SiriusPoint (SPNT) 10-K 27 Feb 15 2014 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Feb. 25, 2015	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	Third Point Reinsurance Ltd.
Entity Central Index Key	1576018
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		104,585,030
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$884.40

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets
Equity securities, trading, at fair value (cost - $1,078,859; 2013 - $824,723)	$1,177,796	$954,111
Debt securities, trading, at fair value (cost - $546,933; 2013 - $408,754)	569,648	441,424
Other investments, at fair value	83,394	65,329
Total investments in securities and commodities	1,830,838	1,460,864
Cash and cash equivalents	28,734	31,625
Restricted cash and cash equivalents	417,307	193,577
Due from brokers	58,241	98,386
Securities purchased under an agreement to sell	29,852	38,147
Derivative assets, at fair value	21,130	39,045
Interest and dividends receivable	2,602	2,615
Reinsurance balances receivable	303,649	191,763
Deferred acquisition costs, net	155,901	91,193
Loss and loss adjustment expenses recoverable	814	9,277
Other assets	3,512	3,398
Total assets	2,852,580	2,159,890
Liabilities
Accounts payable and accrued expenses	10,085	9,456
Reinsurance balances payable	27,040	9,081
Deposit liabilities	145,430	120,946
Unearned premium reserves	433,809	265,187
Loss and loss adjustment expense reserves	277,362	134,331
Securities sold, not yet purchased, at fair value	82,485	56,056
Due to brokers	312,609	44,870
Derivative liabilities, at fair value	11,015	8,819
Interest and dividends payable	697	748
Total liabilities	1,300,532	649,494
Commitments and contingent liabilities
Shareholders’ equity
Preference shares (par value $0.10; authorized, 30,000,000; none issued)	0	0
Common shares (par value $0.10; authorized, 300,000,000; issued and outstanding, 104,473,402 (2013: 103,888,916))	10,447	10,389
Additional paid-in capital	1,065,489	1,055,690
Retained earnings	375,977	325,582
Shareholders’ equity attributable to shareholders	1,451,913	1,391,661
Non-controlling interests	100,135	118,735
Total shareholders’ equity	1,552,048	1,510,396
Total liabilities and shareholders’ equity	$2,852,580	$2,159,890

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Assets
Equity securities, trading, cost	$1,078,859	$824,723
Debt securities, trading, cost	$546,933	$408,754
Shareholders’ equity
Preference shares, par value (in dollars per share)	$0.10	$0.10
Preference shares, shares authorized (in shares)	30,000,000	30,000,000
Preference shares, shares issued (in shares)	0	0
Preference shares, shares outstanding (in shares)	0	0
Common share, par value (in dollars per share)	$0.10	$0.10
Common share, shares authorized (in shares)	300,000,000	300,000,000
Common share, shares issued (in shares)	104,473,402	103,888,916
Common share, shares outstanding (in shares)	104,473,402	103,888,916

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Gross premiums written	$253,802	$126,403	$145,508	$87,587	$162,277	$45,425	$98,215	$96,020	$613,300	$401,937	$190,374
Gross premiums ceded	0	-150	0	0	0	0	0	-9,975	-150	-9,975	0
Net premiums written	253,802	126,253	145,508	87,587	162,277	45,425	98,215	86,045	613,150	391,962	190,374
Change in net unearned premium reserves	-70,230	-17,305	-66,758	-14,325	-103,767	20,904	-35,928	-52,504	-168,618	-171,295	-93,893
Net premiums earned	183,572	108,948	78,750	73,262	58,510	66,329	62,287	33,541	444,532	220,667	96,481
Net investment income	-6,490	1,552	40,485	50,035	89,321	54,617	32,826	81,361	85,582	258,125	136,868
Total revenues	177,082	110,500	119,235	123,297	147,831	120,946	95,113	114,902	530,114	478,792	233,349
Expenses
Loss and loss adjustment expenses incurred, net	132,364	60,115	44,409	46,259	36,133	39,349	45,692	18,638	283,147	139,812	80,306
Acquisition costs, net	43,875	38,317	29,583	25,431	18,833	21,117	14,921	13,073	137,206	67,944	24,604
General and administrative expenses	10,310	10,124	9,549	10,025	8,965	9,846	7,217	7,008	40,008	33,036	27,376
Other expenses	2,606	2,982	1,020	787	2,247	1,246	759	670	7,395	4,922	446
Total expenses	189,155	111,538	84,561	82,502	66,178	71,558	68,589	39,389	467,756	245,714	132,732
Income before income tax expense	-12,073	-1,038	34,674	40,795					62,358	233,078	100,617
Income tax expense	-1,731	-1,542	-2,375	0					-5,648	0	0
Income including non-controlling interests	-13,804	-2,580	32,299	40,795	81,653	49,388	26,524	75,513	56,710	233,078	100,617
Income attributable to non-controlling interests	-875	-3,417	-1,007	-1,016	-1,565	-2,818	-301	-1,083	-6,315	-5,767	-1,216
Net income	($14,679)	($5,997)	$31,292	$39,779	$80,088	$46,570	$26,223	$74,430	$50,395	$227,311	$99,401
Earnings per share
Basic (in dollars per share)	($0.14)	($0.06)	$0.30	$0.38	$0.77	$0.52	$0.33	$0.94	$0.48	$2.58	$1.26
Diluted (in dollars per share)	($0.14)	($0.06)	$0.29	$0.37	$0.75	$0.51	$0.33	$0.93	$0.47	$2.54	$1.26
Weighted average number of common shares used in the determination of earnings per share
Basic (in shares)	103,324,616	103,295,920	103,264,616	103,264,616	103,264,616	89,620,394	78,432,132	78,432,132	103,287,693	87,505,540	78,432,132
Diluted (in shares)	103,324,616	103,295,920	106,433,881	103,413,580	106,390,339	90,915,805	79,254,268	79,083,675	106,391,059	88,970,531	78,598,236

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Common shares / Share Capital	Additional paid-in capital	Subscriptions receivable	Retained earnings	Shareholders’ equity attributable to shareholders	Non-controlling interests	Non-controlling interests	Non-controlling interests
								Catastrophe Fund	Catastrophe Fund Manager
Balance, beginning of period at Dec. 31, 2011		$7,843,000	$756,219,000	($177,507,000)	($1,130,000)		$0
Balance, beginning of period (in shares) at Dec. 31, 2011		78,432,132
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares (in shares)		0
Issuance of common shares		0	-197,000
Fair value of Founder and advisor warrants			0
Fair value of warrants qualifying as shareholders’ equity			0
Share compensation expense			6,408,000
Receipt of subscriptions due from shareholders				177,507,000
Income including non-controlling interests	99,401,000				100,617,000
Income attributable to non-controlling interests	-1,216,000				-1,216,000
Income attributable to non-controlling interests	100,617,000						1,216,000
Non-controlling interest in investment affiliate, net							38,913,000
Non-controlling interest								19,646,000	2,000
Total shareholders’ equity	928,321,000
Balance. end of period at Dec. 31, 2012		7,843,000	762,430,000	0	98,271,000	868,544,000	59,777,000
Balance, end of period (in shares) at Dec. 31, 2012		78,432,132
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares (in shares)		25,456,784
Issuance of common shares		2,546,000	283,460,000
Fair value of Founder and advisor warrants			3,747,000
Fair value of warrants qualifying as shareholders’ equity			-3,747,000
Share compensation expense			9,800,000
Receipt of subscriptions due from shareholders				0
Income including non-controlling interests	227,311,000				233,078,000
Income attributable to non-controlling interests	-5,767,000				-5,767,000
Income attributable to non-controlling interests	233,078,000						5,767,000
Non-controlling interest in investment affiliate, net							27,867,000
Non-controlling interest								25,324,000	0
Total shareholders’ equity	1,510,396,000
Balance. end of period at Dec. 31, 2013	1,391,661,000	10,389,000	1,055,690,000	0	325,582,000	1,391,661,000	118,735,000
Balance, end of period (in shares) at Dec. 31, 2013		103,888,916
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares (in shares)		584,486
Issuance of common shares		58,000	541,000
Fair value of Founder and advisor warrants			0
Fair value of warrants qualifying as shareholders’ equity			0
Share compensation expense			9,258,000
Receipt of subscriptions due from shareholders				0
Income including non-controlling interests	50,395,000				56,710,000
Income attributable to non-controlling interests	-6,315,000				-6,315,000
Income attributable to non-controlling interests	56,710,000						6,315,000
Non-controlling interest in investment affiliate, net							-31,066,000
Non-controlling interest								6,151,000	0
Total shareholders’ equity	1,552,048,000
Balance. end of period at Dec. 31, 2014	$1,451,913,000	$10,447,000	$1,065,489,000	$0	$375,977,000	$1,451,913,000	$100,135,000
Balance, end of period (in shares) at Dec. 31, 2014		104,473,402

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Cash Flows [Abstract]
Income including non-controlling interests	$56,710	$233,078	$100,617
Adjustments to reconcile income including non-controlling interests to net cash provided by (used in) operating activities
Share compensation expense	9,258	9,800	6,408
Interest expense on deposit liabilities	4,346	4,271	296
Net unrealized (gain) loss on investments and derivatives	85,057	-78,490	-113,271
Net realized gain on investments and derivatives	-193,957	-236,333	-55,632
Amortization of premium and accretion of discount, net	-1,044	-262	-2,434
Changes in assets and liabilities:
Reinsurance balances receivable	-111,886	-107,483	-84,280
Deferred acquisition costs, net	-64,708	-45,810	-45,383
Loss and loss adjustment expenses recoverable	8,463	-9,277	0
Other assets	-114	-275	-1,701
Interest and dividends receivable, net	-38	-1,034	-833
Unearned premium reserves	168,622	171,294	93,893
Loss and loss adjustment expense reserves	143,031	67,060	67,271
Accounts payable and accrued expenses	629	4,089	4,157
Reinsurance balances payable	18,061	9,081	0
Net cash provided by (used in) operating activities	122,430	19,709	-30,892
Investing activities
Purchases of investments	-3,114,906	-2,172,077	-2,317,234
Proceeds from sales of investments	2,857,404	1,943,655	1,521,110
Purchases of investments to cover short sales	-232,568	-407,965	-535,443
Proceeds from short sales of investments	278,569	290,770	729,182
Change in due to/from brokers, net	307,884	12,162	-65,678
Increase (decrease) in securities purchased under an agreement to sell	8,294	22,261	-60,408
Change in restricted cash and cash equivalents	-223,730	-115,950	-77,627
Net cash used in investing activities	-119,053	-427,144	-806,098
Financing activities
Proceeds from issuance of common shares, net of costs	599	286,095	158,593
Increase in deposit liabilities	18,048	65,769	50,000
Non-controlling interest in investment affiliate, net	-31,066	27,867	38,913
Non-controlling interest in Catastrophe Fund	6,151	25,324	19,646
Non-controlling interest in Catastrophe Manager	0	0	2
Net cash provided by (used in) financing activities	-6,268	405,055	267,154
Net increase (decrease) in cash and cash equivalents	-2,891	-2,380	-569,836
Cash and cash equivalents at beginning of period	31,625	34,005	603,841
Cash and cash equivalents at end of period	28,734	31,625	34,005
Supplementary information
Interest paid in cash	3,237	4,221	1,823
Income taxes paid in cash	$3,056	$0	$0

Organization

Organization	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Third Point Reinsurance Ltd. (together with its wholly and majority owned subsidiaries, the “Company”) was incorporated under the laws of Bermuda on October 6, 2011.  Through its reinsurance subsidiaries, the Company is a provider of global specialty property and casualty reinsurance products.  The Company operates through two licensed reinsurance subsidiaries, Third Point Reinsurance Company Ltd. (“Third Point Re”), a Bermuda reinsurance company that commenced operations in January 2012, and Third Point Reinsurance (USA) Ltd. (“Third Point Re USA”).
	Third Point Re USA is a Bermuda reinsurance company that was incorporated on November 21, 2014 and commenced operations in February 2015.  Third Point Re USA made an election under Section 953d of the Internal Revenue Code to be taxed as a U.S. entity.  Third Point Re USA will price and underwrite U.S. domiciled reinsurance business from an office in the United States.  Third Point Re USA is a wholly owned subsidiary of Third Point Re (USA) Holdings, Inc. (“TPRUSA”), an intermediate holding company based in the U.S., which is a wholly owned subsidiary of Third Point Re (UK) Holdings Ltd. (“Third Point Re UK”), an intermediate holding company based in the United Kingdom.  Third Point Re UK is a wholly owned subsidiary of Third Point Reinsurance Ltd.
	On June 15, 2012, Third Point Reinsurance Opportunities Fund Ltd. (the “Catastrophe Fund”), Third Point Reinsurance Investment Management Ltd. (the “Catastrophe Fund Manager”), and Third Point Re Cat Ltd. (the “Catastrophe Reinsurer”) were incorporated in Bermuda. The Company subsequently announced a strategic arrangement with Hiscox Insurance Company (Bermuda) Limited (“Hiscox”) to launch a collateralized catastrophe reinsurance underwriting fund management business through these entities.  The Catastrophe Fund Manager, a Bermuda exempted company, is the investment manager of the Catastrophe Fund.  In December 2014, the Company announced that it would no longer accept investments in the Catastrophe Fund and that no new business would be written in the Catastrophe Reinsurer and that the Company would be redeeming all existing investments in the Catastrophe Fund.  The Catastrophe Fund Manager will continue to manage the run off of the remaining exposure in the Catastrophe Fund.
	On August 2, 2012, the Company established a wholly-owned subsidiary in the United Kingdom, Third Point Re Marketing (UK) Limited (“TPRUK”). On May 20, 2013, TPRUK was licensed as an insurance intermediary by the UK Financial Conduct Authority.
	On August 20, 2013, the Company completed an initial public offering (“IPO”) of 24,832,484 common shares at an offering price of $12.50 per share. The net proceeds of the offering were $286.0 million, after deducting offering costs.  The Company’s common shares are listed on the New York Stock Exchange under the symbol “TPRE”.
	These consolidated financial statements include the results of the Company and its wholly and majority owned subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).  All significant intercompany accounts and transactions have been eliminated.

Significant_accounting_policie

Significant accounting policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Significant accounting policies	The following is a summary of the significant accounting and reporting policies adopted by the Company:
	Use of estimates
	The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and the 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 from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the loss and loss adjustment expense reserves, estimates of written and earned premiums and fair value of financial instruments.
	Cash and restricted cash and cash equivalents
	Cash and cash equivalents consist of cash held in banks and other short-term, highly liquid investments with original maturity dates of ninety days or less.
	Restricted cash and cash equivalents consist of cash held in trust accounts with the Catastrophe Reinsurer, securing collateralized reinsurance contracts written, trust accounts securing obligations under certain reinsurance contracts and cash held with brokers securing letters of credit issued under credit facilities.
	Premium revenue recognition
	To the extent that the amount of written premium is estimable, the Company estimates the ultimate premiums for the entire contract period and records this estimate at the inception of the contract. For contracts where the full written premium is not estimable at inception, the Company records written premium for the portion of the contract period for which the amount is estimable. These estimates are based primarily on information in the underlying contracts as well as information provided by clients and/or brokers.
	Premiums written are earned over the exposure period in proportion to the period of risk covered. Unearned premiums represent the portion of premiums written that relate to the remaining term of the underlying policies in force.
	Premiums for retroactive exposures in reinsurance contracts are earned at the inception of the contract, as all of the underlying loss events covered by these exposures occurred in the past. Any underwriting profit at inception related to retroactive exposures in a reinsurance contract is deferred and recognised over the estimated future payout of the loss and loss adjustment expenses reserves. Any underwriting loss at inception related to retroactive exposures in a reinsurance contract is recognised immediately.
	Changes in premium estimates are expected and may result in adjustments in any reporting period. These estimates change over time as additional information regarding the underlying business volume is obtained. Any subsequent adjustments arising on such estimates are recorded in the period in which they are determined.
	Reinsurance premiums ceded
	From time to time the Company reduces the risk of losses on business written by reinsuring certain risks and exposures with other reinsurers. The Company remains liable to the extent that any retrocessionaire fails to meet its obligations and to the extent that the Company does not hold sufficient security for their unpaid obligations. Ceded premiums are written during the period in which the risks incept and are expensed over the contract period in proportion to the period of risk covered. Unearned premiums ceded consist of the unexpired portion of reinsurance ceded.
	Deferred acquisition costs
	Acquisition costs consist of commissions, brokerage and excise taxes that are related directly to the successful acquisition of new or renewal reinsurance contracts. These costs are deferred and amortized over the period in which the related premiums are earned. The Company evaluates the recoverability of deferred acquisition costs by determining if the sum of future earned premiums and anticipated investment income is greater than expected future loss and loss adjustment expenses and acquisition costs. If a loss is probable on the unexpired portion of contracts in force, a premium deficiency loss is recognized. As of December 31, 2014, deferred acquisition costs are considered to be fully recoverable and no premium deficiency has been recorded.
	Acquisition costs also include profit commissions that are expensed when incurred. Profit commissions are calculated and accrued based on the expected loss experience for contracts and recorded when the current loss estimate indicates that a profit commission is probable under the contract terms.
	Loss and loss adjustment expense reserves
	The Company’s loss and loss adjustment expense reserves include case reserves and reserves for losses incurred but not yet reported (“IBNR reserves”). Case reserves are established for losses that have been reported, but not yet paid. IBNR reserves represent the estimated loss and loss adjustment expenses that have been incurred by insureds and reinsureds but not yet reported to the insurer or reinsurer, including unknown future developments on loss and loss adjustment expenses that are known to the insurer or reinsurer. IBNR reserves are established by management based on actuarially determined estimates of ultimate loss and loss adjustment expenses.
	Inherent in the estimate of ultimate loss and loss adjustment expenses are expected trends in claim severity and frequency and other factors that may vary significantly as claims are settled. Accordingly, ultimate loss and loss adjustment expenses may differ materially from the amounts recorded in the consolidated financial statements. These estimates are reviewed regularly and, as experience develops and new information becomes known, the reserves are adjusted as necessary. Such adjustments, if any, are recorded in the consolidated statements of income in the period in which they become known.
	Deposit liabilities
	Certain contracts do not transfer sufficient insurance risk and are accounted for using the deposit method of accounting. Using the deposit method of accounting, a deposit liability, rather than written premium, is initially recorded based upon the consideration received less any explicitly identified premiums or fees. In subsequent periods, the deposit liability is adjusted by calculating the effective yield on the deposit to reflect actual payments to date and future expected payments.
	Fair value measurement
	The Company determines the fair value of financial instruments in accordance with current accounting guidance, which defines fair value and establishes a three level fair value hierarchy based upon the transparency of inputs used in the valuation of an asset or liability. Fair value is defined as the price that the Company would receive to sell an asset or would pay to transfer a liability in an orderly transaction between market participants at the measurement date. The Company determines the estimated fair value of each individual security utilizing the highest level inputs available.
	The fair value of the Company’s assets and liabilities, which qualify as financial instruments, approximates the carrying amounts presented in the consolidated balance sheets.
	Investments
	The Company’s investments are classified as “trading securities” and are carried at fair value with changes in fair value included in earnings in the consolidated statements of income.
	The fair value of the Company’s investments are based on quoted market prices, or when such prices are not available, by reference to broker or underwriter bid indications, industry recognized pricing vendors, and/or internal pricing valuation techniques. Investment transactions are recorded on a trade date basis with balances pending settlement included in due to/from brokers in the consolidated balance sheets.
	Realized gains and losses are determined using cost calculated on a specific identification basis. Dividends are recorded on the ex-dividend date. Income and expense are recorded on the accrual basis including interest and premiums amortized and discounts accreted.
	Derivatives
	Underwriting
	The Catastrophe Reinsurer enters into certain contracts under which the potential loss payments are triggered exclusively by reference to a specified index, such as an industry loss. These contracts are considered derivatives. The Company records the fair value of these contracts in derivative liabilities, at fair value, in the consolidated balance sheet. Changes in the fair value of these contracts are recorded in net investment income in the consolidated statement of income.
	Investments
	Derivative instruments within our investment assets managed by our investment manager Third Point LLC, are recorded in the consolidated balance sheets at fair value, with changes in fair values and realized gains and losses recognised in net investment income in the consolidated statements of income.
	Derivatives serve as a key component of the Company’s investment strategy and are utilized primarily to structure the portfolio, or individual investments, and to economically match the investment objectives of the Company. The Company’s derivatives do not qualify as hedges for financial reporting purposes and are recorded in the consolidated balance sheets on a gross basis and not offset against any collateral pledged or received. Pursuant to the International Swaps and Derivatives Association (“ISDA”) master agreements, securities lending agreements and other derivatives agreements, the Company and its counterparties typically have the ability to net certain payments owed to each other in specified circumstances. In addition, in the event a party to one of the ISDA master agreements, securities lending agreements or other derivatives agreements defaults, or a transaction is otherwise subject to termination, the non-defaulting party generally has the right to set off against payments owed to the defaulting party or collateral held by the non defaulting party.
	The Company enters into derivative contracts to manage credit risk, interest rate risk, currency exchange risk, and other exposure risks. The Company uses derivatives in connection with its risk-management activities to economically hedge certain risks and to gain exposure to certain investments. The utilization of derivative contracts also allows for an efficient means by which to trade certain asset classes.
	Fair values of derivatives are determined by using quoted market prices, industry recognized pricing vendors, and counterparty quotes when available; otherwise fair values are based on pricing models that consider the time value of money, volatility, and the current market and contractual prices of underlying financial instruments.
	Embedded derivatives
	Certain of the Company’s deposit and reinsurance contracts contain interest crediting features that vary based on the net investment return on investments managed by Third Point LLC. These contractual features are considered embedded derivatives in accordance with U.S. GAAP. We include the estimated fair value of these embedded derivatives in the consolidated balance sheets with the host contract in order to reflect the expected settlement of these features with the host contract. Prior to 2014, the changes in estimated fair value of these embedded derivatives were recorded in net investment income. As these embedded derivatives have become more prominent, the presentation has been modified and changes in the estimated fair value of embedded derivatives are now recorded in other expenses in the consolidated statements of income. In addition, fixed interest crediting features on these contracts that were recorded in net investment income are now classified in other expenses in the consolidated statements of income. As a result, investment expense of $4.9 million and $0.4 million that was previously reported in net investment income for the years ended December 31, 2013 and 2012, respectively, is now being reported in other expenses to conform to the current year presentation.
	Share-based compensation
	The Company accounts for its share-based compensation transactions using the fair value of the award at the grant date. Determining the fair value of share purchase options at the grant date requires estimation and judgment. The Company uses an option-pricing model (Black-Scholes) to calculate the fair value of share purchase options.
	For share purchase options or restricted share awards granted that contain both a service and performance condition, the Company recognizes share compensation expense only for the portion of the options or restricted share awards that are considered probable of vesting. Share compensation for share purchase options or restricted share awards considered probable of vesting is expensed over the service (vesting) period on a graded vesting basis. The probability of share purchase options or restricted share awards vesting is evaluated at each reporting period.  When the share purchase options or restricted share awards are considered probable of vesting, the Company records a true up of share compensation expense from the grant date (service inception date) to the current reporting period end based on the fair value of the options or restricted share awards at the grant date.
	The Company measures grant date fair value for restricted share awards, with a service condition only, based on the price of its common shares at the grant date and the expense is recognised on a straight-line basis over the vesting period.
	Warrants
	The Company accounts for warrant contracts issued to certain of its founding investors (“Founders”) in conjunction with the initial capitalization of the Company by using either the physical settlement or net-share settlement methods. The fair value of these warrants was recorded in equity as additional paid-in capital. The fair value of warrants issued are estimated on the grant date using the Black-Scholes option-pricing model.
	The Company accounts for certain warrant contracts issued to an advisor, where services have been received by the Company, in part, in exchange for equity instruments, based on the fair value of such services. The associated cost of these warrants has been recorded as capital raise costs and is included in additional paid in capital in the consolidated statements of shareholders’ equity.
	Offering costs
	Equity
	Offering costs incurred in connection with the IPO, which included underwriters’ fees, legal and accounting fees, printing and other fees were deducted from the gross proceeds of the offering. The proceeds from the issuance of shares net of offering costs is included in additional paid in capital in the consolidated statements of shareholders’ equity.
	Debt
	Costs incurred in issuing debt, which includes underwriters’ fees, legal and accounting fees, printing and other fees are capitalized and amortized over the term of the debt. The amortization of these costs is included in interest expense in the consolidated statements of income. As of December 31, 2014, the Company had capitalized $0.6 million of costs associated with the February 2015 debt issuance.
	Foreign currency transactions
	The Company’s functional currency is the U.S. dollar. Transactions in foreign currencies are recorded in U.S. dollars at the exchange rate in effect on the transaction date. Monetary assets and liabilities in foreign currencies are remeasured at the exchange rates in effect at the reporting date and foreign exchange gains and losses are included in the consolidated statements of income.
	Income taxes and uncertain tax positions
	Under current Bermuda law, the Company and its Bermuda subsidiaries are not subject to any income or capital gains taxes. In the event that such taxes are imposed, the Company and its Bermuda subsidiaries would be exempted from any such taxes until March 2035 under the Tax Assurance Certificates issued to such entities pursuant to the Bermuda Exempted Undertakings Tax Protection Act of 1966, as amended.
	The Company has an operating subsidiary in the United Kingdom, TPRUK, which is subject to relevant taxes in that jurisdiction.  On July 17, 2013, the United Kingdom government passed the Finance Act 2013, which reduced the corporate income tax rate from 23% to 21% (effective April 1, 2014) and provided for a further reduction in the corporate income tax rate from 21% to 20% (effective April 1, 2015). For the year ended December 31, 2014, the Company recorded $0.02 million for income taxes relating to TPRUK.
	The Company is subject to withholding tax obligations related to dividends, capital gains and interest on certain investments. Prior to the second quarter of 2014, these withholding tax obligations were recorded as deductions to net investment income. As these withholding tax obligations have increased, the Company began presenting the relevant amounts in income tax expense in the consolidated statements of income. As a result, withholding taxes of $3.0 million have been recorded in income tax expense for the year ended December 31, 2014. Withholding taxes of $1.1 million and $1.8 million were previously recorded as deductions to net investment income for the years ended December 31, 2013 and 2012, respectively.
	As of and for the year ended December 31, 2014, the Company had recorded a $2.6 million provision for uncertain tax positions related to investment transactions in certain foreign jurisdictions.
	Non-controlling interests
	The Company consolidates the results of entities in which it has a controlling financial interest. The Company records the portion of shareholders’ equity attributable to non-controlling interests as a separate line within shareholders’ equity in the consolidated balance sheets. The Company records the portion of income attributable to non-controlling interests as a separate line within the consolidated statements of income.
	Earnings per share
	Basic earnings per share is based on the weighted average number of common shares and participating securities outstanding during the period. The weighted average number of common shares excludes any dilutive effect of outstanding warrants, options and convertible securities such as unvested restricted shares. Diluted earnings per share is based on the weighted average number of common shares and share equivalents including any dilutive effects of warrants, options and other awards under share plans and are determined using the treasury stock method. U.S. GAAP requires that unvested share awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid (referred to as “participating securities”), be included in the number of shares outstanding for both basic and diluted earnings per share calculations. The Company treats certain of its unvested restricted shares as participating securities. In the event of a net loss, the participating securities are excluded from the calculation of both basic and diluted loss per share.
	Leases
	Leases in which substantially all of the risks and rewards of ownership are retained by the lessor are classified as operating leases. Payments made under operating leases (net of any incentives received from the lessor) are recognised in the consolidated statements of income on a straight-line basis over the term of the lease.
	Comprehensive income
The Company has no comprehensive income other than net income disclosed in the consolidated statements of income.
Segment information
Under U.S. GAAP, operating segments are based on the internal information that management uses for allocating resources and assessing performance of the Company. The Company reports two operating segments – Property and Casualty Reinsurance and Catastrophe Risk Management. The Company also has a corporate function that includes the Company’s investment results and certain general and administrative expenses related to its corporate activities.
Prior year changes in the presentation of consolidated statements of cash flows
The Company had previously excluded income attributable to non-controlling interests from cash flows provided by operating activities and included these amounts in cash flows used in investing activities and provided by financing activities. For the year ended December 31, 2014, the Company began including income from non-controlling interests in cash flows provided by operating activities. In addition, cash flows related to the non-controlling interest in investment affiliate were previously included in net cash used in investing activities and is now being included in net cash provided by financing activities. Lastly, we are now including the interest expense on deposit liabilities and change in fair value of embedded derivatives in deposit liability contracts as non-cash adjustments in operating activities.  These changes did not impact the consolidated balance sheet or consolidated income statement for the prior periods.  The Company has corrected the presentation of its consolidated statements of cash flows for the prior year periods.
Recently issued accounting standards
Issued and effective as of December 31, 2014
In January 2013, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities (ASU 2013-01). The objective of ASU 2013-01 is to address implementation issues about the scope of ASU 2011-11, Disclosures about Offsetting Assets and Liabilities. The amendments clarify that the scope of ASU 2011-11 applies to derivatives, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions. Entities with other types of financial assets and financial liabilities subject to a master netting arrangement or similar agreement also are affected because these amendments make them no longer subject to the disclosure requirements in ASU 2011-11. ASU 2013-01 is effective for interim and annual periods beginning on or after January 1, 2013. The Company adopted ASU 2013-01 effective with its IPO and has included the required disclosures in Note 8 of the notes to the consolidated financial statements.
In February 2013, the FASB issued Accounting Standards Update No. 2013-02, Comprehensive Income (ASU 2013-02). The objective of ASU 2013-02 is to improve the reporting of reclassifications out of other comprehensive income. ASU 2013-02 is effective for periods subsequent to December 15, 2012. The adoption of this guidance had no impact on the Company’s consolidated financial statements.
In June 2013, the FASB issued Accounting Standards Update No. 2013-08, Financial Services - Investment Companies - Amendments to the Scope, Measurement, and Disclosure Requirements (ASU 2013-08). The amendments in this update change the assessment of whether an entity is an investment company by developing a new two-tiered approach for that assessment, which requires an entity to possess certain fundamental characteristics while allowing judgment in assessing other typical characteristics. The new approach requires an entity to assess all of the characteristics of an investment company and consider its purpose and design to determine whether it is an investment company. ASU 2013-08 is effective prospectively for periods subsequent to December 15, 2013. Early adoption was prohibited. The Company adopted ASU 2013-08 in the first quarter of 2014, and the adoption of this guidance did not have a material impact on the Company’s consolidated financial statements.
Issued but not yet effective as of December 31, 2014
In April 2014, the FASB issued Accounting Standards Update 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (ASU 2014-08). ASU 2014-08 changes the requirements for reporting discontinued operations, such that a disposal of a component of the Company’s operations is required to be reported as discontinued operations if the disposal represents a strategic shift that has, or will have, a major effect on the Company’s operations and financial results. ASU 2014-08 is effective for all disposals that occur after January 1, 2015, with early adoption permitted. The Company does not expect this new pronouncement to have a material impact on the Company’s consolidated financial statements.
In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (ASU 2014-09). ASU 2014-09 provides a framework, through a five-step process, for recognizing revenue from customers, improves comparability and consistency of recognizing revenue across entities, industries, jurisdictions and capital markets, and requires enhanced disclosures. Certain contracts with customers are specifically excluded from the scope of ASU 2014-09, including amongst others, insurance contracts accounted for under Accounting Standard Codification 944, Financial Services - Insurance. ASU 2014-09 is effective on January 1, 2017 with retrospective adoption required for the comparative periods. 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 financial statements.
In June 2014, the FASB issued Accounting Standards Update No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to Maturity Transactions, Repurchase Financings, and Disclosures (ASU 2014-11). ASU 2014-11 amends the accounting guidance for “repo-to-maturity” transactions and repurchase agreements executed as repurchase financings. In addition, the new standard requires a transferor to disclose more information about certain transactions, including those in which it retains substantially all of the exposure to the economic returns of the underlying transferred asset over the transaction’s term. For repurchase agreements and securities lending agreements accounted for as secured borrowings as of a reporting date, the new standard requires obligors (transferors of collateral) to disaggregate the related gross obligation by class of collateral pledged, and to disclose the remaining contractual maturity of the agreements, and to discuss the potential risks of these arrangements and related collateral pledged, including the risks stemming from a decline in the value of the pledged collateral and how such risks are managed. Additionally, as a result of the new accounting guidance, repo-to-maturity transactions will be reported as secured borrowings. Transferors will also no longer apply the current “linked” accounting model to repurchase agreements executed contemporaneously with the initial transfer of the underlying financial asset with the same counterparty. ASU 2014-11 is effective prospectively for periods subsequent to December 15, 2014. 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 financial statements.
In August 2014, the FASB issued Accounting Standards Update 2014-15, Presentation of Financial Statements- Going Concern (ASU 2014-15). ASU 2014-15 requires management to evaluate, for each annual and interim reporting period, whether there are conditions or events that raise substantial doubt about an entity’s ability to continue as a going concern within one year after the date that the financial statements are issued. If conditions or events raise substantial doubt about an entity’s ability to continue as a going concern, the entity will be required to disclose information that enables the users of the financial statements to understand the principal conditions or events, management’s evaluation of the significance of those events or conditions and management’s plans that alleviate substantial doubt about the entity’s ability to continue as a going concern. ASU 2014-1 becomes effective for the annual period ending after December 15, 2016. The Company does not expect this new guidance to have a material impact on the Company’s consolidated financial statements.
In February 2015, the FASB issued Accounting Standard Update 2015-02, Consolidation (Topic 810) Amendments to the Consolidation Analysis (ASU 2015-02). ASU 2015-02 requires management to evaluate whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities. ASU- 2015-02 eliminates the presumption that a general partner should consolidate a limited partnership and affects the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships. ASU 2015-02 also provides a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. The amendments in this Update are effective for interim and annual periods beginning after December 15, 2015. Early adoption is permitted. The Company is currently evaluating the impact of this guidance on the Company’s consolidated financial statements.

Restricted_cash_and_cash_equiv

Restricted cash and cash equivalents	12 Months Ended
	Dec. 31, 2014
Cash and Cash Equivalents [Abstract]
Restricted cash and cash equivalents	Restricted cash and cash equivalents as of December 31, 2014 and 2013 consisted of the following:
		December 31,		December 31,
		2014		2013
		($ in thousands)
	Restricted cash securing collateralized reinsurance contracts written by the Catastrophe Reinsurer (1)	$	108,544	$	93,014
	Restricted cash securing letter of credit facilities (2)	218,963		100,563
	Restricted cash securing other reinsurance contracts (3)	89,800		—
		$	417,307	$	193,577
	(1) Restricted cash securing collateralized reinsurance contracts written by the Catastrophe Reinsurer cannot be released until the contract’s exposure has expired and the cedant agrees to release the collateral. All remaining exposures being collateralized by these amounts are expected to expire by July 2015, upon which, the restricted cash will be released.
	(2) Restricted cash securing letter of credit facilities pertain to letters of credit issued to clients and cash securing these obligations which the Company will not be released from until the underlying reserves have been settled. The time period for which the Company expects these letters of credit to be in place varies from contract to contract but, can last several years.
	(3) Restricted cash securing other reinsurance contracts pertain to trust accounts securing the Company’s contractual obligation under certain reinsurance contracts which the Company will not be released from until all underlying risks have expired or have been settled. The time period for which the Company expects these trust accounts to be in place varies from contract to contract but, can last several years.

Reinsurance_premiums_ceded

Reinsurance premiums ceded	12 Months Ended
	Dec. 31, 2014
Reinsurance Disclosures [Abstract]
Reinsurance premiums ceded	The Company from time to time purchases retrocessional coverage for one or more of the following reasons: to manage its overall exposure, to reduce its net liability on individual risks, to obtain additional underwriting capacity and to balance its underwriting portfolio. Additionally, retrocession can be used as a mechanism to share the risks and rewards of business written and therefore can be used as a tool to align the Company’s interests with those of its counterparties. The Company currently has coverage that provides for recovery of a portion of loss and loss adjustment expenses incurred on one crop contract written in 2013 and one new contract entered into in the third quarter of 2014 (2012 - none). Loss and loss adjustment expenses recoverable from the retrocessionaires are recorded as assets. For the year ended December 31, 2014, loss and loss adjustment expenses incurred and reported on the consolidated statements of income are net of loss and loss expenses recovered of $0.4 million (2013 - $9.3 million and 2012 - nil). Retrocession contracts do not relieve the Company from its obligations to the insureds. Failure of retrocessionaires to honor their obligations could result in losses to the Company. As of December 31, 2014 and 2013, the Company had loss and loss adjustment expenses recoverable of $0.8 million and $9.3 million, respectively, with one retrocessionaire who was rated “A (Excellent)” by A.M. Best Company. The Company regularly evaluates the financial condition of its retrocessionaires to assess the ability of the retrocessionaires to honor their obligations.

