Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AOCI Attributable to Parent [Member]
Other comprehensive income (loss), tax	$ 950	$ (635)	$ 369
Retained Earnings [Member]
Cash dividend, per share (in dollars per share)	$ 1.39	$ 1.21	$ 1.17
Other comprehensive income (loss), tax	$ 950	$ (635)	$ 369
Common stock repurchased, shares (in shares)	468,400

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Balance Type:	na
Period Type:	duration