Significant Accounting Policies (Policy)	9 Months Ended
Sep. 30, 2016
Accounting Policies [Abstract]
Basis of Presentation	BASIS OF PRESENTATION These consolidated financial statements have been prepared on the basis of accounting principles generally accepted in the United States (“GAAP”) for interim financial information and in conformity with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete consolidated financial statements. In the opinion of management, these unaudited consolidated financial statements reflect all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the Company’s financial position and results of operations as at the end of and for the periods presented. All significant intercompany accounts and transactions have been eliminated from these statements. Certain comparative information has been reclassified to conform to the current presentation. Because of the seasonality of the Company’s business, the results of operations and cash flows for any interim period will not necessarily be indicative of the results of operations and cash flows for the full fiscal year or subsequent quarters.
Use of Estimates in Financial Statements	USE OF ESTIMATES IN FINANCIAL STATEMENTS The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the reserve for claims and claim expenses; reinsurance recoverables, including allowances for reinsurance recoverables deemed uncollectible; estimates of written and earned premiums; fair value, including the fair value of investments, financial instruments and derivatives; impairment charges and the Company’s deferred tax valuation allowance.
Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements Not Yet Adopted	RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period In June 2014, the FASB issued ASU No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (“ASU 2014-12”). The objective of ASU 2014-12 is to resolve the diverse accounting treatment of share-based payment awards in situations where an employee would be eligible to vest in the award regardless of whether the employee is rendering service on the date the performance target is achieved. For example, if an employee is eligible to retire or otherwise terminate employment before the end of the period in which a performance target could be achieved and still be eligible to vest in the award. ASU 2014-12 will resolve if and when the performance target is achieved. ASU 2014-12 became effective for all entities in annual and interim periods beginning after December 15, 2015. Early adoption was permitted. The Company adopted ASU 2014-12 effective January 1, 2016, and prospectively applied the amendments in ASU 2014-12 to all awards granted or modified after the effective date. The adoption of ASU 2014-12 did not have a material impact on the Company’s consolidated statements of operations and financial position. Amendments to the Consolidation Analysis In February 2015, the FASB issued ASU No. 2015-02, Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 will affect reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under ASU 2015-02. ASU 2015-02 set forth amendments: modifying the evaluation of whether limited partnerships and similar legal entities are VIEs; eliminating the presumption that a general partner should consolidate a limited partnership; affecting the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangement and related party relationships; and providing a scope exception from consolidation guidance for reporting entities with interests in certain investment funds. ASU 2015-02 became effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption was permitted. The Company adopted ASU 2015-02 effective January 1, 2016 and it did not have a material impact on the Company’s consolidated statements of operations and financial position. See “Note 7. Variable Interest Entities” for additional information related to the Company’s VIE’s. Simplifying the Presentation of Debt Issuance Costs In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). The objective of ASU 2015-03 is to simplify the presentation of debt issuance costs by requiring debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in ASU 2015-03. ASU 2015-03 became effective for public business entities in annual and interim periods beginning after December 15, 2015 with retroactive application. The Company retrospectively adopted ASU 2015-03 effective January 1, 2016 and the impact on the Company’s consolidated balance sheet at December 31, 2015 was to reduce each of other assets and debt by $5.6 million, respectively, which represented the deferred debt issuance costs previously recorded in other assets and reclassified as an offset to debt. In addition, for the nine months ended September 30, 2015, corporate expense was reduced by $0.4 million and interest expense was increased by $0.4 million to reclassify the amortization of deferred debt issuance costs from corporate expense to interest expense. There was no net impact on the Company’s consolidated statements of operations or financial position as a result of the retrospective adoption of ASU 2015-03. Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) In May 2015, the FASB issued ASU No. 2015-07, Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) (“ASU 2015-07”). ASU 2015-07 removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. ASU 2015-07 also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using the net asset value per share practical expedient. Rather, those disclosures are limited to investments for which the entity has elected to measure the fair value using that practical expedient. ASU 2015-07 became effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. A reporting entity should apply the amendments retrospectively to all periods presented. The retrospective approach requires that an investment for which fair value is measured using the net asset value per share practical expedient be removed from the fair value hierarchy in all periods presented in an entity’s financial statements. Earlier application was permitted. The Company retrospectively adopted ASU 2015-07 effective January 