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Consolidated Statements of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Stock dividend, percent	3.00%	3.00%	3.00%	3.00%
Stock dividend (in shares)	570,884	538,100	570,884	554,264
Cash Dividends Paid, per Share (in dollars per share)	$ 0.252	$ 0.245	$ 0.757	$ 0.716
Exercised (in shares)	14,063	12,978	76,775	91,979
Shares Issued Under Directors Stock Plan (in shares)			3,997	2,705
Shares Issued Under Employee Stock Purchase Plan (in shares)	3,455	3,188	11,403	10,801
Shares Issued for Dividend Reinvestment Plans (in shares)	12,380	11,642	39,078	35,947
Purchase of Treasury Stock (in shares)	10,151	10,688	70,711	50,697

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