Annual report pursuant to Section 13 and 15(d)

Leases - Additional Information (Details)

v3.20.4
Leases - Additional Information (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
Lease
Dec. 31, 2019
USD ($)
Jan. 01, 2019
USD ($)
Operating Leased Assets [Line Items]      
Operating lease right-of-use-assets $ 2,484 $ 2,835  
Operating lease, liability $ 2,620    
Number of leases | Lease 2    
Operating lease, discount rate 7.00%    
Operating lease, weighted average remaining lease term 7 years    
Operating lease expense $ 500 500  
Operating lease , cash payment 500 500  
Operating lease right-of-use-assets amortization $ 400 $ 300  
Office Building [Member]      
Operating Leased Assets [Line Items]      
Lease expiration period 2027    
Manufacturing Facility [Member]      
Operating Leased Assets [Line Items]      
Lease expiration period 2021    
ASU 2016-02 [Member]      
Operating Leased Assets [Line Items]      
Operating lease right-of-use-assets     $ 3,200
Operating lease, liability     $ 3,200