Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
Consolidated Balance Sheets [Abstract]
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 3.00	$ 3.00
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	6,746,897	6,745,818
Common stock, shares outstanding	6,746,897	6,745,818
Treasury stock, shares	0	0