Consolidated Balance Sheets (Parentheticals) - $ / shares $ / shares in Thousands	Dec. 31, 2016	Dec. 31, 2015
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	17,162,996	17,162,996
Common stock, shares outstanding (in shares)	13,440,442	13,385,154