Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock Repurchased and Retired During Period, Shares	75,333	417,577	82,423
Common Stock, Dividends, Per Share, Declared	$ 0.68	$ 0.59	$ 0.53
Common stock issuances from reinvested dividends, number of shares	14,937	9,034	10,214
Stock Issued During Period, Shares, Acquisitions	570,000	465,931
Stock Issued During Period, Shares, Employee Stock Ownership Plan	22,395	20,855	19,780
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	499	17,366	6,800