CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Stockholders Equity [Abstract]
Tax on change in unrealized loss on securities available for sale	$ (634)	$ (229)
Tax on change in unrealized loss on investment securities	$ 634	$ 229
Common stock dividends per share (in dollars per share)	$ 0.10	$ 0.09
Issuance of common shares under Stock Incentive Plan (in shares)	44,600	17,250