INCOME TAXES - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Income tax benefit	$ 0	$ 0
Research and development expense, capitalized	49,991,000
Increase in valuation allowance	24,482,000
Unrecognized tax benefits	0	0
Accrued interest and penalties related to uncertain tax positions	0	$ 0
Undistributed earnings of foreign subsidiaries	0
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	241,019,000
Federal | Tax Year 2036
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	2,556,000
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	158,917,000
Canada
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	471,000
Research and development | Federal
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	$ 7,566,000