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Shareholders' Equity (Narrative) (Details) - $ / shares
Jun. 02, 2020
Jun. 30, 2020
Dec. 31, 2019
Shareholders' Equity [Line Items]      
Dividends payable, amount per share $ 0.04    
Dividends payable, date declared Jun. 02, 2020    
Dividends payable, date of record Aug. 14, 2020    
Dividends payable, date of payment Sep. 04, 2020    
Series A      
Shareholders' Equity [Line Items]      
Common stock, shares, outstanding   18,941,340 18,941,115
Series B      
Shareholders' Equity [Line Items]      
Common stock, shares, outstanding   2,469,083 2,469,308