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