Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Narrative (Details)

v3.20.4
Subsequent Events - Narrative (Details)
$ in Millions
2 Months Ended
Mar. 01, 2021
USD ($)
ft²
Dec. 31, 2020
ft²
Subsequent Event [Line Items]    
Area of real estate property (in square feet) | ft²   77,300
Subsequent Event | San Carlos, California    
Subsequent Event [Line Items]    
Area of real estate property (in square feet) | ft² 36,593  
Payments for (proceeds from) tenant allowance $ 6.3  
Base rent $ 2.5  
Annual rent increase, percent 3.00%  
Lease term 10 years  
Lease renewal term 5 years  
Security deposit $ 0.4  
Subsequent Event | San Carlos, California | Maximum    
Subsequent Event [Line Items]    
Additional allowance $ 2.7