CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - UNAUDITED - (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]
Common stock dividends (in dollars per share)	$ 0.32	$ 0.30	$ 0.96	$ 0.90
Stock issued during period (in shares)				12,768,949
Converted options from Revere acquisition (in shares)				395,298
Stock option plan (in shares)	53,079	1,575	193,602	10,213
Employee stock purchase plan (in shares)	11,010	21,374	48,685	50,189
Restricted stock (in shares)	3,831	1,808	81,838	46,386
Stock repurchased and retired (in shares)	(1,261,828)		(1,261,828)	(820,328)