Investments

Investments	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Investments	The Company’s investments are managed by its investment manager, Third Point LLC (“Third Point LLC” or the “Investment Manager”), under a long-term investment management contract. The Company directly owns the investments that are held in a separate account and managed by Third Point LLC. The following is a summary of the separate account managed by Third Point LLC:
		December 31,			December 31,
		2014			2013
	Assets	($ in thousands)
	Total investments in securities and commodities	$	1,828,761		$	1,460,864
	Cash and cash equivalents	3			869
	Restricted cash and cash equivalents (1)	308,763			100,563
	Due from brokers	58,241			98,386
	Securities purchased under an agreement to sell	29,852			38,147
	Derivative assets	21,130			39,045
	Interest and dividends receivable	2,590			2,604
	Other assets	325			933
	Total assets	$	2,249,665		$	1,741,411
	Liabilities and non-controlling interest
	Accounts payable and accrued expenses	$	464		$	1,759
	Securities sold, not yet purchased, at fair value	82,485			56,056
	Due to brokers	312,609			44,870
	Derivative liabilities	10,985			8,819
	Interest and dividends payable	697			748
	Non-controlling interest	40,242			69,717
	Total liabilities and non-controlling interest	447,482			181,969
	Total net investments managed by Third Point LLC	$	1,802,183		$	1,559,442
	-1	Includes amounts advanced to Third Point Re to fund collateral held in trust accounts.
	The Company’s Investment Manager has a formal valuation policy that sets forth the pricing methodology for investments to be used in determining the fair value of each security in the Company’s portfolio. The valuation policy is updated and approved at least on an annual basis by Third Point LLC’s valuation committee (the “Committee”), which is comprised of officers and employees who are senior business management personnel of Third Point LLC. The Committee meets monthly. The Committee’s role is to review and verify the propriety and consistency of the valuation methodology to determine the fair value of investments. The Committee also reviews any due diligence performed and approves any changes to current or potential external pricing vendors.
	Investments are carried at fair value. The fair values of investments are estimated using prices obtained from either third-party pricing services or broker quotes. The methodology for valuation is generally determined based on the investment’s asset class per the Company’s Investment Manager’s valuation policy. For investments that the Company is unable to obtain fair values from a pricing service or broker, fair values are estimated using information obtained from the Company’s Investment Manager.
	Securities and commodities listed on a national securities or commodities exchange or quoted on NASDAQ are valued at their last sales price as of the last business day of the period. Listed securities with no reported sales on such date and over-the-counter (“OTC”) securities are valued at their last closing bid price if held long by the Company, and last closing ask price if held short by the Company. As of December 31, 2014, securities valued at $434.4 million (December 31, 2013 - $483.2 million), representing 23.5% (December 31, 2013 – 33.1%) of investments in securities and commodities and derivative assets, and $1.3 million (December 31, 2013 - $41.0 million), representing 1.4% (December 31, 2013 – 73.1%) of securities sold, not yet purchased and derivative liabilities, are valued based on broker quotes or other quoted market prices for similar securities.
	Private securities are not registered for public sale and are carried at an estimated fair value at the end of the period, as determined by the Company’s Investment Manager. Valuation techniques used by the Company’s Investment Manager may include market approach, last transaction analysis, liquidation analysis and/or using discounted cash flow models where the significant inputs could include but are not limited to additional rounds of equity financing, financial metrics such as revenue multiples or price-earnings ratio, discount rates and other factors. In addition, the Company or the Company’s Investment Manager may employ third party valuation firms to conduct separate valuations of such private securities. The third party valuation firms provide the Company or the Company’s Investment Manager with a written report documenting their recommended valuation as of the determination date for the specified investments.
	As of December 31, 2014, the Company had $2.3 million (December 31, 2013 - $3.3 million) of private securities fair valued by a third party valuation firm using information obtained from the Company’s Investment Manager. Private securities represented less than 1% of total investments in securities, commodities and derivative assets. The actual value at which these securities could actually be sold or settled with a willing buyer or seller may differ from the Company’s estimated fair values depending on a number of factors including, but not limited to, current and future economic conditions, the quantity sold or settled, the presence of an active market and the availability of a willing buyer or seller.
	The Company’s free standing derivatives are recorded at fair value, and are included in the consolidated balance sheets in derivative assets and derivative liabilities. The Company values exchange-traded derivatives at their last sales price on the exchange where it is primarily traded. OTC derivatives, which include swap, option, swaption, forward, future and contract for differences, are valued by third party sources when available; otherwise, fair values are obtained from broker quotes that are based on pricing models that consider the time value of money, volatility, and the current market and contractual prices of the underlying financial instruments.
	As an extension of its underwriting activities, the Catastrophe Reinsurer may sell derivative instruments that provide reinsurance-like protection to third parties for specific loss events associated with certain lines of business.  These derivatives are recorded in the consolidated balance sheets at fair value, with changes in the fair value of these derivatives recorded in net investment income in the consolidated statements of income. These contracts are valued on the basis of models developed by the Company, which approximates fair value.
	During 2014, the Catastrophe Reinsurer purchased a catastrophe bond. This catastrophe bond is recorded in the consolidated balance sheet at fair value, with changes in the fair value recorded in net investment income in the consolidated statements of income. This catastrophe bond is valued using quotes from broker-dealers or other market makers.
	The Company also has derivatives embedded in non-derivative host contracts that are required to be separated from the host contracts and accounted for at fair value with changes in fair value of the embedded derivative reported in net investment income. The Company’s embedded derivatives relate to interest crediting features in certain reinsurance and deposit contracts that vary based on the returns on our investments managed by Third Point LLC. The Company determines the fair value of the embedded derivatives using models developed by the Company, which approximates fair value. See discussion of accounting policy for embedded derivatives in Note 2 for additional information.
	The Company’s holdings in asset-backed securities (“ABS”) are substantially invested in residential mortgage-backed securities (“RMBS”). The balance of the ABS positions was held in commercial mortgage-backed securities, collateralized debt obligations and student loan asset-backed securities. These investments are valued using broker quotes or a recognised third-party pricing vendor. All of these classes of ABS are sensitive to changes in interest rates and any resulting change in the rate at which borrowers sell their properties, refinance, or otherwise pre-pay their loans. As an investor in these classes of ABS, the Company may be exposed to the credit risk of underlying borrowers not being able to make timely payments on loans or the likelihood of borrowers defaulting on their loans. In addition, the Company may be exposed to significant market and liquidity risks.
	The Company values its investments in limited partnerships at fair value, which is estimated based on the Company’s share of the net asset value of the limited partnerships as provided by the investment managers of the underlying investment funds. The resulting net gains or net losses are reflected in the consolidated statements of income.
	On December 18, 2014, we entered into a subscription agreement with the Kiskadee Diversified Fund Ltd. (“Kiskadee Fund”) to invest up to $25.0 million in Hiscox’s separately managed insurance-linked securities platform, Kiskadee Re Ltd.  The Kiskadee Fund is a fund vehicle managed by Hiscox.  The Kiskadee Fund invests in property catastrophe exposures through collateralized reinsurance transactions and other insurance-linked investments.  On January 2, 2015, we funded $5.0 million of this commitment.  The remaining $20.0 million commitment is due to be funded on June 1, 2015. This investment will be recorded on the consolidated balance sheet at fair value, which is estimated based on the Company’s share of the net asset value in the Kiskadee Fund, as provided by the investment manager. The resulting net gains or net losses are reflected in the consolidated statements of income.
	The Company performs several processes to ascertain the reasonableness of the valuation of all of the Company’s investments comprising the Company’s investment portfolio, including securities that are categorized as Level 2 and Level 3 within the fair value hierarchy. These processes include i) obtaining and reviewing weekly and monthly investment portfolio reports from the Investment Manager, ii) obtaining and reviewing monthly Net Asset Value (“NAV”) and investment return reports received directly from the Company’s third-party fund administrator, which are compared to the reports noted in (i), and iii) monthly update discussions with the Company’s Investment Manager regarding the investment portfolio, including, their process for reviewing and validating pricing obtained from third party service providers.
	For the years ended December 31, 2014, 2013 and 2012, there were no changes in the valuation techniques as it relates to the above.
	Monetary assets and liabilities denominated in foreign currencies are translated at the closing rates of exchange. Transactions during the period are translated at the rate of exchange prevailing on the date of the transaction. The Company does not isolate that portion of the net investment income resulting from changes in foreign exchange rates on investments, dividends and interest from the fluctuations arising from changes in fair values of securities and derivatives held. Periodic payments received or paid on swap agreements are recorded as realized gain or loss on investment transactions. Such fluctuations are included within net investment income in the consolidated statements of income (loss).
	U.S. GAAP disclosure requirements establish a framework for measuring fair value, including a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. The three-level hierarchy of inputs is summarized below:
	•	Level 1 – Quoted prices available in active markets/exchanges for identical investments as of the reporting date.
	•	Level 2 – Observable inputs to the valuation methodology other than unadjusted quoted market prices for identical assets or liabilities in active markets. Level 2 inputs include, but are not limited to, prices quoted for similar assets or liabilities in active markets/exchanges, prices quoted for identical or similar assets or liabilities in markets that are not active and fair values determined through the use of models or other valuation methodologies.
	•	Level 3 – Pricing inputs unobservable for the investment and include activities where there is little, if any, market activity for the investment. The inputs applied in the determination of fair value require significant management judgment and estimation.
	Observable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources other than those of the reporting entity. Unobservable inputs are inputs that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances.
	In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment.
	The key inputs for corporate, government and sovereign bond valuation are coupon frequency, coupon rate and underlying bond spread. The key inputs for asset-backed securities are yield, probability of default, loss severity and prepayment.
	Key inputs for over-the-counter (“OTC”) valuations vary based on the type of underlying security on which the contract was written:
	•	The key inputs for most OTC option contracts include notional, strike price, maturity, payout structure, current foreign exchange forward and spot rates, current market price of underlying and volatility of underlying.
	•	The key inputs for most forward contracts include notional, maturity, forward rate, spot rate, various interest rate curves and discount factor.
	•	The key inputs for swap valuation will vary based on the type of underlying on which the contract was written. Generally, the key inputs for most swap contracts include notional, swap period, fixed rate, credit or interest rate curves, current market or spot price of the underlying and the volatility of the underlying.
	The following tables present the Company’s investments, categorized by the level of the fair value hierarchy as of December 31, 2014 and 2013:
		31-Dec-14
		Quoted prices in active markets			Significant other observable inputs			Significant unobservable inputs		Total
		(Level 1)			(Level 2)			(Level 3)
	Assets	($ in thousands)
	Equity securities	$	1,158,428		$	15,207		$	—	$	1,173,635
	Private common equity securities	—			2,718			1,443		4,161
	Total equities	1,158,428			17,925			1,443		1,177,796
	Asset-backed securities	—			395,514			4,720		400,234
	Bank debts	—			2,395			—		2,395
	Corporate bonds	—			56,795			3,799		60,594
	Municipal bonds	—			3,094			—		3,094
	Sovereign debt	—			103,331			—		103,331
	Total debt securities	—			561,129			8,519		569,648
	Investments in limited partnerships	—			55,756			6,354		62,110
Options	3,205			3,791			—		6,996
Rights and warrants	1,843			—			—		1,843
Trade claims	—			10,368			—		10,368
Catastrophe bond	—			2,077			—		2,077
Total other investments	5,048			71,992			6,354		83,394
Derivative assets (free standing)	380			20,750			—		21,130
Total assets	$	1,163,856		$	671,796		$	16,316	$	1,851,968
Liabilities
Equity securities	$	33,222		$	—		$	—	$	33,222
Sovereign debt	—			29,350			—		29,350
Corporate bonds	—			13,312			—		13,312
Options	3,755			2,846			—		6,601
Total securities sold, not yet purchased	36,977			45,508			—		82,485
Derivative liabilities (free standing)	505			9,548			962		11,015
Derivative liabilities (embedded)	—			—			9,289		9,289
Total liabilities	$	37,482		$	55,056		$	10,251	$	102,789
	As of December 31, 2013
	Quoted prices in active markets			Significant other observable inputs			Significant unobservable inputs		Total
	(Level 1)			(Level 2)			(Level 3)
Assets	($ in thousands)
Equity securities	$	839,903		$	17,914		$	—	$	857,817
Private common equity securities	—			94,282			2,012		96,294
Total equities	839,903			112,196			2,012		954,111
Asset-backed securities	—			325,133			400		325,533
Bank debts	—			8,017			—		8,017
Corporate bonds	—			82,139			4,610		86,749
Municipal bonds	—			10,486			—		10,486
Sovereign debt	—			10,639			—		10,639
Total debt securities	—			436,414			5,010		441,424
Investments in limited partnerships	—			29,286			5,292		34,578
Options	6,284			6,785			—		13,069
Rights and warrants	1			—			—		1
Trade claims	—			17,681			—		17,681
Total other investments	6,285			53,752			5,292		65,329
Derivative assets	321			38,724			—		39,045
Total assets	$	846,509		$	641,086		$	12,314	$	1,499,909
Liabilities
Equity securities	$	5,207		$	—		$	—	$	5,207
Sovereign debt	—			37,592			—		37,592
Corporate bonds	—			3,372			—		3,372
Options	4,714			5,171			—		9,885
Total securities sold, not yet purchased	9,921			46,135			—		56,056
Derivative liabilities (free standing)	441			8,378			—		8,819
Derivative liabilities (embedded)	—			—			4,430		4,430
Total liabilities	$	10,362		$	54,513		$	4,430	$	69,305
During the year ended December 31, 2014, the Company reclassified $86.6 million of private common equity securities from Level 2 to Level 1 equity securities. This reclassification is the result of the issuer’s IPO, with quoted prices having become available in an active market as of the reporting date. During the years ended December 31, 2013 and 2012, the Company made no significant reclassifications of assets or liabilities between Levels 1 and 2.
The following table presents the reconciliation for all investments measured at fair value using significant unobservable inputs (Level 3) for the years ended December 31, 2014 and 2013:
	January 1,			Transfers in to (out of) Level 3			Purchases		Sales			Realized and Unrealized Gains(Losses) (1)			December 31,
	2014														2014
	($ in thousands)
Assets
Asset-backed securities	$	400		$	2,062		$	5,257	$	(2,898	)	$	(101	)	$	4,720
Corporate bonds	4,610			—			822		(776		)	(857		)	3,799
Private common equity securities	2,012			393			—		—			(962		)	1,443
Investments in limited partnerships	5,292			—			2,916		—			(1,854		)	6,354
Total assets	$	12,314		$	2,455		$	8,995	$	(3,674	)	$	(3,774	)	$	16,316
Liabilities
Derivative liabilities (free standing)	$	—		$	—		$	—	$	(1,135	)	$	173		$	(962	)
Derivative liabilities (embedded)	(4,430		)	—			—		(2,871		)	(1,988		)	(9,289		)
Total liabilities	$	(4,430	)	$	—		$	—	$	(4,006	)	$	(1,815	)	$	(10,251	)
	January 1,			Transfers in to (out of) Level 3			Purchases		Sales			Realized and Unrealized Gains(Losses) (1)			December 31,
	2013														2013
	($ in thousands)
Assets
Asset-backed securities	$	—		$	133		$	552	$	(12	)	$	(273	)	$	400
Bank debt	54			(54		)	—		—			—			—
Corporate bonds	1,046			—			4,094		(1,392		)	862			4,610
Private common equity securities	2,757			(2,757		)	2,031		—			(19		)	2,012
Investments in limited partnerships	—			—			4,690		(342		)	944			5,292
Total assets	$	3,857		$	(2,678	)	$	11,367	$	(1,746	)	$	1,514		$	12,314
Liabilities
Derivative liabilities (free standing)	$	—		$	—		$	—	$	(4,335	)	$	4,335		$	—
Derivative liabilities (embedded)	(2,510		)	—			—		(1,460		)	(460		)	(4,430		)
Total liabilities	$	(2,510	)	$	—		$	—	$	(5,795	)	$	3,875		$	(4,430	)
(1) Total change in realized and unrealized gain (loss) recorded on Level 3 financial instruments are included in net investment income in the consolidated statements of income (loss).
Total unrealized gains related to fair value assets using significant unobservable inputs (Level 3) for the year ended December 31, 2014 was $(7.4) million (2013 - $1.0 million and 2012 - $(0.7) million).
For assets and liabilities that were transferred into Level 3 during the period, gains (losses) are presented as if the assets or liabilities had been transferred into Level 3 at the beginning of the period; similarly, for assets and liabilities that were transferred out of Level 3 during the year, gains (losses) are presented as if the assets or liabilities had been transferred out of Level 3 at the beginning of the year. The Company held no Level 3 investments where quantitative unobservable inputs are produced by the Company itself when estimating fair value.

Securities_purchased_under_an_

Securities purchased under an agreement to sell	12 Months Ended
	Dec. 31, 2014
Securities Purchased under Agreements to Resell [Abstract]
Securities purchased under an agreement to sell	The Company may enter into repurchase and reverse repurchase agreements with financial institutions in which the financial institution agrees to resell or repurchase and the Company agrees to repurchase or resell such securities at a mutually agreed price upon maturity. As of December 31, 2014, the Company held outstanding reverse repurchase agreements valued at $29.9 million (December 31, 2013 - $38.1 million). As of December 31, 2014, the total value of securities and cash received as collateral by the Company was $29.6 million (December 31, 2013 - $37.6 million). As the Company held only reverse repurchase agreements as of December 31, 2014 and 2013, these positions are not impacted by master netting agreements. Interest expense and income related to these transactions are included in interest payable and receivable in the consolidated balance sheets. For the year ended December 31, 2014, foreign currency loss of $4.1 million (2013 – gains of $1.9 million and 2012 - gains of $0.6 million) on reverse repurchase agreements are included in net investment income in the consolidated statements of income. Generally, reverse repurchase agreements mature within 30 to 90 days.

Due_fromto_brokers

Due from/to brokers	12 Months Ended
	Dec. 31, 2014
Due to and from Broker-Dealers and Clearing Organizations [Abstract]
Due from/to brokers	The Company holds substantially all of its investments through its prime brokers pursuant to agreements between the Company and each prime broker. The brokerage arrangements differ from broker to broker, but generally cash and investments in securities and commodities balances are available as collateral against investments in securities sold, not yet purchased and derivative positions, if required.
	Due from/to brokers include cash balances maintained with the Company’s prime brokers, margin debt balances, receivables and payables from unsettled trades and proceeds from securities sold, not yet purchased. In addition, due from and to brokers includes cash collateral received and posted from OTC and repurchase agreement counterparties. As of December 31, 2014, the Company’s due from/to brokers includes a total non-U.S. currency balance of $1.1 million (December 31, 2013 - payable of $268.5 million).
	The Company uses prime brokerage arrangements to provide cash collateral for its letter of credit facilities and to fund trust accounts securing certain reinsurance contracts.  As of December 31, 2014, the Company had $308.8 million of restricted cash securing letter of credit facilities and certain reinsurance contracts. Margin debt at the brokers primarily relates to borrowings to fund collateral arrangements. These amounts are callable upon demand by the prime broker, are secured by assets of the Company held by the prime broker and incur interest based on the Company’s negotiated rates. The interest expense incurred is reflected in net investment income in the consolidated statements of income.

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	The following tables identify the listing currency, fair value and notional amounts of derivative instruments included in the consolidated balance sheets, categorized by primary underlying risk. Balances are presented on a gross basis.
		As of December 31, 2014
		Listing currency (1)		Fair Value				Notional Amounts (2)
	Derivative Assets by Primary Underlying Risk	($ in thousands)
	Commodity Price
	Commodity Future Options - Sold	USD		$	269			$	25,168
	Credit
	Credit Default Swaps - Protection Purchased	USD		9,456				89,772
	Credit Default Swaps - Protection Sold	USD		205				2,084
	Equity Price
	Contracts for Differences - Long Contracts	USD		263				3,080
	Contracts for Differences - Short Contracts	AUD/EUR		186				6,428
	Total Return Swaps - Long Contracts	USD		43				1,874
	Total Return Swaps - Short Contracts	USD		34				9,763
	Interest Rates
	Commodity Futures - Short Contracts	USD		78				186,280
	Foreign Currency Exchange Rates
	Foreign Currency Forward	CAD/EUR/GBP/JPY		4,241				228,416
	Foreign Currency Options - Purchased	EUR/JPY/KRW/SAR		6,355				283,439
	Total Derivative Assets			$	21,130			$	836,304
		Listing currency (1)		Fair Value				Notional Amounts (2)
	Derivative Liabilities by Primary Underlying Risk	($ in thousands)
	Commodity Price
	Commodity Future Options - Purchased	USD		285				12,012
	Credit
	Credit Default Swaps - Protection Purchased	USD		3,230				49,465
	Credit Default Swaps - Protection Sold	USD		1,319				5,142
	Equity Price
	Contracts for Differences - Long Contracts	EUR/GBP/USD		1,404				48,152
	Contracts for Differences - Short Contracts	AUD/NOK		130				3,070
	Total Return Swaps - Long Contracts	USD		590				11,233
	Interest Rates
	Commodity Futures - Short Contracts	USD		220				467,956
	Treasury Futures - Short Contracts	USD		280				10,119
	Foreign Currency Exchange Rates
	Foreign Currency Options - Sold	EUR/JPY/KRW		3,527				144,257
	Catastrophe Risk derivatives	USD		30				6,000
	Total Derivative Liabilities (free standing)			$	11,015			$	757,406
	Embedded derivative liabilities in reinsurance contracts (3)	USD		2,769				15,000
	Embedded derivative liabilities in deposit contracts (4)	USD		6,520				75,000
	Total Derivative Liabilities (embedded)			$	9,289			$	90,000
	(1) AUD =ustralian Dollar, CAD =anadian Dollar,  EUR =uro,  GBP =ritish Pound,  HKD =ong Kong Dollar, JPY =apanese Yen, KRW =outh Korean Won, NOK =orwegian Krone, SAR =audi Arabian Riyal, USD =S Dollar
	(2) The absolute notional exposure represents the Company’s derivative activity as of December 31, 2014, which is representative of the volume of derivatives held during the period.
	(3) The fair value of embedded derivatives in reinsurance contracts is included in reinsurance balances payable in the consolidated balance sheet.
	(4) The fair value of embedded derivatives in deposit contracts is included in deposit liabilities in the consolidated balance sheet.
		As of December 31, 2013
		Listing currency (1)		Fair Value				Notional Amounts (2)
	Derivative Assets by Primary Underlying Risk	($ in thousands)
	Commodity Price
	Commodity Future Options - Purchased	USD		$	256			$	12,325
	Credit
	Credit Default Swaps - Protection Purchased	USD		15,397				109,520
	Credit Default Swaps - Protection Sold	USD		1,157				9,557
	Equity Price
	Contracts for Differences - Long Contracts	CHF/EUR/GBP/USD		10,549				62,847
	Contracts for Differences - Short Contracts	NOK		67				2,758
	Total Return Swaps - Long Contracts	BRL/JPY/USD		2,950				68,044
	Total Return Swaps - Short Contracts	USD		3				290
	Interest Rates
	Bond Futures - Short Contracts	JPY		212				40,847
	Interest Rate Swaps	EUR		182				212,594
	Interest Rate Swaptions	EUR/JPY/USD		1,269				54,884
	Treasury Futures - Short Contracts	USD		108				6,544
	Foreign Currency Exchange Rates
Foreign Currency Forward	AUD/CAD/JPY/TRY		1,332				59,925
Foreign Currency Options - Purchased	USD		5,563				240,062
Total Derivative Assets			$	39,045			$	880,197
	Listing currency (1)		Fair Value				Notional Amounts (2)
Derivative Liabilities by Primary Underlying Risk	($ in thousands)
Commodity Price
Commodity Future Options - Sold	USD		$	148			$	35,484
Credit
Credit Default Swaps - Protection Purchased	EUR/USD		2,634				59,446
Credit Default Swaps - Protection Sold	USD		348				875
Equity Price
Contracts for Differences - Long Contracts	EUR		66				14,607
Contracts for Differences - Short Contracts	DKK		425				7,253
Total Return Swaps - Long Contracts	BRL/JPY/USD		1,385				24,807
Total Return Swaps - Short Contracts	USD		140				5,037
Index
Index Futures - Short Contracts	USD		441				8,888
Interest Rates
Interest Rate Swaps	EUR/USD		821				465,560
Interest Rate Swaptions	USD/JPY		174				99,587
Foreign Currency Exchange Rates
Foreign Currency Forward	EUR/GBP		709				189,030
Foreign Currency Options - Sold	USD		1,528				178,476
Total Derivative Liabilities			$	8,819			$	1,089,050
Embedded derivative liabilities in deposit contracts (3)	USD		4,430				75,000
Total Derivative Liabilities (embedded)			$	4,430			$	75,000
(1) USD =S dollar, JPY =apanese yen, EUR =uro, GBP =ritish pound, BRL =razilian real, NOK =orwegian krone, AUD =ustralian dollar, DKK =anish krone, CAD =anadian dollar, CHF =wiss Franc, TRY Turkish Lira
(2) The absolute notional exposure represents the Company’s derivative activity as of December 31, 2013, which is representative of the volume of derivatives held during the period.
(3) The fair value of embedded derivatives in deposit contracts is included in deposit liabilities in the consolidated balance sheet.
The following table sets forth, by major risk type, the Company’s realized and unrealized gains (losses) relating to derivative trading activities for the years ended December 31, 2014, 2013 and 2012. Realized and unrealized gains (losses) related to free standing derivatives are included in net investment income in the consolidated statements of income. Realized and unrealized gains (losses) related to embedded derivatives are included in other expenses in the consolidated statements of income.
	December 31, 2014								December 31, 2013						December 31, 2012
Primary Underlying Risk	Realized Gain (Loss)				Unrealized Gain (Loss)*				Realized Gain (Loss)			Unrealized Gain (Loss)*			Realized Gain (Loss)			Unrealized Gain (Loss)*
Commodity Price	($ in thousands)
Commodities Futures - Long Contracts	$	—			$	—			$	—		$	—		$	1,710		$	—
Commodity Future Options - Purchased	(470		)		(289		)		264			15			(17		)	(10		)
Commodity Future Options - Sold	364				101				(81		)	168			—			—
Credit
Credit Default Swaps - Protection Purchased	(5,627		)		1,018				4,243			(10,943		)	1,239			265
Credit Default Swaps - Protection Sold	1,362				(830		)		(4,845		)	10,690			—			(212		)
Equity Price
Contracts for Differences - Long Contracts	(1,869		)		(11,621		)		8,900			6,172			288			4,203
Contracts for Differences - Short Contracts	(3,873		)		413				1,219			(341		)	931			(29		)
Total Return Swaps - Long Contracts	18,782				(2,112		)		1,026			1,786			(4,666		)	(221		)
Total Return Swaps - Short Contracts	(795		)		171				(557		)	76			2,569			(103		)
Index
Index Futures - Long Contracts	(840		)		—				(2,413		)	—			—			—
Index Futures - Short Contracts	(253		)		441				1,169			(441		)	(314		)	—
Interest Rates
Bond Futures - Short Contracts	(1,077		)		(212		)		(289		)	(36		)	—			248
Commodities Futures - Short Contracts	(11		)		(143		)		437			(212		)	127			212
Interest Rate Swaps	(743		)		639				949			(255		)	312			(383		)
Interest Rate Swaptions	(455		)		(918		)		(170		)	913			665			5
Sovereign Debt Futures - Short Contracts	—				—				—			—			(970		)	—
Treasury Futures - Long Contracts	—				—				(119		)	—			—			—
Treasury Futures - Short Contracts	(1,163		)		(388		)		830			(456		)	(1,233		)	564
Foreign Currency Exchange Rates
Foreign Currency Forward	16,891				3,617				5,385			(1,255		)	(1,270		)	1,879
Foreign Currency Options	—				—				—			—			38			—
Foreign Currency Options - Purchased	(265		)		941				5,920			1,069			(145		)	198
Foreign Currency Options - Sold	(1,438		)		63				(3,787		)	(109		)	—			(87		)
Reinsurance contract derivatives	—				982				1,250			3,085			—			—
	$	18,520			$	(8,127	)		$	19,331		$	9,926		$	(736	)	$	6,529
Embedded Derivatives
Embedded derivatives in reinsurance contracts	$	—			$	102			$	—		$	—		$	—		$	—
Embedded derivatives in deposit contracts	—				(2,090		)		—			(460		)	—			(150		)
Total Derivative Liabilities (embedded)	$	—			$	(1,988	)		$	—		$	(460	)	$	—		$	(150	)
*Unrealized gain (loss) relates to derivatives still held at reporting date.
The Company’s ISDA agreements with its counterparties provide for various termination events including decline in the NAV of the Company’s investments over a certain period, key man provisions, document delivery schedules, and Employment Retirement Income Security Act and bankruptcy provisions. Upon the triggering of a termination event, a counterparty may avail itself of various remedies including, but not limited to, waiver of the termination event, request for additional collateral, renegotiation of the ISDA agreement, or immediate settlement of positions.
The Company obtains/provides collateral from/to various counterparties for OTC derivative contracts in accordance with bilateral collateral agreements. As of December 31, 2014, the Company posted collateral in the form of cash of $27.6 million (December 31, 2013 - $35.4 million) to certain counterparties to cover collateral requirements for open OTC derivatives.
The Company does not offset its derivative instruments and presents all amounts in the consolidated balance sheets on a gross basis. The Company has pledged cash collateral to counterparties to support the current value of amounts due to the counterparties based on the value of the underlying security. As of December 31, 2014 and 2013, the gross and net amounts of derivative instruments that are subject to enforceable master netting arrangements or similar agreements were as follows:
		Gross Amounts not Offset in the Consolidated Balance Sheet
December 31, 2014 Counterparty		Gross Amounts of Assets Presented in the Consolidated Balance Sheet				Financial Instruments				Cash Collateral Received			Net Amount
		($ in thousands)
Counterparty 1		$	911			$	911			$	—		$	—
Counterparty 2		1,915				371				—			1,544
Counterparty 3		8,423				3,711				—			4,712
Counterparty 4		368				368				—			—
Counterparty 5		2,218				130				—			2,088
Counterparty 6		5,832				2,866				2,420			546
Counterparty 7		745				144				—			601
Counterparty 8		40				40				—			—
Counterparty 9		655				461				—			194
Counterparty 10		23				—				—			23
Total		$	21,130			$	9,002			$	2,420		$	9,708
		Gross Amounts not Offset in the Consolidated Balance Sheet
December 31, 2014 Counterparty		Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet				Financial Instruments				Cash Collateral Pledged			Net Amount (1)
		($ in thousands)
Counterparty 1		$	1,606			$	911			$	512		$	183
Counterparty 2		371				371				—			—
Counterparty 3		3,711				3,711				—			—
Counterparty 4		932				368				564			—
Counterparty 5		130				130				—			—
Counterparty 6		2,866				2,866				—			—
Counterparty 7		144				144				—			—
Counterparty 8		764				40				724			—
Counterparty 9		461				461				—			—
Total		$	10,985			$	9,002			$	1,800		$	183
(1) Net amount as at December 31, 2014 is a result of options not being included as derivative instruments.
		Gross Amounts not Offset in the Consolidated Balance Sheet
31-Dec-13		Gross Amounts of Assets Presented in the Consolidated Balance Sheet				Financial Instruments				Cash Collateral Received			Net Amount
Counterparty
		($ in thousands)
Counterparty 1		$	1,128			$	1,041			$	—		$	87
Counterparty 2		4,998				400				1,629			2,969
Counterparty 3		16,066				3,509				—			12,557
Counterparty 4		1,351				1,351				—			—
Counterparty 5		3,198				1,054				—			2,144
Counterparty 6		12,234				492				10,465			1,277
Counterparty 7		2				2				—			—
Counterparty 8		—				—				—			—
Counterparty 9		68				68				—			—
Total		$	39,045			$	7,917			$	12,094		$	19,034
		Gross Amounts not Offset in the Consolidated Balance Sheet
31-Dec-13		Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet				Financial Instruments				Cash Collateral Pledged			Net Amount
Counterparty
		($ in thousands)
Counterparty 1		$	1,041			$	1,041			$	—		$	—
Counterparty 2		400				400				—			—
Counterparty 3		3,509				3,509				—			—
Counterparty 4		1,360				1,351				9			—
Counterparty 5		1,054				1,054				—			—
Counterparty 6		492				492				—			—
Counterparty 7		59				2				57			—
Counterparty 8		—				—				—			—
Counterparty 9		904				68				836			—
Total		$	8,819			$	7,917			$	902		$	—

Loss_and_loss_adjustment_expen

Loss and loss adjustment expense reserves	12 Months Ended
	Dec. 31, 2014
Loss and Loss Adjustment Expense Reserves [Abstract]
Loss and loss adjustment expense reserves	As of December 31, 2014 and 2013, loss and loss adjustment expense reserves in the consolidated balance sheets was comprised of the following:
		December 31,			December 31,
		2014			2013
		($ in thousands)
	Case loss and loss adjustment expense reserves	$	64,343		$	34,307
	Incurred but not reported loss and loss adjustment expense reserves	213,019			100,024
		$	277,362		$	134,331
	The following table represents the activity in the reserve for losses and loss adjustment expenses for the years ended December 31, 2014, 2013 and 2012:
		2014			2013			2012
		($ in thousands)
	Gross reserves for loss and loss adjustment expenses, beginning of year	$	134,331		$	67,271		$	—
	Less: loss and loss adjustment expenses recoverable, beginning of year	(9,277		)	—			—
	Net reserves for loss and loss adjustment expenses, beginning of year	125,054			67,271			—
	Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
	Current year	286,706			144,509			80,306
	Prior years'	(3,559		)	(4,697		)	—
	Total incurred loss and loss adjustment expenses	283,147			139,812			80,306
	Net loss and loss adjustment expenses paid in respect of losses occurring in:
	Current year	(70,562		)	(27,528		)	(13,035		)
	Prior years'	(61,091		)	(54,501		)	—
	Total net paid losses	(131,653		)	(82,029		)	(13,035		)
	Net reserve for loss and loss adjustment expenses, end of year	276,548			125,054			67,271
	Plus: loss and loss adjustment expenses recoverable, end of year	814			9,277			—
	Gross reserve for loss and loss adjustment expenses, end of year	$	277,362		$	134,331		$	67,271
	The $3.6 million decrease in prior years’ reserves for the year ended December 31, 2014 reflects $0.7 million of net favorable reserve development and $2.9 million resulting from decreases in premium estimates on certain contracts. The changes in loss and loss adjustment expense reserves related to premium estimate changes were accompanied by similar changes in the premium earned for those contracts, resulting in minimal impact to net underwriting income in the period.
	The $4.7 million decrease in prior years’ reserves for the year ended December 31, 2013 reflects $1.3 million of favorable loss experience on several contracts and $3.4 million related to decreases in premium estimates, primarily related to one crop contract. The reduction in loss and loss adjustment expense reserves related to premium estimates was accompanied by an equal decrease in the premium written and earned for that contract, resulting in a minimal impact to net underwriting income.
	The Company started its underwriting activities in 2012, as a result, there were no loss and loss adjustment expenses incurred or paid in respect of losses occurring in prior years for that period.

Management_performance_and_fou

Management, performance and founders fees	12 Months Ended
	Dec. 31, 2014
Management, Performance and Founders Fees [Abstract]
Management, performance and founders fees	The Company and Third Point Re are party to a Joint Venture and Investment Management Agreement (the “Investment Agreement”) with Third Point LLC and Third Point Advisors LLC under which Third Point LLC manages certain jointly held assets.
	Pursuant to the Investment Agreement, Third Point Advisors LLC receives an annual performance fee allocation equal to 20% of the net investment income of the Company’s share of the investment assets managed by Third Point LLC, subject to a loss carry forward provision. Additionally, a total management fee equal to 2% annually of the Company’s share of the investment assets managed by Third Point LLC is paid to Third Point LLC and various Founders of the Company. Management fees are paid monthly, whereas performance fees are paid annually, in arrears.
	Investment fee expenses related to the Investment Agreement, which are included in net investment income in the consolidated statements of income for the years ended December 31, 2014, 2013 and 2012 are as follows:
		2014		2013		2012
		($ in thousands)
	Management fees - Third Point LLC	$	5,037	$	3,651	$	2,444
	Management fees - Founders	28,544		20,686		13,854
	Performance fees - Third Point Advisors LLC	19,935		62,996		33,913
		$	53,516	$	87,333	$	50,211
	As of December 31, 2014, $19.9 million (December 31, 2013 - $63.0 million) was included in non-controlling interests related to the performance fee payable to Third Point Advisors LLC. Since the performance fee allocation is based on annual performance, the performance fees are included in total liabilities until the performance fee is determined at year end and allocated to Third Point Advisors LLC’s capital account, in accordance with the Investment Agreement.

Deposit_contracts

Deposit contracts	12 Months Ended
	Dec. 31, 2014
Deposit Contracts, Liabilities [Abstract]
Deposit contracts	Deposit liability contracts each contain a fixed interest crediting rate. Certain deposit contracts also contain a variable interest crediting feature based on actual investment returns realized by the Company that can increase the overall effective interest crediting rate on those contracts. These variable interest crediting features are considered embedded derivatives. We include the estimated fair value of these embedded derivatives with the host deposit liability contracts. Changes in the estimated fair value of these embedded derivatives are recorded in other expenses in the consolidated statements of income.
	The following table represents activity in the deposit liabilities for the years ended December 31, 2014, 2013 and 2012:
		December 31,			December 31,			December 31,
		2014			2013			2012
		($ in thousands)
	Balance, beginning of period	$	120,946		$	50,446		$	—
	Consideration received	18,398			66,369			50,000
	Net investment expense allocation and change in fair value of embedded derivatives	6,436			4,731			446
	Payments	(350		)	(600		)	—
	Balance, end of period	$	145,430		$	120,946		$	50,446

General_and_administrative_exp

General and administrative expenses	12 Months Ended
	Dec. 31, 2014
General and Administrative Expense [Abstract]
General and administrative expenses	General and administrative expenses for the years ended December 31, 2014, 2013 and 2012 are as follows:
			2014		2013		2012
		($ in thousands)
	Payroll and related		$	16,047	$	13,490	$	13,780
	Share compensation expenses		9,258		9,800		6,408
	Legal and accounting		5,251		3,312		1,436
	Travel and entertainment		3,065		2,473		1,887
	IT related		1,621		1,290		1,417
	Corporate insurance		1,123		744		365
	Credit facility fees		1,023		605		677
	Occupancy		532		420		595
	Director and board costs		645		213		236
	Other general and administrative expenses		1,443		689		575
			$	40,008	$	33,036	$	27,376

Net_investment_income

Net investment income	12 Months Ended
	Dec. 31, 2014
Net Investment Income [Abstract]
Net investment income	Net investment income for the years ended December 31, 2014, 2013 and 2012 consisted of the following:
		2014			2013			2012
	Net investment income by type	($ in thousands)
	Net realized gains on investments and investment derivatives	$	193,957		$	236,333		$	55,632
	Net unrealized gains (losses) on investments and investment derivatives	(83,146		)	78,950			113,422
	Net gain (loss) on foreign currencies	2,581			21,106			(219		)
	Dividend and interest income	31,750			14,233			25,284
	Dividends paid on securities sold, not yet purchased	(120		)	(722		)	(1,629		)
	Management and performance fees	(53,516		)	(87,333		)	(50,211		)
	Other expenses	(7,151		)	(8,863		)	(5,411		)
	Net investment income on investments managed by Third Point LLC	84,355			253,704			136,868
	Investment income on cash held by the Catastrophe Reinsurer and Catastrophe Fund	101			86			—
	Net gain on catastrophe bond held by Catastrophe Reinsurer	144			—			—
	Net gain on reinsurance contract derivatives written by the Catastrophe Reinsurer	982			4,335			—
		$	85,582		$	258,125		$	136,868
		2014			2013			2012
	Net investment income by asset class	($ in thousands)
	Net investment gains on equity securities	$	82,902		$	243,449		$	96,210
	Net investment gains on debt securities	80,285			69,194			65,040
	Net investment gains (losses) on other investments	(35,491		)	(5,045		)	7,386
	Net investment gains on investment derivatives	10,393			29,257			5,793
	Net investment gains (losses) on securities sold, not yet purchased	4,334			(5,974		)	17,076
	Net investment income (loss) on cash, including foreign exchange gains (losses)	4,992			17,961			(1,230		)
	Net investment gains (losses) on securities purchased under and agreement to resell	(4,099		)	1,863			562
	Management and performance fees	(53,516		)	(87,333		)	(50,211		)
	Other investment expenses	(4,218		)	(5,247		)	(3,758		)
		$	85,582		$	258,125		$	136,868

Other_expenses

Other expenses	12 Months Ended
	Dec. 31, 2014
Other Income and Expenses [Abstract]
Other expenses	Other expenses for the years ended December 31, 2014, 2013 and 2012 consisted of the following:
		2014		2013		2012
		($ in thousands)
	Deposit liabilities investment expense	$	4,346	$	4,271	296
	Reinsurance contracts investment expense	1,061		191		—
	Change in fair value of embedded derivatives in deposit and reinsurance contracts (1)	1,988		460		150
		$	7,395	$	4,922	$	446

Share_capital

Share capital	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Share capital	Authorized and issued
	The Company’s authorized share capital of $33.0 million is comprised of 300,000,000 common shares with a par value of $0.10 each and 30,000,000 preference shares with a par value of $0.10 each. As of December 31, 2014, 104,473,402 common shares were issued and outstanding. No preference shares have been issued to date.
	On August 20, 2013, the Company completed an IPO of 24,832,484 common shares at a purchase price of $12.50 per share. The net proceeds of the offering were $286.0 million, after deducting offering costs.
	Warrants
	The Company’s Founders and an advisor provided insurance industry expertise, resources and relationships to ensure that the Company would be fully operational with key management in place in time for the January 2012 underwriting season. In consideration of these commitments, the Company reserved for issuance to the Founders and an advisor warrants to purchase, in the aggregate, up to 4.0% (Founders 3.5% and an advisor 0.5%) of the diluted shares (up to a maximum of $1 billion of subscribed shares) provided that the Founders and the advisor will not be issued any warrants for common shares issued in consideration for any capital raised by the Company in excess of $1 billion. The following is a summary of warrants as of December 31, 2014:
		Exercise price		Authorized and	Aggregated fair
				issued	value of
					warrants
		($ in thousands, except for share and per share amounts)
	Founders	$	10	4,069,868	$	15,203
	Advisor	$	10	581,295	2,171
				4,651,163	$	17,374
	The warrants were subject to a performance condition that was met as a result of the IPO. Prior to the IPO, 3,648,006 of the warrants were considered exercisable. After the IPO, the remaining 1,003,157 warrants met the performance condition. These amounts have been recorded as a component of capital raise costs in additional paid in capital resulting in no net impact to total shareholders’ equity.
	The warrants expire 10 years from the date of issuance, December 22, 2011, and will be exercisable at a price per share of $10.00, which is equal to the price per share paid by investors in the initial private offering.

