CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Issuance of common stock for dividend reinvestment plan (in shares)	8,918	10,607
Common stock purchased (in shares)	427,396	869,723
Net issuance of common stock under employee stock plans (in shares)	126,260	47,428
Cash dividends paid on common stock (in dollars per share)	$ 0.32	$ 0.31