CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parentheticals) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash dividends declared per common share (in dollars per share)	$ 0.06	$ 0.06
Common Stock [Member]
Cash dividends declared per common share (in dollars per share)	$ 0.06	$ 0.06
Issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan (in shares)	4,446	2,669
Issuance of shares of common stock as s result of stock options exercised (in shares)	25,238	13,074
Restricted stock awards (in shares)	12,719	6,860
Exchange of shares of common stock in connection with stock options exercised and restricted stock vested (in shares)	5,169	3,814