Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Additional Information (Details)

v3.20.1
Subsequent Events - Additional Information (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jan. 01, 2020
Dec. 31, 2019
Dec. 31, 2018
2014 Equity Incentive Plan      
Subsequent Event [Line Items]      
Share-based compensation arrangement by share-based payment award, number of additional shares authorized   1,918,879 1,158,866
2014 Employee Stock Purchase Plan      
Subsequent Event [Line Items]      
Share-based compensation arrangement by share-based payment award, number of additional shares authorized   29,411 29,411
Subsequent Event | New Jersey      
Subsequent Event [Line Items]      
Proceeds from sale of net operating loss and research and development tax credit carryforwards $ 3.1    
Subsequent Event | 2014 Equity Incentive Plan      
Subsequent Event [Line Items]      
Share-based compensation arrangement by share-based payment award, number of additional shares authorized 3,896,548    
Subsequent Event | 2014 Employee Stock Purchase Plan      
Subsequent Event [Line Items]      
Share-based compensation arrangement by share-based payment award, number of additional shares authorized 29,411