Shareholders' Equity (Class of Stock Disclosure) (Details)	12 Months Ended
	Dec. 31, 2020 shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock Held, beginning balance	1,659,749
Common Stock Outstanding, beginning balance	92,026,562
Restricted share activity	266,325
Stock options exercised	(10,230)
Common stock repurchased	(2,104,195)
Treasury Stock Held, ending balance	3,487,389
Common Stock Outstanding, ending balance	90,198,922
Series F Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares, beginning balance	6,000
Restricted share activity	0
Stock options exercised	0
Common stock repurchased	0
Shares, ending balance	6,000
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares, beginning balance	93,686,311
Restricted share activity	0
Stock options exercised	0
Common stock repurchased	0
Treasury Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted share activity	(266,325)
Stock options exercised	(10,230)
Common stock repurchased	(2,104,195)