Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Retained Earnings [Member]
Cash dividends per share (in dollars per share)	$ 0.15	$ 0.14
Treasury acquired, shares (in shares)	58,200

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

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration