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Obligations Under Investment Agreements Obligations Under Investment Agreements - Additional Information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
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Dec. 31, 2014 | Dec. 31, 2013 | Apr. 30, 2013
Investments Schedule [Abstract] |  |  |
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum | 0.25%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum | 0.23%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum |
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum | 6.04%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum | 6.04%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum |
Successor [Member] |  |  |
Investments Schedule [Abstract] |  |  |
Borrowings under Guaranteed Investment Agreements | 160,079 us-gaap_BorrowingsUnderGuaranteedInvestmentAgreements / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 359,070 us-gaap_BorrowingsUnderGuaranteedInvestmentAgreements / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ 358,878 us-gaap_BorrowingsUnderGuaranteedInvestmentAgreements / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember

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- Definition Carrying value as of the balance sheet date of the sum of the obligations to contract holders to provide to them an agreed upon rate of return pursuant to the terms of the underlying contract. These contracts represent lending by the contract holders to the entity in return for a guaranteed (primarily fixed) interest rate until maturity, unless called earlier if the contracts provide that option to the contract holders (usually institutions). There is little or no insurance risk for the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.14) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition When presenting a range of interest rates, the highest effective rate for funds borrowed under the debt agreement as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition When presenting a range of interest rates, the lowest effective rate for funds borrowed under the debt agreement as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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