Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Basis of Preparation - Additional Information (Detail)

v3.21.2
Description of Business and Basis of Preparation - Additional Information (Detail)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 16, 2020
shares
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
shares
Jul. 17, 2020
shares
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]              
Accumulated deficit   $ (329,631)   $ (329,631)   $ (326,613)  
Cash and cash equivalents   $ 112,445   $ 112,445   $ 93,041  
Reverse stock split, ratio 0.1            
Common stock, shares authorized (in shares) | shares 250,000,000 100,000,000   100,000,000   100,000,000 100,000,000
Income tax benefit   $ 4,138 $ 3,144 $ 3,038 $ 3,144    
New Jersey              
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]              
Income tax benefit   $ 4,100   $ 4,100