WARRANTS - Schedule of Key Terms of Placement Warrants (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants exercised (in shares)	0	113,161
Warrants outstanding (in shares)	2,036,733
2017 Placement Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Term	7 years
Exercise price per share (in USD per share)	$ 3.17
Warrants exercised (in shares)	0
Warrants outstanding (in shares)	1,500,022
2016 Placement Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Term	7 years
Exercise price per share (in USD per share)	$ 2.95
Warrants exercised (in shares)	0
Warrants outstanding (in shares)	536,711