CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - UNAUDITED - (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Common stock dividends (in dollars per share)	$ 0.32	$ 0.30
Stock option plan (in shares)	102,365	6,013
Employee stock purchase plan (in shares)	20,417	8,617
Restricted stock (in shares)	7,830
Stock repurchased and retired (in shares)		820,328