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Basis of Presentation and Summary of Significant Accounting Policies (Fair Value) (Details) (USD $)
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3 Months Ended | |
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Sep. 30, 2014
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Dec. 31, 2013
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Liabilities measured at fair value | $ 0 | |
| Impairment of debt and equity securities | 382,755 | |
| Convertible subordinated notes due 2021 | 113,737,000 | 0 |
| Convertible junior subordinated debentures due to an affiliate | 0 | 89,770,000 |
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Level 3 inputs [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Liabilities measured at fair value | $ 0 |