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LEASES - Narrative (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2022
CAD ($)
ft²
Jun. 30, 2022
USD ($)
ft²
Jun. 30, 2021
USD ($)
Dec. 31, 2021
CAD ($)
ft²
item
Dec. 31, 2021
USD ($)
ft²
item
Dec. 31, 2020
USD ($)
Lessee, Lease, Description [Line Items]                
Short term property leases             $ 262,000 $ 261,000
Operating lease cost, including related operating cost $ 83,000 $ 84,000   $ 165,000 $ 166,000   $ 327,000 $ 301,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Other assets   Other assets Other assets   Other assets Other assets  
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Other current liabilities   Other current liabilities Other current liabilities   Other current liabilities Other current liabilities Other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]           Other non-current liabilities Other non-current liabilities Other non-current liabilities
Canada                
Lessee, Lease, Description [Line Items]                
Office space (in square feet) | ft²     31,100 31,100   31,100 31,100  
Lease term 2 years   2 years 2 years   2 years 2 years  
Renewal option | item           1 1  
Renewal term           3 years 3 years  
Monthly rent     $ 18,100 $ 14,000   $ 18,100 $ 14,300  
Related operating expenses     $ 18,200 14,100   $ 18,200 $ 14,300  
Massachusetts And Pennsylvania | Minimum                
Lessee, Lease, Description [Line Items]                
Renewal term           3 months 3 months  
Massachusetts And Pennsylvania | Maximum                
Lessee, Lease, Description [Line Items]                
Renewal term           6 months 6 months  
Massachusetts                
Lessee, Lease, Description [Line Items]                
Monthly rent       2,200     $ 2,100  
Pennsylvania                
Lessee, Lease, Description [Line Items]                
Monthly rent       $ 21,000     $ 18,400