Condensed Consolidated Statement of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]
Purchase of treasury stock (in shares)	99,661	119,831	149,376	180,827
Dividends per common share (in dollars per share)	$ 0.125	$ 0			$ 0.375	$ 0.125