Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts Receivable, Current	$ 1.10	$ 1.10
Common Class A [Member]
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	13,401,938	13,401,938
Common stock, shares outstanding	13,401,938	13,401,938
Common Class B [Member]
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	5,077,746	5,077,746
Common stock, shares outstanding	5,077,746	5,077,746