Quarterly report pursuant to Section 13 or 15(d)

Stock Option and Incentive Plans - Additional Information (Detail)

v3.22.1
Stock Option and Incentive Plans - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Dec. 31, 2021
Dec. 31, 2015
Mar. 31, 2022
Mar. 31, 2021
Jul. 28, 2014
Apr. 29, 2014
Feb. 24, 2014
Feb. 26, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares of common stock reserved pursuant to the plan 14,903,919   16,475,800          
Weighted average grant date fair value of options     $ 3.33 $ 5.58        
Unrecognized compensation cost related to unvested stock options     $ 7.1          
Weighted average period of unvested stock options     2 years 8 months 12 days          
Employee Stock Options [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Compensation expense recognized     $ 0.9 $ 0.6        
Amended and Restated 2008 Equity Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares of common stock reserved pursuant to the plan               157,143
Termination of service, Period     2 years          
2008 Equity Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares of common stock reserved pursuant to the plan           235,714 185,714  
Termination of service, Period     10 years          
2014 Omnibus Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares of common stock reserved pursuant to the plan         57,143      
Number of additional shares increases of common stock reserved pursuant to the plan 4,268,682              
2014 Omnibus Incentive Plan [Member] | Maximum [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Annual increase of plan, percentage of common stock shares outstanding   4.00%