Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Retained Earnings [Member]
Cash dividend, per share (in dollars per share)	$ 0.67	$ 0.58	$ 0.67	$ 0.58
AOCI Attributable to Parent [Member]
Other comprehensive income (loss), tax	$ 1,999	$ (624)	$ 1,999	$ (624)
Cash dividend, per share (in dollars per share)	$ 0.67	$ 0.58	$ 0.67	$ 0.58
Common stock repurchased, shares (in shares)			452,400

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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