Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]
Stock option exercise/stock unit conversions (21,968 shares QTD and 650,044 shares YTD during 2021 and 53,425 shares QTD and 196,948 shares YTD during 2020)	21,968	53,425	650,044	196,948
Redemption of series A preferred stock (6,000,000 shares)				6,000,000
Purchase of treasury stock (478 shares QTD and 12,103 shares during 2021 and 400 shares QTD and 182,225 shares during 2020)	478	400	12,103	182,225
Treasury stock issued to the 401(k) stock purchase plan (18,555 shares YTD in 2021 and 58,900 shares QTD and 97,843 shares YTD in 2020)		58,900	18,555	97,843
Cash dividend - preferred stock (Approximately $11.13 per share QTD and $36.59 per share YTD in 2021 and $0.34 per share YTD during 2020)	$ 11.13		$ 36.59	$ 0.34
Cash dividend - Preferred Stock Dividends equivalent Per depositary Share Declared ($0.28 QTD and $0.91 YTD during 2021)	0.28		0.91
Cash dividends - common stock ($0.75 per share QTD and $2.19 per share YTD during 2021 and $0.71 per share QTD and $2.13 per share YTD during 2020)	$ 0.75	$ 0.71	$ 2.19	$ 2.13