1, 2016; since this update is disclosure-related only, it did not have a material impact on the Company’s statements of operations and financial position. Simplifying the Accounting for Measurement-Period Adjustments In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments (“ASU 2015-16”). ASU 2015-16 removes the requirement to retrospectively account for adjustments made to provisional amounts recognized in a business combination. Rather, those adjustments are to be recognized by the acquirer in the reporting period in which the adjustment amounts are determined. A reporting entity is also required to disclose, in the reporting period in which the adjustment amounts are recorded, the effect on earnings of changes in depreciation, amortization, or other income effects, as a result of the change to provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, the reporting entity would present on the face of the income statement or disclose in the notes the amounts that would have been recorded in previous reporting periods if the adjustment to provisional amounts had been recognized as of the acquisition date. ASU 2015-16 was effective for public business entities in annual and interim periods beginning after December 15, 2015. ASU 2015-16 should be applied prospectively to adjustments for provisional amounts that occur after the effective date, with earlier application permitted for financial statements that have not been issued. The Company adopted ASU 2015-16 effective January 1, 2016 and it did not have a material impact on the Company’s consolidated statements of operations and financial position. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED Revenue from Contracts with Customers In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”). ASU 2014-09 provides comprehensive guidance on the recognition of revenue from customers arising from the transfer of goods and services. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also provides guidance on accounting for certain contract costs and will also require new disclosures. ASU 2014-09 is effective for public business entities in annual and interim periods beginning after December 15, 2017. Early adoption is permitted. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company’s consolidated statements of operations and financial position. Disclosures about Short-Duration Contracts In May 2015, the FASB issued ASU No. 2015-09, Disclosures about Short-Duration Contracts (“ASU 2015-09”). ASU 2015-09 requires insurance entities to disclose for annual reporting periods additional information about the liability for unpaid claims and claim adjustment expenses, including: (1) incurred and paid claims development information by accident year, on a net basis, for the number of years for which claims incurred typically remain outstanding, not exceeding 10 years; (2) a reconciliation of incurred and paid claims development information to the aggregate carry amount of the liability for claims and claim adjustment expenses, with separate disclosure of reinsurance recoverable on unpaid claims for each period presented in the statement of financial position; (3) for each accident year presented of incurred claims development information, the total of incurred but not reported liabilities plus expected development on reported claims including in the liability for unpaid claims and claim adjustment expenses, accompanied by a description of the reserving methodologies; (4) for each accident year presented of incurred claims development information, quantitative information about claim frequency accompanied by a qualitative description of methodologies used for determining claim frequency information; and (5) for all claims, the average annual percentage payout of incurred claims by age for the same number of accident years presented in (3) and (4) above. ASU 2015-09 also requires insurance entities to disclose information about significant changes in methodologies and assumptions used to calculate the liability for unpaid claims and claim adjustment expenses, including the reasons for the change and the effects on the financial statements. In addition, ASU 2015-09 requires insurance entities to disclose for annual and interim reporting periods a rollforward of the liability for unpaid claims and claim adjustment expenses. ASU 2015-09 is effective for public business entities in annual periods beginning after December 31, 2015, and interim periods within annual periods beginning after December 31, 2016. Early adoption is permitted. ASU 2015-09 should be applied retrospectively by providing comparative disclosures for each period presented, except for those requirements that apply only to the current period. As this guidance is disclosure-related only, the adoption of this guidance is not expected to have a material impact on the Company’s consolidated statements of operations and financial position. Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). ASU 2016-01 requires equity investments (except those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, simplifies the impairment assessment of equity investments without readily determinable values by requiring a qualitative assessment to identify impairment, eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost, requires the use of the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liabilities in accordance with the fair value option, requires the separate presentation of financial assets and financial liabilities by measurement category and for form of financial asset on the balance sheet or the accompanying notes to the financial statements and clarifies that the reporting organization should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the organization’s other deferred tax assets. ASU 2016-01 is effective for public business entities in annual and interim periods beginning after December 15, 2017. Earlier adoption is generally not permitted, except for certain specific provisions of ASU 2016-01. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company’s consolidated statements of operations and financial position.

RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS

Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period

In June 2014, the FASB issued ASU No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (“ASU 2014-12”). The objective of ASU 2014-12 is to resolve the diverse accounting treatment of share-based payment awards in situations where an employee would be eligible to vest in the award regardless of whether the employee is rendering service on the date the performance target is achieved. For example, if an employee is eligible to retire or otherwise terminate employment before the end of the period in which a performance target could be achieved and still be eligible to vest in the award. ASU 2014-12 will resolve if and when the performance target is achieved. ASU 2014-12 became effective for all entities in annual and interim periods beginning after December 15, 2015. Early adoption was permitted. The Company adopted ASU 2014-12 effective January 1, 2016, and prospectively applied the amendments in ASU 2014-12 to all awards granted or modified after the effective date. The adoption of ASU 2014-12 did not have a material impact on the Company’s consolidated statements of operations and financial position.

Amendments to the Consolidation Analysis

In February 2015, the FASB issued ASU No. 2015-02, Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 will affect reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under ASU 2015-02. ASU 2015-02 set forth amendments: modifying the evaluation of whether limited partnerships and similar legal entities are VIEs; eliminating the presumption that a general partner should consolidate a limited partnership; affecting the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangement and related party relationships; and providing a scope exception from consolidation guidance for reporting entities with interests in certain investment funds. ASU 2015-02 became effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption was permitted. The Company adopted ASU 2015-02 effective January 1, 2016 and it did not have a material impact on the Company’s consolidated statements of operations and financial position. See “Note 7. Variable Interest Entities” for additional information related to the Company’s VIE’s.

Simplifying the Presentation of Debt Issuance Costs

In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). The objective of ASU 2015-03 is to simplify the presentation of debt issuance costs by requiring debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in ASU 2015-03. ASU 2015-03 became effective for public business entities in annual and interim periods beginning after December 15, 2015 with retroactive application. The Company retrospectively adopted ASU 2015-03 effective January 1, 2016 and the impact on the Company’s consolidated balance sheet at December 31, 2015 was to reduce each of other assets and debt by $5.6 million, respectively, which represented the deferred debt issuance costs previously recorded in other assets and reclassified as an offset to debt. In addition, for the nine months ended September 30, 2015, corporate expense was reduced by $0.4 million and interest expense was increased by $0.4 million to reclassify the amortization of deferred debt issuance costs from corporate expense to interest expense. There was no net impact on the Company’s consolidated statements of operations or financial position as a result of the retrospective adoption of ASU 2015-03.

Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent)

In May 2015, the FASB issued ASU No. 2015-07, Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) (“ASU 2015-07”). ASU 2015-07 removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. ASU 2015-07 also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using the net asset value per share practical expedient. Rather, those disclosures are limited to investments for which the entity has elected to measure the fair value using that practical expedient. ASU 2015-07 became effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. A reporting entity should apply the amendments retrospectively to all periods presented. The retrospective approach requires that an investment for which fair value is measured using the net asset value per share practical expedient be removed from the fair value hierarchy in all periods presented in an entity’s financial statements. Earlier application was permitted. The Company retrospectively adopted ASU 2015-07 effective January 1, 2016; since this update is disclosure-related only, it did not have a material impact on the Company’s statements of operations and financial position.

