Annual report pursuant to Section 13 and 15(d)

Leases - Narrative (Details)

v3.20.4
Leases - Narrative (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
ft²
extension_option
Oct. 31, 2020
USD ($)
ft²
Dec. 31, 2020
USD ($)
ft²
extension_option
Dec. 31, 2020
USD ($)
ft²
extension_option
Dec. 31, 2019
USD ($)
Aug. 31, 2020
USD ($)
ft²
Mar. 31, 2020
USD ($)
Mar. 12, 2020
Lessee, Lease, Description [Line Items]                
Remaining lease term 11 years   11 years 11 years        
Number of extension options | extension_option 2   2 2        
Lease extension term 5 years   5 years 5 years        
Lease termination option term       7 years        
Total lease costs       $ 944,000 $ 297,000      
Amount of leases not yet commenced $ 94,000,000   $ 94,000,000 $ 94,000,000        
Incremental borrowing rate 5.20%   5.20% 5.20%        
Right of use asset $ 5,489,000   $ 5,489,000 $ 5,489,000 0      
Total lease liabilities 8,407,000   8,407,000 8,407,000 $ 0      
Minimum lease payments $ 11,283,000   $ 11,283,000 $ 11,283,000        
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] us-gaap:AssetsAbstract   us-gaap:AssetsAbstract us-gaap:AssetsAbstract        
Edmonton, Alberta                
Lessee, Lease, Description [Line Items]                
Area of property (in sqft) | ft² 2,248   2,248 2,248        
Monthly payments     $ 2,200          
Rockville, Maryland                
Lessee, Lease, Description [Line Items]                
Incremental borrowing rate               5.20%
Area of property (in sqft) | ft² 30,531   30,531 30,531        
Right of use asset             $ 5,800,000  
Total lease liabilities             $ 5,800,000  
Proceeds from tenant improvements $ 2,300,000              
Victoria, British Columbia                
Lessee, Lease, Description [Line Items]                
Area of property (in sqft) | ft²   13,206       18,615    
Monthly payments   $ 19,000            
Minimum lease payments           $ 3,100,000