CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized	15,000,000	15,000,000
Common stock, issued	10,005,009	10,002,139
Treasury stock, shares	347,349	336,745
Preferred stock, Series A Voting, no par value, authorized 150,000 shares, none issued at March 31, 2015 and December 31, 2014
Preferred Stock, No Par Value	$ 0	$ 0
Preferred stock, shares authorized	150,000	150,000
Preferred stock, shares issued	0	0
Fixed rate cumulative preferred stock, Series B, no par value, $1,000 liquidation value, no shares authorized and issued at March 31, 2015 and no shares authorized and issued at December 31, 2014
Preferred stock, shares authorized	0	0
Preferred stock, shares issued	0	0
Preferred stock, Series B, liquidation value (in dollars per share)	$ 1,000	$ 1,000