Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Allowance for loan losses	$ 8,951	$ 8,245
Foreclosed assets, valuation allowance	$ 0	$ 1,026
Stockholders' equity:
Common stock, par value (in dollars per share)	$ 5	$ 5
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	5,009,630	4,961,258
Common stock, shares outstanding (in shares)	5,009,630	4,961,258