Sharebased_compensation

Share-based compensation	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation	On July 15, 2013, the Third Point Reinsurance Ltd. 2103 Omnibus Incentive Plan (“Omnibus Plan”) was approved by the Board of Directors and subsequently on August 2, 2013 by the Shareholders of the Company. An aggregate of 21,627,906 common shares were made available under the Omnibus Plan. This number of shares includes the shares available under the Third Point Reinsurance Limited Share Incentive Plan (“Share Incentive Plan”). Awards under the Omnibus Plan may be made in the form of performance awards, restricted shares, restricted share units, share options, share appreciation rights and other share-based awards.
	As of December 31, 2014, 10,052,579 (December 31, 2013 - 10,613,975) of the Company’s common shares were available for future issuance under the equity incentive compensation plans.
	Total share based compensation expense of $9.3 million for the year ended December 31, 2014 (2013 - $9.8 million and 2012 - $6.4 million) was included in general and administrative expenses.
	As of December 31, 2014, the Company had $20.0 million (December 31, 2013 - $23.8 million) of unamortized share compensation expense, which is expected to be amortized over a weighted average period of 1.6 years (December 31, 2013 - 2.0 years).
	(a)	Management and director options
	The management options issued under the Share Incentive Plan were subject to a service and performance condition. The service condition will be met with respect to 20% of the management options on each of the first five anniversary dates following the grant date of the management options. The performance condition with respect to the management options was met as a result of the IPO. Prior to the IPO, 8,572,594 of the management options were considered exercisable subject to the service condition. After the IPO, the remaining 2,357,633 management options had met the performance condition.
	The director options contain only a service condition that will be met with respect to 20% of the director options on each of the five anniversary dates following the grant date of the director options. On November 6, 2013, the director options were modified so that a total of 60% of the outstanding options vested on that date and the remaining 40% of the director options were forfeited. These forfeited options were replaced with restricted share awards.
	The management and director options activity for the years ended December 31, 2014, 2013 and 2012 were as follows:
		Number of		Weighted
		options		average exercise
				price
	Balances as of January 1, 2012	—		$	—
	Granted - employees	10,872,090		13.2
	Granted - directors	84,748		13.2
	Balances as of December 31, 2012	10,956,838		13.2
	Granted - employees	348,836		14.09
	Forfeited	(324,599	)	13.2
	Balances as of December 31, 2013	10,981,075		13.23
	Granted - employees	348,836		18.25
	Forfeited	(279,070	)	13.2
	Exercised	(60,000	)	10
	Balances as of December 31, 2014	10,990,841		$	13.41
	The fair value of share options issued were estimated on the grant date using the Black-Scholes option-pricing model. The share price used for purposes of determining the fair value of share options that were granted in the year ended December 31, 2014 was $15.05 (2013 - $10.89 and 2012 - $10.00). The volatility assumption used of 23.1% (2013 - 21.95% and 2012 - 31.25% ) was based on the average estimated volatility of a reinsurance company peer group. The other assumptions used in the option-pricing model were as follows: risk free interest rate of 2.2% (2013 - 1.23% and 2012 - 1.9%), expected life of 6.5 years (2013 - 6.5 years and 2012 - 10.0 years) and a 0.0% dividend yield (2013 - 0.0% and 2012 - 0.0%). As of December 31, 2014, the weighted average remaining contractual term for options outstanding was 7.1 years (2013 - 8.1 years).
	The following table summarizes information about the Company’s management and director share options outstanding as of December 31, 2014:
		Options outstanding					Options exercisable
	Range of exercise prices	Number of		Weighted		Remaining	Number of	Weighted
		options		average		contractual	options	average
				exercise price		life		exercise price
	$10.00 - $10.89	6,361,205		$10.03		7.06	3,123,997	$10.01
	$16.00 - $16.89	2,349,702		$15.94		7.23	1,061,332	$16.01
	$20.00 - $25.05	2,279,934		$20.21		7.18	1,061,332	$20.01
		10,990,841		$13.41		7.12	5,246,661	$13.25
	For the year ended December 31, 2014, the Company recorded $6.6 million (2013 - $8.3 million and 2012 - $4.8 million) of share compensation expense related to share options.
	The aggregate intrinsic value of options outstanding and options exercisable as of December 31, 2014 was $28.4 million and $14.0 million, respectively (2013 - $61.5 million and $17.6 million, respectively).
	(b)	Restricted shares with service condition
	Restricted shares vest either ratably or at the end of the required service period and contain certain restrictions during the vesting period, relating to, among other things, forfeiture in the event of termination of employment or service and transferability.
	Restricted share award activity for the restricted shares with only a service condition for the years ended December 31, 2014, 2013 and 2012 was as follows:
		Number of non-		Weighted
		vested restricted		average grant
		shares		date fair value
	Balance as of January 1, 2012	—		$	—
	Granted	641,800		10
	Forfeited	(22,500	)	10
	Balance as of December 31, 2012	619,300		10
	Granted	37,856		15.22
	Balance as of December 31, 2013	657,156		10.3
	Granted	49,684		15.39
	Forfeited	(17,800	)	10
	Vested	(72,926	)	15.56
	Balance as of December 31, 2014	616,114		$	10.1
	For the year ended December 31, 2014, the Company issued 9,614 (2013 - 5,000 and 2012 - 641,800) restricted shares to employees and 40,070 (2013 - 32,856 and 2012 - none) to directors. The restricted shares issued to employees in 2014 will vest after three years from the date of issuance, subject to the grantee’s continued service with the Company. The restricted shares issued in 2013 to employees vest after two years from the date of grant. The restricted shares issued in 2012 cliff vest after three or five years from the date of issuance, subject to the grantee’s continued service with the Company.
	The restricted shares issued to directors in 2014 vested on December 31, 2014. The restricted shares issued in 2013 to directors also vested on December 31, 2014.
	For the year ended December 31, 2014, the Company recorded $2.6 million (2013 - $1.5 million and 2012 - $1.6 million) compensation expense related to restricted share awards.
	(c) Restricted shares with service and performance condition
	In December 2014, the Company granted performance-based restricted shares to employees pursuant to the Omnibus Plan where vesting of the awards is subject to both a service and performance condition. The vesting date for these awards is March 1, 2017 and will be based on a formula applied to the cumulative calendar year results for the 2014 to 2016 calendar years. The formula for determining the amount of shares that will vest is based on underwriting performance of the property and casualty reinsurance segment including underwriting income and the amount of float generated, as defined.
	For the year ended December 31, 2014, 459,746 performance-based restricted shares had been granted at a grant date fair value of $14.60 of which 306,496 were considered probable of vesting.
	For the year ended December 31, 2014, the Company recorded $0.1 million of share compensation expense related to the performance-based restricted shares.

Noncontrolling_interests

Non-controlling interests	12 Months Ended
	Dec. 31, 2014
Noncontrolling Interest [Abstract]
Non-controlling interests	Non-controlling interests represent the portion of equity in consolidated subsidiaries not attributable, directly or indirectly, to the Company. The ownership interests in consolidated subsidiaries held by parties other than the Company have been presented in the consolidated balance sheets, as a separate component of shareholders’ equity. Non-controlling interests as of December 31, 2014 and 2013 are as follows:
		December 31, 2014			December 31, 2013
		($ in thousands)
	Catastrophe Fund	$	60,153		$	49,254
	Catastrophe Fund Manager	(259		)	(236		)
	Joint Venture - Third Point Advisors LLC share	40,241			69,717
		$	100,135		$	118,735
	Income (loss) attributable to non-controlling interests for the years ended December 31, 2014, 2013 and 2012 was:
		2014			2013			2012
		($ in thousands)
	Catastrophe Fund	$	4,748		$	4,284		$	—
	Catastrophe Fund Manager	(23		)	(238		)	—
	Joint Venture - Third Point Advisors LLC share	1,590			1,721			1,216
		$	6,315		$	5,767		$	1,216
	As of December 31, 2014, the following entities were consolidated in accordance with the Financial Accounting Standards Board’s consolidations voting model (ASC 810):
	a)	Third Point Reinsurance Opportunities Fund Ltd. and Third Point Re Cat Ltd.
	As of December 31, 2014, Third Point Re’s investment in the Catastrophe Fund was $59.5 million (December 31, 2013 - $54.8 million), representing approximately 49.7% (December 31, 2013 - 53.0%) of the Catastrophe Fund’s issued, non-voting, participating share capital. In December 2014, the Company announced that it would no longer accept investments in the Catastrophe Fund and that no new business would be written in the Catastrophe Reinsurer.  The Catastrophe Fund Manager will continue to manage the runoff of the remaining exposure in the Catastrophe Fund.
	The Catastrophe Fund Manager holds 100% of the authorized and issued voting, nonparticipating shares of the Catastrophe Fund, while the Catastrophe Fund’s investors, including Third Point Re, hold 100% of issued non-voting, participating shares. Furthermore, 100% of the authorized and issued voting, non-participating share capital of the Catastrophe Reinsurer and 100% of the issued non-voting, participating share capital of the Catastrophe Reinsurer is held by the Catastrophe Fund.
	For the year ended December 31, 2014, the Catastrophe Fund raised $6.2 million (Third Point Re’s share - nil) of committed capital resulting in contributions to non-controlling interests for the Catastrophe Fund of $6.2 million for the year ended December 31, 2014.
	For the year ended December 31, 2013, the Catastrophe Fund raised $53.0 million (Third Point Re’s share - $28.0 million) of committed capital resulting in a contribution to non-controlling interests for the Catastrophe Fund of $25.3 million for the year ended December 31, 2013. The Catastrophe Fund began its operations in 2013, as a result, no contributions or calls were made in 2012.
	b)	Third Point Reinsurance Investment Management Ltd. (the “Catastrophe Fund Manager”)
	The Catastrophe Fund Manager has been consolidated as part of the Company with Hiscox’s 15% interest in the Catastrophe Fund Manager recorded as a non-controlling interest. The Catastrophe Fund Manager acts as manager for both the Catastrophe Fund and the Catastrophe Reinsurer and in that capacity is responsible for overseeing:
	•	The investment activities of the Catastrophe Fund, and
	•	The underwriting activities of the Catastrophe Reinsurer.
	The Catastrophe Fund Manager does not participate in the profits or losses of either the Catastrophe Fund or the Catastrophe Reinsurer; however, the Catastrophe Fund Manager does receive management and performance fees for its advisory services.
	On January 5, 2015, the Company and Hiscox agreed to terminate Hiscox’s 15% ownership in the Catastrophe Fund Manager effective December 31, 2014.
	As of December 31, 2014, the following entity was consolidated in accordance with the Financial Accounting Standards Board’s consolidations variable interest model (ASC 810):
	a)	Third Point Reinsurance Investment Management Ltd.
	The joint venture created through the Investment Agreement (Note 10) has been considered a variable interest entity in accordance with U.S. GAAP. Since the Company was deemed to be the primary beneficiary, the Company has consolidated the joint venture and has recorded Third Point Advisors LLC’s minority interest as a non-controlling interest in the consolidated statements of shareholders’ equity.
	For the year ended December 31, 2014, $51.0 million (2013 - $35.1 and 2012 - $nil) was distributed by Third Point Advisors LLC and reduced the amount of the non-controlling interest.
	As of December 31, 2014, the following entities were not consolidated as per ASC 810: Consolidation:
	a)	TP Lux Holdco LP
	Third Point Re is a limited partner in TP Lux Holdco LP (the “Cayman HoldCo”), which is an affiliate of the Investment Manager. The Cayman HoldCo was formed as a limited partnership under the laws of the Cayman Islands and invests and holds debt and equity interests in TP Lux HoldCo S.a.r.l, a Luxembourg private limited liability company (the “LuxCo”) established under the laws of the Grand-Duchy of Luxembourg, which is also an affiliate of the Investment Manager.
	LuxCo’s principal objective is to act as a collective investment vehicle to purchase Euro debt and equity investments. Third Point Re invests in the Cayman HoldCo alongside other investment funds managed by the Investment Manager. As of December 31, 2014, Third Point Re held a 9.8% (December 31, 2013 - 10.0%) interest in the Cayman Holdco. Third Point Re accounts for its investment in the limited partnership under the variable interest model, in which Third Point Re is not the primary beneficiary, at fair value in the consolidated balance sheets and records changes in fair value in the consolidated statements of income.
	As of December 31, 2014, the estimated fair value of the investment in the limited partnership was $55.8 million (December 31, 2013 - $29.3 million).  The valuation policy with respect to this investment in a limited partnership is further described in Note 5. Third Point Re’s maximum exposure to loss as a result of its involvement with this investment is limited to the carrying value of the investment.
	b) Third Point Hellenic Recovery US Feeder Fund, L.P.
	Third Point Re is a limited partner in Third Point Hellenic Recovery US Feeder Fund, L.P. (“Hellenic Fund”), which is an affiliate of the Investment Manager. The Hellenic Fund was formed as a limited partnership under the laws of the Cayman Islands on April 12, 2013 and invests and holds debt and equity interests.
	Third Point Re committed $11.4 million (December 31, 2013 - $11.4 million) in the Hellenic Fund, of which $2.9 million (2013 - $4.3 million) was called and $1.5 million (2013 - $nil) was distributed during the year ended December 31, 2014.
	As of December 31, 2014, Third Point Re held a 3.0% (December 31, 2013 - 3.1%) interest in the Hellenic Fund. Third Point Re accounts for its investment in the limited partnership under the variable interest model, in which Third Point Re is not the primary beneficiary, at fair value in the consolidated balance sheets and records the change in the fair value in the consolidated statements of income.
	As of December 31, 2014, the estimated fair value of Third Point Re’s investment in the Hellenic Fund was $6.3 million (December 31, 2013- $5.3 million). The valuation policy with respect to this investment in a limited partnership is further described in Note 5. Third Point Re’s maximum exposure to loss as a result of its involvement with this investment is limited to the carrying value of the investment.

Earnings_per_share

Earnings per share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings per share	The following sets forth the computation of basic and diluted earnings per share for the years ended December 31, 2014, 2013 and 2012:
			2014			2013			2012
	Weighted-average number of common shares outstanding:		($ in thousands, except share and per share amounts)
		Basic number of common shares outstanding	103,287,693			87,505,540			78,432,132
		Dilutive effect of options	1,468,521			400,149			—
		Dilutive effect of warrants	1,634,845			1,064,842			166,104
		Diluted number of common shares outstanding	106,391,059			88,970,531			78,598,236
	Basic net income per common share:
		Net income	$	50,395		$	227,311		$	99,401
		Income allocated to participating shares	(328		)	(1,618		)	(734		)
		Net income available to common shareholders	$	50,067		$	225,693		$	98,667
		Basic net income per common share	$	0.48		$	2.58		$	1.26
	Diluted net income per common share
		Net income	$	50,395		$	227,311		$	99,401
		Income allocated to participating securities	(319		)	(1,592		)	(737		)
		Net income available to common shareholders	$	50,076		$	225,719		$	98,664
		Diluted net income per common share	$	0.47		$	2.54		$	1.26
	For the years ended December 31, 2014, 2013 and 2012, anti-dilutive options, warrants and restricted shares with service and performance condition of 4,501,991, 3,786,173, 3,052,091, respectively, were excluded from the computation of diluted earnings per share.

Related_party_transactions

Related party transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Related party transactions	In addition to the transactions disclosed in Note 5, 10 and 17 to these consolidated financial statements, the following transactions are classified as related party transactions, as each counterparty has either a direct or indirect shareholding in the Company or the Company has an investment in such counterparty.
	a)	Pine Brook Road Partners, LLC and Narragansett Bay Insurance Company
	Third Point Re entered into a quota share reinsurance agreement with Narragansett Bay Insurance Company (“Narragansett Bay”) effective December 31, 2012, which was renewed on December 31, 2013. This contract was not renewed on December 31, 2014. The Company recorded $1.0 million, $4.7 million and $9.0 million of premiums written related to these contracts for the years ended December 31, 2014, 2013 and 2012, respectively.  Pine Brook Road Partners, LLC (“Pine Brook”) is the manager of an investment funds, one of which owns approximately 12.0% (December 31, 2013 - 12.0%) of the Company’s outstanding common shares. Pine Brook is also the manager of an investment fund that owns common shares in Narragansett Bay.
	b)	Third Point Loan L.L.C.
	Third Point Loan L.L.C. (“Loan LLC”) serves as nominee of Third Point Re and other affiliated investment management clients of the Investment Manager for certain investments. Loan LLC has appointed the Investment Manager as its true and lawful agent and attorney. As of December 31, 2014, Loan LLC held $33.4 million (December 31, 2013 - $147.2 million) of Third Point Re’s investments, which are included in investments in securities, commodities, and derivative contracts in the consolidated balance sheets. Third Point Re’s pro rata interest in the underlying investments registered in the name of the Loan LLC and the related income and expense are reflected accordingly in the consolidated balance sheets and the consolidated statements of income.

Financial_instruments_with_off

Financial instruments with off-balance sheet risk or concentrations of credit risk	12 Months Ended
	Dec. 31, 2014
Guarantees [Abstract]
Financial instruments with off-balance sheet risk or concentrations of credit risk	Off-balance sheet risk
	In the normal course of business, the Company trades various financial instruments and engages in various investment activities with off-balance sheet risk. These financial instruments include securities sold, not yet purchased, forwards, futures, options, swaptions, swaps and contracts for differences. Generally, these financial instruments represent future commitments to purchase or sell other financial instruments at specific terms at specified future dates. Each of these financial instruments contains varying degrees of off-balance sheet risk whereby changes in the fair values of the securities underlying the financial instruments or fluctuations in interest rates and index values may exceed the amounts recognized in the consolidated balance sheets.
	Securities sold, not yet purchased are recorded as liabilities in the consolidated balance sheets and have market risk to the extent that the Company, in satisfying its obligations, may be required to purchase securities at a higher value than that recorded in the consolidated balance sheets. The Company’s investments in securities and commodities and amounts due from brokers are partially restricted until the Company satisfies the obligation to deliver securities sold, not yet purchased.
	Forward and futures contracts are a commitment to purchase or sell financial instruments, currencies or commodities at a future date at a negotiated rate. Forward and futures contracts expose the Company to market risks to the extent that adverse changes occur to the underlying financial instruments such as currency rates or equity index fluctuations.
	Option contracts give the purchaser the right, but not the obligation, to purchase from or sell to the option writer financial instruments, commodities or currencies within a defined time period for a specified price. The premium received by the Company upon writing an option contract is recorded as a liability, marked to market on a daily basis and is included in securities sold, not yet purchased in the consolidated balance sheets. In writing an option, the Company bears the market risk of an unfavorable change in the financial instrument underlying the written option. Exercise of an option written by the Company could result in the Company selling or buying a financial instrument at a price different from the current fair value.
	In the normal course of trading activities in its investment portfolio, the Company trades and holds certain derivative contracts, such as written options, which constitute guarantees. The maximum payout for written put options is limited to the number of contracts written and the related strike prices and the maximum payout for written call options is dependent upon the market price of the underlying security at the date of a payout event. As of December 31, 2014, the investment portfolio had a maximum payout amount of approximately $666.9 million (December 31, 2013 - $689.5 million) relating to written put option contracts with expiration ranging from one month to 10 months from the balance sheet date. The maximum payout amount could be offset by the subsequent sale, if any, of assets obtained via the settlement of a payout event. The fair value of these written put options as of December 31, 2014 is $4.5 million (December 31, 2013 - $2.6 million) and is included in securities sold, not yet purchased in the consolidated balance sheets.
	Swaption contracts give the Company the right, but not the obligation, to enter into a specified interest-rate swap within a specified period of time. The Company’s market and counterparty credit risk is limited to the premium paid to enter into the swaption contract and net unrealized gains.
	Total return swaps, contracts for differences, index swaps, and interest rate swaps that involve the exchange of cash flows between the Company and counterparties are based on the change in the fair value of a particular equity, index, or interest rate on a specified notional holding. The use of these contracts exposes the Company to market risks equivalent to actually holding securities of the notional value but typically involve little capital commitment relative to the exposure achieved. The gains or losses of the Company may therefore be magnified on the capital commitment.
	Credit derivatives
	Credit default swaps protect the buyer against the loss of principal on one or more underlying bonds, loans, or mortgages in the event the issuer suffers a credit event. Typical credit events include failure to pay or restructuring of obligations, bankruptcy, dissolution or insolvency of the underlying issuer. The buyer of the protection pays an initial and/or a periodic premium to the seller and receives protection for the period of the contract. If there is not a credit event, as defined in the contract, the buyer receives no payments from the seller. If there is a credit event, the buyer receives a payment from the seller of protection as calculated by the contract between the two parties.
	The Company may also enter into index and/or basket credit default swaps where the credit derivative may reference a basket of single-name credit default swaps or a broad-based index. Generally, in the event of a default on one of the underlying names, the buyer will receive a pro-rata portion of the total notional amount of the credit default index or basket contract from the seller. When the Company purchases single-name, index and basket credit default swaps, the Company is exposed to counterparty nonperformance.
	Upon selling credit default swap protection, the Company may expose itself to the risk of loss from related credit events specified in the contract. Credit spreads of the underlying together with the period of expiration is indicative of the likelihood of a credit event under the credit default swap contract and the Company’s risk of loss. Higher credit spreads and shorter expiration dates are indicative of a higher likelihood of a credit event resulting in the Company’s payment to the buyer of protection. Lower credit spreads and longer expiration dates would indicate the opposite and lowers the likelihood the Company needs to pay the buyer of protection. As of December 31, 2014, there was no cash collateral received specifically related to written credit default swaps as collateral is based on the net exposure associated with all derivative instruments subject to applicable netting agreements with counterparties and may not be specific to any individual derivative contract.
	The following table sets forth certain information related to the Company’s written credit derivatives as of December 31, 2014 and 2013:
	31-Dec-14		Maximum Payout/ Notional Amount (by period of expiration)						Fair Value of Written Credit Derivatives (2)
	Credit Spreads on		0-5 years		5 years or		Total Written		Asset		Liability			Net Asset/(Liability)
	underlying (basis				Greater Expiring Through 2046		Credit Default
	points)						Swaps (1)
			($ in thousands)
	Single name (0 - 250)		$	—	$	5,142	$	5,142	$	—	$	1,319		$	(1,319	)
	Single name (251-500)		—		2,084		2,084		205		—			205
			$	—	$	7,226	$	7,226	$	205	$	1,319		$	(1,114	)
	31-Dec-13		Maximum Payout/ Notional Amount (by period of expiration)						Fair Value of Written Credit Derivatives (2)
	Credit Spreads on		0-5 years		5 years or		Total Written		Asset		Liability			Net Asset/(Liability)
	underlying (basis				Greater Expiring Through 2046		Credit Default
	points)						Swaps (1)
			($ in thousands)
	Single name (0 - 250)		$	368	$	—	$	368	$	—	$	(104	)	$	(104	)
	Single name (251-500)		9,514		—		9,514		1,136		—			1,136
	Index (0-250)		—		550		550		21		(244		)	(223		)
			$	9,882	$	550	$	10,432	$	1,157	$	(348	)	$	809
	-1	As of December 31, 2014 and 2013, the Company did not hold any offsetting buy protection credit derivatives with the same underlying reference obligation.
	-2	Fair value amounts of derivative contracts are shown on a gross basis prior to cash collateral or counterparty netting.
	Concentrations of credit risk
	In addition to off-balance sheet risks related to specific financial instruments, the Company may be subject to concentration of credit risk with particular counterparties. Substantially all securities transactions of the Company are cleared by several major securities firms. The Company had substantially all such individual counterparty concentration with these brokers or their affiliates as of December 31, 2014. However, the Company reduces its credit risk with counterparties by entering into master netting agreements. Therefore, assets represent the Company’s greater unrealized gains less unrealized losses for derivative contracts in which the Company has master netting agreements. Similarly, liabilities represent the Company’s greater unrealized losses less unrealized gains for derivative contracts in which the Joint Venture has master netting agreements. Furthermore, the Company obtains collateral from counterparties to reduce its exposure to counterparty credit risk.
	The Company’s maximum exposure to credit risk associated with counterparty nonperformance on derivative contracts is limited to the net unrealized gains by counterparty inherent in such contracts which are recognised in the consolidated balance sheets. As of December 31, 2014, the Company’s maximum counterparty credit risk exposure was $9.7 million (December 31, 2013 - $19.0 million).

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Operating lease
	The Company leases offices space in Bermuda and in New Jersey, U.S.A. The leases expire on November 30, 2015 and July 31, 2015, respectively. The leases have been accounted for as operating leases. Total rent expense for the year ended December 31, 2014 was $0.5 million (2013: $0.4 million and 2012: $0.4 million).
	Future minimum rental commitments as of December 31, 2014 under this lease are expected to be as follows:
		($ in thousands)
	2015	$	411
	2016	—
	2017	—
	2018	—
	2019	—
		$	411
	Agreements
	Third Point LLC
	The Company and Third Point Re (together, the “Companies”) entered into a 5 year investment management agreement with Third Point LLC on December 22, 2011. The Companies are parties to an Investment Agreement with Third Point LLC under which the Companies, Third Point LLC and Third Point Advisors LLC formed a joint venture for the purpose of managing certain jointly held assets. The non-controlling interest in the consolidated balance sheets includes Third Point Advisors LLC’s share of assets in the investment joint venture.
	On January 28, 2015, Third Point Re USA entered into a similar investment management agreement with Third Point LLC and Third Point Advisors LLC to form a second joint venture for purposes of managing certain jointly held assets of Third Point Re USA and Third Point Advisors LLC. The term of the new investment management agreement coincides with the expiration of the original investment management agreement.
	Netjets
	On December 20, 2011, Third Point Re acquired from Netjets Sales Inc. (“Netjets”) an undivided 12.5% interest in two aircraft for a five year period. On September 3, 2014, the Company acquired an undivided 6.25% interest in one additional aircraft for a five year period, with a minimum commitment period of 2.5 years. The agreements with NetJets provides for monthly management fees, occupied hourly fees and other fees. Future minimum management fee commitments as of December 31, 2014 under the existing leases are expected to be as follows:
		($ in thousands)
	2015	$	660
	2016	639
	2017	24
	2018	—
	2019	—
		$	1,323
	Letters of credit
	As of December 31, 2014, the Company had entered into the following letter of credit facilities, which automatically renew annually unless terminated by either party in accordance with the required notice period:
		Facility (3)		Renewal date
		($ in thousands)
	BNP Paribas (1)	$	100,000	February 15, 2015
	Citibank (2)	250,000		January 23, 2015
	J.P. Morgan	50,000		August 22, 2014
		$	400,000
	-1	On February 15, 2015, the BNP Paribas facility was renewed until February 15, 2016.
	-2	On January 23, 2015, the Citibank facility was renewed until January 23, 2016.
	-3	On February 26, 2015, we entered into a letter of credit facility with Lloyds Bank for $150.0 million.
	As of December 31, 2014, $218.5 million (December 31, 2013 - $127.3 million) of letters of credit, representing 54.6% of the total available facilities, had been drawn upon (December 31, 2013 – 42.4% (based on total available facilities of $300 million)).
	Under the facilities, the Company provides collateral that may consist of equity securities, repurchase agreements and cash and cash equivalents. As of December 31, 2014, cash and cash equivalents with a fair value of $219.0 million (December 31, 2013 - $100.6 million) were pledged as security against the letters of credit issued. These amounts are included in restricted cash and cash equivalents in the consolidated balance sheets. Each of the facilities contain customary events of default and restrictive covenants, including but not limited to, limitations on liens on collateral, transactions with affiliates, mergers and sales of assets, as well as solvency and maintenance of certain minimum pledged equity requirements, A.M. Best Company rating of “A-“ or higher, and restricts issuance of any debt without the consent of the letter of credit provider. Additionally, if an event of default exists, as defined in the letter of credit facilities, the Company will be prohibited from paying dividends. The Company was in compliance with all of the covenants as of December 31, 2014.
	Investments
	Loan and other participation interests purchased by the Company, such as bank debt, may include revolving credit arrangements or other financing commitments obligating the Company to advance additional amounts on demand. As of December 31, 2014, the Company had one unfunded capital commitment of $4.2 million related to its investment in the Hellenic Fund (see Note 17 for additional information).
	In the normal course of business, the Company, as part of its investment strategy, enters into contracts that contain a variety of indemnifications and warranties. The Company’s maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Company that have not yet occurred. However, the Company has not had prior claims or losses pursuant to these contracts and expects the risk of loss to be remote. Thus, no amounts have been accrued related to such indemnifications. The Company also indemnifies Third Point Advisors LLC, Third Point LLC and its employees from and against any loss or expense, including, without limitation any judgment, settlement, legal fees and other costs. Any expenses related to this indemnification are reflected in net investment income in the consolidated statements of income.
	See Note 19 for information regarding investment commitment to Kiskadee Fund.
	Litigation
	From time to time in the normal course of business, the Company may be involved in formal and informal dispute resolution procedures, which may include arbitration or litigation, the outcomes of which determine the rights and obligations under the Company’s reinsurance contracts and other contractual agreements. In some disputes, the Company may seek to enforce its rights under an agreement or to collect funds owing to it.  In other matters, the Company may resist attempts by others to collect funds or enforce alleged rights. While the final outcome of legal disputes that may arise cannot be predicted with certainty, the Company is not currently involved in any formal or informal dispute resolution procedures.

Segment_reporting

Segment reporting	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment reporting	The determination of the Company’s business segments is based on the manner in which management monitors the performance of its operations. The Company reports two operating segments – Property and Casualty Reinsurance and Catastrophe Risk Management. The Company has also identified a corporate function that includes the Company’s investment results and certain general and administrative expenses related to corporate activities.
	Effective January 1, 2014, the Company modified the presentation of its operating segments to allocate net investment income from float to the property and casualty reinsurance segment. The property and casualty reinsurance operations generate excess cash flows, or float, which the Company tracks in managing the business. The Company considers net investment income on float in evaluating the overall contribution of the property and casualty reinsurance segment. Prior period segment results have been adjusted to conform to this presentation.
	The following is a summary of the Company’s operating segments results for the years ended December 31, 2014, 2013 and 2012:
		Year Ended December 31, 2014
		Property and Casualty Reinsurance				Catastrophe Risk Management				Corporate				Total
	Revenues	($ in thousands)
	Gross premiums written	$	601,305			$	11,995			$	—			$	613,300
	Gross premiums ceded	(150		)		—				—				(150		)
	Net premiums written	601,155				11,995				—				613,150
	Change in net unearned premium reserves	(168,858		)		240				—				(168,618		)
	Net premiums earned	432,297				12,235				—				444,532
	Expenses
	Loss and loss adjustment expenses incurred, net	283,180				(33		)		—				283,147
	Acquisition costs, net	136,154				1,052				—				137,206
	General and administrative expenses	22,515				3,113				14,380				40,008
	Total expenses	441,849				4,132				14,380				460,361
	Net underwriting loss	(9,552		)		n/a				n/a				n/a
	Net investment income	11,305				1,227				73,050				85,582
	Other expenses	(7,395		)		—				—				(7,395		)
	Income tax expense	—				—				(5,648		)		(5,648		)
	Segment income (loss) including non-controlling interests	(5,642		)		9,330				53,022				56,710
	Segment income attributable to non-controlling interests	—				(4,725		)		(1,590		)		(6,315		)
	Segment income (loss)	$	(5,642	)		$	4,605			$	51,432			$	50,395
	Property and Casualty Reinsurance - Underwriting Ratios:
	Loss ratio (1)	65.5		%
	Acquisition cost ratio (2)	31.5		%
	Composite ratio (3)	97		%
	General and administrative expense ratio (4)	5.2		%
	Combined ratio (5)	102.2		%
	-1	Loss ratio is calculated by dividing loss and loss adjustment expenses incurred, net by net premiums earned.
	-2	Acquisition cost ratio is calculated by dividing acquisition costs, net by net premiums earned.
	-3	Composite ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net and acquisition costs, net by net premiums earned.
	-4	General and administrative expense ratio is calculated by dividing general and administrative expenses related to underwriting activities by net premiums earned.
	-5	Combined ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net, acquisition costs, net and general and administrative expenses related to underwriting activities by net premiums earned.
		Year Ended December 31, 2013
		Property and Casualty Reinsurance (6)				Catastrophe Risk Management				Corporate				Total
	Revenues	($ in thousands)
	Gross premiums written	$	393,588			$	8,349			$	—			$	401,937
	Gross premiums ceded	(9,975		)		—				—				(9,975		)
	Net premiums written	383,613				8,349				—				391,962
	Change in net unearned premium reserves	(171,006		)		(289		)		—				(171,295		)
	Net premiums earned	212,607				8,060				—				220,667
	Expenses
	Loss and loss adjustment expenses incurred, net	139,616				196				—				139,812
	Acquisition costs, net	66,981				963				—				67,944
	General and administrative expenses	21,838				3,852				7,346				33,036
	Total expenses	228,435				5,011				7,346				240,792
	Net underwriting loss	(15,828		)		n/a				n/a				n/a
	Net investment income	26,953				4,421				226,751				258,125
	Other expenses	(4,922		)		—				—				(4,922		)
	Segment income including non-controlling interests	6,203				7,470				219,405				233,078
	Segment income attributable to non-controlling interests	—				(4,046		)		(1,721		)		(5,767		)
	Segment income	$	6,203			$	3,424			$	217,684			$	227,311
	Property and Casualty Reinsurance - Underwriting Ratios:
	Loss ratio (1)	65.7		%
	Acquisition cost ratio (2)	31.5		%
	Composite ratio (3)	97.2		%
	General and administrative expense ratio (4)	10.3		%
	Combined ratio (5)	107.5		%
	-1	Loss ratio is calculated by dividing loss and loss adjustment expenses incurred, net by net premiums earned.
	-2	Acquisition cost ratio is calculated by dividing acquisition costs, net by net premiums earned.
	-3	Composite ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net and acquisition costs, net by net premiums earned.
	-4	General and administrative expense ratio is calculated by dividing general and administrative expenses related to underwriting activities by net premiums earned.
	-5	Combined ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net, acquisition costs, net and general and administrative expenses related to underwriting activities by net premiums earned.
-6	Effective January 1, 2014, the Company modified the presentation of its operating segments to allocate net investment income from float to the Property and Casualty Reinsurance segment. Prior period segment results have been adjusted to conform to this presentation.
	Year Ended December 31, 2012
	Property and Casualty Reinsurance (6)				Catastrophe Risk Management				Corporate				Total
Revenues	($ in thousands)
Gross premiums written	$	190,374			$	—			$	—			$	190,374
Gross premiums ceded	—				—				—				—
Net premiums written	190,374				—				—				190,374
Change in net unearned premium reserves	(93,893		)		—				—				(93,893		)
Net premiums earned	96,481				—				—				96,481
Expenses
Loss and loss adjustment expenses incurred, net	80,306				—				—				80,306
Acquisition costs, net	24,604				—				—				24,604
General and administrative expenses	20,290				1,534				5,552				27,376
Total expenses	125,200				1,534				5,552				132,286
Net underwriting loss	(28,719		)		n/a				n/a				n/a
Net investment income	4,901				—				131,967				136,868
Other expenses	(446		)		—				—				(446		)
Segment income (loss) including non-controlling interests	(24,264		)		(1,534		)		126,415				100,617
Segment income attributable to non-controlling interests	—				—				(1,216		)		(1,216		)
Segment income (loss)	$	(24,264	)		$	(1,534	)		$	125,199			$	99,401
Property and Casualty Reinsurance - Underwriting Ratios:
Loss ratio (1)	83.2		%
Acquisition cost ratio (2)	25.5		%
Composite ratio (3)	108.7		%
General and administrative expense ratio (4)	21		%
Combined ratio (5)	129.7		%
-1	Loss ratio is calculated by dividing loss and loss adjustment expenses incurred, net by net premiums earned.
-2	Acquisition cost ratio is calculated by dividing acquisition costs, net by net premiums earned.
-3	Composite ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net and acquisition costs, net by net premiums earned.
-4	General and administrative expense ratio is calculated by dividing general and administrative expenses related to underwriting activities by net premiums earned.
-5	Combined ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net, acquisition costs, net and general and administrative expenses related to underwriting activities by net premiums earned.
-6	Effective January 1, 2014, the Company modified the presentation of its operating segments to allocate net investment income from float to the Property and Casualty Reinsurance segment. Prior period segment results have been adjusted to conform to this presentation.
The following table lists the number of contracts that individually contributed more than 10% of total gross premiums written for the years ended December 31, 2014, 2013 and 2012 as a percentage of total gross premiums written in the relevant period:
	2014			2013			2012
Contract 1	20.4	%		14.9	%		22.3	%
Contract 2	17.1	%		11.2	%		22	%
Contract 3	—	%		10.5	%		11.8	%
Total for contracts contributing greater than 10% each	37.5	%		36.6	%		56.1	%
Total for contracts contributing less than 10% each	62.5	%		63.4	%		43.9	%
	100	%		100	%		100	%
The following table provides a breakdown of the Company’s gross premiums written by line of business for the
years ended December 31, 2014, 2013 and 2012:
	2014							2013							2012
	($ in thousands)
Property	$	106,834			17.4	%		$	67,612			16.8	%		$	103,174	54.2	%
Casualty	266,763				43.5	%		210,017				52.2	%		44,700		23.5	%
Specialty	227,708				37.1	%		115,959				28.9	%		42,500		22.3	%
Total property and casualty reinsurance	601,305				98	%		393,588				97.9	%		190,374		100	%
Catastrophe risk management	11,995				2	%		8,349				2.1	%		—		—	%
	$	613,300			100	%		$	401,937			100	%		$	190,374	100	%
The following table provides a breakdown of the Company’s gross premiums written by prospective and retroactive reinsurance contracts for the years ended December 31, 2014, 2013 and 2012:
	2014							2013							2012
	($ in thousands)
Prospective	$	530,169			86.4	%		$	362,151			90.1	%		$	190,374	100	%
Retroactive (1)	83,131				13.6	%		39,786				9.9	%		—		—	%
	$	613,300			100	%		$	401,937			100	%		$	190,374	100	%
-1	Includes all retroactive exposure in reinsurance contracts.
The Company records the gross premium written and earned at the inception of the contract for retroactive reinsurance contracts.
Substantially all of the Company’s business is sourced through reinsurance brokers. The following table provides a breakdown of the Company’s gross premiums written from brokers for the years ended December 31, 2014, 2013 and 2012:
	2014							2013							2012
	($ in thousands)
JLT Re	$	199,563			32.5	%		$	—			—	%		$	—	—	%
Guy Carpenter & Company, LLC	110,063				17.9	%		89,125				22.2	%		65,073		34.2	%
Aon Benfield - a division of Aon plc	80,535				13.1	%		111,865				27.8	%		22,000		11.6	%
Willis Re	61,777				10.1	%		22,871				5.7	%		—		—	%
Advocate Reinsurance Partners, LLC	58,616				9.6	%		57,994				14.4	%		22,473		11.8	%
Other brokers	57,403				9.4	%		63,470				15.8	%		38,328		20.2	%
Total broker placed	567,957				92.6	%		345,325				85.9	%		147,874		77.8	%
Other	45,343				7.4	%		56,612				14.1	%		42,500		22.2	%
	$	613,300			100	%		$	401,937			100	%		$	190,374	100	%
The following table provides a breakdown of the Company’s gross premiums written by domicile of the ceding companies for the years ended December 31, 2014, 2013 and 2012:
	2014							2013							2012
	($ in thousands)
United States	$	339,061			55.3	%		$	304,141			75.7	%		$	190,374	100	%
United Kingdom	176,522				28.8	%		—				—	%		—		—	%
Bermuda	97,717				15.9	%		96,396				24	%		—		—	%
Other	—				—	%		1,400				0.3	%		—		—	%
	$	613,300			100	%		$	401,937			100	%		$	190,374	100	%

Statutory_Requirements

Statutory Requirements	12 Months Ended
	Dec. 31, 2014
Statutory Requirements [Abstract]
Statutory Requirements	The following is a summary of actual and required statutory capital and surplus and statutory net income of Third Point Re as of December 31, 2014 and 2013:
		31-Dec-14		31-Dec-13
		($ in thousands)
	Actual statutory capital	$	1,296,067	$	1,303,487
	Required statutory capital and surplus	622,624		526,933
	For the years ended December 31, 2014, 2013 and 2012, statutory net income was $56.7 million, $230.0 million and $101.3 million, respectively.
	Under the Bermuda Insurance Act, 1978 and related regulations, Third Point Re is subject to capital requirements calculated using the Bermuda Solvency and Capital Requirement, or BSCR model, which is a standardized statutory risk-based capital model used to measure the risk associated with Third Point Re’s assets, liabilities and premiums. Third Point Re’s required statutory capital and surplus under the BSCR model is referred to as the enhanced capital requirement, or ECR. Third Point Re is required to calculate and submit the ECR to the Bermuda Monetary Authority, or the BMA, annually. Following receipt of the submission of Third Point Re’s ECR the BMA has the authority to impose additional capital requirements (capital add-ons) if it deems necessary. If a company fails to maintain or meet its ECR, the BMA may take various degrees of regulatory action. As of December 31, 2014 and 2013, Third Point Re met its ECR.
	The principal difference between statutory capital and surplus and shareholder’s equity presented in accordance with GAAP is deferred acquisition costs and prepaid expenses, which are non-admitted assets for statutory purposes.
	Third Point Re is also required under its Class 4 license to maintain a minimum liquidity ratio whereby the value of its relevant assets is not less than 75% of the amount of its relevant liabilities for general business. As of December 31, 2014 and 2013, Third Point Re met the minimum liquidity ratio requirement.
	Third Point Re may declare dividends subject to it continuing to meet its solvency and capital requirements, which includes continuing to hold statutory capital and surplus equal to or exceeding its ECR. Third Point Re is prohibited from declaring or paying in any fiscal year dividends of more than 25% of its prior year’s statutory capital and surplus unless Third Point Re files with the BMA a signed affidavit by at least two members of the Board of Directors attesting that a dividend would not cause the company to fail to meet its relevant margins. As of December 31, 2014, Third Point Re could pay dividends in 2015 of approximately $324.0 million (2013 - $325.9 million) without providing an affidavit to the BMA. On February 26, 2015, Third Point Re declared a dividend of $158.0 million to Third Point Reinsurance Ltd.

