Consolidated Condensed Balance Sheets (Parentheticals) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Common stock, par value	$ 3.00	$ 3.00
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	16,170,030	15,998,937
Class B Common stock, par value	$ 3.00	$ 3.00
Class B Common stock, shares authorized	16,000,000	16,000,000
Class B Common stock, shares issued	952,784	882,644
Common stock in treasury, shares held	4,013,440	3,976,396