Consolidated Statements of Changes In Stockholders' 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 dividend, percent	300.00%	300.00%	300.00%	300.00%
Stock dividends (in shares)	605,670	588,025	605,670	588,025
Cash Dividends Paid, per Share (in dollars per share)	$ 0.252	$ 0.245	$ 0.757	$ 0.735
Stock Options Exercised (in shares)	30,346	8,884	52,610	26,039
Shares Issued Under the Directors' Stock Plan (in shares)	2,627		8,471	4,245
Shares Issued Under Employee Stock Purchase Plan (in shares)	3,387	4,739	11,304	13,697
Shares Issued for Dividend Reinvestment Plans (in shares)	12,826	16,443	37,841	48,473
Purchase of Treasury Stock (in shares)	67,649	2,236	72,750	52,257