Subsequent_events

Subsequent events	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent events	On January 5, 2015, the shareholders agreement between Third Point Re, Hiscox, and the Catastrophe Fund Manager was terminated by agreement of the parties that the Catastrophe Fund Manager would repurchase for cancellation Hiscox’s common shares, representing 15%, of the Catastrophe Fund Manager.
	On February 13, 2015, TPRUSA issued $115.0 million of senior unsecured notes (the “Notes”) due February 13, 2025. The Notes bear interest at 7.00% and interest is payable semi-annually on February 13 and August 13 of each year, beginning August 13, 2015. The Notes are fully and unconditionally guaranteed by Third Point Reinsurance Ltd., and, in certain circumstances specified in the indenture governing the Notes, certain existing or future subsidiaries of the Company may be required to guarantee the Notes, as described in the indenture governing the Notes.
	On February 26, 2015, Third Point Re declared a dividend of $158.0 million to Third Point Reinsurance Ltd. This dividend was ultimately used to capitalize Third Point Re USA. In February 2015, the Company completed the capitalization of Third Point Re USA with a total of $265.0 million.
	On February 26, 2015, we entered into a letter of credit facility with Lloyds Bank for $150.0 million.

Supplemental_Guarantor_Informa

Supplemental Guarantor Information	12 Months Ended
	Dec. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Supplemental Guarantor Information	The following tables present historical, supplemental guarantor financial information as if new debt was issued by a subsidiary of Third Point Reinsurance Ltd. with Third Point Reinsurance Ltd. serving as a parent guarantor.  The subsidiary presented as the issuer of debt is TPRUSA, a wholly-owned subsidiary, incorporated on November 21, 2014.
	The following information sets forth the Company’s condensed consolidating balance sheets as of December 31, 2014 and 2013 and the condensed consolidating statements of income and cash flows for the years ended December 31, 2014, 2013 and 2012.  Investments in subsidiaries are accounted for on the equity method; accordingly, entries necessary to consolidate the parent guarantor, issuer of debt and all other subsidiaries are reflected in the eliminations column.
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of December 31, 2014
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Assets
	Equity securities	$	—		$	—		$	1,177,796		$	—		$	1,177,796
	Debt securities	—			—			569,648			—			569,648
	Other investments	—			—			83,394			—			83,394
	Total investments in securities and commodities	—			—			1,830,838			—			1,830,838
	Cash and cash equivalents	140			—			28,594			—			28,734
	Restricted cash and cash equivalents	—			—			417,307			—			417,307
	Investment in subsidiaries	1,451,060			—						(1,451,060		)	—
	Due from brokers	—			—			58,241			—			58,241
	Securities purchased under an agreement to sell	—			—			29,852			—			29,852
	Derivative assets, at fair value	—			—			21,130			—			21,130
	Interest and dividends receivable	—			—			2,602			—			2,602
	Reinsurance balances receivable	—			—			303,649			—			303,649
	Deferred acquisition costs, net	—			—			155,901			—			155,901
	Loss and loss adjustment expenses recoverable	—			—			814			—			814
	Other assets	600			666			2,246			—			3,512
	Amounts due from affiliates	1,339			(403		)	(936		)	—			—
	Total assets	$	1,453,139		$	263		$	2,850,238		$	(1,451,060	)	$	2,852,580
	Liabilities and shareholders’ equity
	Liabilities
	Accounts payable and accrued expenses	$	1,226		$	518		$	8,341		$	—		$	10,085
	Reinsurance balances payable	—			—			27,040			—			27,040
	Deposit liabilities	—			—			145,430			—			145,430
	Unearned premium reserves	—			—			433,809			—			433,809
	Loss and loss adjustment expense reserves	—			—			277,362			—			277,362
	Securities sold, not yet purchased, at fair value	—			—			82,485			—			82,485
	Due to brokers	—			—			312,609			—			312,609
	Derivative liabilities, at fair value	—			—			11,015			—			11,015
	Interest and dividends payable	—			—			697			—			697
	Total liabilities	1,226			518			1,298,788			—			1,300,532
	Shareholders' equity
	Common shares	10,447			—			1,251			(1,251		)	10,447
	Additional paid-in capital	1,065,489			—			1,072,671			(1,072,671		)	1,065,489
	Retained earnings	375,977			(255		)	377,393			(377,138		)	375,977
	Shareholders’ equity attributable to shareholders	1,451,913			(255		)	1,451,315			(1,451,060		)	1,451,913
	Non-controlling interests	—			—			100,135			—			100,135
	Total shareholders’ equity	1,451,913			(255		)	1,551,450			(1,451,060		)	1,552,048
	Total liabilities and shareholders’ equity	$	1,453,139		$	263		$	2,850,238		$	(1,451,060	)	$	2,852,580
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of December 31, 2013
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Assets
	Equity securities	$	—		$	—		$	954,111		$	—		$	954,111
	Debt securities	—			—			441,424			—			441,424
	Other investments	—			—			65,329			—			65,329
	Total investments in securities and commodities	—			—			1,460,864			—			1,460,864
	Cash and cash equivalents	294			—			31,331			—			31,625
	Restricted cash and cash equivalents	—			—			193,577			—			193,577
	Investment in subsidiaries	1,394,644			—			—			(1,394,644		)	—
	Due from brokers	—			—			98,386			—			98,386
	Securities purchased under an agreement to sell	—			—			38,147			—			38,147
	Derivative assets, at fair value	—			—			39,045			—			39,045
	Interest and dividends receivable	—			—			2,615			—			2,615
Reinsurance balances receivable	—			—			191,763			—			191,763
Deferred acquisition costs, net	—			—			91,193			—			91,193
Loss and loss adjustment expenses recoverable	—			—			9,277			—			9,277
Other assets	720			—			2,678			—			3,398
Amounts due from affiliates	417			—			(417		)	—			—
Total assets	$	1,396,075		$	—		$	2,158,459		$	(1,394,644	)	$	2,159,890
Liabilities and shareholders’ equity
Liabilities
Accounts payable and accrued expenses	$	242		$	—		$	9,214		$	—		$	9,456
Reinsurance balances payable	—			—			9,081			—			9,081
Deposit liabilities	—			—			120,946			—			120,946
Unearned premium reserves	—			—			265,187			—			265,187
Loss and loss adjustment expense reserves	—			—			134,331			—			134,331
Securities sold, not yet purchased, at fair value	—			—			56,056			—			56,056
Due to brokers	—			—			44,870			—			44,870
Derivative liabilities, at fair value	—			—			8,819			—			8,819
Interest and dividends payable	—			—			748			—			748
Amounts due to affiliates	4,172			—			(4,172		)	—			—
Total liabilities	4,414			—			645,080			—			649,494
Shareholders’ equity
Common shares	10,389			—			1,251			(1,251		)	10,389
Additional paid-in capital	1,055,690			—			1,064,493			(1,064,493		)	1,055,690
Retained earnings	325,582			—			328,900			(328,900		)	325,582
Shareholders’ equity attributable to shareholders	1,391,661			—			1,394,644			(1,394,644		)	1,391,661
Non-controlling interests	—			—			118,735			—			118,735
Total shareholders’ equity	1,391,661			—			1,513,379			(1,394,644		)	1,510,396
Total liabilities and shareholders’ equity	$	1,396,075		$	—		$	2,158,459		$	(1,394,644	)	$	2,159,890
THIRD POINT REINSURANCE LTD.
CONDENSED CONSOLIDATING STATEMENT OF INCOME
For the year ended December 31, 2014
(expressed in thousands of U.S. dollars)
	Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Guarantor
Revenues
Gross premiums written	$	—		$	—		$	613,300		$	—		$	613,300
Gross premiums ceded	—			—			(150		)	—			(150		)
Net premiums written	—			—			613,150			—			613,150
Change in net unearned premium reserves	—			—			(168,618		)	—			(168,618		)
Net premiums earned	—			—			444,532			—			444,532
Net investment income	—			—			85,582			—			85,582
Equity in earnings of subsidiaries	56,238			—			—			(56,238		)	—
Total revenues	56,238			—			530,114			(56,238		)	530,114
Expenses
Loss and loss adjustment expenses incurred, net	—			—			283,147			—			283,147
Acquisition costs, net	—			—			137,206			—			137,206
General and administrative expenses	5,843			255			33,910			—			40,008
Other expenses	—			—			7,395			—			7,395
Total expenses	5,843			255			461,658			—			467,756
Income before income tax expense	50,395			(255		)	68,456			(56,238		)	62,358
Income tax expense	—			—			(5,648		)	—			(5,648		)
Income including non-controlling interests	50,395			(255		)	62,808			(56,238		)	56,710
Income attributable to non-controlling interests	—			—			(6,315		)	—			(6,315		)
Net income (loss)	$	50,395		$	(255	)	$	56,493		$	(56,238	)	$	50,395
THIRD POINT REINSURANCE LTD.
CONDENSED CONSOLIDATING STATEMENT OF INCOME
For the year ended December 31, 2013
(expressed in thousands of U.S. dollars)
	Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Guarantor
Revenues
Gross premiums written	$	—		$	—		$	401,937		$	—		$	401,937
Gross premiums ceded	—			—			(9,975		)	—			(9,975		)
Net premiums written	—			—			391,962			—			391,962
Change in net unearned premium reserves	—			—			(171,295		)	—			(171,295		)
Net premiums earned	—			—			220,667			—			220,667
Net investment income	—			—			258,125			—			258,125
Equity in earnings of subsidiaries	228,646			—			—			(228,646		)	—
Total revenues	228,646			—			478,792			(228,646		)	478,792
Expenses
Loss and loss adjustment expenses incurred, net	—			—			139,812			—			139,812
Acquisition costs, net	—			—			67,944			—			67,944
General and administrative expenses	1,335			—			31,701			—			33,036
Other expenses	—			—			4,922			—			4,922
Total expenses	1,335			—			244,379			—			245,714
Income including non-controlling interests	227,311			—			234,413			(228,646		)	233,078
Income attributable to non-controlling interests	—			—			(5,767		)	—			(5,767		)
Net income	$	227,311		$	—		$	228,646		$	(228,646	)	$	227,311
THIRD POINT REINSURANCE LTD.
CONDENSED CONSOLIDATING STATEMENT OF INCOME
For the year ended December 31, 2012
(expressed in thousands of U.S. dollars)
	Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Guarantor
Revenues
Gross premiums written	$	—		$	—		$	190,374		$	—		$	190,374
Gross premiums ceded	—			—			—			—			—
Net premiums written	—			—			190,374			—			190,374
Change in net unearned premium reserves	—			—			(93,893		)	—			(93,893		)
Net premiums earned	—			—			96,481			—			96,481
Net investment income	—			—			136,868			—			136,868
Equity in earnings of subsidiaries	101,346			—			—			(101,346		)	—
Total revenues	101,346			—			233,349			(101,346		)	233,349
Expenses
Loss and loss adjustment expenses incurred, net	—			—			80,306			—			80,306
Acquisition costs, net	—			—			24,604			—			24,604
General and administrative expenses	1,945			—			25,431			—			27,376
Other expenses	—			—			446			—			446
Total expenses	1,945			—			130,787			—			132,732
Income including non-controlling interests	99,401			—			102,562			(101,346		)	100,617
Income attributable to non-controlling interests	—			—			(1,216		)	—			(1,216		)
Net income	$	99,401		$	—		$	101,346		$	(101,346	)	$	99,401
THIRD POINT REINSURANCE LTD.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the year ended December 31, 2014
(expressed in thousands of U.S. dollars)
	Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Guarantor
Operating activities
Income including non-controlling interests	$	50,395		$	(255	)	$	62,808		$	(56,238	)	$	56,710
Adjustments to reconcile income including non-controlling interests to net cash provided by operating activities
Equity in earnings of subsidiaries	(56,238		)	—			—			56,238			—
Share compensation expense	1,080			—			8,178			—			9,258
Interest expense on deposit liabilities	—			—			4,346			—			4,346
Net unrealized gain on investments and derivatives	—			—			85,057			—			85,057
Net realized gain on investments and derivatives	—			—			(193,957		)	—			(193,957		)
Amortization of premium and accretion of discount, net	—			—			(1,044		)	—			(1,044		)
Changes in assets and liabilities:
Reinsurance balances receivable	—			—			(111,886		)	—			(111,886		)
Deferred acquisition costs, net	—			—			(64,708		)	—			(64,708		)
Loss and loss adjustment expenses recoverable	—			—			8,463			—			8,463
Other assets	120			(666		)	432			—			(114		)
Interest and dividends receivable, net	—			—			(38		)	—			(38		)
Unearned premium reserves	—			—			168,622			—			168,622
Loss and loss adjustment expense reserves	—			—			143,031			—			143,031
Accounts payable and accrued expenses	984			518			(873		)	—			629
Reinsurance balances payable	—			—			18,061			—			18,061
Amounts due from affiliates	(922		)	403			519			—			—
Amounts due to affiliates	(4,172		)	—			4,172			—			—
Net cash provided by operating activities	(8,753		)	—			131,183			—			122,430
Investing activities
Purchases of investments	—			—			(3,114,906		)	—			(3,114,906		)
Proceeds from sales of investments	—			—			2,857,404			—			2,857,404
Purchases of investments to cover short sales	—			—			(232,568		)	—			(232,568		)
Proceeds from short sales of investments	—			—			278,569			—			278,569
Change in due to/from brokers, net	—			—			307,884			—			307,884
Increase in securities purchased under agreement to sell	—			—			8,294			—			8,294
Change in restricted cash and cash equivalents	—			—			(223,730		)	—			(223,730		)
Net cash used in investing activities	—			—			(119,053		)	—			(119,053		)
Financing activities
Proceeds from issuance of common shares, net of costs	599			—			—			—			599
Increase in deposit liabilities	—			—			18,048			—			18,048
Non-controlling interest in investment affiliate, net	—			—			(31,066		)	—			(31,066		)
Non-controlling interest in Catastrophe Fund	—			—			6,151			—			6,151
Dividend received by (paid to) parent	8,000			—			(8,000		)	—			—
Net cash provided by financing activities	8,599			—			(14,867		)	—			(6,268		)
Net (decrease) increase in cash and cash equivalents	(154		)	—			(2,737		)	—			(2,891		)
Cash and cash equivalents at beginning of period	294			—			31,331			—			31,625
Cash and cash equivalents at end of period	$	140		$	—		$	28,594		$	—		$	28,734
THIRD POINT REINSURANCE LTD.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the year ended December 31, 2013
(expressed in thousands of U.S. dollars)
	Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Guarantor
Operating activities
Income including non-controlling interests	$	227,311		$	—		$	234,413		$	(228,646	)	$	233,078
Adjustments to reconcile income including non-controlling interests to net cash provided by operating activities
Equity in earnings of subsidiaries	(228,646		)	—			—			228,646			—
Share compensation expense	—			—			9,800			—			9,800
Interest expense on deposit liabilities	—			—			4,271			—			4,271
Net unrealized gain on investments and derivatives	—			—			(78,490		)	—			(78,490		)
Net realized gain on investments and derivatives	—			—			(236,333		)	—			(236,333		)
Amortization of premium and accretion of discount, net	—			—			(262		)	—			(262		)
Changes in assets and liabilities:
Reinsurance balances receivable	—			—			(107,483		)	—			(107,483		)
Deferred acquisition costs, net	—			—			(45,810		)	—			(45,810		)
Loss and loss adjustment expenses recoverable	—			—			(9,277		)	—			(9,277		)
Other assets	(686		)	—			411			—			(275		)
Interest and dividends receivable, net	—			—			(1,034		)	—			(1,034		)
Unearned premium reserves	—			—			171,294			—			171,294
Loss and loss adjustment expense reserves	—			—			67,060			—			67,060
Accounts payable and accrued expenses	(65		)	—			4,154			—			4,089
Reinsurance balances payable	—			—			9,081			—			9,081
Amounts due from affiliates	353			—			(353		)	—			—
Amounts due to affiliates	2,020			—			(2,020		)	—			—
Net cash provided by operating activities	287			—			19,422			—			19,709
Investing activities
Purchases of investments	—			—			(2,172,077		)	—			(2,172,077		)
Proceeds from sales of investments	—			—			1,943,655			—			1,943,655
Purchases of investments to cover short sales	—			—			(407,965		)	—			(407,965		)
Proceeds from short sales of investments	—			—			290,770			—			290,770
Change in due to/from brokers, net	—			—			12,162			—			12,162
Increase in securities purchased under agreement to sell	—			—			22,261			—			22,261
Change in restricted cash and cash equivalents	—			—			(115,950		)	—			(115,950		)
Contributed capital (to) from subsidiaries	(286,257		)	—			286,257			—			—
Net cash used in investing activities	(286,257		)	—			(140,887		)	—			(427,144		)
Financing activities
Proceeds from issuance of common shares, net of costs	286,095			—			—			—			286,095
Increase in deposit liabilities	—			—			65,769			—			65,769
Non-controlling interest in investment affiliate, net	—			—			27,867			—			27,867
Non-controlling interest in Catastrophe Fund	—			—			25,324			—			25,324
Net cash provided by financing activities	286,095			—			118,960			—			405,055
Net (decrease) increase in cash and cash equivalents	125			—			(2,505		)	—			(2,380		)
Cash and cash equivalents at beginning of period	169			—			33,836			—			34,005
Cash and cash equivalents at end of period	$	294		$	—		$	31,331		$	—		$	31,625
See note 2 for explanation of certain changes made in the presentation of the Company’s consolidated statements of cash flows for the years ended December 31, 2013 and 2012 to conform to the 2014 presentation.
THIRD POINT REINSURANCE LTD.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the year ended December 31, 2012
(expressed in thousands of U.S. dollars)
	Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Guarantor
Operating activities
Income including non-controlling interests	$	99,401		$	—		$	102,562		$	(101,346	)	$	100,617
Adjustments to reconcile income including non-controlling interests to net cash provided by operating activities													—
Equity in earnings of subsidiaries	(101,346		)	—			—			101,346			—
Share compensation expense	—			—			6,408			—			6,408
Interest expense on deposit liabilities	—			—			296			—			296
Net unrealized gain on investments and derivatives	—			—			(113,271		)	—			(113,271		)
Net realized gain on investments and derivatives	—			—			(55,632		)	—			(55,632		)
Amortization of premium and accretion of discount, net	—			—			(2,434		)	—			(2,434		)
Changes in assets and liabilities:													—
Reinsurance balances receivable	—			—			(84,280		)	—			(84,280		)
Deferred acquisition costs, net	—			—			(45,383		)	—			(45,383		)
Other assets	(33		)	—			(1,668		)	—			(1,701		)
Interest and dividends receivable, net	—			—			(833		)	—			(833		)
Unearned premium reserves	—			—			93,893			—			93,893
Loss and loss adjustment expense reserves	—			—			67,271			—			67,271
Accounts payable and accrued expenses	682			—			3,475			—			4,157
Amounts due from affiliates	(770		)	—			770			—			—
Amounts due to affiliates	2,152			—			(2,152		)	—			—
Net cash provided by (used in) operating activities	86			—			(30,978		)	—			(30,892		)
Investing activities
Purchases of investments	—			—			(2,317,234		)	—			(2,317,234		)
Proceeds from sales of investments	—			—			1,521,110			—			1,521,110
Purchases of investments to cover short sales	—			—			(535,443		)	—			(535,443		)
Proceeds from short sales of investments	—			—			729,182			—			729,182
Change in due to/from brokers, net	—			—			(65,678		)	—			(65,678		)
Increase in securities purchased under agreement to sell	—			—			(60,408		)	—			(60,408		)
Change in restricted cash and cash equivalents	—			—			(77,627		)	—			(77,627		)
Contributed capital (to) from subsidiaries	(170,110		)	—			170,110			—			—
Net cash used in investing activities	(170,110		)	—			(635,988		)	—			(806,098		)
Financing activities
Proceeds from issuance of common shares, net of costs	158,593			—			—			—			158,593
Increase in deposit liabilities	—			—			50,000						50,000
Non-controlling interest in investment affiliate, net	—			—			38,913			—			38,913
Non-controlling interest in Catastrophe Fund	—			—			19,646			—			19,646
Non-controlling interest in Catastrophe Manager	—			—			2			—			2
Net cash provided by financing activities	158,593			—			108,561			—			267,154
Net (decrease) increase in cash and cash equivalents	(11,431		)	—			(558,405		)	—			(569,836		)
Cash and cash equivalents at beginning of period	11,600			—			592,241			—			603,841
Cash and cash equivalents at end of period	$	169		$	—		$	33,836		$	—		$	34,005
See note 2 for explanation of certain changes made in the presentation of the Company’s consolidated statements of cash flows for the years ended December 31, 2013 and 2012 to conform to the 2014 presentation.

Quarterly_Financial_Results

Quarterly Financial Results	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly financial results
		Quarters ended
		31-Dec-14			30-Sep-14			30-Jun-14			31-Mar-14
		($ in thousands)
	Revenues
	Gross premiums written	$	253,802		$	126,403		$	145,508		$	87,587
	Gross premiums ceded	—			(150		)	—			—
	Net premiums written	253,802			126,253			145,508			87,587
	Change in net unearned premium reserves	(70,230		)	(17,305		)	(66,758		)	(14,325		)
	Net premiums earned	183,572			108,948			78,750			73,262
	Net investment income (loss)	(6,490		)	1,552			40,485			50,035
	Total revenues	177,082			110,500			119,235			123,297
	Expenses
	Loss and loss adjustment expenses incurred, net	132,364			60,115			44,409			46,259
	Acquisition costs, net	43,875			38,317			29,583			25,431
	General and administrative expenses	10,310			10,124			9,549			10,025
	Other expenses	2,606			2,982			1,020			787
	Total expenses	189,155			111,538			84,561			82,502
	Income (loss) before income tax expense	(12,073		)	(1,038		)	34,674			40,795
	Income tax expense	(1,731		)	(1,542		)	(2,375		)	—
	Net income (loss) including non-controlling interests	(13,804		)	(2,580		)	32,299			40,795
	Income (loss) attributable to non-controlling interests	(875		)	(3,417		)	(1,007		)	(1,016		)
	Net income (loss)	$	(14,679	)	$	(5,997	)	$	31,292		$	39,779
	Earnings (loss) per share
	Basic	$	(0.14	)	$	(0.06	)	$	0.3		$	0.38
	Diluted	$	(0.14	)	$	(0.06	)	$	0.29		$	0.37
	Weighted average number of common shares used in the determination of earnings per share
	Basic	103,324,616			103,295,920			103,264,616			103,264,616
	Diluted	103,324,616			103,295,920			106,433,881			103,413,580
		Quarters ended
		December 31, 2013			September 30, 2013			June 30, 2013			March 31, 2013
		($ in thousands)
	Revenues
	Gross premiums written	$	162,277		$	45,425		$	98,215		$	96,020
	Gross premiums ceded	—			—			—			(9,975		)
	Net premiums written	162,277			45,425			98,215			86,045
	Change in net unearned premium reserves	(103,767		)	20,904			(35,928		)	(52,504		)
	Net premiums earned	58,510			66,329			62,287			33,541
	Net investment income	89,321			54,617			32,826			81,361
	Total revenues	147,831			120,946			95,113			114,902
	Expenses
	Loss and loss adjustment expenses incurred, net	36,133			39,349			45,692			18,638
	Acquisition costs, net	18,833			21,117			14,921			13,073
	General and administrative expenses	8,965			9,846			7,217			7,008
	Other expenses	2,247			1,246			759			670
	Total expenses	66,178			71,558			68,589			39,389
	Net income including non-controlling interests	81,653			49,388			26,524			75,513
	Income attributable to non-controlling interests	(1,565		)	(2,818		)	(301		)	(1,083		)
	Net income	$	80,088		$	46,570		$	26,223		$	74,430
	Earnings per share
	Basic	$	0.77		$	0.52		$	0.33		$	0.94
	Diluted	$	0.75		$	0.51		$	0.33		$	0.93
	Weighted average number of common shares used in the determination of earnings per share
	Basic	103,264,616			89,620,394			78,432,132			78,432,132
	Diluted	106,390,339			90,915,805			79,254,268			79,083,675

Schedule_I_Summary_of_Investme

Schedule I - Summary of Investments - Other than Investments in Related Parties	12 Months Ended
	Dec. 31, 2014
Summary of Investments, Other than Investments in Related Parties [Abstract]
Schedule I - Summary of Investments - Other than Investments in Related Parties	Schedule I - Summary of Investments - Other than Investments in Related Parties
	(expressed in thousands of U.S. dollars)
		Cost		Fair value		Balance sheet value
	Assets
	Equity securities	$	1,073,428	$	1,173,635	$	1,173,635
	Private common equity securities	5,431		4,161		4,161
	Total equities	1,078,859		1,177,796		1,177,796
	Asset-backed securities	391,179		400,234		400,234
	Bank debts	2,438		2,395		2,395
	Corporate bonds	47,525		60,594		60,594
	Municipal bonds	3,291		3,094		3,094
	Sovereign debt	102,500		103,331		103,331
	Total debt securities	546,933		569,648		569,648
	Investments in limited partnerships	85,865		62,110		62,110
	Rights and warrants	1,752		1,843		1,843
	Options	9,093		6,996		6,996
	Trade claims	4,663		10,368		10,368
	Catastrophe bond	2,000		2,077		2,077
	Total other investments	103,373		83,394		83,394
	Total investments	$	1,729,165	$	1,830,838	$	1,830,838

Schedule_III_Supplementary_Ins

Schedule III - Supplementary Insurance Information	12 Months Ended
	Dec. 31, 2014
Supplementary Insurance Information [Abstract]
Schedule III - Supplementary Insurance Information	Schedule III - Supplementary Insurance Information
	For the years ended December 31, 2014, 2013 and 2012
	(expressed in thousands of U.S. dollars)
		As of and for the year ended December 31, 2014
		Deferred acquisition costs, net		Loss and loss adjustment expense reserves		Unearned premium		Net premiums earned		Net investment income		Other Expenses		Loss and loss adjustment expenses incurred, net			Amortization of deferred acquisition costs, net		Other operating expenses		Net premiums written
	Property and Casualty Reinsurance	$	155,891	$	277,285	$	433,757	$	432,297	$	11,305	$	7,395	$	283,180		$	136,154	$	22,515	$	601,155
	Catastrophe Risk Management	10		77		52		12,235		1,227		—		(33		)	1,052		3,113		11,995
	Corporate	—		—		—		—		73,050		—		—			—		14,380		—
		$	155,901	$	277,362	$	433,809	$	444,532	$	85,582	$	7,395	$	283,147		$	137,206	$	40,008	$	613,150
		As of and for the year ended December 31, 2013
		Deferred acquisition costs, net		Loss and loss adjustment expense reserves		Unearned premium		Net premiums earned		Net investment income		Other Expenses		Loss and loss adjustment expenses incurred, net			Amortization of deferred acquisition costs, net		Other operating expenses		Net premiums written
	Property and Casualty Reinsurance	$	91,141	$	134,221	$	264,898	$	212,607	$	26,953	$	4,922	$	139,616		$	66,981	$	21,838	$	383,613
	Catastrophe Risk Management	52		110		289		8,060		4,421		—		196			963		3,852		8,349
	Corporate	—		—		—		—		226,751		—		—			—		7,346		—
		$	91,193	$	134,331	$	265,187	$	220,667	$	258,125	$	4,922	$	139,812		$	67,944	$	33,036	$	391,962
		As of and for the year ended December 31, 2012
		Deferred acquisition costs, net		Loss and loss adjustment expense reserves		Unearned premium		Net premiums earned		Net investment income		Other Expenses		Loss and loss adjustment expenses incurred, net			Amortization of deferred acquisition costs, net		Other operating expenses		Net premiums written
	Property and Casualty Reinsurance	$	45,383	$	67,271	$	93,893	$	96,481	$	4,901	$	446	$	80,306		$	24,604	$	20,290	$	190,374
	Catastrophe Risk Management	—		—		—		—		—		—		—			—		1,534		—
	Corporate	—		—		—		—		131,521		—		—			—		5,552		—
		$	45,383	$	67,271	$	93,893	$	96,481	$	136,422	$	446	$	80,306		$	24,604	$	27,376	$	190,374

Schedule_IV_Reinsurance

Schedule IV - Reinsurance	12 Months Ended
	Dec. 31, 2014
Supplemental Schedule of Reinsurance Premiums for Insurance Companies [Abstract]
Schedule IV - Reinsurance	Schedule IV - Reinsurance
	For the years ended December 31, 2014, 2013 and 2012
	(expressed in thousands of U.S. dollars)
		Direct gross premiums written		Ceded to other companies		Assumed from other companies		Net amount		Percentage of amount assumed to net
	Year ended December 31, 2014	$	—	$	150	$	613,300	$	613,150	100	%
	Year ended December 31, 2013	$	—	$	9,975	$	401,937	$	391,962	98	%
	Year ended December 31, 2012	$	—	$	—	$	190,374	$	190,374	100	%

