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Carrying value of those investments held in the segregated investment portfolio underlying the funds held - directly managed account that are carried at fair value, comprised of fixed maturities, short-term investments and certain other invested assets. All changes in the fair value are recorded in net realized and unrealized investment gains and losses in the Consolidated Statement of Operations.

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Investments that the Company did not measure at fair value on the balance sheet date, which primarily relate to the company's investments that are accounted for using the cost method of accounting, equity method of accounting or investment company accounting.

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Other invested assets and liabilities carried at cost, which are related to the underlying business related to the funds held - directly managed account.

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Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

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-Publisher SEC

-Name Regulation S-X (SX)

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-Article 5

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-Name Regulation S-X (SX)

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

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-Name Accounting Standards Codification

-Glossary Cash Equivalents

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-Publisher SEC

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.1)

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-Paragraph 1

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-Topic 230

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585

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- Definition

Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bb)

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- Definition

Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

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Fair Value (Details - narrative items) (USD $)	3 Months Ended
Fair Value (Details - narrative items) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Fair Value - Other Details [Line Items]
Funds held directly managed investments carried at fair value	$ 434,548,000		$ 472,593,000
Cash and cash equivalents	1,413,799,000	1,269,037,000	1,313,468,000	1,496,485,000
Accrued investment income	150,255,000		158,737,000
Fair Value Assets Level 2 To Level 1 Transfers Amount	0	0
Funds held directly managed [Member]
Fair Value - Other Details [Line Items]
Cash and cash equivalents	53,900,000		42,300,000
Accrued investment income	4,900,000		5,700,000
Other net assets	99,300,000		88,300,000
Trading securities [Member] \| Other invested assets [Member]
Fair Value - Other Details [Line Items]
Carrying amount of other invested assets not at fair value	191,500,000		187,300,000
Other invested assets [Member] \| Derivatives, net [Member]
Fair Value - Other Details [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances	$ 0	$ 700,000