Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Shareholders' Equity
Common stock, par value (in dollars per share)	$ 3.13	$ 3.13
Common stock, authorized (in shares)	8,000,000	8,000,000
Common stock, issued (in shares)	3,713,342	3,695,160
Common stock, outstanding (in shares)	3,713,342	3,695,160
Common stock, nonvested (in shares)	34,109	31,423