Net (Loss) Income per Share - Summary of Securities Not Included in Diluted Per Share Calculations (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities not included in the diluted per share calculations, amount	5,415,233	5,179,758	5,415,233	5,179,758
Options to Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities not included in the diluted per share calculations, amount	996,615	710,718	996,615	710,718
Warrants to Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities not included in the diluted per share calculations, amount	4,418,618	4,469,040	4,418,618	4,469,040