Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Common Stock [Member]
Net settlement of restricted stock vesting (in shares)	14,348	9,821
Exercise of stock options (in shares)	13,471	4,500
Common stock cash dividend declared, per share (in dollars per share)	$ 0.12

Number of share options (or share units) exercised during the current period.

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