Recent Financing Activities (Notes)	6 Months Ended
Recent Financing Activities (Notes)	Jun. 30, 2014
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	Recent Financing Transactions Credit Facility In June 2014, the Company amended its $250 million secured credit facility expiring in March 2017, extending the maturity date to March 2018. The amended facility has a variable interest rate based on the London Interbank Offered Rate or a base rate, at the Company's option, plus a spread that varies based upon the Company's secured debt credit rating. The amended facility requires that the Company's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.68 to 1.0 as of the last day of each quarter.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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