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%

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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