Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Retained Earnings [Member]
Cash dividends per share (in dollars per share)	$ 0.16	$ 0.15	$ 0.48	$ 0.45
Treasury acquired, shares (in shares)	165,058		346,103	58,200

Number of shares that have been repurchased during the period and are being held in treasury.

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Period Type:	duration