CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	13,170,729	12,958,341
Common stock, shares outstanding (in shares)	13,170,729	12,958,341
Series A Preferred Stock
Shares issued (in shares)	0	0
Shares outstanding (in shares)	0	0
Series B Preferred Stock
Shares issued (in shares)	0	0
Shares outstanding (in shares)	0	0