Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Statement Consolidated Balance Sheets Parenthetical Unaudited [Line Items]
Common stock, shares authorized	20,000,000	20,000,000
Common stock, stated value	$ 5.00	$ 5.00
Common stock, shares issued	4,728,267	4,728,267
Common stock, shares outstanding	4,527,847	4,525,518
Treasury stock, shares	200,420	202,749