INCOME TAXES - Narrative (Detail)	12 Months Ended
	Dec. 31, 2020 USD ($)
Federal
Income Taxes [Line Items]
Net operating loss carryforwards	$ 21,700,000
Tax credit carryforwards	6,400,000
State and local
Income Taxes [Line Items]
Net operating loss carryforwards	53,000,000.0
Tax credit carryforwards	2,600,000
Foreign tax authority
Income Taxes [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	2,200,000
Foreign tax authority | Canada | Research and development
Income Taxes [Line Items]
Tax credit carryforwards	$ 1,700,000