Simplifying the Accounting for Measurement-Period Adjustments

In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments (“ASU 2015-16”). ASU 2015-16 removes the requirement to retrospectively account for adjustments made to provisional amounts recognized in a business combination. Rather, those adjustments are to be recognized by the acquirer in the reporting period in which the adjustment amounts are determined. A reporting entity is also required to disclose, in the reporting period in which the adjustment amounts are recorded, the effect on earnings of changes in depreciation, amortization, or other income effects, as a result of the change to provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, the reporting entity would present on the face of the income statement or disclose in the notes the amounts that would have been recorded in previous reporting periods if the adjustment to provisional amounts had been recognized as of the acquisition date. ASU 2015-16 was effective for public business entities in annual and interim periods beginning after December 15, 2015. ASU 2015-16 should be applied prospectively to adjustments for provisional amounts that occur after the effective date, with earlier application permitted for financial statements that have not been issued. The Company adopted ASU 2015-16 effective January 1, 2016 and it did not have a material impact on the Company’s consolidated statements of operations and financial position.

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED

Revenue from Contracts with Customers

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”). ASU 2014-09 provides comprehensive guidance on the recognition of revenue from customers arising from the transfer of goods and services. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also provides guidance on accounting for certain contract costs and will also require new disclosures. ASU 2014-09 is effective for public business entities in annual and interim periods beginning after December 15, 2017. Early adoption is permitted. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company’s consolidated statements of operations and financial position.

Disclosures about Short-Duration Contracts

In May 2015, the FASB issued ASU No. 2015-09, Disclosures about Short-Duration Contracts (“ASU 2015-09”). ASU 2015-09 requires insurance entities to disclose for annual reporting periods additional information about the liability for unpaid claims and claim adjustment expenses, including: (1) incurred and paid claims development information by accident year, on a net basis, for the number of years for which claims incurred typically remain outstanding, not exceeding 10 years; (2) a reconciliation of incurred and paid claims development information to the aggregate carry amount of the liability for claims and claim adjustment expenses, with separate disclosure of reinsurance recoverable on unpaid claims for each period presented in the statement of financial position; (3) for each accident year presented of incurred claims development information, the total of incurred but not reported liabilities plus expected development on reported claims including in the liability for unpaid claims and claim adjustment expenses, accompanied by a description of the reserving methodologies; (4) for each accident year presented of incurred claims development information, quantitative information about claim frequency accompanied by a qualitative description of methodologies used for determining claim frequency information; and (5) for all claims, the average annual percentage payout of incurred claims by age for the same number of accident years presented in (3) and (4) above. ASU 2015-09 also requires insurance entities to disclose information about significant changes in methodologies and assumptions used to calculate the liability for unpaid claims and claim adjustment expenses, including the reasons for the change and the effects on the financial statements. In addition, ASU 2015-09 requires insurance entities to disclose for annual and interim reporting periods a rollforward of the liability for unpaid claims and claim adjustment expenses. ASU 2015-09 is effective for public business entities in annual periods beginning after December 31, 2015, and interim periods within annual periods beginning after December 31, 2016. Early adoption is permitted. ASU 2015-09 should be applied retrospectively by providing comparative disclosures for each period presented, except for those requirements that apply only to the current period. As this guidance is disclosure-related only, the adoption of this guidance is not expected to have a material impact on the Company’s consolidated statements of operations and financial position.

Recognition and Measurement of Financial Assets and Financial Liabilities

In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). ASU 2016-01 requires equity investments (except those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, simplifies the impairment assessment of equity investments without readily determinable values by requiring a qualitative assessment to identify impairment, eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost, requires the use of the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liabilities in accordance with the fair value option, requires the separate presentation of financial assets and financial liabilities by measurement category and for form of financial asset on the balance sheet or the accompanying notes to the financial statements and clarifies that the reporting organization should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the organization’s other deferred tax assets. ASU 2016-01 is effective for public business entities in annual and interim periods beginning after December 15, 2017. Earlier adoption is generally not permitted, except for certain specific provisions of ASU 2016-01. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company’s consolidated statements of operations and financial position.