CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	May 25, 2005
Shares authorized for issuance of grants under equity compensation plan (in shares)				500,000
Common Shares Class A Non-Voting [Member]
Common stock, par value (in dollars per share)	$ 1
Common stock, shares authorized (in shares)	15,000,000	15,000,000	15,000,000
Common Stock Shares Issued	7,977,546	7,856,485	7,753,730
Shares available for purchase through retirement plans (in shares)	500,000
Shares authorized for issuance of grants under equity compensation plan (in shares)				500,000
Common Shares Class B Voting [Member]
Common stock, par value (in dollars per share)	$ 1
Common stock, shares authorized (in shares)	1,040,000	1,040,000	1,040,000
Common Stock Shares Issued	882,000	882,000	882,000