Annual report pursuant to Section 13 and 15(d)

Compensation and Other Benefit Plans - Deferred Savings Plan (Details)

v3.20.4
Compensation and Other Benefit Plans - Deferred Savings Plan (Details) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Deferred Savings Plan    
Maximum annual contribution per employee (as a percent) 50.00% 50.00%
Age requirement for participant to be eligible for a catch-up contribution, minimum 50 years 50 years
Contribution expense $ 100,000 $ 100,000
Deferred savings plan expense paid in common shares (as a percent) 100.00% 100.00%
Maximum    
Deferred Savings Plan    
Employer matching contribution (as a percent) 50.00%  
Employee, Under Age Fifty    
Deferred Savings Plan    
Maximum annual contribution per employee $ 19,500 $ 19,000
Employee, Age Fifty or Over    
Deferred Savings Plan    
Maximum annual contribution per employee $ 26,000 $ 25,000