Significant_accounting_policie1

Significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Use of estimates	Use of estimates
	The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and the 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 from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the loss and loss adjustment expense reserves, estimates of written and earned premiums and fair value of financial instruments.
Cash and restricted cash and cash equivalents	Cash and restricted cash and cash equivalents
	Cash and cash equivalents consist of cash held in banks and other short-term, highly liquid investments with original maturity dates of ninety days or less.
	Restricted cash and cash equivalents consist of cash held in trust accounts with the Catastrophe Reinsurer, securing collateralized reinsurance contracts written, trust accounts securing obligations under certain reinsurance contracts and cash held with brokers securing letters of credit issued under credit facilities.
Premium revenue recognition	Premium revenue recognition
	To the extent that the amount of written premium is estimable, the Company estimates the ultimate premiums for the entire contract period and records this estimate at the inception of the contract. For contracts where the full written premium is not estimable at inception, the Company records written premium for the portion of the contract period for which the amount is estimable. These estimates are based primarily on information in the underlying contracts as well as information provided by clients and/or brokers.
	Premiums written are earned over the exposure period in proportion to the period of risk covered. Unearned premiums represent the portion of premiums written that relate to the remaining term of the underlying policies in force.
	Premiums for retroactive exposures in reinsurance contracts are earned at the inception of the contract, as all of the underlying loss events covered by these exposures occurred in the past. Any underwriting profit at inception related to retroactive exposures in a reinsurance contract is deferred and recognised over the estimated future payout of the loss and loss adjustment expenses reserves. Any underwriting loss at inception related to retroactive exposures in a reinsurance contract is recognised immediately.
	Changes in premium estimates are expected and may result in adjustments in any reporting period. These estimates change over time as additional information regarding the underlying business volume is obtained. Any subsequent adjustments arising on such estimates are recorded in the period in which they are determined.
Reinsurance premiums ceded	Reinsurance premiums ceded
	From time to time the Company reduces the risk of losses on business written by reinsuring certain risks and exposures with other reinsurers. The Company remains liable to the extent that any retrocessionaire fails to meet its obligations and to the extent that the Company does not hold sufficient security for their unpaid obligations. Ceded premiums are written during the period in which the risks incept and are expensed over the contract period in proportion to the period of risk covered. Unearned premiums ceded consist of the unexpired portion of reinsurance ceded.
Deferred acquisition costs	Deferred acquisition costs
	Acquisition costs consist of commissions, brokerage and excise taxes that are related directly to the successful acquisition of new or renewal reinsurance contracts. These costs are deferred and amortized over the period in which the related premiums are earned. The Company evaluates the recoverability of deferred acquisition costs by determining if the sum of future earned premiums and anticipated investment income is greater than expected future loss and loss adjustment expenses and acquisition costs. If a loss is probable on the unexpired portion of contracts in force, a premium deficiency loss is recognized. As of December 31, 2014, deferred acquisition costs are considered to be fully recoverable and no premium deficiency has been recorded.
	Acquisition costs also include profit commissions that are expensed when incurred. Profit commissions are calculated and accrued based on the expected loss experience for contracts and recorded when the current loss estimate indicates that a profit commission is probable under the contract terms.
Loss and loss adjustment expense reserves	Loss and loss adjustment expense reserves
	The Company’s loss and loss adjustment expense reserves include case reserves and reserves for losses incurred but not yet reported (“IBNR reserves”). Case reserves are established for losses that have been reported, but not yet paid. IBNR reserves represent the estimated loss and loss adjustment expenses that have been incurred by insureds and reinsureds but not yet reported to the insurer or reinsurer, including unknown future developments on loss and loss adjustment expenses that are known to the insurer or reinsurer. IBNR reserves are established by management based on actuarially determined estimates of ultimate loss and loss adjustment expenses.
	Inherent in the estimate of ultimate loss and loss adjustment expenses are expected trends in claim severity and frequency and other factors that may vary significantly as claims are settled. Accordingly, ultimate loss and loss adjustment expenses may differ materially from the amounts recorded in the consolidated financial statements. These estimates are reviewed regularly and, as experience develops and new information becomes known, the reserves are adjusted as necessary. Such adjustments, if any, are recorded in the consolidated statements of income in the period in which they become known.
Deposit liabilities	Deposit liabilities
	Certain contracts do not transfer sufficient insurance risk and are accounted for using the deposit method of accounting. Using the deposit method of accounting, a deposit liability, rather than written premium, is initially recorded based upon the consideration received less any explicitly identified premiums or fees. In subsequent periods, the deposit liability is adjusted by calculating the effective yield on the deposit to reflect actual payments to date and future expected payments.
Fair value measurement	Fair value measurement
	The Company determines the fair value of financial instruments in accordance with current accounting guidance, which defines fair value and establishes a three level fair value hierarchy based upon the transparency of inputs used in the valuation of an asset or liability. Fair value is defined as the price that the Company would receive to sell an asset or would pay to transfer a liability in an orderly transaction between market participants at the measurement date. The Company determines the estimated fair value of each individual security utilizing the highest level inputs available.
	The fair value of the Company’s assets and liabilities, which qualify as financial instruments, approximates the carrying amounts presented in the consolidated balance sheets.
Investments	Investments
	The Company’s investments are classified as “trading securities” and are carried at fair value with changes in fair value included in earnings in the consolidated statements of income.
	The fair value of the Company’s investments are based on quoted market prices, or when such prices are not available, by reference to broker or underwriter bid indications, industry recognized pricing vendors, and/or internal pricing valuation techniques. Investment transactions are recorded on a trade date basis with balances pending settlement included in due to/from brokers in the consolidated balance sheets.
	Realized gains and losses are determined using cost calculated on a specific identification basis. Dividends are recorded on the ex-dividend date. Income and expense are recorded on the accrual basis including interest and premiums amortized and discounts accreted.
Derivatives	Derivatives
	Underwriting
	The Catastrophe Reinsurer enters into certain contracts under which the potential loss payments are triggered exclusively by reference to a specified index, such as an industry loss. These contracts are considered derivatives. The Company records the fair value of these contracts in derivative liabilities, at fair value, in the consolidated balance sheet. Changes in the fair value of these contracts are recorded in net investment income in the consolidated statement of income.
	Investments
	Derivative instruments within our investment assets managed by our investment manager Third Point LLC, are recorded in the consolidated balance sheets at fair value, with changes in fair values and realized gains and losses recognised in net investment income in the consolidated statements of income.
	Derivatives serve as a key component of the Company’s investment strategy and are utilized primarily to structure the portfolio, or individual investments, and to economically match the investment objectives of the Company. The Company’s derivatives do not qualify as hedges for financial reporting purposes and are recorded in the consolidated balance sheets on a gross basis and not offset against any collateral pledged or received. Pursuant to the International Swaps and Derivatives Association (“ISDA”) master agreements, securities lending agreements and other derivatives agreements, the Company and its counterparties typically have the ability to net certain payments owed to each other in specified circumstances. In addition, in the event a party to one of the ISDA master agreements, securities lending agreements or other derivatives agreements defaults, or a transaction is otherwise subject to termination, the non-defaulting party generally has the right to set off against payments owed to the defaulting party or collateral held by the non defaulting party.
	The Company enters into derivative contracts to manage credit risk, interest rate risk, currency exchange risk, and other exposure risks. The Company uses derivatives in connection with its risk-management activities to economically hedge certain risks and to gain exposure to certain investments. The utilization of derivative contracts also allows for an efficient means by which to trade certain asset classes.
	Fair values of derivatives are determined by using quoted market prices, industry recognized pricing vendors, and counterparty quotes when available; otherwise fair values are based on pricing models that consider the time value of money, volatility, and the current market and contractual prices of underlying financial instruments.
	Embedded derivatives
	Certain of the Company’s deposit and reinsurance contracts contain interest crediting features that vary based on the net investment return on investments managed by Third Point LLC. These contractual features are considered embedded derivatives in accordance with U.S. GAAP. We include the estimated fair value of these embedded derivatives in the consolidated balance sheets with the host contract in order to reflect the expected settlement of these features with the host contract. Prior to 2014, the changes in estimated fair value of these embedded derivatives were recorded in net investment income. As these embedded derivatives have become more prominent, the presentation has been modified and changes in the estimated fair value of embedded derivatives are now recorded in other expenses in the consolidated statements of income. In addition, fixed interest crediting features on these contracts that were recorded in net investment income are now classified in other expenses in the consolidated statements of income. As a result, investment expense of $4.9 million and $0.4 million that was previously reported in net investment income for the years ended December 31, 2013 and 2012, respectively, is now being reported in other expenses to conform to the current year presentation.
Share-based compensation	Share-based compensation
	The Company accounts for its share-based compensation transactions using the fair value of the award at the grant date. Determining the fair value of share purchase options at the grant date requires estimation and judgment. The Company uses an option-pricing model (Black-Scholes) to calculate the fair value of share purchase options.
	For share purchase options or restricted share awards granted that contain both a service and performance condition, the Company recognizes share compensation expense only for the portion of the options or restricted share awards that are considered probable of vesting. Share compensation for share purchase options or restricted share awards considered probable of vesting is expensed over the service (vesting) period on a graded vesting basis. The probability of share purchase options or restricted share awards vesting is evaluated at each reporting period.  When the share purchase options or restricted share awards are considered probable of vesting, the Company records a true up of share compensation expense from the grant date (service inception date) to the current reporting period end based on the fair value of the options or restricted share awards at the grant date.
	The Company measures grant date fair value for restricted share awards, with a service condition only, based on the price of its common shares at the grant date and the expense is recognised on a straight-line basis over the vesting period.
Warrants	Warrants
	The Company accounts for warrant contracts issued to certain of its founding investors (“Founders”) in conjunction with the initial capitalization of the Company by using either the physical settlement or net-share settlement methods. The fair value of these warrants was recorded in equity as additional paid-in capital. The fair value of warrants issued are estimated on the grant date using the Black-Scholes option-pricing model.
	The Company accounts for certain warrant contracts issued to an advisor, where services have been received by the Company, in part, in exchange for equity instruments, based on the fair value of such services. The associated cost of these warrants has been recorded as capital raise costs and is included in additional paid in capital in the consolidated statements of shareholders’ equity.
Offering costs	Offering costs
	Equity
	Offering costs incurred in connection with the IPO, which included underwriters’ fees, legal and accounting fees, printing and other fees were deducted from the gross proceeds of the offering. The proceeds from the issuance of shares net of offering costs is included in additional paid in capital in the consolidated statements of shareholders’ equity.
	Debt
	Costs incurred in issuing debt, which includes underwriters’ fees, legal and accounting fees, printing and other fees are capitalized and amortized over the term of the debt. The amortization of these costs is included in interest expense in the consolidated statements of income. As of December 31, 2014, the Company had capitalized $0.6 million of costs associated with the February 2015 debt issuance.
Foreign currency transactions	Foreign currency transactions
	The Company’s functional currency is the U.S. dollar. Transactions in foreign currencies are recorded in U.S. dollars at the exchange rate in effect on the transaction date. Monetary assets and liabilities in foreign currencies are remeasured at the exchange rates in effect at the reporting date and foreign exchange gains and losses are included in the consolidated statements of income.
Income taxes and uncertain tax positions	Income taxes and uncertain tax positions
	Under current Bermuda law, the Company and its Bermuda subsidiaries are not subject to any income or capital gains taxes. In the event that such taxes are imposed, the Company and its Bermuda subsidiaries would be exempted from any such taxes until March 2035 under the Tax Assurance Certificates issued to such entities pursuant to the Bermuda Exempted Undertakings Tax Protection Act of 1966, as amended.
	The Company has an operating subsidiary in the United Kingdom, TPRUK, which is subject to relevant taxes in that jurisdiction.  On July 17, 2013, the United Kingdom government passed the Finance Act 2013, which reduced the corporate income tax rate from 23% to 21% (effective April 1, 2014) and provided for a further reduction in the corporate income tax rate from 21% to 20% (effective April 1, 2015). For the year ended December 31, 2014, the Company recorded $0.02 million for income taxes relating to TPRUK.
	The Company is subject to withholding tax obligations related to dividends, capital gains and interest on certain investments. Prior to the second quarter of 2014, these withholding tax obligations were recorded as deductions to net investment income. As these withholding tax obligations have increased, the Company began presenting the relevant amounts in income tax expense in the consolidated statements of income. As a result, withholding taxes of $3.0 million have been recorded in income tax expense for the year ended December 31, 2014. Withholding taxes of $1.1 million and $1.8 million were previously recorded as deductions to net investment income for the years ended December 31, 2013 and 2012, respectively.
	As of and for the year ended December 31, 2014, the Company had recorded a $2.6 million provision for uncertain tax positions related to investment transactions in certain foreign jurisdictions.
Non-controlling interests	Non-controlling interests
	The Company consolidates the results of entities in which it has a controlling financial interest. The Company records the portion of shareholders’ equity attributable to non-controlling interests as a separate line within shareholders’ equity in the consolidated balance sheets. The Company records the portion of income attributable to non-controlling interests as a separate line within the consolidated statements of income.
Earnings per share	Earnings per share
	Basic earnings per share is based on the weighted average number of common shares and participating securities outstanding during the period. The weighted average number of common shares excludes any dilutive effect of outstanding warrants, options and convertible securities such as unvested restricted shares. Diluted earnings per share is based on the weighted average number of common shares and share equivalents including any dilutive effects of warrants, options and other awards under share plans and are determined using the treasury stock method. U.S. GAAP requires that unvested share awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid (referred to as “participating securities”), be included in the number of shares outstanding for both basic and diluted earnings per share calculations. The Company treats certain of its unvested restricted shares as participating securities. In the event of a net loss, the participating securities are excluded from the calculation of both basic and diluted loss per share.
Leases	Leases
	Leases in which substantially all of the risks and rewards of ownership are retained by the lessor are classified as operating leases. Payments made under operating leases (net of any incentives received from the lessor) are recognised in the consolidated statements of income on a straight-line basis over the term of the lease.
Comprehensive income	Comprehensive income
	The Company has no comprehensive income other than net income disclosed in the consolidated statements of income.
Segment information	Segment information
	Under U.S. GAAP, operating segments are based on the internal information that management uses for allocating resources and assessing performance of the Company. The Company reports two operating segments – Property and Casualty Reinsurance and Catastrophe Risk Management. The Company also has a corporate function that includes the Company’s investment results and certain general and administrative expenses related to its corporate activities.
Prior year changes in the presentation of consolidated statements of cash flows	Prior year changes in the presentation of consolidated statements of cash flows
	The Company had previously excluded income attributable to non-controlling interests from cash flows provided by operating activities and included these amounts in cash flows used in investing activities and provided by financing activities. For the year ended December 31, 2014, the Company began including income from non-controlling interests in cash flows provided by operating activities. In addition, cash flows related to the non-controlling interest in investment affiliate were previously included in net cash used in investing activities and is now being included in net cash provided by financing activities. Lastly, we are now including the interest expense on deposit liabilities and change in fair value of embedded derivatives in deposit liability contracts as non-cash adjustments in operating activities.  These changes did not impact the consolidated balance sheet or consolidated income statement for the prior periods.  The Company has corrected the presentation of its consolidated statements of cash flows for the prior year periods.
Recently issued accounting standards	Recently issued accounting standards
	Issued and effective as of December 31, 2014
	In January 2013, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities (ASU 2013-01). The objective of ASU 2013-01 is to address implementation issues about the scope of ASU 2011-11, Disclosures about Offsetting Assets and Liabilities. The amendments clarify that the scope of ASU 2011-11 applies to derivatives, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions. Entities with other types of financial assets and financial liabilities subject to a master netting arrangement or similar agreement also are affected because these amendments make them no longer subject to the disclosure requirements in ASU 2011-11. ASU 2013-01 is effective for interim and annual periods beginning on or after January 1, 2013. The Company adopted ASU 2013-01 effective with its IPO and has included the required disclosures in Note 8 of the notes to the consolidated financial statements.
	In February 2013, the FASB issued Accounting Standards Update No. 2013-02, Comprehensive Income (ASU 2013-02). The objective of ASU 2013-02 is to improve the reporting of reclassifications out of other comprehensive income. ASU 2013-02 is effective for periods subsequent to December 15, 2012. The adoption of this guidance had no impact on the Company’s consolidated financial statements.
	In June 2013, the FASB issued Accounting Standards Update No. 2013-08, Financial Services - Investment Companies - Amendments to the Scope, Measurement, and Disclosure Requirements (ASU 2013-08). The amendments in this update change the assessment of whether an entity is an investment company by developing a new two-tiered approach for that assessment, which requires an entity to possess certain fundamental characteristics while allowing judgment in assessing other typical characteristics. The new approach requires an entity to assess all of the characteristics of an investment company and consider its purpose and design to determine whether it is an investment company. ASU 2013-08 is effective prospectively for periods subsequent to December 15, 2013. Early adoption was prohibited. The Company adopted ASU 2013-08 in the first quarter of 2014, and the adoption of this guidance did not have a material impact on the Company’s consolidated financial statements.
	Issued but not yet effective as of December 31, 2014
	In April 2014, the FASB issued Accounting Standards Update 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (ASU 2014-08). ASU 2014-08 changes the requirements for reporting discontinued operations, such that a disposal of a component of the Company’s operations is required to be reported as discontinued operations if the disposal represents a strategic shift that has, or will have, a major effect on the Company’s operations and financial results. ASU 2014-08 is effective for all disposals that occur after January 1, 2015, with early adoption permitted. The Company does not expect this new pronouncement to have a material impact on the Company’s consolidated financial statements.
	In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (ASU 2014-09). ASU 2014-09 provides a framework, through a five-step process, for recognizing revenue from customers, improves comparability and consistency of recognizing revenue across entities, industries, jurisdictions and capital markets, and requires enhanced disclosures. Certain contracts with customers are specifically excluded from the scope of ASU 2014-09, including amongst others, insurance contracts accounted for under Accounting Standard Codification 944, Financial Services - Insurance. ASU 2014-09 is effective on January 1, 2017 with retrospective adoption required for the comparative periods. 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 financial statements.
	In June 2014, the FASB issued Accounting Standards Update No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to Maturity Transactions, Repurchase Financings, and Disclosures (ASU 2014-11). ASU 2014-11 amends the accounting guidance for “repo-to-maturity” transactions and repurchase agreements executed as repurchase financings. In addition, the new standard requires a transferor to disclose more information about certain transactions, including those in which it retains substantially all of the exposure to the economic returns of the underlying transferred asset over the transaction’s term. For repurchase agreements and securities lending agreements accounted for as secured borrowings as of a reporting date, the new standard requires obligors (transferors of collateral) to disaggregate the related gross obligation by class of collateral pledged, and to disclose the remaining contractual maturity of the agreements, and to discuss the potential risks of these arrangements and related collateral pledged, including the risks stemming from a decline in the value of the pledged collateral and how such risks are managed. Additionally, as a result of the new accounting guidance, repo-to-maturity transactions will be reported as secured borrowings. Transferors will also no longer apply the current “linked” accounting model to repurchase agreements executed contemporaneously with the initial transfer of the underlying financial asset with the same counterparty. ASU 2014-11 is effective prospectively for periods subsequent to December 15, 2014. 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 financial statements.
	In August 2014, the FASB issued Accounting Standards Update 2014-15, Presentation of Financial Statements- Going Concern (ASU 2014-15). ASU 2014-15 requires management to evaluate, for each annual and interim reporting period, whether there are conditions or events that raise substantial doubt about an entity’s ability to continue as a going concern within one year after the date that the financial statements are issued. If conditions or events raise substantial doubt about an entity’s ability to continue as a going concern, the entity will be required to disclose information that enables the users of the financial statements to understand the principal conditions or events, management’s evaluation of the significance of those events or conditions and management’s plans that alleviate substantial doubt about the entity’s ability to continue as a going concern. ASU 2014-1 becomes effective for the annual period ending after December 15, 2016. The Company does not expect this new guidance to have a material impact on the Company’s consolidated financial statements.
	In February 2015, the FASB issued Accounting Standard Update 2015-02, Consolidation (Topic 810) Amendments to the Consolidation Analysis (ASU 2015-02). ASU 2015-02 requires management to evaluate whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities. ASU- 2015-02 eliminates the presumption that a general partner should consolidate a limited partnership and affects the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships. ASU 2015-02 also provides a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. The amendments in this Update are effective for interim and annual periods beginning after December 15, 2015. Early adoption is permitted. The Company is currently evaluating the impact of this guidance on the Company’s consolidated financial statements.

Restricted_cash_and_cash_equiv1

Restricted cash and cash equivalents (Tables)	12 Months Ended
	Dec. 31, 2014
Cash and Cash Equivalents [Abstract]
Schedule of restricted cash and cash equivalents	Restricted cash and cash equivalents as of December 31, 2014 and 2013 consisted of the following:
		December 31,		December 31,
		2014		2013
		($ in thousands)
	Restricted cash securing collateralized reinsurance contracts written by the Catastrophe Reinsurer (1)	$	108,544	$	93,014
	Restricted cash securing letter of credit facilities (2)	218,963		100,563
	Restricted cash securing other reinsurance contracts (3)	89,800		—
		$	417,307	$	193,577
	(1) Restricted cash securing collateralized reinsurance contracts written by the Catastrophe Reinsurer cannot be released until the contract’s exposure has expired and the cedant agrees to release the collateral. All remaining exposures being collateralized by these amounts are expected to expire by July 2015, upon which, the restricted cash will be released.
	(2) Restricted cash securing letter of credit facilities pertain to letters of credit issued to clients and cash securing these obligations which the Company will not be released from until the underlying reserves have been settled. The time period for which the Company expects these letters of credit to be in place varies from contract to contract but, can last several years.
	(3) Restricted cash securing other reinsurance contracts pertain to trust accounts securing the Company’s contractual obligation under certain reinsurance contracts which the Company will not be released from until all underlying risks have expired or have been settled. The time period for which the Company expects these trust accounts to be in place varies from contract to contract but, can last several years.

Investments_Tables

Investments (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Schedule of the separate account managed by TP LLC	The Company’s investments are managed by its investment manager, Third Point LLC (“Third Point LLC” or the “Investment Manager”), under a long-term investment management contract. The Company directly owns the investments that are held in a separate account and managed by Third Point LLC. The following is a summary of the separate account managed by Third Point LLC:
		December 31,			December 31,
		2014			2013
	Assets	($ in thousands)
	Total investments in securities and commodities	$	1,828,761		$	1,460,864
	Cash and cash equivalents	3			869
	Restricted cash and cash equivalents (1)	308,763			100,563
	Due from brokers	58,241			98,386
	Securities purchased under an agreement to sell	29,852			38,147
	Derivative assets	21,130			39,045
	Interest and dividends receivable	2,590			2,604
	Other assets	325			933
	Total assets	$	2,249,665		$	1,741,411
	Liabilities and non-controlling interest
	Accounts payable and accrued expenses	$	464		$	1,759
	Securities sold, not yet purchased, at fair value	82,485			56,056
	Due to brokers	312,609			44,870
	Derivative liabilities	10,985			8,819
	Interest and dividends payable	697			748
	Non-controlling interest	40,242			69,717
	Total liabilities and non-controlling interest	447,482			181,969
	Total net investments managed by Third Point LLC	$	1,802,183		$	1,559,442
	-1	Includes amounts advanced to Third Point Re to fund collateral held in trust accounts.
Schedule of investments, categorized by the level of the fair value hierarchy	The following tables present the Company’s investments, categorized by the level of the fair value hierarchy as of December 31, 2014 and 2013:
		31-Dec-14
		Quoted prices in active markets			Significant other observable inputs			Significant unobservable inputs		Total
		(Level 1)			(Level 2)			(Level 3)
	Assets	($ in thousands)
	Equity securities	$	1,158,428		$	15,207		$	—	$	1,173,635
	Private common equity securities	—			2,718			1,443		4,161
	Total equities	1,158,428			17,925			1,443		1,177,796
	Asset-backed securities	—			395,514			4,720		400,234
	Bank debts	—			2,395			—		2,395
	Corporate bonds	—			56,795			3,799		60,594
	Municipal bonds	—			3,094			—		3,094
	Sovereign debt	—			103,331			—		103,331
	Total debt securities	—			561,129			8,519		569,648
	Investments in limited partnerships	—			55,756			6,354		62,110
	Options	3,205			3,791			—		6,996
	Rights and warrants	1,843			—			—		1,843
	Trade claims	—			10,368			—		10,368
	Catastrophe bond	—			2,077			—		2,077
	Total other investments	5,048			71,992			6,354		83,394
	Derivative assets (free standing)	380			20,750			—		21,130
	Total assets	$	1,163,856		$	671,796		$	16,316	$	1,851,968
	Liabilities
	Equity securities	$	33,222		$	—		$	—	$	33,222
	Sovereign debt	—			29,350			—		29,350
	Corporate bonds	—			13,312			—		13,312
	Options	3,755			2,846			—		6,601
	Total securities sold, not yet purchased	36,977			45,508			—		82,485
	Derivative liabilities (free standing)	505			9,548			962		11,015
	Derivative liabilities (embedded)	—			—			9,289		9,289
	Total liabilities	$	37,482		$	55,056		$	10,251	$	102,789
		As of December 31, 2013
		Quoted prices in active markets			Significant other observable inputs			Significant unobservable inputs		Total
		(Level 1)			(Level 2)			(Level 3)
	Assets	($ in thousands)
	Equity securities	$	839,903		$	17,914		$	—	$	857,817
	Private common equity securities	—			94,282			2,012		96,294
	Total equities	839,903			112,196			2,012		954,111
	Asset-backed securities	—			325,133			400		325,533
	Bank debts	—			8,017			—		8,017
	Corporate bonds	—			82,139			4,610		86,749
	Municipal bonds	—			10,486			—		10,486
	Sovereign debt	—			10,639			—		10,639
	Total debt securities	—			436,414			5,010		441,424
	Investments in limited partnerships	—			29,286			5,292		34,578
	Options	6,284			6,785			—		13,069
	Rights and warrants	1			—			—		1
	Trade claims	—			17,681			—		17,681
	Total other investments	6,285			53,752			5,292		65,329
	Derivative assets	321			38,724			—		39,045
	Total assets	$	846,509		$	641,086		$	12,314	$	1,499,909
	Liabilities
	Equity securities	$	5,207		$	—		$	—	$	5,207
	Sovereign debt	—			37,592			—		37,592
	Corporate bonds	—			3,372			—		3,372
	Options	4,714			5,171			—		9,885
	Total securities sold, not yet purchased	9,921			46,135			—		56,056
	Derivative liabilities (free standing)	441			8,378			—		8,819
	Derivative liabilities (embedded)	—			—			4,430		4,430
	Total liabilities	$	10,362		$	54,513		$	4,430	$	69,305
Schedule of reconciliation of the balances for all investments measured at fair value using significant unobservable inputs	The following table presents the reconciliation for all investments measured at fair value using significant unobservable inputs (Level 3) for the years ended December 31, 2014 and 2013:
		January 1,			Transfers in to (out of) Level 3			Purchases		Sales			Realized and Unrealized Gains(Losses) (1)			December 31,
		2014														2014
		($ in thousands)
	Assets
	Asset-backed securities	$	400		$	2,062		$	5,257	$	(2,898	)	$	(101	)	$	4,720
	Corporate bonds	4,610			—			822		(776		)	(857		)	3,799
	Private common equity securities	2,012			393			—		—			(962		)	1,443
	Investments in limited partnerships	5,292			—			2,916		—			(1,854		)	6,354
	Total assets	$	12,314		$	2,455		$	8,995	$	(3,674	)	$	(3,774	)	$	16,316
	Liabilities
	Derivative liabilities (free standing)	$	—		$	—		$	—	$	(1,135	)	$	173		$	(962	)
	Derivative liabilities (embedded)	(4,430		)	—			—		(2,871		)	(1,988		)	(9,289		)
	Total liabilities	$	(4,430	)	$	—		$	—	$	(4,006	)	$	(1,815	)	$	(10,251	)
		January 1,			Transfers in to (out of) Level 3			Purchases		Sales			Realized and Unrealized Gains(Losses) (1)			December 31,
		2013														2013
		($ in thousands)
	Assets
	Asset-backed securities	$	—		$	133		$	552	$	(12	)	$	(273	)	$	400
	Bank debt	54			(54		)	—		—			—			—
	Corporate bonds	1,046			—			4,094		(1,392		)	862			4,610
	Private common equity securities	2,757			(2,757		)	2,031		—			(19		)	2,012
	Investments in limited partnerships	—			—			4,690		(342		)	944			5,292
	Total assets	$	3,857		$	(2,678	)	$	11,367	$	(1,746	)	$	1,514		$	12,314
	Liabilities
	Derivative liabilities (free standing)	$	—		$	—		$	—	$	(4,335	)	$	4,335		$	—
	Derivative liabilities (embedded)	(2,510		)	—			—		(1,460		)	(460		)	(4,430		)
	Total liabilities	$	(2,510	)	$	—		$	—	$	(5,795	)	$	3,875		$	(4,430	)
	(1) Total change in realized and unrealized gain (loss) recorded on Level 3 financial instruments are included in net investment income in the consolidated statements of income (loss).

Derivatives_Tables

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of listing currency, fair value and notional amounts of derivative instruments	The following tables identify the listing currency, fair value and notional amounts of derivative instruments included in the consolidated balance sheets, categorized by primary underlying risk. Balances are presented on a gross basis.
		As of December 31, 2014
		Listing currency (1)		Fair Value				Notional Amounts (2)
	Derivative Assets by Primary Underlying Risk	($ in thousands)
	Commodity Price
	Commodity Future Options - Sold	USD		$	269			$	25,168
	Credit
	Credit Default Swaps - Protection Purchased	USD		9,456				89,772
	Credit Default Swaps - Protection Sold	USD		205				2,084
	Equity Price
	Contracts for Differences - Long Contracts	USD		263				3,080
	Contracts for Differences - Short Contracts	AUD/EUR		186				6,428
	Total Return Swaps - Long Contracts	USD		43				1,874
	Total Return Swaps - Short Contracts	USD		34				9,763
	Interest Rates
	Commodity Futures - Short Contracts	USD		78				186,280
	Foreign Currency Exchange Rates
	Foreign Currency Forward	CAD/EUR/GBP/JPY		4,241				228,416
	Foreign Currency Options - Purchased	EUR/JPY/KRW/SAR		6,355				283,439
	Total Derivative Assets			$	21,130			$	836,304
		Listing currency (1)		Fair Value				Notional Amounts (2)
	Derivative Liabilities by Primary Underlying Risk	($ in thousands)
	Commodity Price
	Commodity Future Options - Purchased	USD		285				12,012
	Credit
	Credit Default Swaps - Protection Purchased	USD		3,230				49,465
	Credit Default Swaps - Protection Sold	USD		1,319				5,142
	Equity Price
	Contracts for Differences - Long Contracts	EUR/GBP/USD		1,404				48,152
	Contracts for Differences - Short Contracts	AUD/NOK		130				3,070
	Total Return Swaps - Long Contracts	USD		590				11,233
	Interest Rates
	Commodity Futures - Short Contracts	USD		220				467,956
	Treasury Futures - Short Contracts	USD		280				10,119
	Foreign Currency Exchange Rates
	Foreign Currency Options - Sold	EUR/JPY/KRW		3,527				144,257
	Catastrophe Risk derivatives	USD		30				6,000
	Total Derivative Liabilities (free standing)			$	11,015			$	757,406
	Embedded derivative liabilities in reinsurance contracts (3)	USD		2,769				15,000
	Embedded derivative liabilities in deposit contracts (4)	USD		6,520				75,000
	Total Derivative Liabilities (embedded)			$	9,289			$	90,000
	(1) AUD =ustralian Dollar, CAD =anadian Dollar,  EUR =uro,  GBP =ritish Pound,  HKD =ong Kong Dollar, JPY =apanese Yen, KRW =outh Korean Won, NOK =orwegian Krone, SAR =audi Arabian Riyal, USD =S Dollar
	(2) The absolute notional exposure represents the Company’s derivative activity as of December 31, 2014, which is representative of the volume of derivatives held during the period.
	(3) The fair value of embedded derivatives in reinsurance contracts is included in reinsurance balances payable in the consolidated balance sheet.
	(4) The fair value of embedded derivatives in deposit contracts is included in deposit liabilities in the consolidated balance sheet.
		As of December 31, 2013
		Listing currency (1)		Fair Value				Notional Amounts (2)
	Derivative Assets by Primary Underlying Risk	($ in thousands)
	Commodity Price
	Commodity Future Options - Purchased	USD		$	256			$	12,325
	Credit
	Credit Default Swaps - Protection Purchased	USD		15,397				109,520
	Credit Default Swaps - Protection Sold	USD		1,157				9,557
	Equity Price
	Contracts for Differences - Long Contracts	CHF/EUR/GBP/USD		10,549				62,847
	Contracts for Differences - Short Contracts	NOK		67				2,758
	Total Return Swaps - Long Contracts	BRL/JPY/USD		2,950				68,044
	Total Return Swaps - Short Contracts	USD		3				290
	Interest Rates
	Bond Futures - Short Contracts	JPY		212				40,847
	Interest Rate Swaps	EUR		182				212,594
	Interest Rate Swaptions	EUR/JPY/USD		1,269				54,884
	Treasury Futures - Short Contracts	USD		108				6,544
	Foreign Currency Exchange Rates
Foreign Currency Forward	AUD/CAD/JPY/TRY		1,332				59,925
Foreign Currency Options - Purchased	USD		5,563				240,062
Total Derivative Assets			$	39,045			$	880,197
	Listing currency (1)		Fair Value				Notional Amounts (2)
Derivative Liabilities by Primary Underlying Risk	($ in thousands)
Commodity Price
Commodity Future Options - Sold	USD		$	148			$	35,484
Credit
Credit Default Swaps - Protection Purchased	EUR/USD		2,634				59,446
Credit Default Swaps - Protection Sold	USD		348				875
Equity Price
Contracts for Differences - Long Contracts	EUR		66				14,607
Contracts for Differences - Short Contracts	DKK		425				7,253
Total Return Swaps - Long Contracts	BRL/JPY/USD		1,385				24,807
Total Return Swaps - Short Contracts	USD		140				5,037
Index
Index Futures - Short Contracts	USD		441				8,888
Interest Rates
Interest Rate Swaps	EUR/USD		821				465,560
Interest Rate Swaptions	USD/JPY		174				99,587
Foreign Currency Exchange Rates
Foreign Currency Forward	EUR/GBP		709				189,030
Foreign Currency Options - Sold	USD		1,528				178,476
Total Derivative Liabilities			$	8,819			$	1,089,050
Embedded derivative liabilities in deposit contracts (3)	USD		4,430				75,000
Total Derivative Liabilities (embedded)			$	4,430			$	75,000
(1) USD =S dollar, JPY =apanese yen, EUR =uro, GBP =ritish pound, BRL =razilian real, NOK =orwegian krone, AUD =ustralian dollar, DKK =anish krone, CAD =anadian dollar, CHF =wiss Franc, TRY Turkish Lira
(2) The absolute notional exposure represents the Company’s derivative activity as of December 31, 2013, which is representative of the volume of derivatives held during the period.
Schedule of realized and unrealized gains (losses) relating to trading activities	The following table sets forth, by major risk type, the Company’s realized and unrealized gains (losses) relating to derivative trading activities for the years ended December 31, 2014, 2013 and 2012. Realized and unrealized gains (losses) related to free standing derivatives are included in net investment income in the consolidated statements of income. Realized and unrealized gains (losses) related to embedded derivatives are included in other expenses in the consolidated statements of income.
		December 31, 2014								December 31, 2013						December 31, 2012
	Primary Underlying Risk	Realized Gain (Loss)				Unrealized Gain (Loss)*				Realized Gain (Loss)			Unrealized Gain (Loss)*			Realized Gain (Loss)			Unrealized Gain (Loss)*
	Commodity Price	($ in thousands)
	Commodities Futures - Long Contracts	$	—			$	—			$	—		$	—		$	1,710		$	—
	Commodity Future Options - Purchased	(470		)		(289		)		264			15			(17		)	(10		)
	Commodity Future Options - Sold	364				101				(81		)	168			—			—
	Credit
	Credit Default Swaps - Protection Purchased	(5,627		)		1,018				4,243			(10,943		)	1,239			265
	Credit Default Swaps - Protection Sold	1,362				(830		)		(4,845		)	10,690			—			(212		)
	Equity Price
	Contracts for Differences - Long Contracts	(1,869		)		(11,621		)		8,900			6,172			288			4,203
	Contracts for Differences - Short Contracts	(3,873		)		413				1,219			(341		)	931			(29		)
	Total Return Swaps - Long Contracts	18,782				(2,112		)		1,026			1,786			(4,666		)	(221		)
	Total Return Swaps - Short Contracts	(795		)		171				(557		)	76			2,569			(103		)
	Index
	Index Futures - Long Contracts	(840		)		—				(2,413		)	—			—			—
	Index Futures - Short Contracts	(253		)		441				1,169			(441		)	(314		)	—
	Interest Rates
	Bond Futures - Short Contracts	(1,077		)		(212		)		(289		)	(36		)	—			248
	Commodities Futures - Short Contracts	(11		)		(143		)		437			(212		)	127			212
	Interest Rate Swaps	(743		)		639				949			(255		)	312			(383		)
	Interest Rate Swaptions	(455		)		(918		)		(170		)	913			665			5
	Sovereign Debt Futures - Short Contracts	—				—				—			—			(970		)	—
	Treasury Futures - Long Contracts	—				—				(119		)	—			—			—
	Treasury Futures - Short Contracts	(1,163		)		(388		)		830			(456		)	(1,233		)	564
	Foreign Currency Exchange Rates
	Foreign Currency Forward	16,891				3,617				5,385			(1,255		)	(1,270		)	1,879
	Foreign Currency Options	—				—				—			—			38			—
	Foreign Currency Options - Purchased	(265		)		941				5,920			1,069			(145		)	198
	Foreign Currency Options - Sold	(1,438		)		63				(3,787		)	(109		)	—			(87		)
	Reinsurance contract derivatives	—				982				1,250			3,085			—			—
		$	18,520			$	(8,127	)		$	19,331		$	9,926		$	(736	)	$	6,529
	Embedded Derivatives
	Embedded derivatives in reinsurance contracts	$	—			$	102			$	—		$	—		$	—		$	—
	Embedded derivatives in deposit contracts	—				(2,090		)		—			(460		)	—			(150		)
	Total Derivative Liabilities (embedded)	$	—			$	(1,988	)		$	—		$	(460	)	$	—		$	(150	)
	*Unrealized gain (loss) relates to derivatives still held at reporting date.
Schedule of gross and net amounts of derivative instruments that are subject to enforceable master netting arrangements or similar agreements	As of December 31, 2014 and 2013, the gross and net amounts of derivative instruments that are subject to enforceable master netting arrangements or similar agreements were as follows:
			Gross Amounts not Offset in the Consolidated Balance Sheet
	December 31, 2014 Counterparty		Gross Amounts of Assets Presented in the Consolidated Balance Sheet				Financial Instruments				Cash Collateral Received			Net Amount
			($ in thousands)
	Counterparty 1		$	911			$	911			$	—		$	—
	Counterparty 2		1,915				371				—			1,544
	Counterparty 3		8,423				3,711				—			4,712
	Counterparty 4		368				368				—			—
	Counterparty 5		2,218				130				—			2,088
	Counterparty 6		5,832				2,866				2,420			546
	Counterparty 7		745				144				—			601
	Counterparty 8		40				40				—			—
	Counterparty 9		655				461				—			194
	Counterparty 10		23				—				—			23
	Total		$	21,130			$	9,002			$	2,420		$	9,708
			Gross Amounts not Offset in the Consolidated Balance Sheet
	December 31, 2014 Counterparty		Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet				Financial Instruments				Cash Collateral Pledged			Net Amount (1)
			($ in thousands)
	Counterparty 1		$	1,606			$	911			$	512		$	183
	Counterparty 2		371				371				—			—
	Counterparty 3		3,711				3,711				—			—
	Counterparty 4		932				368				564			—
	Counterparty 5		130				130				—			—
	Counterparty 6		2,866				2,866				—			—
	Counterparty 7		144				144				—			—
	Counterparty 8		764				40				724			—
	Counterparty 9		461				461				—			—
	Total		$	10,985			$	9,002			$	1,800		$	183
	(1) Net amount as at December 31, 2014 is a result of options not being included as derivative instruments.
			Gross Amounts not Offset in the Consolidated Balance Sheet
	31-Dec-13		Gross Amounts of Assets Presented in the Consolidated Balance Sheet				Financial Instruments				Cash Collateral Received			Net Amount
	Counterparty
			($ in thousands)
	Counterparty 1		$	1,128			$	1,041			$	—		$	87
	Counterparty 2		4,998				400				1,629			2,969
	Counterparty 3		16,066				3,509				—			12,557
	Counterparty 4		1,351				1,351				—			—
	Counterparty 5		3,198				1,054				—			2,144
	Counterparty 6		12,234				492				10,465			1,277
	Counterparty 7		2				2				—			—
	Counterparty 8		—				—				—			—
	Counterparty 9		68				68				—			—
	Total		$	39,045			$	7,917			$	12,094		$	19,034
			Gross Amounts not Offset in the Consolidated Balance Sheet
	31-Dec-13		Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet				Financial Instruments				Cash Collateral Pledged			Net Amount
	Counterparty
			($ in thousands)
	Counterparty 1		$	1,041			$	1,041			$	—		$	—
	Counterparty 2		400				400				—			—
	Counterparty 3		3,509				3,509				—			—
	Counterparty 4		1,360				1,351				9			—
	Counterparty 5		1,054				1,054				—			—
	Counterparty 6		492				492				—			—
	Counterparty 7		59				2				57			—
	Counterparty 8		—				—				—			—
	Counterparty 9		904				68				836			—
	Total		$	8,819			$	7,917			$	902		$	—

Loss_and_loss_adjustment_expen1

Loss and loss adjustment expense reserves (Tables)	12 Months Ended
	Dec. 31, 2014
Loss and Loss Adjustment Expense Reserves [Abstract]
Schedule of loss and loss adjustment expense reserves	As of December 31, 2014 and 2013, loss and loss adjustment expense reserves in the consolidated balance sheets was comprised of the following:
		December 31,			December 31,
		2014			2013
		($ in thousands)
	Case loss and loss adjustment expense reserves	$	64,343		$	34,307
	Incurred but not reported loss and loss adjustment expense reserves	213,019			100,024
		$	277,362		$	134,331
Schedule of activity in the reserve for losses and loss adjustment expenses	The following table represents the activity in the reserve for losses and loss adjustment expenses for the years ended December 31, 2014, 2013 and 2012:
		2014			2013			2012
		($ in thousands)
	Gross reserves for loss and loss adjustment expenses, beginning of year	$	134,331		$	67,271		$	—
	Less: loss and loss adjustment expenses recoverable, beginning of year	(9,277		)	—			—
	Net reserves for loss and loss adjustment expenses, beginning of year	125,054			67,271			—
	Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
	Current year	286,706			144,509			80,306
	Prior years'	(3,559		)	(4,697		)	—
	Total incurred loss and loss adjustment expenses	283,147			139,812			80,306
	Net loss and loss adjustment expenses paid in respect of losses occurring in:
	Current year	(70,562		)	(27,528		)	(13,035		)
	Prior years'	(61,091		)	(54,501		)	—
	Total net paid losses	(131,653		)	(82,029		)	(13,035		)
	Net reserve for loss and loss adjustment expenses, end of year	276,548			125,054			67,271
	Plus: loss and loss adjustment expenses recoverable, end of year	814			9,277			—
	Gross reserve for loss and loss adjustment expenses, end of year	$	277,362		$	134,331		$	67,271

Management_performance_and_fou1

Management, performance and founders fees (Tables)	12 Months Ended
	Dec. 31, 2014
Management, Performance and Founders Fees [Abstract]
Schedule of investment fee expenses	Investment fee expenses related to the Investment Agreement, which are included in net investment income in the consolidated statements of income for the years ended December 31, 2014, 2013 and 2012 are as follows:
		2014		2013		2012
		($ in thousands)
	Management fees - Third Point LLC	$	5,037	$	3,651	$	2,444
	Management fees - Founders	28,544		20,686		13,854
	Performance fees - Third Point Advisors LLC	19,935		62,996		33,913
		$	53,516	$	87,333	$	50,211

Deposit_contracts_Tables

Deposit contracts (Tables)	12 Months Ended
	Dec. 31, 2014
Deposit Contracts, Liabilities [Abstract]
Schedule of deposit contracts	The following table represents activity in the deposit liabilities for the years ended December 31, 2014, 2013 and 2012:
		December 31,			December 31,			December 31,
		2014			2013			2012
		($ in thousands)
	Balance, beginning of period	$	120,946		$	50,446		$	—
	Consideration received	18,398			66,369			50,000
	Net investment expense allocation and change in fair value of embedded derivatives	6,436			4,731			446
	Payments	(350		)	(600		)	—
	Balance, end of period	$	145,430		$	120,946		$	50,446

General_and_administrative_exp1

General and administrative expenses (Tables)	12 Months Ended
	Dec. 31, 2014
General and Administrative Expense [Abstract]
Schedule of general and administrative expenses	General and administrative expenses for the years ended December 31, 2014, 2013 and 2012 are as follows:
			2014		2013		2012
		($ in thousands)
	Payroll and related		$	16,047	$	13,490	$	13,780
	Share compensation expenses		9,258		9,800		6,408
	Legal and accounting		5,251		3,312		1,436
	Travel and entertainment		3,065		2,473		1,887
	IT related		1,621		1,290		1,417
	Corporate insurance		1,123		744		365
	Credit facility fees		1,023		605		677
	Occupancy		532		420		595
	Director and board costs		645		213		236
	Other general and administrative expenses		1,443		689		575
			$	40,008	$	33,036	$	27,376

Net_investment_income_Tables

Net investment income (Tables)	12 Months Ended
	Dec. 31, 2014
Net Investment Income [Abstract]
Schedule of net investment income	Net investment income for the years ended December 31, 2014, 2013 and 2012 consisted of the following:
		2014			2013			2012
	Net investment income by type	($ in thousands)
	Net realized gains on investments and investment derivatives	$	193,957		$	236,333		$	55,632
	Net unrealized gains (losses) on investments and investment derivatives	(83,146		)	78,950			113,422
	Net gain (loss) on foreign currencies	2,581			21,106			(219		)
	Dividend and interest income	31,750			14,233			25,284
	Dividends paid on securities sold, not yet purchased	(120		)	(722		)	(1,629		)
	Management and performance fees	(53,516		)	(87,333		)	(50,211		)
	Other expenses	(7,151		)	(8,863		)	(5,411		)
	Net investment income on investments managed by Third Point LLC	84,355			253,704			136,868
	Investment income on cash held by the Catastrophe Reinsurer and Catastrophe Fund	101			86			—
	Net gain on catastrophe bond held by Catastrophe Reinsurer	144			—			—
	Net gain on reinsurance contract derivatives written by the Catastrophe Reinsurer	982			4,335			—
		$	85,582		$	258,125		$	136,868
		2014			2013			2012
	Net investment income by asset class	($ in thousands)
	Net investment gains on equity securities	$	82,902		$	243,449		$	96,210
	Net investment gains on debt securities	80,285			69,194			65,040
	Net investment gains (losses) on other investments	(35,491		)	(5,045		)	7,386
	Net investment gains on investment derivatives	10,393			29,257			5,793
	Net investment gains (losses) on securities sold, not yet purchased	4,334			(5,974		)	17,076
	Net investment income (loss) on cash, including foreign exchange gains (losses)	4,992			17,961			(1,230		)
	Net investment gains (losses) on securities purchased under and agreement to resell	(4,099		)	1,863			562
	Management and performance fees	(53,516		)	(87,333		)	(50,211		)
	Other investment expenses	(4,218		)	(5,247		)	(3,758		)
		$	85,582		$	258,125		$	136,868

Other_expenses_Tables

Other expenses (Tables)	12 Months Ended
	Dec. 31, 2014
Other Income and Expenses [Abstract]
Schedule of other expenses	Other expenses for the years ended December 31, 2014, 2013 and 2012 consisted of the following:
		2014		2013		2012
		($ in thousands)
	Deposit liabilities investment expense	$	4,346	$	4,271	296
	Reinsurance contracts investment expense	1,061		191		—
	Change in fair value of embedded derivatives in deposit and reinsurance contracts (1)	1,988		460		150
		$	7,395	$	4,922	$	446
	(1) See discussion of accounting policy for embedded derivatives in Note 2 for additional information.

