CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Loans, allowance for credit losses (in dollars)	$ 2,602	$ 2,484
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	2,790,260	2,786,855
Common stock, shares outstanding	2,790,260	2,786,855