CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Treasury stock, common shares	352,161	352,161
Common Stock
Common Stock, par value	1	1
Common Stock, authorized	50,000,000	50,000,000
Common Stock, shares issued	18,705,914	18,605,993
Common Stock, shares outstanding	18,353,753	18,253,832
Class B Common Stock
Common Stock, par value	1	1
Common Stock, authorized	1,500,000	1,500,000
Common Stock, shares issued	1,050,012	1,050,012
Common Stock, shares outstanding	1,050,012	1,050,012