Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Redeemable Preferred Stock, par value per share	$ 1.00	$ 1.00
Redeemable Preferred Stock, redemption value per share	$ 1,000	$ 1,000
Redeemable Preferred Stock, liquidation value per share	$ 1,000	$ 1,000
Redeemable Preferred Stock, shares authorized	23,000	23,000
Redeemable Preferred Stock, shares issued	11,096	11,295
Redeemable Preferred Stock, shares outstanding	11,096	11,295
Preferred Stock, par value per share	$ 1.00	$ 1.00
Preferred Stock, shares authorized	977,000	977,000
Preferred Stock, shares issued	0	0
Class A Common Stock [Member]
Common Stock, par value per share	$ 1.00	$ 1.00
Common Stock, shares authorized	7,000,000	7,000,000
Common Stock, shares issued	1,219,383	1,229,383
Common Stock, shares outstanding	1,219,383	1,229,383
Class B Common Stock [Member]
Common Stock, par value per share	$ 1.00	$ 1.00
Common Stock, shares authorized	40,000,000	40,000,000
Common Stock, shares issued	18,780,617	18,770,617
Common Stock, shares outstanding	6,208,118	6,361,617
Treasury Stock	12,572,499	12,409,000