Share_capital_Tables

Share capital (Tables)	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Schedule of summary of warrants	The following is a summary of warrants as of December 31, 2014:
		Exercise price		Authorized and	Aggregated fair
				issued	value of
					warrants
		($ in thousands, except for share and per share amounts)
	Founders	$	10	4,069,868	$	15,203
	Advisor	$	10	581,295	2,171
				4,651,163	$	17,374

Sharebased_compensation_Tables

Share-based compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of management and director options activity	The management and director options activity for the years ended December 31, 2014, 2013 and 2012 were as follows:
		Number of		Weighted
		options		average exercise
				price
	Balances as of January 1, 2012	—		$	—
	Granted - employees	10,872,090		13.2
	Granted - directors	84,748		13.2
	Balances as of December 31, 2012	10,956,838		13.2
	Granted - employees	348,836		14.09
	Forfeited	(324,599	)	13.2
	Balances as of December 31, 2013	10,981,075		13.23
	Granted - employees	348,836		18.25
	Forfeited	(279,070	)	13.2
	Exercised	(60,000	)	10
	Balances as of December 31, 2014	10,990,841		$	13.41
Schedule of management and director options outstanding	The following table summarizes information about the Company’s management and director share options outstanding as of December 31, 2014:
		Options outstanding					Options exercisable
	Range of exercise prices	Number of		Weighted		Remaining	Number of	Weighted
		options		average		contractual	options	average
				exercise price		life		exercise price
	$10.00 - $10.89	6,361,205		$10.03		7.06	3,123,997	$10.01
	$16.00 - $16.89	2,349,702		$15.94		7.23	1,061,332	$16.01
	$20.00 - $25.05	2,279,934		$20.21		7.18	1,061,332	$20.01
		10,990,841		$13.41		7.12	5,246,661	$13.25
Schedule of restricted share award activity	Restricted share award activity for the restricted shares with only a service condition for the years ended December 31, 2014, 2013 and 2012 was as follows:
		Number of non-		Weighted
		vested restricted		average grant
		shares		date fair value
	Balance as of January 1, 2012	—		$	—
	Granted	641,800		10
	Forfeited	(22,500	)	10
	Balance as of December 31, 2012	619,300		10
	Granted	37,856		15.22
	Balance as of December 31, 2013	657,156		10.3
	Granted	49,684		15.39
	Forfeited	(17,800	)	10
	Vested	(72,926	)	15.56
	Balance as of December 31, 2014	616,114		$	10.1

Noncontrolling_interests_Table

Non-controlling interests (Tables)	12 Months Ended
	Dec. 31, 2014
Noncontrolling Interest [Abstract]
Schedule of noncontrolling interests	Non-controlling interests represent the portion of equity in consolidated subsidiaries not attributable, directly or indirectly, to the Company. The ownership interests in consolidated subsidiaries held by parties other than the Company have been presented in the consolidated balance sheets, as a separate component of shareholders’ equity. Non-controlling interests as of December 31, 2014 and 2013 are as follows:
		December 31, 2014			December 31, 2013
		($ in thousands)
	Catastrophe Fund	$	60,153		$	49,254
	Catastrophe Fund Manager	(259		)	(236		)
	Joint Venture - Third Point Advisors LLC share	40,241			69,717
		$	100,135		$	118,735
	Income (loss) attributable to non-controlling interests for the years ended December 31, 2014, 2013 and 2012 was:
		2014			2013			2012
		($ in thousands)
	Catastrophe Fund	$	4,748		$	4,284		$	—
	Catastrophe Fund Manager	(23		)	(238		)	—
	Joint Venture - Third Point Advisors LLC share	1,590			1,721			1,216
		$	6,315		$	5,767		$	1,216

Earnings_per_share_Tables

Earnings per share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of reconciliation of basic and diluted weighted average shares outstanding	The following sets forth the computation of basic and diluted earnings per share for the years ended December 31, 2014, 2013 and 2012:
			2014			2013			2012
	Weighted-average number of common shares outstanding:		($ in thousands, except share and per share amounts)
		Basic number of common shares outstanding	103,287,693			87,505,540			78,432,132
		Dilutive effect of options	1,468,521			400,149			—
		Dilutive effect of warrants	1,634,845			1,064,842			166,104
		Diluted number of common shares outstanding	106,391,059			88,970,531			78,598,236
	Basic net income per common share:
		Net income	$	50,395		$	227,311		$	99,401
		Income allocated to participating shares	(328		)	(1,618		)	(734		)
		Net income available to common shareholders	$	50,067		$	225,693		$	98,667
		Basic net income per common share	$	0.48		$	2.58		$	1.26
	Diluted net income per common share
		Net income	$	50,395		$	227,311		$	99,401
		Income allocated to participating securities	(319		)	(1,592		)	(737		)
		Net income available to common shareholders	$	50,076		$	225,719		$	98,664
		Diluted net income per common share	$	0.47		$	2.54		$	1.26

Financial_instruments_with_off1

Financial instruments with off-balance sheet risk or concentrations of credit risk (Tables)	12 Months Ended
	Dec. 31, 2014
Guarantees [Abstract]
Schedule of certain information related to the Company’s written credit derivatives	The following table sets forth certain information related to the Company’s written credit derivatives as of December 31, 2014 and 2013:
	31-Dec-14		Maximum Payout/ Notional Amount (by period of expiration)						Fair Value of Written Credit Derivatives (2)
	Credit Spreads on		0-5 years		5 years or		Total Written		Asset		Liability			Net Asset/(Liability)
	underlying (basis				Greater Expiring Through 2046		Credit Default
	points)						Swaps (1)
			($ in thousands)
	Single name (0 - 250)		$	—	$	5,142	$	5,142	$	—	$	1,319		$	(1,319	)
	Single name (251-500)		—		2,084		2,084		205		—			205
			$	—	$	7,226	$	7,226	$	205	$	1,319		$	(1,114	)
	31-Dec-13		Maximum Payout/ Notional Amount (by period of expiration)						Fair Value of Written Credit Derivatives (2)
	Credit Spreads on		0-5 years		5 years or		Total Written		Asset		Liability			Net Asset/(Liability)
	underlying (basis				Greater Expiring Through 2046		Credit Default
	points)						Swaps (1)
			($ in thousands)
	Single name (0 - 250)		$	368	$	—	$	368	$	—	$	(104	)	$	(104	)
	Single name (251-500)		9,514		—		9,514		1,136		—			1,136
	Index (0-250)		—		550		550		21		(244		)	(223		)
			$	9,882	$	550	$	10,432	$	1,157	$	(348	)	$	809
	-1	As of December 31, 2014 and 2013, the Company did not hold any offsetting buy protection credit derivatives with the same underlying reference obligation.
	-2	Fair value amounts of derivative contracts are shown on a gross basis prior to cash collateral or counterparty netting.

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of future minimum rental commitments under lease	Future minimum rental commitments as of December 31, 2014 under this lease are expected to be as follows:
		($ in thousands)
	2015	$	411
	2016	—
	2017	—
	2018	—
	2019	—
		$	411
Schedule of future minimum management fee commitments under the existing lease	Future minimum management fee commitments as of December 31, 2014 under the existing leases are expected to be as follows:
		($ in thousands)
	2015	$	660
	2016	639
	2017	24
	2018	—
	2019	—
		$	1,323
Schedule of credit facilities	As of December 31, 2014, the Company had entered into the following letter of credit facilities, which automatically renew annually unless terminated by either party in accordance with the required notice period:
		Facility (3)		Renewal date
		($ in thousands)
	BNP Paribas (1)	$	100,000	February 15, 2015
	Citibank (2)	250,000		January 23, 2015
	J.P. Morgan	50,000		August 22, 2014
		$	400,000
	-1	On February 15, 2015, the BNP Paribas facility was renewed until February 15, 2016.
	-2	On January 23, 2015, the Citibank facility was renewed until January 23, 2016.
	-3	On February 26, 2015, we entered into a letter of credit facility with Lloyds Bank for $150.0 million.

Segment_reporting_Tables

Segment reporting (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Schedule of operating segments	The following is a summary of the Company’s operating segments results for the years ended December 31, 2014, 2013 and 2012:
		Year Ended December 31, 2014
		Property and Casualty Reinsurance				Catastrophe Risk Management				Corporate				Total
	Revenues	($ in thousands)
	Gross premiums written	$	601,305			$	11,995			$	—			$	613,300
	Gross premiums ceded	(150		)		—				—				(150		)
	Net premiums written	601,155				11,995				—				613,150
	Change in net unearned premium reserves	(168,858		)		240				—				(168,618		)
	Net premiums earned	432,297				12,235				—				444,532
	Expenses
	Loss and loss adjustment expenses incurred, net	283,180				(33		)		—				283,147
	Acquisition costs, net	136,154				1,052				—				137,206
	General and administrative expenses	22,515				3,113				14,380				40,008
	Total expenses	441,849				4,132				14,380				460,361
	Net underwriting loss	(9,552		)		n/a				n/a				n/a
	Net investment income	11,305				1,227				73,050				85,582
	Other expenses	(7,395		)		—				—				(7,395		)
	Income tax expense	—				—				(5,648		)		(5,648		)
	Segment income (loss) including non-controlling interests	(5,642		)		9,330				53,022				56,710
	Segment income attributable to non-controlling interests	—				(4,725		)		(1,590		)		(6,315		)
	Segment income (loss)	$	(5,642	)		$	4,605			$	51,432			$	50,395
	Property and Casualty Reinsurance - Underwriting Ratios:
	Loss ratio (1)	65.5		%
	Acquisition cost ratio (2)	31.5		%
	Composite ratio (3)	97		%
	General and administrative expense ratio (4)	5.2		%
	Combined ratio (5)	102.2		%
	-1	Loss ratio is calculated by dividing loss and loss adjustment expenses incurred, net by net premiums earned.
	-2	Acquisition cost ratio is calculated by dividing acquisition costs, net by net premiums earned.
	-3	Composite ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net and acquisition costs, net by net premiums earned.
	-4	General and administrative expense ratio is calculated by dividing general and administrative expenses related to underwriting activities by net premiums earned.
	-5	Combined ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net, acquisition costs, net and general and administrative expenses related to underwriting activities by net premiums earned.
		Year Ended December 31, 2013
		Property and Casualty Reinsurance (6)				Catastrophe Risk Management				Corporate				Total
	Revenues	($ in thousands)
	Gross premiums written	$	393,588			$	8,349			$	—			$	401,937
	Gross premiums ceded	(9,975		)		—				—				(9,975		)
	Net premiums written	383,613				8,349				—				391,962
	Change in net unearned premium reserves	(171,006		)		(289		)		—				(171,295		)
	Net premiums earned	212,607				8,060				—				220,667
	Expenses
	Loss and loss adjustment expenses incurred, net	139,616				196				—				139,812
	Acquisition costs, net	66,981				963				—				67,944
	General and administrative expenses	21,838				3,852				7,346				33,036
	Total expenses	228,435				5,011				7,346				240,792
	Net underwriting loss	(15,828		)		n/a				n/a				n/a
	Net investment income	26,953				4,421				226,751				258,125
	Other expenses	(4,922		)		—				—				(4,922		)
	Segment income including non-controlling interests	6,203				7,470				219,405				233,078
	Segment income attributable to non-controlling interests	—				(4,046		)		(1,721		)		(5,767		)
	Segment income	$	6,203			$	3,424			$	217,684			$	227,311
	Property and Casualty Reinsurance - Underwriting Ratios:
	Loss ratio (1)	65.7		%
	Acquisition cost ratio (2)	31.5		%
	Composite ratio (3)	97.2		%
	General and administrative expense ratio (4)	10.3		%
	Combined ratio (5)	107.5		%
	-1	Loss ratio is calculated by dividing loss and loss adjustment expenses incurred, net by net premiums earned.
	-2	Acquisition cost ratio is calculated by dividing acquisition costs, net by net premiums earned.
	-3	Composite ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net and acquisition costs, net by net premiums earned.
	-4	General and administrative expense ratio is calculated by dividing general and administrative expenses related to underwriting activities by net premiums earned.
	-5	Combined ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net, acquisition costs, net and general and administrative expenses related to underwriting activities by net premiums earned.
	-6	Effective January 1, 2014, the Company modified the presentation of its operating segments to allocate net investment income from float to the Property and Casualty Reinsurance segment. Prior period segment results have been adjusted to conform to this presentation.
		Year Ended December 31, 2012
	Property and Casualty Reinsurance (6)				Catastrophe Risk Management				Corporate				Total
Revenues	($ in thousands)
Gross premiums written	$	190,374			$	—			$	—			$	190,374
Gross premiums ceded	—				—				—				—
Net premiums written	190,374				—				—				190,374
Change in net unearned premium reserves	(93,893		)		—				—				(93,893		)
Net premiums earned	96,481				—				—				96,481
Expenses
Loss and loss adjustment expenses incurred, net	80,306				—				—				80,306
Acquisition costs, net	24,604				—				—				24,604
General and administrative expenses	20,290				1,534				5,552				27,376
Total expenses	125,200				1,534				5,552				132,286
Net underwriting loss	(28,719		)		n/a				n/a				n/a
Net investment income	4,901				—				131,967				136,868
Other expenses	(446		)		—				—				(446		)
Segment income (loss) including non-controlling interests	(24,264		)		(1,534		)		126,415				100,617
Segment income attributable to non-controlling interests	—				—				(1,216		)		(1,216		)
Segment income (loss)	$	(24,264	)		$	(1,534	)		$	125,199			$	99,401
Property and Casualty Reinsurance - Underwriting Ratios:
Loss ratio (1)	83.2		%
Acquisition cost ratio (2)	25.5		%
Composite ratio (3)	108.7		%
General and administrative expense ratio (4)	21		%
Combined ratio (5)	129.7		%
-1	Loss ratio is calculated by dividing loss and loss adjustment expenses incurred, net by net premiums earned.
-2	Acquisition cost ratio is calculated by dividing acquisition costs, net by net premiums earned.
-3	Composite ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net and acquisition costs, net by net premiums earned.
-4	General and administrative expense ratio is calculated by dividing general and administrative expenses related to underwriting activities by net premiums earned.
-5	Combined ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, net, acquisition costs, net and general and administrative expenses related to underwriting activities by net premiums earned.
-6	Effective January 1, 2014, the Company modified the presentation of its operating segments to allocate net investment income from float to the Property and Casualty Reinsurance segment. Prior period segment results have been adjusted to conform to this presentation.
Schedules of number of contracts that individually contributed more than 10% of total gross premiums written	The following table lists the number of contracts that individually contributed more than 10% of total gross premiums written for the years ended December 31, 2014, 2013 and 2012 as a percentage of total gross premiums written in the relevant period:
		2014			2013			2012
	Contract 1	20.4	%		14.9	%		22.3	%
	Contract 2	17.1	%		11.2	%		22	%
	Contract 3	—	%		10.5	%		11.8	%
	Total for contracts contributing greater than 10% each	37.5	%		36.6	%		56.1	%
	Total for contracts contributing less than 10% each	62.5	%		63.4	%		43.9	%
		100	%		100	%		100	%
Schedule of breakdown of the Company’s gross premiums written by line of business	The following table provides a breakdown of the Company’s gross premiums written by line of business for the
	years ended December 31, 2014, 2013 and 2012:
		2014							2013							2012
		($ in thousands)
	Property	$	106,834			17.4	%		$	67,612			16.8	%		$	103,174	54.2	%
	Casualty	266,763				43.5	%		210,017				52.2	%		44,700		23.5	%
	Specialty	227,708				37.1	%		115,959				28.9	%		42,500		22.3	%
	Total property and casualty reinsurance	601,305				98	%		393,588				97.9	%		190,374		100	%
	Catastrophe risk management	11,995				2	%		8,349				2.1	%		—		—	%
		$	613,300			100	%		$	401,937			100	%		$	190,374	100	%
	The following table provides a breakdown of the Company’s gross premiums written by prospective and retroactive reinsurance contracts for the years ended December 31, 2014, 2013 and 2012:
		2014							2013							2012
		($ in thousands)
	Prospective	$	530,169			86.4	%		$	362,151			90.1	%		$	190,374	100	%
	Retroactive (1)	83,131				13.6	%		39,786				9.9	%		—		—	%
		$	613,300			100	%		$	401,937			100	%		$	190,374	100	%
	-1	Includes all retroactive exposure in reinsurance contracts.
Schedule of breakdown of the Company’s gross premiums written from brokers	The following table provides a breakdown of the Company’s gross premiums written from brokers for the years ended December 31, 2014, 2013 and 2012:
		2014							2013							2012
		($ in thousands)
	JLT Re	$	199,563			32.5	%		$	—			—	%		$	—	—	%
	Guy Carpenter & Company, LLC	110,063				17.9	%		89,125				22.2	%		65,073		34.2	%
	Aon Benfield - a division of Aon plc	80,535				13.1	%		111,865				27.8	%		22,000		11.6	%
	Willis Re	61,777				10.1	%		22,871				5.7	%		—		—	%
	Advocate Reinsurance Partners, LLC	58,616				9.6	%		57,994				14.4	%		22,473		11.8	%
	Other brokers	57,403				9.4	%		63,470				15.8	%		38,328		20.2	%
	Total broker placed	567,957				92.6	%		345,325				85.9	%		147,874		77.8	%
	Other	45,343				7.4	%		56,612				14.1	%		42,500		22.2	%
		$	613,300			100	%		$	401,937			100	%		$	190,374	100	%
Schedule of breakdown of the Company’s gross premiums written by domicile of the ceding companies	The following table provides a breakdown of the Company’s gross premiums written by domicile of the ceding companies for the years ended December 31, 2014, 2013 and 2012:
		2014							2013							2012
		($ in thousands)
	United States	$	339,061			55.3	%		$	304,141			75.7	%		$	190,374	100	%
	United Kingdom	176,522				28.8	%		—				—	%		—		—	%
	Bermuda	97,717				15.9	%		96,396				24	%		—		—	%
	Other	—				—	%		1,400				0.3	%		—		—	%
		$	613,300			100	%		$	401,937			100	%		$	190,374	100	%

Statutory_Requirements_Tables

Statutory Requirements (Tables)	12 Months Ended
	Dec. 31, 2014
Statutory Requirements [Abstract]
Schedule of statutory requirements	The following is a summary of actual and required statutory capital and surplus and statutory net income of Third Point Re as of December 31, 2014 and 2013:
		31-Dec-14		31-Dec-13
		($ in thousands)
	Actual statutory capital	$	1,296,067	$	1,303,487
	Required statutory capital and surplus	622,624		526,933

Supplemental_Guarantor_Informa1

Supplemental Guarantor Information (Tables)	12 Months Ended
	Dec. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Balance Sheet
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of December 31, 2014
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Assets
	Equity securities	$	—		$	—		$	1,177,796		$	—		$	1,177,796
	Debt securities	—			—			569,648			—			569,648
	Other investments	—			—			83,394			—			83,394
	Total investments in securities and commodities	—			—			1,830,838			—			1,830,838
	Cash and cash equivalents	140			—			28,594			—			28,734
	Restricted cash and cash equivalents	—			—			417,307			—			417,307
	Investment in subsidiaries	1,451,060			—						(1,451,060		)	—
	Due from brokers	—			—			58,241			—			58,241
	Securities purchased under an agreement to sell	—			—			29,852			—			29,852
	Derivative assets, at fair value	—			—			21,130			—			21,130
	Interest and dividends receivable	—			—			2,602			—			2,602
	Reinsurance balances receivable	—			—			303,649			—			303,649
	Deferred acquisition costs, net	—			—			155,901			—			155,901
	Loss and loss adjustment expenses recoverable	—			—			814			—			814
	Other assets	600			666			2,246			—			3,512
	Amounts due from affiliates	1,339			(403		)	(936		)	—			—
	Total assets	$	1,453,139		$	263		$	2,850,238		$	(1,451,060	)	$	2,852,580
	Liabilities and shareholders’ equity
	Liabilities
	Accounts payable and accrued expenses	$	1,226		$	518		$	8,341		$	—		$	10,085
	Reinsurance balances payable	—			—			27,040			—			27,040
	Deposit liabilities	—			—			145,430			—			145,430
	Unearned premium reserves	—			—			433,809			—			433,809
	Loss and loss adjustment expense reserves	—			—			277,362			—			277,362
	Securities sold, not yet purchased, at fair value	—			—			82,485			—			82,485
	Due to brokers	—			—			312,609			—			312,609
	Derivative liabilities, at fair value	—			—			11,015			—			11,015
	Interest and dividends payable	—			—			697			—			697
	Total liabilities	1,226			518			1,298,788			—			1,300,532
	Shareholders' equity
	Common shares	10,447			—			1,251			(1,251		)	10,447
	Additional paid-in capital	1,065,489			—			1,072,671			(1,072,671		)	1,065,489
	Retained earnings	375,977			(255		)	377,393			(377,138		)	375,977
	Shareholders’ equity attributable to shareholders	1,451,913			(255		)	1,451,315			(1,451,060		)	1,451,913
	Non-controlling interests	—			—			100,135			—			100,135
	Total shareholders’ equity	1,451,913			(255		)	1,551,450			(1,451,060		)	1,552,048
	Total liabilities and shareholders’ equity	$	1,453,139		$	263		$	2,850,238		$	(1,451,060	)	$	2,852,580
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of December 31, 2013
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Assets
	Equity securities	$	—		$	—		$	954,111		$	—		$	954,111
	Debt securities	—			—			441,424			—			441,424
	Other investments	—			—			65,329			—			65,329
	Total investments in securities and commodities	—			—			1,460,864			—			1,460,864
	Cash and cash equivalents	294			—			31,331			—			31,625
	Restricted cash and cash equivalents	—			—			193,577			—			193,577
	Investment in subsidiaries	1,394,644			—			—			(1,394,644		)	—
	Due from brokers	—			—			98,386			—			98,386
	Securities purchased under an agreement to sell	—			—			38,147			—			38,147
	Derivative assets, at fair value	—			—			39,045			—			39,045
	Interest and dividends receivable	—			—			2,615			—			2,615
	Reinsurance balances receivable	—			—			191,763			—			191,763
Deferred acquisition costs, net	—			—			91,193			—			91,193
Loss and loss adjustment expenses recoverable	—			—			9,277			—			9,277
Other assets	720			—			2,678			—			3,398
Amounts due from affiliates	417			—			(417		)	—			—
Total assets	$	1,396,075		$	—		$	2,158,459		$	(1,394,644	)	$	2,159,890
Liabilities and shareholders’ equity
Liabilities
Accounts payable and accrued expenses	$	242		$	—		$	9,214		$	—		$	9,456
Reinsurance balances payable	—			—			9,081			—			9,081
Deposit liabilities	—			—			120,946			—			120,946
Unearned premium reserves	—			—			265,187			—			265,187
Loss and loss adjustment expense reserves	—			—			134,331			—			134,331
Securities sold, not yet purchased, at fair value	—			—			56,056			—			56,056
Due to brokers	—			—			44,870			—			44,870
Derivative liabilities, at fair value	—			—			8,819			—			8,819
Interest and dividends payable	—			—			748			—			748
Amounts due to affiliates	4,172			—			(4,172		)	—			—
Total liabilities	4,414			—			645,080			—			649,494
Shareholders’ equity
Common shares	10,389			—			1,251			(1,251		)	10,389
Additional paid-in capital	1,055,690			—			1,064,493			(1,064,493		)	1,055,690
Retained earnings	325,582			—			328,900			(328,900		)	325,582
Shareholders’ equity attributable to shareholders	1,391,661			—			1,394,644			(1,394,644		)	1,391,661
Non-controlling interests	—			—			118,735			—			118,735
Total shareholders’ equity	1,391,661			—			1,513,379			(1,394,644		)	1,510,396
Total liabilities and shareholders’ equity	$	1,396,075		$	—		$	2,158,459		$	(1,394,644	)	$	2,159,890
Condensed Consolidating Statement of Income
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING STATEMENT OF INCOME
	For the year ended December 31, 2014
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Revenues
	Gross premiums written	$	—		$	—		$	613,300		$	—		$	613,300
	Gross premiums ceded	—			—			(150		)	—			(150		)
	Net premiums written	—			—			613,150			—			613,150
	Change in net unearned premium reserves	—			—			(168,618		)	—			(168,618		)
	Net premiums earned	—			—			444,532			—			444,532
	Net investment income	—			—			85,582			—			85,582
	Equity in earnings of subsidiaries	56,238			—			—			(56,238		)	—
	Total revenues	56,238			—			530,114			(56,238		)	530,114
	Expenses
	Loss and loss adjustment expenses incurred, net	—			—			283,147			—			283,147
	Acquisition costs, net	—			—			137,206			—			137,206
	General and administrative expenses	5,843			255			33,910			—			40,008
	Other expenses	—			—			7,395			—			7,395
	Total expenses	5,843			255			461,658			—			467,756
	Income before income tax expense	50,395			(255		)	68,456			(56,238		)	62,358
	Income tax expense	—			—			(5,648		)	—			(5,648		)
	Income including non-controlling interests	50,395			(255		)	62,808			(56,238		)	56,710
	Income attributable to non-controlling interests	—			—			(6,315		)	—			(6,315		)
	Net income (loss)	$	50,395		$	(255	)	$	56,493		$	(56,238	)	$	50,395
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING STATEMENT OF INCOME
	For the year ended December 31, 2013
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Revenues
	Gross premiums written	$	—		$	—		$	401,937		$	—		$	401,937
	Gross premiums ceded	—			—			(9,975		)	—			(9,975		)
	Net premiums written	—			—			391,962			—			391,962
	Change in net unearned premium reserves	—			—			(171,295		)	—			(171,295		)
	Net premiums earned	—			—			220,667			—			220,667
	Net investment income	—			—			258,125			—			258,125
	Equity in earnings of subsidiaries	228,646			—			—			(228,646		)	—
	Total revenues	228,646			—			478,792			(228,646		)	478,792
	Expenses
	Loss and loss adjustment expenses incurred, net	—			—			139,812			—			139,812
	Acquisition costs, net	—			—			67,944			—			67,944
	General and administrative expenses	1,335			—			31,701			—			33,036
	Other expenses	—			—			4,922			—			4,922
	Total expenses	1,335			—			244,379			—			245,714
	Income including non-controlling interests	227,311			—			234,413			(228,646		)	233,078
	Income attributable to non-controlling interests	—			—			(5,767		)	—			(5,767		)
	Net income	$	227,311		$	—		$	228,646		$	(228,646	)	$	227,311
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING STATEMENT OF INCOME
	For the year ended December 31, 2012
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Revenues
	Gross premiums written	$	—		$	—		$	190,374		$	—		$	190,374
	Gross premiums ceded	—			—			—			—			—
	Net premiums written	—			—			190,374			—			190,374
	Change in net unearned premium reserves	—			—			(93,893		)	—			(93,893		)
	Net premiums earned	—			—			96,481			—			96,481
	Net investment income	—			—			136,868			—			136,868
Equity in earnings of subsidiaries	101,346			—			—			(101,346		)	—
Total revenues	101,346			—			233,349			(101,346		)	233,349
Expenses
Loss and loss adjustment expenses incurred, net	—			—			80,306			—			80,306
Acquisition costs, net	—			—			24,604			—			24,604
General and administrative expenses	1,945			—			25,431			—			27,376
Other expenses	—			—			446			—			446
Total expenses	1,945			—			130,787			—			132,732
Income including non-controlling interests	99,401			—			102,562			(101,346		)	100,617
Income attributable to non-controlling interests	—			—			(1,216		)	—			(1,216		)
Net income	$	99,401		$	—		$	101,346		$	(101,346	)	$	99,401
Condensed Consolidating Statement of Cash Flows
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	For the year ended December 31, 2014
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Operating activities
	Income including non-controlling interests	$	50,395		$	(255	)	$	62,808		$	(56,238	)	$	56,710
	Adjustments to reconcile income including non-controlling interests to net cash provided by operating activities
	Equity in earnings of subsidiaries	(56,238		)	—			—			56,238			—
	Share compensation expense	1,080			—			8,178			—			9,258
	Interest expense on deposit liabilities	—			—			4,346			—			4,346
	Net unrealized gain on investments and derivatives	—			—			85,057			—			85,057
	Net realized gain on investments and derivatives	—			—			(193,957		)	—			(193,957		)
	Amortization of premium and accretion of discount, net	—			—			(1,044		)	—			(1,044		)
	Changes in assets and liabilities:
	Reinsurance balances receivable	—			—			(111,886		)	—			(111,886		)
	Deferred acquisition costs, net	—			—			(64,708		)	—			(64,708		)
	Loss and loss adjustment expenses recoverable	—			—			8,463			—			8,463
	Other assets	120			(666		)	432			—			(114		)
	Interest and dividends receivable, net	—			—			(38		)	—			(38		)
	Unearned premium reserves	—			—			168,622			—			168,622
	Loss and loss adjustment expense reserves	—			—			143,031			—			143,031
	Accounts payable and accrued expenses	984			518			(873		)	—			629
	Reinsurance balances payable	—			—			18,061			—			18,061
	Amounts due from affiliates	(922		)	403			519			—			—
	Amounts due to affiliates	(4,172		)	—			4,172			—			—
	Net cash provided by operating activities	(8,753		)	—			131,183			—			122,430
	Investing activities
	Purchases of investments	—			—			(3,114,906		)	—			(3,114,906		)
	Proceeds from sales of investments	—			—			2,857,404			—			2,857,404
	Purchases of investments to cover short sales	—			—			(232,568		)	—			(232,568		)
	Proceeds from short sales of investments	—			—			278,569			—			278,569
	Change in due to/from brokers, net	—			—			307,884			—			307,884
	Increase in securities purchased under agreement to sell	—			—			8,294			—			8,294
	Change in restricted cash and cash equivalents	—			—			(223,730		)	—			(223,730		)
	Net cash used in investing activities	—			—			(119,053		)	—			(119,053		)
	Financing activities
	Proceeds from issuance of common shares, net of costs	599			—			—			—			599
	Increase in deposit liabilities	—			—			18,048			—			18,048
	Non-controlling interest in investment affiliate, net	—			—			(31,066		)	—			(31,066		)
	Non-controlling interest in Catastrophe Fund	—			—			6,151			—			6,151
	Dividend received by (paid to) parent	8,000			—			(8,000		)	—			—
	Net cash provided by financing activities	8,599			—			(14,867		)	—			(6,268		)
	Net (decrease) increase in cash and cash equivalents	(154		)	—			(2,737		)	—			(2,891		)
	Cash and cash equivalents at beginning of period	294			—			31,331			—			31,625
	Cash and cash equivalents at end of period	$	140		$	—		$	28,594		$	—		$	28,734
	THIRD POINT REINSURANCE LTD.
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	For the year ended December 31, 2013
	(expressed in thousands of U.S. dollars)
		Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
		Guarantor
	Operating activities
	Income including non-controlling interests	$	227,311		$	—		$	234,413		$	(228,646	)	$	233,078
	Adjustments to reconcile income including non-controlling interests to net cash provided by operating activities
	Equity in earnings of subsidiaries	(228,646		)	—			—			228,646			—
	Share compensation expense	—			—			9,800			—			9,800
	Interest expense on deposit liabilities	—			—			4,271			—			4,271
	Net unrealized gain on investments and derivatives	—			—			(78,490		)	—			(78,490		)
	Net realized gain on investments and derivatives	—			—			(236,333		)	—			(236,333		)
	Amortization of premium and accretion of discount, net	—			—			(262		)	—			(262		)
	Changes in assets and liabilities:
Reinsurance balances receivable	—			—			(107,483		)	—			(107,483		)
Deferred acquisition costs, net	—			—			(45,810		)	—			(45,810		)
Loss and loss adjustment expenses recoverable	—			—			(9,277		)	—			(9,277		)
Other assets	(686		)	—			411			—			(275		)
Interest and dividends receivable, net	—			—			(1,034		)	—			(1,034		)
Unearned premium reserves	—			—			171,294			—			171,294
Loss and loss adjustment expense reserves	—			—			67,060			—			67,060
Accounts payable and accrued expenses	(65		)	—			4,154			—			4,089
Reinsurance balances payable	—			—			9,081			—			9,081
Amounts due from affiliates	353			—			(353		)	—			—
Amounts due to affiliates	2,020			—			(2,020		)	—			—
Net cash provided by operating activities	287			—			19,422			—			19,709
Investing activities
Purchases of investments	—			—			(2,172,077		)	—			(2,172,077		)
Proceeds from sales of investments	—			—			1,943,655			—			1,943,655
Purchases of investments to cover short sales	—			—			(407,965		)	—			(407,965		)
Proceeds from short sales of investments	—			—			290,770			—			290,770
Change in due to/from brokers, net	—			—			12,162			—			12,162
Increase in securities purchased under agreement to sell	—			—			22,261			—			22,261
Change in restricted cash and cash equivalents	—			—			(115,950		)	—			(115,950		)
Contributed capital (to) from subsidiaries	(286,257		)	—			286,257			—			—
Net cash used in investing activities	(286,257		)	—			(140,887		)	—			(427,144		)
Financing activities
Proceeds from issuance of common shares, net of costs	286,095			—			—			—			286,095
Increase in deposit liabilities	—			—			65,769			—			65,769
Non-controlling interest in investment affiliate, net	—			—			27,867			—			27,867
Non-controlling interest in Catastrophe Fund	—			—			25,324			—			25,324
Net cash provided by financing activities	286,095			—			118,960			—			405,055
Net (decrease) increase in cash and cash equivalents	125			—			(2,505		)	—			(2,380		)
Cash and cash equivalents at beginning of period	169			—			33,836			—			34,005
Cash and cash equivalents at end of period	$	294		$	—		$	31,331		$	—		$	31,625
See note 2 for explanation of certain changes made in the presentation of the Company’s consolidated statements of cash flows for the years ended December 31, 2013 and 2012 to conform to the 2014 presentation.
THIRD POINT REINSURANCE LTD.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the year ended December 31, 2012
(expressed in thousands of U.S. dollars)
	Parent			Issuer of Debt			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Guarantor
Operating activities
Income including non-controlling interests	$	99,401		$	—		$	102,562		$	(101,346	)	$	100,617
Adjustments to reconcile income including non-controlling interests to net cash provided by operating activities													—
Equity in earnings of subsidiaries	(101,346		)	—			—			101,346			—
Share compensation expense	—			—			6,408			—			6,408
Interest expense on deposit liabilities	—			—			296			—			296
Net unrealized gain on investments and derivatives	—			—			(113,271		)	—			(113,271		)
Net realized gain on investments and derivatives	—			—			(55,632		)	—			(55,632		)
Amortization of premium and accretion of discount, net	—			—			(2,434		)	—			(2,434		)
Changes in assets and liabilities:													—
Reinsurance balances receivable	—			—			(84,280		)	—			(84,280		)
Deferred acquisition costs, net	—			—			(45,383		)	—			(45,383		)
Other assets	(33		)	—			(1,668		)	—			(1,701		)
Interest and dividends receivable, net	—			—			(833		)	—			(833		)
Unearned premium reserves	—			—			93,893			—			93,893
Loss and loss adjustment expense reserves	—			—			67,271			—			67,271
Accounts payable and accrued expenses	682			—			3,475			—			4,157
Amounts due from affiliates	(770		)	—			770			—			—
Amounts due to affiliates	2,152			—			(2,152		)	—			—
Net cash provided by (used in) operating activities	86			—			(30,978		)	—			(30,892		)
Investing activities
Purchases of investments	—			—			(2,317,234		)	—			(2,317,234		)
Proceeds from sales of investments	—			—			1,521,110			—			1,521,110
Purchases of investments to cover short sales	—			—			(535,443		)	—			(535,443		)
Proceeds from short sales of investments	—			—			729,182			—			729,182
Change in due to/from brokers, net	—			—			(65,678		)	—			(65,678		)
Increase in securities purchased under agreement to sell	—			—			(60,408		)	—			(60,408		)
Change in restricted cash and cash equivalents	—			—			(77,627		)	—			(77,627		)
Contributed capital (to) from subsidiaries	(170,110		)	—			170,110			—			—
Net cash used in investing activities	(170,110		)	—			(635,988		)	—			(806,098		)
Financing activities
Proceeds from issuance of common shares, net of costs	158,593			—			—			—			158,593
Increase in deposit liabilities	—			—			50,000						50,000
Non-controlling interest in investment affiliate, net	—			—			38,913			—			38,913
Non-controlling interest in Catastrophe Fund	—			—			19,646			—			19,646
Non-controlling interest in Catastrophe Manager	—			—			2			—			2
Net cash provided by financing activities	158,593			—			108,561			—			267,154
Net (decrease) increase in cash and cash equivalents	(11,431		)	—			(558,405		)	—			(569,836		)
Cash and cash equivalents at beginning of period	11,600			—			592,241			—			603,841
Cash and cash equivalents at end of period	$	169		$	—		$	33,836		$	—		$	34,005

