CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Preferred stock, no par value (in dollars per share)
Treasury stock, shares	241,454	235,938
Series B Preferred Stock [Member]
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	7,462	7,462
Preferred stock, shares outstanding	7,462	7,462
Series C Preferred Stock [Member]
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	4,379	4,379
Preferred stock, shares outstanding	4,379	4,379
Common Stock [Member]
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	2,308,228	2,303,228
Common stock, shares outstanding	2,308,228	2,303,228
Nonvoting Common Stock [Member]
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares issued	90,000	90,000
Common stock, shares outstanding	90,000	90,000