Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Stock dividend, percent		300.00%	[1]	300.00%	300.00%
Stock dividends (in shares)		605,670	[1]	588,025	570,884
Cash Dividends Paid (in dollars per share)	[2]	$ 1.02		$ 0.99	$ 0.96
Shares Issued for Stock Option Exercises, net (in shares)		54,757		33,112	84,216
Shares Issued Under Directors Stock Plan (in shares)		11,051		4,245	7,580
Shares Issued Under the Employee Stock Purchase Plan (in shares)		14,903		18,286	15,379
Shares Issued for Dividend Reinvestment Plans (in shares)		51,403		63,425	51,191
Purchase of Treasury Stock (in shares)		73,555		52,505	73,495
Allocation of ESOP Stock (in shares)					5,151
Treasury Stock, Shares (in shares)		4,759,414		4,678,736

[1] Included in the shares issued for the 3% stock dividend in 2021 were treasury shares of 139,237

[2] Cash dividends paid per share have been adjusted for the September 24, 2021 3% stock dividend.