Quarterly_Financial_Results_Ta

Quarterly Financial Results (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of quarterly financial results
		Quarters ended
		31-Dec-14			30-Sep-14			30-Jun-14			31-Mar-14
		($ in thousands)
	Revenues
	Gross premiums written	$	253,802		$	126,403		$	145,508		$	87,587
	Gross premiums ceded	—			(150		)	—			—
	Net premiums written	253,802			126,253			145,508			87,587
	Change in net unearned premium reserves	(70,230		)	(17,305		)	(66,758		)	(14,325		)
	Net premiums earned	183,572			108,948			78,750			73,262
	Net investment income (loss)	(6,490		)	1,552			40,485			50,035
	Total revenues	177,082			110,500			119,235			123,297
	Expenses
	Loss and loss adjustment expenses incurred, net	132,364			60,115			44,409			46,259
	Acquisition costs, net	43,875			38,317			29,583			25,431
	General and administrative expenses	10,310			10,124			9,549			10,025
	Other expenses	2,606			2,982			1,020			787
	Total expenses	189,155			111,538			84,561			82,502
	Income (loss) before income tax expense	(12,073		)	(1,038		)	34,674			40,795
	Income tax expense	(1,731		)	(1,542		)	(2,375		)	—
	Net income (loss) including non-controlling interests	(13,804		)	(2,580		)	32,299			40,795
	Income (loss) attributable to non-controlling interests	(875		)	(3,417		)	(1,007		)	(1,016		)
	Net income (loss)	$	(14,679	)	$	(5,997	)	$	31,292		$	39,779
	Earnings (loss) per share
	Basic	$	(0.14	)	$	(0.06	)	$	0.3		$	0.38
	Diluted	$	(0.14	)	$	(0.06	)	$	0.29		$	0.37
	Weighted average number of common shares used in the determination of earnings per share
	Basic	103,324,616			103,295,920			103,264,616			103,264,616
	Diluted	103,324,616			103,295,920			106,433,881			103,413,580
		Quarters ended
		December 31, 2013			September 30, 2013			June 30, 2013			March 31, 2013
		($ in thousands)
	Revenues
	Gross premiums written	$	162,277		$	45,425		$	98,215		$	96,020
	Gross premiums ceded	—			—			—			(9,975		)
	Net premiums written	162,277			45,425			98,215			86,045
	Change in net unearned premium reserves	(103,767		)	20,904			(35,928		)	(52,504		)
	Net premiums earned	58,510			66,329			62,287			33,541
	Net investment income	89,321			54,617			32,826			81,361
	Total revenues	147,831			120,946			95,113			114,902
	Expenses
	Loss and loss adjustment expenses incurred, net	36,133			39,349			45,692			18,638
	Acquisition costs, net	18,833			21,117			14,921			13,073
	General and administrative expenses	8,965			9,846			7,217			7,008
	Other expenses	2,247			1,246			759			670
	Total expenses	66,178			71,558			68,589			39,389
	Net income including non-controlling interests	81,653			49,388			26,524			75,513
	Income attributable to non-controlling interests	(1,565		)	(2,818		)	(301		)	(1,083		)
	Net income	$	80,088		$	46,570		$	26,223		$	74,430
	Earnings per share
	Basic	$	0.77		$	0.52		$	0.33		$	0.94
	Diluted	$	0.75		$	0.51		$	0.33		$	0.93
	Weighted average number of common shares used in the determination of earnings per share
	Basic	103,264,616			89,620,394			78,432,132			78,432,132
	Diluted	106,390,339			90,915,805			79,254,268			79,083,675

Organization_Details

Organization (Details) (IPO, USD $)	0 Months Ended
In Millions, except Share data, unless otherwise specified	Aug. 20, 2013
IPO
Organization [Line Items]
Issuance of common shares (in shares)	24,832,484
Sale of stock, price per share (in dollars per share)	$12.50
Sale of stock, net proceeds	$286

Significant_accounting_policie2

Significant accounting policies - Embedded derivatives and Offering costs (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Premium deficiency loss	$0								$0
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expenses	2,606,000	2,982,000	1,020,000	787,000	2,247,000	1,246,000	759,000	670,000	7,395,000	4,922,000	446,000
Interest expense
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Capitalized debt issuance costs	$600,000								$600,000

Significant_accounting_policie3

Significant accounting policies - Income taxes and uncertain tax positions (Details) (USD $)	3 Months Ended				12 Months Ended			0 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 01, 2014	Mar. 31, 2014	Apr. 01, 2015
Income Tax Contingency [Line Items]
Income tax expense	$1,731,000	$1,542,000	$2,375,000	$0	$5,648,000	$0	$0
Provision for uncertain tax positions	2,600,000				2,600,000
Income Tax Expense [Member]
Income Tax Contingency [Line Items]
Investment income, tax expense					-3,000,000	-1,100,000	-1,800,000
TPRUK [Member] | Her Majesty's Revenue and Customs (HMRC) [Member]
Income Tax Contingency [Line Items]
Corporate income tax rate								21.00%	23.00%
Income tax expense					$20,000
TPRUK [Member] | Her Majesty's Revenue and Customs (HMRC) [Member] | Scenario, Forecast [Member]
Income Tax Contingency [Line Items]
Corporate income tax rate										20.00%

Segment_information_Details

- Segment information (Details)	12 Months Ended
	Dec. 31, 2014
	segment
Accounting Policies [Abstract]
Number of operating segments	2

Restricted_cash_and_cash_equiv2

Restricted cash and cash equivalents (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	$417,307	$193,577
Restricted cash securing collateralized reinsurance contracts written by the Catastrophe Reinsurer (1)
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	108,544	93,014
Restricted cash securing letter of credit facilities (2)
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	218,963	100,563
Restricted cash securing other reinsurance contracts (3)
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	$89,800	$0

Reinsurance_premiums_ceded_Det

Reinsurance premiums ceded (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Ceded Credit Risk [Line Items]
Loss and loss expenses recovered	$400,000	$9,300,000	$0
Loss and loss adjustment expenses recoverable	$814,000	$9,277,000	$0	$0
AM Best, A Rating
Ceded Credit Risk [Line Items]
Number of retrocessionaire	1

Investments_Schedule_of_the_se

Investments - Schedule of the separate account managed by TP LLC (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets
Total assets	$2,249,665	$1,741,411
Liabilities and shareholders’ equity
Total liabilities and shareholders' equity	447,482	181,969
Total net investments managed by Third Point LLC	1,802,183	1,559,442
Total investments in securities and commodities
Assets
Total assets	1,828,761	1,460,864
Cash and cash equivalents
Assets
Total assets	3	869
Restricted cash and cash equivalents
Assets
Total assets	308,763	100,563
Due from brokers
Assets
Total assets	58,241	98,386
Net investment gains (losses) on securities purchased under and agreement to resell
Assets
Total assets	29,852	38,147
Derivative assets
Assets
Total assets	21,130	39,045
Interest and dividends receivable
Assets
Total assets	2,590	2,604
Other assets
Assets
Total assets	325	933
Accounts payable and accrued expenses
Liabilities and shareholders’ equity
Total liabilities and shareholders' equity	464	1,759
Net investment gains (losses) on securities sold, not yet purchased
Liabilities and shareholders’ equity
Total liabilities and shareholders' equity	82,485	56,056
Due to brokers
Liabilities and shareholders’ equity
Total liabilities and shareholders' equity	312,609	44,870
Derivative liabilities
Liabilities and shareholders’ equity
Total liabilities and shareholders' equity	10,985	8,819
Interest and dividends payable
Liabilities and shareholders’ equity
Total liabilities and shareholders' equity	697	748
Non-controlling interest
Liabilities and shareholders’ equity
Total liabilities and shareholders' equity	$40,242	$69,717

Investments_Schedule_of_invest

Investments - Schedule of investments, categorized by the level of the fair value hierarchy (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets
Equity securities	$1,173,635	$857,817
Private common equity securities	4,161	96,294
Total equities	1,177,796	954,111
Asset-backed securities	400,234	325,533
Bank debts	2,395	8,017
Corporate bonds	60,594	86,749
Municipal bonds	3,094	10,486
Sovereign debt	103,331	10,639
Total debt securities	569,648	441,424
Investments in limited partnerships	62,110	34,578
Options		13,069
Options	6,996	1
Rights and warrants	1,843
Trade claims	10,368	17,681
Catastrophe bond	2,077
Total other investments	83,394	65,329
Derivative assets, at fair value	21,130	39,045
Total assets	1,851,968	1,499,909
Liabilities
Equity securities	33,222	5,207
Sovereign debt	29,350	37,592
Corporate bonds	13,312	3,372
Options	6,601	9,885
Total securities sold, not yet purchased	82,485	56,056
Derivative liabilities, at fair value	11,015	8,819
Derivative liabilities (embedded)	9,289	4,430
Total liabilities	102,789	69,305
Quoted prices in active markets (Level 1)
Assets
Equity securities	1,158,428	839,903
Private common equity securities	0	0
Total equities	1,158,428	839,903
Asset-backed securities	0	0
Bank debts	0	0
Corporate bonds	0	0
Municipal bonds	0	0
Sovereign debt	0	0
Total debt securities	0	0
Investments in limited partnerships	0	0
Options		6,284
Options	3,205	1
Rights and warrants	1,843
Trade claims	0	0
Catastrophe bond	0
Total other investments	5,048	6,285
Derivative assets, at fair value	380	321
Total assets	1,163,856	846,509
Liabilities
Equity securities	33,222	5,207
Sovereign debt	0	0
Corporate bonds	0	0
Options	3,755	4,714
Total securities sold, not yet purchased	36,977	9,921
Derivative liabilities, at fair value	505	441
Derivative liabilities (embedded)	0	0
Total liabilities	37,482	10,362
Significant other observable inputs (Level 2)
Assets
Equity securities	15,207	17,914
Private common equity securities	2,718	94,282
Total equities	17,925	112,196
Asset-backed securities	395,514	325,133
Bank debts	2,395	8,017
Corporate bonds	56,795	82,139
Municipal bonds	3,094	10,486
Sovereign debt	103,331	10,639
Total debt securities	561,129	436,414
Investments in limited partnerships	55,756	29,286
Options		6,785
Options	3,791	0
Rights and warrants	0
Trade claims	10,368	17,681
Catastrophe bond	2,077
Total other investments	71,992	53,752
Derivative assets, at fair value	20,750	38,724
Total assets	671,796	641,086
Liabilities
Equity securities	0	0
Sovereign debt	29,350	37,592
Corporate bonds	13,312	3,372
Options	2,846	5,171
Total securities sold, not yet purchased	45,508	46,135
Derivative liabilities, at fair value	9,548	8,378
Derivative liabilities (embedded)	0	0
Total liabilities	55,056	54,513
Significant unobservable inputs (Level 3)
Assets
Equity securities	0	0
Private common equity securities	1,443	2,012
Total equities	1,443	2,012
Asset-backed securities	4,720	400
Bank debts	0	0
Corporate bonds	3,799	4,610
Municipal bonds	0	0
Sovereign debt	0	0
Total debt securities	8,519	5,010
Investments in limited partnerships	6,354	5,292
Options		0
Options	0	0
Rights and warrants	0
Trade claims	0	0
Catastrophe bond	0
Total other investments	6,354	5,292
Derivative assets, at fair value	0	0
Total assets	16,316	12,314
Liabilities
Equity securities	0	0
Sovereign debt	0	0
Corporate bonds	0	0
Options	0	0
Total securities sold, not yet purchased	0	0
Derivative liabilities, at fair value	962	0
Derivative liabilities (embedded)	9,289	4,430
Total liabilities	$10,251	$4,430

Investments_Schedule_of_reconc

Investments - Schedule of reconciliation of the balances for all investments measured at fair value using significant unobservable inputs (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets
Asset fair value, beginning balance	$12,314	$3,857
Transfers in to (out of) Level 3	2,455	-2,678
Purchases	8,995	11,367
Sales	-3,674	-1,746
Realized and Unrealized Gains (Losses)	-3,774	1,514
Asset fair value, ending balance	16,316	12,314
Liabilities
Liability fair value, beginning balance	-4,430	-2,510
Transfers in to (out of) Level 3	0	0
Purchases	0	0
Sales	-4,006	-5,795
Realized and Unrealized Gains(Losses) (1)	-1,815	3,875
Liability fair value, ending balance	-10,251	-4,430
Derivative liabilities (free standing) [Member]
Liabilities
Liability fair value, beginning balance	0	0
Transfers in to (out of) Level 3	0	0
Purchases	0	0
Sales	-1,135	-4,335
Realized and Unrealized Gains(Losses) (1)	173	4,335
Liability fair value, ending balance	-962	0
Derivative liabilities (embedded)
Liabilities
Liability fair value, beginning balance	-4,430	-2,510
Transfers in to (out of) Level 3	0	0
Purchases	0	0
Sales	-2,871	-1,460
Realized and Unrealized Gains(Losses) (1)	-1,988	-460
Liability fair value, ending balance	-9,289	-4,430
Asset-backed securities
Assets
Asset fair value, beginning balance	400	0
Transfers in to (out of) Level 3	2,062	133
Purchases	5,257	552
Sales	-2,898	-12
Realized and Unrealized Gains (Losses)	-101	-273
Asset fair value, ending balance	4,720	400
Bank debt
Assets
Asset fair value, beginning balance		54
Transfers in to (out of) Level 3		-54
Purchases		0
Sales		0
Realized and Unrealized Gains (Losses)		0
Asset fair value, ending balance		0
Corporate bonds
Assets
Asset fair value, beginning balance	4,610	1,046
Transfers in to (out of) Level 3	0	0
Purchases	822	4,094
Sales	-776	-1,392
Realized and Unrealized Gains (Losses)	-857	862
Asset fair value, ending balance	3,799	4,610
Private common equity securities
Assets
Asset fair value, beginning balance	2,012	2,757
Transfers in to (out of) Level 3	393	-2,757
Purchases	0	2,031
Sales	0	0
Realized and Unrealized Gains (Losses)	-962	-19
Asset fair value, ending balance	1,443	2,012
Investments in limited partnerships
Assets
Asset fair value, beginning balance	5,292	0
Transfers in to (out of) Level 3	0	0
Purchases	2,916	4,690
Sales	0	-342
Realized and Unrealized Gains (Losses)	-1,854	944
Asset fair value, ending balance	$6,354	$5,292

Investments_Narrative_Details

Investments - Narrative (Details) (USD $)	0 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 18, 2014
Fair Value Disclosures [Abstract]
Securities valued based on dealer quotes or other quoted market prices for similar securities		$434.40	$483.20
Percent of securities valued based on dealer quotes or other quoted market prices for similar securities		23.50%	33.10%
Securities sold, not yet purchased, valued based on dealer quotes or other quoted market prices for similar securities		1.3	41
Percent of securities sold, not yet purchased, valued based on dealer quotes or other quoted market prices for similar securities		1.40%	73.10%
Private common equity securities		2.3	3.3
Securities fair valued by using information obtained from the Company's Investment Manager representing less than 1% of total investments in securities and commodities		1.00%	1.00%
Asset transfers from level 1 to level 2		0	0
Liability transfers from level 1 to level 2		0	0
Liability transfers from level 2 to level 1		0	0
Total unrealized gain (loss) related to fair value assets using significant unobservable inputs (Level 3		-7.4	1	-0.7
Investment [Line Items]
Asset transfers from level 2 to level 1			0
Equity securities
Investment [Line Items]
Asset transfers from level 2 to level 1		86.6
Kiskadee Re Ltd. [Member]
Investment [Line Items]
Committed capital					25
Subsequent event | Kiskadee Re Ltd. [Member]
Investment [Line Items]
Committed capital	20
Capital distributed	$5

Securities_purchased_under_an_1

Securities purchased under an agreement to sell (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investment Holdings [Line Items]
Reverse repurchase agreements outstanding	$29.90	$38.10
Securities received as collateral	29.6	37.6
Reverse repurchase agreements
Investment Holdings [Line Items]
Foreign currency gain (loss)	($4.10)	$1.90	$0.60
Minimum
Investment Holdings [Line Items]
Maturity term for reverse repurchase agreements	30 days
Maximum
Investment Holdings [Line Items]
Maturity term for reverse repurchase agreements	90 days

Due_fromto_brokers_Details

Due from/to brokers (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Due to and from Broker-Dealers and Clearing Organizations [Abstract]
Due to brokers	$1,100,000	$268,500,000
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	417,307,000	193,577,000
Letter of credit facilities and certain reinsurance contracts
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	$308,800,000

Derivatives_Schedule_of_listin

Derivatives - Schedule of listing currency, fair value and notional amounts of derivative instruments (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Derivative assets, at fair value	$21,130	$39,045
Derivative Assets, Notional Amount	836,304	880,197
Derivative liabilities, at fair value	11,015	8,819
Derivative Liabilities, Notional Amount	757,406	1,089,050
Realized Gain (Loss) on Derivatives	18,520	19,331	-736
Unrealized Gain (Loss) on Derivatives	-8,127	9,926	6,529
Commodity Future Options | Long Contracts / Purchased
Derivative [Line Items]
Derivative assets, at fair value		256
Derivative Assets, Notional Amount		12,325
Derivative liabilities, at fair value	285
Derivative Liabilities, Notional Amount	12,012
Realized Gain (Loss) on Derivatives	0	0	1,710
Unrealized Gain (Loss) on Derivatives	0	0	0
Commodity Future Options | Short Contracts / Sold
Derivative [Line Items]
Derivative assets, at fair value	269
Derivative Assets, Notional Amount	25,168
Derivative liabilities, at fair value		148
Derivative Liabilities, Notional Amount		35,484
Realized Gain (Loss) on Derivatives	-11	437	127
Unrealized Gain (Loss) on Derivatives	-143	-212	212
Credit Default Swaps - Protection Purchased
Derivative [Line Items]
Derivative assets, at fair value	9,456	15,397
Derivative Assets, Notional Amount	89,772	109,520
Derivative liabilities, at fair value	3,230	2,634
Derivative Liabilities, Notional Amount	49,465	59,446
Realized Gain (Loss) on Derivatives	-5,627	4,243	1,239
Unrealized Gain (Loss) on Derivatives	1,018	-10,943	265
Credit Default Swaps - Protection Sold
Derivative [Line Items]
Derivative assets, at fair value	205	1,157
Derivative Assets, Notional Amount	2,084	9,557
Derivative liabilities, at fair value	1,319	348
Derivative Liabilities, Notional Amount	5,142	875
Realized Gain (Loss) on Derivatives	1,362	-4,845	0
Unrealized Gain (Loss) on Derivatives	-830	10,690	-212
Contracts for Differences | Long Contracts / Purchased
Derivative [Line Items]
Derivative assets, at fair value	263	10,549
Derivative Assets, Notional Amount	3,080	62,847
Derivative liabilities, at fair value	1,404	66
Derivative Liabilities, Notional Amount	48,152	14,607
Realized Gain (Loss) on Derivatives	-1,869	8,900	288
Unrealized Gain (Loss) on Derivatives	-11,621	6,172	4,203
Contracts for Differences | Short Contracts / Sold
Derivative [Line Items]
Derivative assets, at fair value	186	67
Derivative Assets, Notional Amount	6,428	2,758
Derivative liabilities, at fair value	130	425
Derivative Liabilities, Notional Amount	3,070	7,253
Realized Gain (Loss) on Derivatives	-3,873	1,219	931
Unrealized Gain (Loss) on Derivatives	413	-341	-29
Total Return Swaps | Long Contracts / Purchased
Derivative [Line Items]
Derivative assets, at fair value	43	2,950
Derivative Assets, Notional Amount	1,874	68,044
Derivative liabilities, at fair value	590	1,385
Derivative Liabilities, Notional Amount	11,233	24,807
Realized Gain (Loss) on Derivatives	18,782	1,026	-4,666
Unrealized Gain (Loss) on Derivatives	-2,112	1,786	-221
Total Return Swaps | Short Contracts / Sold
Derivative [Line Items]
Derivative assets, at fair value	34	3
Derivative Assets, Notional Amount	9,763	290
Derivative liabilities, at fair value		140
Derivative Liabilities, Notional Amount		5,037
Realized Gain (Loss) on Derivatives	-795	-557	2,569
Unrealized Gain (Loss) on Derivatives	171	76	-103
Interest Rate Swaps
Derivative [Line Items]
Derivative assets, at fair value		182
Derivative Assets, Notional Amount		212,594
Derivative liabilities, at fair value		821
Derivative Liabilities, Notional Amount		465,560
Realized Gain (Loss) on Derivatives	-743	949	312
Unrealized Gain (Loss) on Derivatives	639	-255	-383
Interest Rate Swaptions
Derivative [Line Items]
Derivative assets, at fair value		1,269
Derivative Assets, Notional Amount		54,884
Derivative liabilities, at fair value		174
Derivative Liabilities, Notional Amount		99,587
Realized Gain (Loss) on Derivatives	-455	-170	665
Unrealized Gain (Loss) on Derivatives	-918	913	5
Treasury Futures | Long Contracts / Purchased
Derivative [Line Items]
Realized Gain (Loss) on Derivatives	0	-119	0
Unrealized Gain (Loss) on Derivatives	0	0	0
Treasury Futures | Short Contracts / Sold
Derivative [Line Items]
Derivative assets, at fair value		108
Derivative Assets, Notional Amount		6,544
Derivative liabilities, at fair value	280
Derivative Liabilities, Notional Amount	10,119
Realized Gain (Loss) on Derivatives	-1,163	830	-1,233
Unrealized Gain (Loss) on Derivatives	-388	-456	564
Foreign Currency Forward
Derivative [Line Items]
Derivative assets, at fair value	4,241	1,332
Derivative Assets, Notional Amount	228,416	59,925
Realized Gain (Loss) on Derivatives	16,891	5,385	-1,270
Unrealized Gain (Loss) on Derivatives	3,617	-1,255	1,879
Foreign Currency Options
Derivative [Line Items]
Derivative liabilities, at fair value		709
Derivative Liabilities, Notional Amount		189,030
Realized Gain (Loss) on Derivatives	0	0	38
Unrealized Gain (Loss) on Derivatives	0	0	0
Foreign Currency Options | Long Contracts / Purchased
Derivative [Line Items]
Derivative assets, at fair value	6,355	5,563
Derivative Assets, Notional Amount	283,439	240,062
Realized Gain (Loss) on Derivatives	-265	5,920	-145
Unrealized Gain (Loss) on Derivatives	941	1,069	198
Foreign Currency Options | Short Contracts / Sold
Derivative [Line Items]
Derivative liabilities, at fair value	3,527	1,528
Derivative Liabilities, Notional Amount	144,257	178,476
Realized Gain (Loss) on Derivatives	-1,438	-3,787	0
Unrealized Gain (Loss) on Derivatives	63	-109	-87
Catastrophe Risk derivatives
Derivative [Line Items]
Derivative liabilities, at fair value	30
Derivative Liabilities, Notional Amount	6,000
Commodity Future | Long Contracts / Purchased
Derivative [Line Items]
Realized Gain (Loss) on Derivatives	-470	264	-17
Unrealized Gain (Loss) on Derivatives	-289	15	-10
Commodity Future | Short Contracts / Sold
Derivative [Line Items]
Derivative assets, at fair value	78
Derivative Assets, Notional Amount	186,280
Derivative liabilities, at fair value	220
Derivative Liabilities, Notional Amount	467,956
Realized Gain (Loss) on Derivatives	364	-81	0
Unrealized Gain (Loss) on Derivatives	101	168	0
Index Futures | Long Contracts / Purchased
Derivative [Line Items]
Realized Gain (Loss) on Derivatives	-840	-2,413	0
Unrealized Gain (Loss) on Derivatives	0	0	0
Index Futures | Short Contracts / Sold
Derivative [Line Items]
Derivative liabilities, at fair value		441
Derivative Liabilities, Notional Amount		8,888
Realized Gain (Loss) on Derivatives	-253	1,169	-314
Unrealized Gain (Loss) on Derivatives	441	-441	0
Reinsurance contract derivatives
Derivative [Line Items]
Realized Gain (Loss) on Derivatives	0	1,250	0
Unrealized Gain (Loss) on Derivatives	982	3,085	0
Bond Futures | Short Contracts / Sold
Derivative [Line Items]
Derivative assets, at fair value		212
Derivative Assets, Notional Amount		40,847
Realized Gain (Loss) on Derivatives	-1,077	-289	0
Unrealized Gain (Loss) on Derivatives	-212	-36	248
Sovereign Debt Futures | Short Contracts / Sold
Derivative [Line Items]
Realized Gain (Loss) on Derivatives	0	0	-970
Unrealized Gain (Loss) on Derivatives	0	0	0
Embedded derivatives in reinsurance contracts
Derivative [Line Items]
Derivative liabilities, at fair value	2,769
Derivative Liabilities, Notional Amount	15,000
Realized Gain (Loss) on Derivatives	0	0	0
Unrealized Gain (Loss) on Derivatives	102	0	0
Embedded derivatives in deposit contracts
Derivative [Line Items]
Derivative liabilities, at fair value	6,520	4,430
Derivative Liabilities, Notional Amount	75,000	75,000
Realized Gain (Loss) on Derivatives	0	0	0
Unrealized Gain (Loss) on Derivatives	-2,090	-460	-150
Derivative liabilities (embedded)
Derivative [Line Items]
Derivative liabilities, at fair value	9,289	4,430
Derivative Liabilities, Notional Amount	90,000	75,000
Realized Gain (Loss) on Derivatives	0	0	0
Unrealized Gain (Loss) on Derivatives	($1,988)	($460)	($150)

Derivatives_Narrative_Details

Derivatives - Narrative (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash collateral posted	$27.60	$35.40

Derivatives_Schedule_of_gross_

Derivatives - Schedule of gross and net amounts of derivative instruments that are subject to enforceable master netting arrangements or similar agreements (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	$21,130	$39,045
Financial Instruments	9,002	7,917
Cash Collateral Received	2,420	12,094
Net Amount	9,708	19,034
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	11,015	8,819
Financial Instruments		7,917
Cash Collateral Received		902
Net Amount		0
Counterparty 1
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	911	1,128
Financial Instruments	911	1,041
Cash Collateral Received	0	0
Net Amount	0	87
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	1,606	1,041
Financial Instruments	911	1,041
Cash Collateral Received	512	0
Net Amount	183	0
Counterparty 2
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	1,915	4,998
Financial Instruments	371	400
Cash Collateral Received	0	1,629
Net Amount	1,544	2,969
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	371	400
Financial Instruments	371	400
Cash Collateral Received	0	0
Net Amount	0	0
Counterparty 3
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	8,423	16,066
Financial Instruments	3,711	3,509
Cash Collateral Received	0	0
Net Amount	4,712	12,557
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	3,711	3,509
Financial Instruments	3,711	3,509
Cash Collateral Received	0	0
Net Amount	0	0
Counterparty 4
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	368	1,351
Financial Instruments	368	1,351
Cash Collateral Received	0	0
Net Amount	0	0
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	932	1,360
Financial Instruments	368	1,351
Cash Collateral Received	564	9
Net Amount	0	0
Counterparty 5
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	2,218	3,198
Financial Instruments	130	1,054
Cash Collateral Received	0	0
Net Amount	2,088	2,144
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	130	1,054
Financial Instruments	130	1,054
Cash Collateral Received	0	0
Net Amount	0	0
Counterparty 6
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	5,832	12,234
Financial Instruments	2,866	492
Cash Collateral Received	2,420	10,465
Net Amount	546	1,277
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	2,866	492
Financial Instruments	2,866	492
Cash Collateral Received	0	0
Net Amount	0	0
Counterparty 7
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	745	2
Financial Instruments	144	2
Cash Collateral Received	0	0
Net Amount	601	0
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	144	59
Financial Instruments	144	2
Cash Collateral Received	0	57
Net Amount	0	0
Counterparty 8
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	40	0
Financial Instruments	40	0
Cash Collateral Received	0	0
Net Amount	0	0
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	764	0
Financial Instruments	40	0
Cash Collateral Received	724	0
Net Amount	0	0
Counterparty 9
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	655	68
Financial Instruments	461	68
Cash Collateral Received	0	0
Net Amount	194	0
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	461	904
Financial Instruments	461	68
Cash Collateral Received	0	836
Net Amount	0	0
Counterparty 10
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Assets Presented in the Consolidated Balance Sheet	23
Financial Instruments	0
Cash Collateral Received	0
Net Amount	23
1 derivative not included as counterparty
Gross Amounts not Offset in the Consolidated Balance Sheet
Gross Amounts of Liabilities Presented in the Consolidated Balance Sheet	10,985
Financial Instruments	9,002
Cash Collateral Received	1,800
Net Amount	$183

Loss_and_loss_adjustment_expen2

Loss and loss adjustment expense reserves - Schedule of loss and loss adjustment expense reserves (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loss and Loss Adjustment Expense Reserves [Abstract]
Case loss and loss adjustment expense reserves	$64,343	$34,307
Incurred but not reported loss and loss adjustment expense reserves	213,019	100,024
Loss and loss adjustment expense reserves	$277,362	$134,331

Loss_and_loss_adjustment_expen3

Loss and loss adjustment expense reserves - Schedule of activity in the reserve for losses and loss adjustment expenses (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross reserves for loss and loss adjustment expenses, beginning of year	$134,331	$67,271	$0
Less: loss and loss adjustment expenses recoverable, beginning of year	-9,277	0	0
Net reserves for loss and loss adjustment expenses, beginning of year	125,054	67,271	0
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
Current year	286,706	144,509	80,306
Prior years'	-3,559	-4,697	0
Total incurred loss and loss adjustment expenses	283,147	139,812	80,306
Net loss and loss adjustment expenses paid in respect of losses occurring in:
Current year	-70,562	-27,528	-13,035
Prior years'	-61,091	-54,501	0
Total net paid losses	-131,653	-82,029	-13,035
Net reserve for loss and loss adjustment expenses, end of year	276,548	125,054	67,271
Plus: loss and loss adjustment expenses recoverable, end of year	814	9,277	0
Gross reserve for loss and loss adjustment expenses, end of year	277,362	134,331	67,271
Favorable Reserve Development
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
Prior years'	-700
Premium Adjustments on Certain Contracts
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
Prior years'	-2,900
Favorable Loss Experience on Several Contracts
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
Prior years'		-1,300
Premium Estimate Decreases Related to One Crop Contract
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
Prior years'		($3,400)

Management_performance_and_fou2

Management, performance and founders fees (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Third Point Advisors LLC
Related Party Transaction [Line Items]
Annual investment performance fee	20.00%
TP LLC and Various Third Point Re Founders
Related Party Transaction [Line Items]
Annual investment management fee	2.00%
Performance fees due under the Investment Agreement
Related Party Transaction [Line Items]
Non-controlling interests related to the performance fee payable to Third Point Advisors LLC	$19,900,000	$63,000,000
Net investment income
Related Party Transaction [Line Items]
Investment fee expenses	53,516,000	87,333,000	50,211,000
Net investment income | Third Point LLC
Related Party Transaction [Line Items]
Investment fee expenses	5,037,000	3,651,000	2,444,000
Net investment income | Founders
Related Party Transaction [Line Items]
Investment fee expenses	28,544,000	20,686,000	13,854,000
Net investment income | Third Point Advisors LLC
Related Party Transaction [Line Items]
Investment fee expenses	$19,935,000	$62,996,000	$33,913,000

Deposit_contracts_Details

Deposit contracts (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deposit Contracts, Liabilities [Roll Forward]
Balance, beginning of period	$120,946	$50,446	$0
Consideration received	18,398	66,369	50,000
Net investment expense allocation and change in fair value of embedded derivatives	6,436	4,731	446
Payments	-350	-600	0
Balance, end of period	$145,430	$120,946	$50,446

General_and_administrative_exp2

General and administrative expenses (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
General and Administrative Expense [Abstract]
Payroll and related									$16,047	$13,490	$13,780
Share compensation expenses									9,258	9,800	6,408
Legal and accounting									5,251	3,312	1,436
Travel and entertainment									3,065	2,473	1,887
IT related									1,621	1,290	1,417
Corporate insurance									1,123	744	365
Credit facility fees									1,023	605	677
Occupancy									532	420	595
Director and board costs									645	213	236
Other general and administrative expenses									1,443	689	575
General and administrative expenses	$10,310	$10,124	$9,549	$10,025	$8,965	$9,846	$7,217	$7,008	$40,008	$33,036	$27,376

Net_investment_income_Details

Net investment income (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net Investment Income [Abstract]
Net realized gains on investments and investment derivatives									$193,957	$236,333	$55,632
Net unrealized gains (losses) on investments and investment derivatives									-83,146	78,950	113,422
Net gain (loss) on foreign currencies									2,581	21,106	-219
Dividend and interest income									31,750	14,233	25,284
Dividends paid on securities sold, not yet purchased									-120	-722	-1,629
Management and performance fees									-53,516	-87,333	-50,211
Other expenses									-7,151	-8,863	-5,411
Net investment income on investments managed by Third Point LLC									84,355	253,704	136,868
Investment income on cash held by the Catastrophe Reinsurer and Catastrophe Fund									101	86	0
Net gain on catastrophe bond held by Catastrophe Reinsurer									144	0	0
Net gain on reinsurance contract derivatives written by the Catastrophe Reinsurer									982	4,335	0
Net investment income	-6,490	1,552	40,485	50,035	89,321	54,617	32,826	81,361	85,582	258,125	136,868
Net investment gains on equity securities
Schedule of Cost-method Investments [Line Items]
Change in net investment income									82,902	243,449	96,210
Net investment gains on debt securities
Schedule of Cost-method Investments [Line Items]
Change in net investment income									80,285	69,194	65,040
Net investment gains (losses) on other investments
Schedule of Cost-method Investments [Line Items]
Change in net investment income									-35,491	-5,045	7,386
Net investment gains on investment derivatives
Schedule of Cost-method Investments [Line Items]
Change in net investment income									10,393	29,257	5,793
Net investment gains (losses) on securities sold, not yet purchased
Schedule of Cost-method Investments [Line Items]
Change in net investment income									4,334	-5,974	17,076
Net investment income (loss) on cash, including foreign exchange gains (losses)
Schedule of Cost-method Investments [Line Items]
Change in net investment income									4,992	17,961	-1,230
Net investment gains (losses) on securities purchased under and agreement to resell
Schedule of Cost-method Investments [Line Items]
Change in net investment income									-4,099	1,863	562
Management and performance fees
Schedule of Cost-method Investments [Line Items]
Change in net investment income									-53,516	-87,333	-50,211
Other investment expenses
Schedule of Cost-method Investments [Line Items]
Change in net investment income									($4,218)	($5,247)	($3,758)

Other_expenses_Details

Other expenses (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Income and Expenses [Abstract]
Deposit liabilities investment expense									$4,346	$4,271	$296
Reinsurance contracts investment expense									1,061	191	0
Change in fair value of embedded derivatives in deposit and reinsurance contracts (1)									1,988	460	150
Other expenses	$2,606	$2,982	$1,020	$787	$2,247	$1,246	$759	$670	$7,395	$4,922	$446

Share_capital_Authorized_and_i

Share capital - Authorized and issued (Details) (USD $)	0 Months Ended
In Millions, except Share data, unless otherwise specified	Aug. 20, 2013	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Authorized share capital		$33
Common share, shares authorized (in shares)		300,000,000	300,000,000
Common share, par value (in dollars per share)		$0.10	$0.10
Preference shares, shares authorized (in shares)		30,000,000	30,000,000
Preference shares, par value (in dollars per share)		$0.10	$0.10
Common share, shares issued (in shares)		104,473,402	103,888,916
Common share, shares outstanding (in shares)		104,473,402	103,888,916
Preference shares, shares issued (in shares)		0	0
Preference shares, shares outstanding (in shares)		0	0
IPO
Class of Stock [Line Items]
Issuance of common shares (in shares)	24,832,484
Sale of stock, price per share (in dollars per share)	$12.50
Sale of stock, net proceeds	$286

Share_capital_Warrants_Details

Share capital - Warrants (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Aug. 20, 2013	Aug. 18, 2013
Class of Warrant or Right [Line Items]
Maximum percent of warrants reserved for issuance	4.00%
Maximum value of warrants reserved for issuance	$1,000,000,000
Exercise price (in dollars per share)	10
Authorized and issued (in shares)	4,651,163
Aggregated fair value of warrants	17,374,000
Warrants authorized and issued (in shares)		1,003,157	3,648,006
Term of warrants	10 years
Founders
Class of Warrant or Right [Line Items]
Maximum percent of warrants reserved for issuance	3.50%
Exercise price (in dollars per share)	10
Authorized and issued (in shares)	4,069,868
Aggregated fair value of warrants	15,203,000
Advisor
Class of Warrant or Right [Line Items]
Maximum percent of warrants reserved for issuance	0.50%
Exercise price (in dollars per share)	10
Authorized and issued (in shares)	581,295
Aggregated fair value of warrants	$2,171,000

Sharebased_compensation_Narrat

Share-based compensation - Narrative (Details) (USD $)	12 Months Ended			10 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 04, 2013	Nov. 06, 2013	Dec. 31, 2011	Aug. 20, 2013	Aug. 18, 2013	Jul. 15, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share compensation expenses	$9,258,000	$9,800,000	$6,408,000
Unamortized share compensation expense	20,000,000	23,800,000
Unamortized share compensation expense, period of recognition	1 year 7 months 6 days	2 years
Options outstanding (in shares)	10,990,841	10,981,075	10,956,838			0
Fair value assumptions
Aggregate intrinsic value of options outstanding	28,400,000	61,500,000
Aggregate intrinsic value of options exercisable	14,000,000	17,600,000
Employees
Fair value assumptions
Restricted shares issued	9,614	5,000	641,800
Non-Employee Directors [Member]
Fair value assumptions
Restricted shares issued	40,070	32,856	0
Performance shares - conditions met
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share compensation expenses	100,000
Options outstanding had met the performance condition (in shares)	306,496
Fair value assumptions
Granted (in shares)	459,746
Granted (in dollars per share)	$14.60
Performance shares - conditions met | Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding had met the performance condition (in shares)							2,357,633	8,572,594
Management and director options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share compensation expenses	6,600,000	8,300,000	4,800,000
Options outstanding (in shares)	10,990,841
Fair value assumptions
Estimated share price (in dollars per share)	$15.05	$10.89	$10
Volatility assumption	23.10%	21.95%	31.25%
Risk free interest rate	2.20%	1.23%	1.90%
Expected life	6 years 6 months	6 years 6 months	10 years
Dividend yield	0.00%	0.00%	0.00%
Remaining contractual life	7 years 1 month 13 days	8 years 0 months 22 days
Management and director options | Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service condition met on each of first five anniversary dates following grant date	20.00%
Award vesting period	5 years
Management and director options | Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Management and director options | Directors | Previous Vesting on Five Anniversary Dates [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service condition met on each of first five anniversary dates following grant date				20.00%
Management and director options | Directors | Fully Vested on November 6th, 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service condition met on each of first five anniversary dates following grant date					60.00%
Management and director options | Directors | Forfeited on November 6, 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service condition met on each of first five anniversary dates following grant date					40.00%
Restricted share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share compensation expenses	$2,600,000	$1,500,000	$1,600,000
Award vesting period	3 years	2 years
Fair value assumptions
Granted (in shares)	49,684	37,856	641,800
Granted (in dollars per share)	$15.39	$15.22	$10
Restricted share awards | Cliff Vest [Member] | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Restricted share awards | Cliff Vest [Member] | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years
Omnibus plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)									21,627,906
Number of shares available for future issuance (in shares)	10,052,579	10,613,975

Sharebased_compensation_Schedu

Share-based compensation - Schedule of management and director options activity (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share compensation expenses	$9,258	$9,800	$6,408
Number of options (in shares)
Outstanding (in shares)	10,981,075	10,956,838	0
Forfeited (in shares)	-279,070	-324,599
Exercised (in shares)	-60,000
Outstanding (in shares)	10,990,841	10,981,075	10,956,838
Weighted average exercise price (in dollars per share)
Outstanding (in dollars per share)	$13.23	$13.20	$0
Forfeited (in dollars per share)	$13.20	$13.20
Exercised (in dollars per share)	$10
Outstanding (in dollars per share)	$13.41	$13.23	$13.20
Employees
Number of options (in shares)
Granted (in shares)	348,836	348,836	10,872,090
Weighted average exercise price (in dollars per share)
Granted (in dollars per share)	$18.25	$14.09	$13.20
Directors
Number of options (in shares)
Granted (in shares)			84,748
Weighted average exercise price (in dollars per share)
Granted (in dollars per share)			$13.20
Management and director options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share compensation expenses	$6,600	$8,300	$4,800
Number of options (in shares)
Outstanding (in shares)	10,990,841
Weighted average exercise price (in dollars per share)
Outstanding (in dollars per share)	$13.41

