Quarterly report pursuant to Section 13 or 15(d)

LEASES - Narrative (Details)

v3.21.1
LEASES - Narrative (Details)
$ in Thousands
3 Months Ended
May 01, 2020
USD ($)
lease
Mar. 31, 2021
USD ($)
lease
renewal_option
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Lessee, Lease, Description [Line Items]        
Number of operating leases | lease   2    
Number of non-cancelable leases | lease   2    
Operating lease right-of-use assets $ 115 $ 1,857   $ 2,012
Operating lease, liability   2,123    
Restricted cash   $ 105   $ 105
Number of lease renewal options recognized | renewal_option   0    
Finance lease, liability   $ 204    
Operating lease, cost   286 $ 283  
Cash paid for operating lease liabilities   192 180  
Finance lease right-of-use asset amortization   10 0  
Lease Amendment        
Lessee, Lease, Description [Line Items]        
Operating lease renewal periods 3 months      
Number of leases amended | lease 1      
Base rent deferral period 3 months      
Operating expense deferral period 3 months      
Operating lease, liability $ 115      
Lab Equipment Lease        
Lessee, Lease, Description [Line Items]        
Finance lease term       60 months
Finance lease interest rate       5.99%
Finance lease, right-of-use asset       $ 204
Finance lease, liability       $ 204
Research and development        
Lessee, Lease, Description [Line Items]        
Operating lease, cost   193 209  
Finance lease right-of-use asset amortization   10 0  
Sales, marketing and administration expenses        
Lessee, Lease, Description [Line Items]        
Operating lease, cost   93 $ 74  
Letter of Credit | Corporate Headquarters        
Lessee, Lease, Description [Line Items]        
Security deposit   50    
Operating lease, deposit letter of credit $ 200 105    
Letter of credit annual step down of no default payment   $ 50    
Minimum | Facilities        
Lessee, Lease, Description [Line Items]        
Operating lease renewal periods   2 years    
Maximum | Facilities        
Lessee, Lease, Description [Line Items]        
Operating lease renewal periods   5 years    
Maximum | Facilities and Equipment        
Lessee, Lease, Description [Line Items]        
Operating lease term   12 months