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Shareholders' Equity (Narrative) (Details) - $ / shares	Jul. 20, 2020	Jun. 30, 2020	Dec. 31, 2019
Class Of Stock [Line Items]
Preferred stock, shares authorized		12,500,000
Series B [Member]
Class Of Stock [Line Items]
Preferred stock, shares authorized		1,450,000	1,450,000
Series C [Member]
Class Of Stock [Line Items]
Preferred stock, shares authorized		6,450,000	6,450,000
Subsequent Event [Member]
Class Of Stock [Line Items]
Dividends payable, date declared	Jul. 20, 2020
Common stock, dividends declared	$ 0.01
Dividends payable, date to be paid	Aug. 20, 2020
Dividends payable, date of record	Aug. 10, 2020
Subsequent Event [Member] | Series B [Member]
Class Of Stock [Line Items]
Preferred stock dividends declared	$ 0.453125
Subsequent Event [Member] | Series C [Member]
Class Of Stock [Line Items]
Preferred stock dividends declared	$ 0.406250

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