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Other Liabilities (Senior Notes) (Details) - Senior Notes | Apr. 11, 2012 | Apr. 11, 2012 USD ($)
--- | --- | ---
Debt Instrument [Line Items] |  |
Proceeds from issuance of debt |  | $ 100,000,000.0
Proceed from debt net of offering expenses and underwriting discount |  | $ 96,600,000
Stated interest rate | 8.00% | 8.00%
Effective interest rate | 8.31% | 8.31%
Redemption price as percentage of principal amount | 100.00% |

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