9 months 18 days
Unrecognized compensation expense related to non-vested restricted shares	$ 18.0
Restructuring Charges [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 6.3	$ 2.0
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Common stock issued under employee stock purchase plan Shares	300,000
Employee Stock Option | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of options, maximum years	10 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	1,111,599
Weighted average grant-date fair value of restricted and deferred stock awards granted	$ 13.94
1996 Non-Qualified Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, reserved for issuance	1,300,000
2015 Non-Qualified Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of market value of common stock at which employees are permitted to purchase	90.00%
Common stock issued under employee stock purchase plan Shares	0
Amended and Restated 2008 Plan [Member] | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants and awards under Stock Incentive Plans	1,400,000
Amended and Restated 2008 Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	1,100,000
Amended and Restated 2008 Plan [Member] | Market Based Restricted Stock Units (PRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	1,000,000
1996 Non-Qualified Employee Stock Purchase Plan and 2015 Non-Qualified Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of market value of common stock at which employees are permitted to purchase	85.00%
1996 Non-Qualified Employee Stock Purchase Plan and 2015 Non-Qualified Stock Purchase Plan [Member] | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, reserved for issuance	61,000