Note 6. Long-Term Debt and Other Financial Instruments (Details) - Carrying values and estimated fair values of the Company's financial instruments: (Parentheticals) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revolving credit facility, available (in Dollars)	$ 45	$ 45
Revolving credit facility, available (in Dollars)	$ 45	$ 45
11.75% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate on senior notes	11.75%	11.75%