Nature of Business and Significant Accounting Policies Loans and investments (Details) - USD ($) $ in Millions |
Dec. 31, 2015 |
Sep. 30, 2013 |
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| Loans and Investments [Abstract] | ||
| Cost Method Investments | $ 1.5 | $ 1.5 |
| X | ||||||||||
- Definition Loans and Investments [Abstract] No definition available.
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| X | ||||||||||
- Definition Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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