XML 88 R72.htm IDEA: XBRL DOCUMENT v3.20.4
Equity (Common Stock Dividends) (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Class of Stock [Line Items]      
Common stock dividends declared   $ 21,302,000 $ 20,695,000
Claw back of dividends on cancelled Performance Stock Units $ (202,000)    
Common Stock      
Class of Stock [Line Items]      
Common stock dividends declared 0 21,302,000 20,695,000
Performance Shares      
Class of Stock [Line Items]      
Claw back of dividends on cancelled Performance Stock Units $ (202,000) $ 0 $ 0