Sharebased_compensation_Schedu1

Share-based compensation - Schedule of management and director options outstanding (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding (in shares)	10,990,841	10,981,075	10,956,838	0
Options outstanding, weighted average exercise price (in dollars per share)	$13.41	13.23	$13.20	$0
Management and director options
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding (in shares)	10,990,841
Options outstanding, weighted average exercise price (in dollars per share)	$13.41
Remaining contractual life	7 years 1 month 13 days	8 years 0 months 22 days
Options exercisable (in shares)	5,246,661
Options exercisable, weighted average exercise price (in dollars per share)	$13.25
Management and director options | $10.00 - $10.89
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$10
Exercise price, upper limit (in dollars per share)	$10.89
Options outstanding (in shares)	6,361,205
Options outstanding, weighted average exercise price (in dollars per share)	$10.03
Remaining contractual life	7 years 0 months 22 days
Options exercisable (in shares)	3,123,997
Options exercisable, weighted average exercise price (in dollars per share)	$10.01
Management and director options | $16.00 - $16.89
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$16
Exercise price, upper limit (in dollars per share)	$16.89
Options outstanding (in shares)	2,349,702
Options outstanding, weighted average exercise price (in dollars per share)	$15.94
Remaining contractual life	7 years 2 months 23 days
Options exercisable (in shares)	1,061,332
Options exercisable, weighted average exercise price (in dollars per share)	$16.01
Management and director options | $20.00 - $25.05
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$20
Exercise price, upper limit (in dollars per share)	$20.89
Options outstanding (in shares)	2,279,934
Options outstanding, weighted average exercise price (in dollars per share)	$20.21
Remaining contractual life	7 years 2 months 5 days
Options exercisable (in shares)	1,061,332
Options exercisable, weighted average exercise price (in dollars per share)	$20.01

Sharebased_compensation_Schedu2

Share-based compensation - Schedule of restricted share award activity (Details) (Restricted share awards, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restricted share awards
Number of non-vested restricted shares (in shares)
Outstanding (in shares)	657,156	619,300	0
Granted (in shares)	49,684	37,856	641,800
Forfeited (in shares)	-17,800		-22,500
Vested (in shares)	-72,926
Outstanding (in shares)	616,114	657,156	619,300
Weighted average grant data fair value (in dollars per share)
Outstanding (in dollars per share)	$10.30	$10	$0
Granted (in dollars per share)	$15.39	$15.22	$10
Forfeited (in dollars per share)	$10		$10
Vested (in dollars per share)	$15.56
Outstanding (in dollars per share)	$10.10	$10.30	$10

Noncontrolling_interests_Sched

Non-controlling interests - Schedule of Noncontrolling Interest (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Noncontrolling Interest [Line Items]
Non-controlling interests	$100,135	$118,735
Catastrophe Fund
Noncontrolling Interest [Line Items]
Non-controlling interests	60,153	49,254
Catastrophe Fund Manager
Noncontrolling Interest [Line Items]
Non-controlling interests	-259	-236
Joint Venture - Third Point Advisors LLC share
Noncontrolling Interest [Line Items]
Non-controlling Interests	$40,241	$69,717

Noncontrolling_interests_Incom

Non-controlling interests - Income Attributable to Non-controlling Interests (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Noncontrolling Interest [Line Items]
Income (loss) attributable to non-controlling interests	$6,315	$5,767	$1,216
Catastrophe Fund
Noncontrolling Interest [Line Items]
Income (loss) attributable to non-controlling interests	4,748	4,284	0
Catastrophe Fund Manager
Noncontrolling Interest [Line Items]
Income (loss) attributable to non-controlling interests	-23	-238	0
Joint Venture - Third Point Advisors LLC share
Noncontrolling Interest [Line Items]
Income (loss) attributable to non-controlling interests	$1,590	$1,721	$1,216

Noncontrolling_interests_Narra

Non-controlling interests - Narrative (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013
Noncontrolling Interest [Line Items]
Committed capital, amount called		$0
Noncontrolling interest, increase from contributed capital	25,300,000	6,200,000
Third Point Reinsurance Opportunities Fund Ltd
Noncontrolling Interest [Line Items]
Estimated fair value of investment		59,500,000		54,800,000
Ownership percentage		49.70%		53.00%
Ownership percentage of nonparticipating shares		100.00%
Ownership percentage of participating shares		100.00%
Committed capital, amount called	53,000,000	6,200,000	0
Third Point Reinsurance Company Limited
Noncontrolling Interest [Line Items]
Committed capital, amount called	28,000,000
Hiscox | Catastrophe Fund Manager
Noncontrolling Interest [Line Items]
Ownership percentage		15.00%
Joint Venture - Third Point Advisors LLC share
Noncontrolling Interest [Line Items]
Distributions		51	0	35.1
Cayman Holdco [Member]
Noncontrolling Interest [Line Items]
Estimated fair value of investment		55,800,000		29,300,000
Ownership percentage		9.80%		10.00%
Third Point Hellenic Recovery US Feeder Fund, L.P. [Member]
Noncontrolling Interest [Line Items]
Estimated fair value of investment		6,300,000		5,300,000
Ownership percentage		3.00%		3.10%
Committed capital, amount called		2,900,000		4,300,000
Noncontrolling interest, increase from contributed capital		11,400,000		11,400,000
Distributions		$1,500,000		$0

Earnings_per_share_Details

Earnings per share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Weighted-average number of common shares outstanding:
Basic number of common shares outstanding (in shares)	103,324,616	103,295,920	103,264,616	103,264,616	103,264,616	89,620,394	78,432,132	78,432,132	103,287,693	87,505,540	78,432,132
Dilutive effect of options (in shares)									1,468,521	400,149	0
Dilutive effect of warrants (in shares)									1,634,845	1,064,842	166,104
Diluted number of common shares outstanding (in shares)	103,324,616	103,295,920	106,433,881	103,413,580	106,390,339	90,915,805	79,254,268	79,083,675	106,391,059	88,970,531	78,598,236
Basic net income per common share:
Income including non-controlling interests	($14,679)	($5,997)	$31,292	$39,779	$80,088	$46,570	$26,223	$74,430	$50,395	$227,311	$99,401
Income allocated to participating shares									-328	-1,618	-734
Net income available to common shareholders									50,067	225,693	98,667
Basic net income (loss) per common share (in dollars per share)	($0.14)	($0.06)	$0.30	$0.38	$0.77	$0.52	$0.33	$0.94	$0.48	$2.58	$1.26
Earnings Per Share, Diluted [Abstract]
Income including non-controlling interests	-14,679	-5,997	31,292	39,779	80,088	46,570	26,223	74,430	50,395	227,311	99,401
Income allocated to participating securities									-319	-1,592	-737
Net income available to common shareholders									$50,076	$225,719	$98,664
Diluted net income (loss) per common share (in dollars per share)	($0.14)	($0.06)	$0.29	$0.37	$0.75	$0.51	$0.33	$0.93	$0.47	$2.54	$1.26
Options, warrants and restricted shares with service and performance condition
Earnings Per Share, Diluted [Abstract]
Antidilutive securities excluded from computation of earnings per share									4,501,991	3,786,173	3,052,091

Related_party_transactions_Det

Related party transactions (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Gross premiums written	$253,802,000	$126,403,000	$145,508,000	$87,587,000	$162,277,000	$45,425,000	$98,215,000	$96,020,000	$613,300,000	$401,937,000	$190,374,000
Narragansett Bay Insurance Company
Related Party Transaction [Line Items]
Gross premiums written									1,000,000	4,700,000	9,000,000
Pine Brook Road Partners, LLC
Related Party Transaction [Line Items]
Ownership percentage	12.00%				12.00%				12.00%	12.00%
Third Point Loan L.L.C | Investments in securities, commodities, and derivative contracts
Related Party Transaction [Line Items]
Estimated fair value of investment	$33,400,000				$147,200,000				$33,400,000	$147,200,000

Financial_instruments_with_off2

Financial instruments with off-balance sheet risk or concentrations of credit risk (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Guarantor Obligations [Line Items]
Asset	$21,130,000	$39,045,000
Liability	-11,015,000	-8,819,000
Written credit derivatives
Guarantor Obligations [Line Items]
0-5 years	0	9,882,000
5 years or Greater Expiring Through 2046	7,226,000	550,000
Total Written Credit Default Swaps	7,226,000	10,432,000
Asset	205,000	1,157,000
Liability	-1,319,000	-348,000
Net Asset/(Liability)	-1,114,000	809,000
Written credit derivatives | Single name (0 - 250)
Guarantor Obligations [Line Items]
0-5 years	0	368,000
5 years or Greater Expiring Through 2046	5,142,000	0
Total Written Credit Default Swaps	5,142,000	368,000
Asset	0	0
Liability	-1,319,000	-104,000
Net Asset/(Liability)	-1,319,000	-104,000
Written credit derivatives | Single name (251-500)
Guarantor Obligations [Line Items]
0-5 years	0	9,514,000
5 years or Greater Expiring Through 2046	2,084,000	0
Total Written Credit Default Swaps	2,084,000	9,514,000
Asset	205,000	1,136,000
Liability	0	0
Net Asset/(Liability)	205,000	1,136,000
Written credit derivatives | Index (0-250)
Guarantor Obligations [Line Items]
0-5 years		0
5 years or Greater Expiring Through 2046		550,000
Total Written Credit Default Swaps		550,000
Asset		21,000
Liability		-244,000
Net Asset/(Liability)		-223,000
Credit risk exposure
Guarantor Obligations [Line Items]
Maximum counterparty credit risk exposure	9,700,000	19,000,000
Written put options
Guarantor Obligations [Line Items]
Option contracts maximum payout	666,900,000	689,500,000
Written put options | Securities sold, not yet purchased
Guarantor Obligations [Line Items]
Options contracts at fair value	$4,500,000	$2,600,000
Written put options | Minimum
Guarantor Obligations [Line Items]
Option contracts maximum payout term	1 month
Written put options | Maximum
Guarantor Obligations [Line Items]
Option contracts maximum payout term	10 months

Commitments_and_Contingencies_1

Commitments and Contingencies - Operating lease (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Operating leases, rent expense	$500,000	$400,000	$400,000
2015	411,000
2016	0
2017	0
2018	0
2019	0
Total	$411,000

Commitments_and_Contingencies_2

Commitments and Contingencies - Agreements and Investments (Details) (USD $)	0 Months Ended
	Sep. 03, 2014	Dec. 22, 2011	Dec. 20, 2011	Dec. 31, 2014	Sep. 03, 2014
			aircraft		aircraft
Commitments and Contingencies Disclosure [Abstract]
Investment management agreement duration		5 years
Percentage of interest acquired in aircraft	6.25%		12.50%		6.25%
Number of aircraft interest acquired in	1		2		1
Duration aircraft acquired for	5 years		5 years
Unfunded capital commitments				$4,200,000
Management Fee Commitment
Other Commitments [Line Items]
2015				660,000
2016				639,000
2017				24,000
2018				0
2019				0
Total				$1,323,000

Commitments_and_Contingencies_3

Commitments and Contingencies - Letters of credit (Details) (Letter of credit, USD $)	Dec. 31, 2014	Dec. 31, 2013	Feb. 26, 2015
Line of Credit Facility [Line Items]
Facility	$400,000,000	$300,000,000
Letters of credit outstanding	218,500,000	127,300,000
Letters of credit outstanding as percentage of total facility	54.60%	42.40%
Restricted cash and cash equivalents
Line of Credit Facility [Line Items]
Cash and cash equivalents pledged as security	219,000,000	100,600,000
BNP Paribas
Line of Credit Facility [Line Items]
Facility	100,000,000
Citibank
Line of Credit Facility [Line Items]
Facility	250,000,000
J.P. Morgan
Line of Credit Facility [Line Items]
Facility	50,000,000
Subsequent event | Lloyd's Bank
Line of Credit Facility [Line Items]
Facility			$150,000,000

Segment_reporting_Operating_Se

Segment reporting - Operating Segments (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
									segment
Segment Reporting [Abstract]
Number of operating segments									2
Segment Reporting Information [Line Items]
Gross premiums written	$253,802	$126,403	$145,508	$87,587	$162,277	$45,425	$98,215	$96,020	$613,300	$401,937	$190,374
Gross premiums ceded	0	-150	0	0	0	0	0	-9,975	-150	-9,975	0
Net premiums written	253,802	126,253	145,508	87,587	162,277	45,425	98,215	86,045	613,150	391,962	190,374
Change in net unearned premium reserves	-70,230	-17,305	-66,758	-14,325	-103,767	20,904	-35,928	-52,504	-168,618	-171,295	-93,893
Net premiums earned	183,572	108,948	78,750	73,262	58,510	66,329	62,287	33,541	444,532	220,667	96,481
Total revenues	177,082	110,500	119,235	123,297	147,831	120,946	95,113	114,902	530,114	478,792	233,349
Loss and loss adjustment expenses incurred, net	132,364	60,115	44,409	46,259	36,133	39,349	45,692	18,638	283,147	139,812	80,306
Acquisition costs, net	43,875	38,317	29,583	25,431	18,833	21,117	14,921	13,073	137,206	67,944	24,604
General and administrative expenses	10,310	10,124	9,549	10,025	8,965	9,846	7,217	7,008	40,008	33,036	27,376
Total expenses									460,361	240,792	132,286
Net investment income	-6,490	1,552	40,485	50,035	89,321	54,617	32,826	81,361	85,582	258,125	136,868
Other expenses	-2,606	-2,982	-1,020	-787	-2,247	-1,246	-759	-670	-7,395	-4,922	-446
Income tax expense	-1,731	-1,542	-2,375	0					-5,648	0	0
Income including non-controlling interests	-13,804	-2,580	32,299	40,795	81,653	49,388	26,524	75,513	56,710	233,078	100,617
Income attributable to non-controlling interests	-875	-3,417	-1,007	-1,016	-1,565	-2,818	-301	-1,083	-6,315	-5,767	-1,216
Net income	-14,679	-5,997	31,292	39,779	80,088	46,570	26,223	74,430	50,395	227,311	99,401
Gross premiums as percentage of total gross premiums									100.00%	100.00%	100.00%
Prospective Reinsurance Contract [Member]
Segment Reporting Information [Line Items]
Gross premiums written									530,169	362,151	190,374
Gross premiums as percentage of total gross premiums									86.40%	90.10%	100.00%
Retroactive Reinsurance Contract [Member]
Segment Reporting Information [Line Items]
Gross premiums written									83,131	39,786	0
Gross premiums as percentage of total gross premiums									13.60%	9.90%	0.00%
Corporate
Segment Reporting Information [Line Items]
Gross premiums written									0	0	0
Gross premiums ceded									0	0	0
Net premiums written									0	0	0
Change in net unearned premium reserves									0	0	0
Net premiums earned									0	0	0
Loss and loss adjustment expenses incurred, net									0	0	0
Acquisition costs, net									0	0	0
General and administrative expenses									14,380	7,346	5,552
Total expenses									14,380	7,346	5,552
Net investment income									73,050	226,751	131,967
Other expenses									0	0	0
Income tax expense									-5,648
Income including non-controlling interests									53,022	219,405	126,415
Income attributable to non-controlling interests									-1,590	-1,721	-1,216
Net income									51,432	217,684	125,199
Property and Casualty Reinsurance
Segment Reporting Information [Line Items]
Gross premiums written									601,305	393,588	190,374
Gross premiums as percentage of total gross premiums									98.00%	97.92%	100.00%
Property and Casualty Reinsurance | Property
Segment Reporting Information [Line Items]
Gross premiums written									106,834	67,612	103,174
Gross premiums as percentage of total gross premiums									17.40%	16.80%	54.20%
Property and Casualty Reinsurance | Casualty
Segment Reporting Information [Line Items]
Gross premiums written									266,763	210,017	44,700
Gross premiums as percentage of total gross premiums									43.50%	52.20%	23.50%
Property and Casualty Reinsurance | Specialty
Segment Reporting Information [Line Items]
Gross premiums written									227,708	115,959	42,500
Gross premiums as percentage of total gross premiums									37.10%	28.90%	22.30%
Property and Casualty Reinsurance | Operating Segments
Segment Reporting Information [Line Items]
Gross premiums written									601,305	393,588	190,374
Gross premiums ceded									-150	-9,975	0
Net premiums written									601,155	383,613	190,374
Change in net unearned premium reserves									-168,858	-171,006	-93,893
Net premiums earned									432,297	212,607	96,481
Loss and loss adjustment expenses incurred, net									283,180	139,616	80,306
Acquisition costs, net									136,154	66,981	24,604
General and administrative expenses									22,515	21,838	20,290
Total expenses									441,849	228,435	125,200
Net underwriting loss									-9,552	-15,828	-28,719
Net investment income									11,305	26,953	4,901
Other expenses									-7,395	-4,922	-446
Income tax expense									0
Income including non-controlling interests									-5,642	6,203	-24,264
Income attributable to non-controlling interests									0	0	0
Net income									-5,642	6,203	-24,264
Loss ratio									65.50%	65.70%	83.20%
Acquisition cost ratio									31.50%	31.50%	25.50%
Composite ratio									97.00%	97.20%	108.70%
General and administrative expense ratio									5.20%	10.30%	21.00%
Combined ratio									102.20%	107.50%	129.70%
Catastrophe Risk Management
Segment Reporting Information [Line Items]
Gross premiums written									11,995	8,349	0
Gross premiums as percentage of total gross premiums									2.00%	2.10%	0.00%
Catastrophe Risk Management | Operating Segments
Segment Reporting Information [Line Items]
Gross premiums written									11,995	8,349	0
Gross premiums ceded									0	0	0
Net premiums written									11,995	8,349	0
Change in net unearned premium reserves									240	-289	0
Net premiums earned									12,235	8,060	0
Loss and loss adjustment expenses incurred, net									-33	196	0
Acquisition costs, net									1,052	963	0
General and administrative expenses									3,113	3,852	1,534
Total expenses									4,132	5,011	1,534
Net investment income									1,227	4,421	0
Other expenses									0	0	0
Income tax expense									0
Income including non-controlling interests									9,330	7,470	-1,534
Income attributable to non-controlling interests									-4,725	-4,046	0
Net income									$4,605	$3,424	($1,534)

Segment_reporting_Concentratio

Segment reporting - Concentration Risk (Details) (Gross Premiums Written)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue, Major Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%
Contract Concentration Risk
Revenue, Major Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%
Contract Concentration Risk | Contract 1
Revenue, Major Customer [Line Items]
Concentration risk, percentage	20.40%	14.90%	22.30%
Contract Concentration Risk | Contract 2
Revenue, Major Customer [Line Items]
Concentration risk, percentage	17.10%	11.20%	22.00%
Contract Concentration Risk | Contract 3
Revenue, Major Customer [Line Items]
Concentration risk, percentage	0.00%	10.50%	11.80%
Contract Concentration Risk | Total for contracts contributing greater than 10% each
Revenue, Major Customer [Line Items]
Concentration risk, percentage	37.50%	36.60%	56.10%
Contract Concentration Risk | Total for contracts contributing less than 10% each
Revenue, Major Customer [Line Items]
Concentration risk, percentage	62.50%	63.40%	43.90%

Segment_reporting_Customer_Con

Segment reporting - Customer Concentration (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue, Major Customer [Line Items]
Gross premiums written	$253,802	$126,403	$145,508	$87,587	$162,277	$45,425	$98,215	$96,020	$613,300	$401,937	$190,374
Gross Premiums Written
Revenue, Major Customer [Line Items]
Gross premiums written									613,300	401,937	190,374
Concentration risk, percentage									100.00%	100.00%	100.00%
Gross Premiums Written | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Gross premiums written									613,300	401,937	190,374
Concentration risk, percentage									100.00%	100.00%	100.00%
Gross Premiums Written | Customer Concentration Risk | JLT Re
Revenue, Major Customer [Line Items]
Gross premiums written									199,563	0	0
Concentration risk, percentage									32.50%	0.00%	0.00%
Gross Premiums Written | Customer Concentration Risk | Guy Carpenter & Company, LLC
Revenue, Major Customer [Line Items]
Gross premiums written									110,063	89,125	65,073
Concentration risk, percentage									17.90%	22.20%	34.20%
Gross Premiums Written | Customer Concentration Risk | Aon Benfield - a division of Aon plc
Revenue, Major Customer [Line Items]
Gross premiums written									80,535	111,865	22,000
Concentration risk, percentage									13.10%	27.80%	11.60%
Gross Premiums Written | Customer Concentration Risk | Willis Re
Revenue, Major Customer [Line Items]
Gross premiums written									61,777	22,871	0
Concentration risk, percentage									10.10%	5.70%	0.00%
Gross Premiums Written | Customer Concentration Risk | Advocate Reinsurance Partners, LLC
Revenue, Major Customer [Line Items]
Gross premiums written									58,616	57,994	22,473
Concentration risk, percentage									9.60%	14.40%	11.80%
Gross Premiums Written | Customer Concentration Risk | Other brokers
Revenue, Major Customer [Line Items]
Gross premiums written									57,403	63,470	38,328
Concentration risk, percentage									9.40%	15.80%	20.20%
Gross Premiums Written | Customer Concentration Risk | Total broker placed
Revenue, Major Customer [Line Items]
Gross premiums written									567,957	345,325	147,874
Concentration risk, percentage									92.60%	85.90%	77.80%
Gross Premiums Written | Customer Concentration Risk | Other
Revenue, Major Customer [Line Items]
Gross premiums written									$45,343	$56,612	$42,500
Concentration risk, percentage									7.40%	14.10%	22.20%

Segment_reporting_Geographic_i

Segment reporting - Geographic information (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue from External Customer [Line Items]
Gross premiums written	$253,802	$126,403	$145,508	$87,587	$162,277	$45,425	$98,215	$96,020	$613,300	$401,937	$190,374
Gross Premiums Written
Revenue from External Customer [Line Items]
Gross premiums written									613,300	401,937	190,374
Concentration risk, percentage									100.00%	100.00%	100.00%
Gross Premiums Written | United States
Revenue from External Customer [Line Items]
Gross premiums written									339,061	304,141	190,374
Concentration risk, percentage									55.30%	75.70%	100.00%
Gross Premiums Written | United Kingdom
Revenue from External Customer [Line Items]
Gross premiums written									176,522	0	0
Concentration risk, percentage									28.80%	0.00%	0.00%
Gross Premiums Written | Bermuda
Revenue from External Customer [Line Items]
Gross premiums written									97,717	96,396	0
Concentration risk, percentage									15.90%	24.00%	0.00%
Gross Premiums Written | Other
Revenue from External Customer [Line Items]
Gross premiums written									$0	$1,400	$0
Concentration risk, percentage									0.00%	0.30%	0.00%

Statutory_Requirements_Details

Statutory Requirements (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Feb. 26, 2015
		member
Statutory Accounting Practices [Line Items]
Statutory net income	$101,300,000
Bermuda
Statutory Accounting Practices [Line Items]
Actual statutory capital		1,296,067,000	1,303,487,000
Required statutory capital and surplus		622,624,000	526,933,000
Statutory net income		56,700,000	230,000,000
Liquidity ratio, minimum percentage required		75.00%
Statutory maximum percentage available for dividend payments		25.00%
Dividend payments with regulatory approval, number of members required		2
Statutory amount available for dividend payments without regulatory approval		324,000,000	325,900,000
Subsequent event
Statutory Accounting Practices [Line Items]
Dividends				$158,000,000

Subsequent_events_Details

Subsequent events (Details) (USD $)	12 Months Ended		0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Feb. 26, 2015	Dec. 31, 2014	Jan. 05, 2015	Feb. 13, 2015
Subsequent Event [Line Items]
Contributed capital to subsidiaries	$0	$0
Letter of credit
Subsequent Event [Line Items]
Facility	300,000,000			400,000,000
Subsequent event
Subsequent Event [Line Items]
Percentage of catastrophe fund repurchased for cancellation					15.00%
Dividends			158,000,000
Contributed capital to subsidiaries			265,000,000
Subsequent event | Letter of credit | Lloyd's Bank
Subsequent Event [Line Items]
Facility			150,000,000
Senior unsecured notes | Subsequent event
Subsequent Event [Line Items]
Debt issued						$115,000,000
Interest rate						7.00%

Supplemental_Guarantor_Informa2

Supplemental Guarantor Information - Condensed Consolidating Balance Sheet (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Assets
Equity securities	$1,177,796	$954,111
Debt securities	569,648	441,424
Other investments, at fair value	83,394	65,329
Total investments in securities and commodities	1,830,838	1,460,864
Cash and cash equivalents	28,734	31,625	34,005	603,841
Restricted cash and cash equivalents	417,307	193,577
Investment in subsidiaries	0	0
Due from brokers	58,241	98,386
Securities purchased under an agreement to sell	29,852	38,147
Derivative assets, at fair value	21,130	39,045
Interest and dividends receivable	2,602	2,615
Reinsurance balances receivable	303,649	191,763
Deferred acquisition costs, net	155,901	91,193
Loss and loss adjustment expenses recoverable	814	9,277	0	0
Other assets	3,512	3,398
Amounts due from affiliates	0	0
Total assets	2,852,580	2,159,890
Liabilities
Accounts payable and accrued expenses	10,085	9,456
Reinsurance balances payable	27,040	9,081
Deposit liabilities	145,430	120,946	50,446	0
Unearned premium reserves	433,809	265,187
Loss and loss adjustment expense reserves	277,362	134,331
Securities sold, not yet purchased, at fair value	82,485	56,056
Due to brokers	312,609	44,870
Derivative liabilities, at fair value	11,015	8,819
Interest and dividends payable	697	748
Amounts due to affiliates		0
Total liabilities	1,300,532	649,494
Shareholders’ equity
Common shares	10,447	10,389
Additional paid-in capital	1,065,489	1,055,690
Retained earnings	375,977	325,582
Shareholders’ equity attributable to shareholders	1,451,913	1,391,661
Non-controlling interests	100,135	118,735
Total shareholders’ equity	1,552,048	1,510,396	928,321
Total liabilities and shareholders’ equity	2,852,580	2,159,890
Eliminations
Assets
Equity securities	0	0
Debt securities	0	0
Other investments, at fair value	0	0
Total investments in securities and commodities	0	0
Cash and cash equivalents	0	0	0	0
Restricted cash and cash equivalents	0	0
Investment in subsidiaries	-1,451,060	-1,394,644
Due from brokers	0	0
Securities purchased under an agreement to sell	0	0
Derivative assets, at fair value	0	0
Interest and dividends receivable	0	0
Reinsurance balances receivable	0	0
Deferred acquisition costs, net	0	0
Loss and loss adjustment expenses recoverable	0	0
Other assets	0	0
Amounts due from affiliates	0	0
Total assets	-1,451,060	-1,394,644
Liabilities
Accounts payable and accrued expenses	0	0
Reinsurance balances payable	0	0
Deposit liabilities	0	0
Unearned premium reserves	0	0
Loss and loss adjustment expense reserves	0	0
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Derivative liabilities, at fair value	0	0
Interest and dividends payable	0	0
Amounts due to affiliates		0
Total liabilities	0	0
Shareholders’ equity
Common shares	-1,251	-1,251
Additional paid-in capital	-1,072,671	-1,064,493
Retained earnings	-377,138	-328,900
Shareholders’ equity attributable to shareholders	-1,451,060	-1,394,644
Non-controlling interests	0	0
Total shareholders’ equity	-1,451,060	-1,394,644
Total liabilities and shareholders’ equity	-1,451,060	-1,394,644
Parent Guarantor | Reportable Legal Entities
Assets
Equity securities	0	0
Debt securities	0	0
Other investments, at fair value	0	0
Total investments in securities and commodities	0	0
Cash and cash equivalents	140	294	169	11,600
Restricted cash and cash equivalents	0	0
Investment in subsidiaries	1,451,060	1,394,644
Due from brokers	0	0
Securities purchased under an agreement to sell	0	0
Derivative assets, at fair value	0	0
Interest and dividends receivable	0	0
Reinsurance balances receivable	0	0
Deferred acquisition costs, net	0	0
Loss and loss adjustment expenses recoverable	0	0
Other assets	600	720
Amounts due from affiliates	1,339	417
Total assets	1,453,139	1,396,075
Liabilities
Accounts payable and accrued expenses	1,226	242
Reinsurance balances payable	0	0
Deposit liabilities	0	0
Unearned premium reserves	0	0
Loss and loss adjustment expense reserves	0	0
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Derivative liabilities, at fair value	0	0
Interest and dividends payable	0	0
Amounts due to affiliates		4,172
Total liabilities	1,226	4,414
Shareholders’ equity
Common shares	10,447	10,389
Additional paid-in capital	1,065,489	1,055,690
Retained earnings	375,977	325,582
Shareholders’ equity attributable to shareholders	1,451,913	1,391,661
Non-controlling interests	0	0
Total shareholders’ equity	1,451,913	1,391,661
Total liabilities and shareholders’ equity	1,453,139	1,396,075
Issuer of Debt | Reportable Legal Entities
Assets
Equity securities	0	0
Debt securities	0	0
Other investments, at fair value	0	0
Total investments in securities and commodities	0	0
Cash and cash equivalents	0	0	0	0
Restricted cash and cash equivalents	0	0
Investment in subsidiaries	0	0
Due from brokers	0	0
Securities purchased under an agreement to sell	0	0
Derivative assets, at fair value	0	0
Interest and dividends receivable	0	0
Reinsurance balances receivable	0	0
Deferred acquisition costs, net	0	0
Loss and loss adjustment expenses recoverable	0	0
Other assets	666	0
Amounts due from affiliates	-403	0
Total assets	263	0
Liabilities
Accounts payable and accrued expenses	518	0
Reinsurance balances payable	0	0
Deposit liabilities	0	0
Unearned premium reserves	0	0
Loss and loss adjustment expense reserves	0	0
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Derivative liabilities, at fair value	0	0
Interest and dividends payable	0	0
Amounts due to affiliates		0
Total liabilities	518	0
Shareholders’ equity
Common shares	0	0
Additional paid-in capital	0	0
Retained earnings	-255	0
Shareholders’ equity attributable to shareholders	-255	0
Non-controlling interests	0	0
Total shareholders’ equity	-255	0
Total liabilities and shareholders’ equity	263	0
Non-Guarantor Subsidiaries | Reportable Legal Entities
Assets
Equity securities	1,177,796	954,111
Debt securities	569,648	441,424
Other investments, at fair value	83,394	65,329
Total investments in securities and commodities	1,830,838	1,460,864
Cash and cash equivalents	28,594	31,331	33,836	592,241
Restricted cash and cash equivalents	417,307	193,577
Investment in subsidiaries		0
Due from brokers	58,241	98,386
Securities purchased under an agreement to sell	29,852	38,147
Derivative assets, at fair value	21,130	39,045
Interest and dividends receivable	2,602	2,615
Reinsurance balances receivable	303,649	191,763
Deferred acquisition costs, net	155,901	91,193
Loss and loss adjustment expenses recoverable	814	9,277
Other assets	2,246	2,678
Amounts due from affiliates	-936	-417
Total assets	2,850,238	2,158,459
Liabilities
Accounts payable and accrued expenses	8,341	9,214
Reinsurance balances payable	27,040	9,081
Deposit liabilities	145,430	120,946
Unearned premium reserves	433,809	265,187
Loss and loss adjustment expense reserves	277,362	134,331
Securities sold, not yet purchased, at fair value	82,485	56,056
Due to brokers	312,609	44,870
Derivative liabilities, at fair value	11,015	8,819
Interest and dividends payable	697	748
Amounts due to affiliates		-4,172
Total liabilities	1,298,788	645,080
Shareholders’ equity
Common shares	1,251	1,251
Additional paid-in capital	1,072,671	1,064,493
Retained earnings	377,393	328,900
Shareholders’ equity attributable to shareholders	1,451,315	1,394,644
Non-controlling interests	100,135	118,735
Total shareholders’ equity	1,551,450	1,513,379
Total liabilities and shareholders’ equity	$2,850,238	$2,158,459

Supplemental_Guarantor_Informa3

Supplemental Guarantor Information - Condensed Consolidating Statement of Income (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Gross premiums written	$253,802	$126,403	$145,508	$87,587	$162,277	$45,425	$98,215	$96,020	$613,300	$401,937	$190,374
Gross premiums ceded	0	-150	0	0	0	0	0	-9,975	-150	-9,975	0
Net premiums written	253,802	126,253	145,508	87,587	162,277	45,425	98,215	86,045	613,150	391,962	190,374
Change in net unearned premium reserves	-70,230	-17,305	-66,758	-14,325	-103,767	20,904	-35,928	-52,504	-168,618	-171,295	-93,893
Net premiums earned	183,572	108,948	78,750	73,262	58,510	66,329	62,287	33,541	444,532	220,667	96,481
Net investment income	-6,490	1,552	40,485	50,035	89,321	54,617	32,826	81,361	85,582	258,125	136,868
Equity in earnings of subsidiaries									0	0	0
Total revenues	177,082	110,500	119,235	123,297	147,831	120,946	95,113	114,902	530,114	478,792	233,349
Expenses
Loss and loss adjustment expenses incurred, net	132,364	60,115	44,409	46,259	36,133	39,349	45,692	18,638	283,147	139,812	80,306
Acquisition costs, net	43,875	38,317	29,583	25,431	18,833	21,117	14,921	13,073	137,206	67,944	24,604
General and administrative expenses	10,310	10,124	9,549	10,025	8,965	9,846	7,217	7,008	40,008	33,036	27,376
Other expenses	2,606	2,982	1,020	787	2,247	1,246	759	670	7,395	4,922	446
Total expenses	189,155	111,538	84,561	82,502	66,178	71,558	68,589	39,389	467,756	245,714	132,732
Income before income tax expense	-12,073	-1,038	34,674	40,795					62,358	233,078	100,617
Income tax expense	-1,731	-1,542	-2,375	0					-5,648	0	0
Income including non-controlling interests	-13,804	-2,580	32,299	40,795	81,653	49,388	26,524	75,513	56,710	233,078	100,617
Income attributable to non-controlling interests	-875	-3,417	-1,007	-1,016	-1,565	-2,818	-301	-1,083	-6,315	-5,767	-1,216
Net income	-14,679	-5,997	31,292	39,779	80,088	46,570	26,223	74,430	50,395	227,311	99,401
Eliminations
Revenues
Gross premiums written									0	0	0
Gross premiums ceded									0	0	0
Net premiums written									0	0	0
Change in net unearned premium reserves									0	0	0
Net premiums earned									0	0	0
Net investment income									0	0	0
Equity in earnings of subsidiaries									-56,238	-228,646	-101,346
Total revenues									-56,238	-228,646	-101,346
Expenses
Loss and loss adjustment expenses incurred, net									0	0	0
Acquisition costs, net									0	0	0
General and administrative expenses									0	0	0
Other expenses									0	0	0
Total expenses									0	0	0
Income before income tax expense									-56,238
Income tax expense									0
Income including non-controlling interests									-56,238	-228,646	-101,346
Income attributable to non-controlling interests									0	0	0
Net income									-56,238	-228,646	-101,346
Parent Guarantor | Reportable Legal Entities
Revenues
Gross premiums written									0	0	0
Gross premiums ceded									0	0	0
Net premiums written									0	0	0
Change in net unearned premium reserves									0	0	0
Net premiums earned									0	0	0
Net investment income									0	0	0
Equity in earnings of subsidiaries									56,238	228,646	101,346
Total revenues									56,238	228,646	101,346
Expenses
Loss and loss adjustment expenses incurred, net									0	0	0
Acquisition costs, net									0	0	0
General and administrative expenses									5,843	1,335	1,945
Other expenses									0	0	0
Total expenses									5,843	1,335	1,945
Income before income tax expense									50,395
Income tax expense									0
Income including non-controlling interests									50,395	227,311	99,401
Income attributable to non-controlling interests									0	0	0
Net income									50,395	227,311	99,401
Issuer of Debt | Reportable Legal Entities
Revenues
Gross premiums written									0	0	0
Gross premiums ceded									0	0	0
Net premiums written									0	0	0
Change in net unearned premium reserves									0	0	0
Net premiums earned									0	0	0
Net investment income									0	0	0
Equity in earnings of subsidiaries									0	0	0
Total revenues									0	0	0
Expenses
Loss and loss adjustment expenses incurred, net									0	0	0
Acquisition costs, net									0	0	0
General and administrative expenses									255	0	0
Other expenses									0	0	0
Total expenses									255	0	0
Income before income tax expense									-255
Income tax expense									0
Income including non-controlling interests									-255	0	0
Income attributable to non-controlling interests									0	0	0
Net income									-255	0	0
Non-Guarantor Subsidiaries | Reportable Legal Entities
Revenues
Gross premiums written									613,300	401,937	190,374
Gross premiums ceded									-150	-9,975	0
Net premiums written									613,150	391,962	190,374
Change in net unearned premium reserves									-168,618	-171,295	-93,893
Net premiums earned									444,532	220,667	96,481
Net investment income									85,582	258,125	136,868
Equity in earnings of subsidiaries									0	0	0
Total revenues									530,114	478,792	233,349
Expenses
Loss and loss adjustment expenses incurred, net									283,147	139,812	80,306
Acquisition costs, net									137,206	67,944	24,604
General and administrative expenses									33,910	31,701	25,431
Other expenses									7,395	4,922	446
Total expenses									461,658	244,379	130,787
Income before income tax expense									68,456
Income tax expense									-5,648
Income including non-controlling interests									62,808	234,413	102,562
Income attributable to non-controlling interests									-6,315	-5,767	-1,216
Net income									$56,493	$228,646	$101,346

Supplemental_Guarantor_Informa4

Supplemental Guarantor Information - Condensed Consolidating Statement of Cash Flows (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities
Income including non-controlling interests	$56,710	$233,078	$100,617
Adjustments to reconcile income including non-controlling interests to net cash provided by (used in) operating activities
Equity in earnings of subsidiaries	0	0	0
Share compensation expense	9,258	9,800	6,408
Interest expense on deposit liabilities	4,346	4,271	296
Net unrealized (gain) loss on investments and derivatives	85,057	-78,490	-113,271
Net realized gain on investments and derivatives	-193,957	-236,333	-55,632
Amortization of premium and accretion of discount, net	-1,044	-262	-2,434
Changes in assets and liabilities:
Reinsurance balances receivable	-111,886	-107,483	-84,280
Deferred acquisition costs, net	-64,708	-45,810	-45,383
Loss and loss adjustment expenses recoverable	8,463	-9,277	0
Other assets	-114	-275	-1,701
Interest and dividends receivable, net	-38	-1,034	-833
Unearned premium reserves	168,622	171,294	93,893
Loss and loss adjustment expense reserves	143,031	67,060	67,271
Accounts payable and accrued expenses	629	4,089	4,157
Reinsurance balances payable	18,061	9,081	0
Amounts due from affiliates	0	0	0
Amounts due to affiliates	0	0	0
Net cash provided by (used in) operating activities	122,430	19,709	-30,892
Investing activities
Purchases of investments	-3,114,906	-2,172,077	-2,317,234
Proceeds from sales of investments	2,857,404	1,943,655	1,521,110
Purchases of investments to cover short sales	-232,568	-407,965	-535,443
Proceeds from short sales of investments	278,569	290,770	729,182
Change in due to/from brokers, net	307,884	12,162	-65,678
Increase (decrease) in securities purchased under an agreement to sell	8,294	22,261	-60,408
Change in restricted cash and cash equivalents	-223,730	-115,950	-77,627
Contributed capital to subsidiaries		0	0
Net cash used in investing activities	-119,053	-427,144	-806,098
Financing activities
Proceeds from issuance of common shares, net of costs	599	286,095	158,593
Increase in deposit liabilities	18,048	65,769	50,000
Non-controlling interest in investment affiliate, net	-31,066	27,867	38,913
Non-controlling interest in Catastrophe Fund	6,151	25,324	19,646
Non-controlling interest in Catastrophe Manager	0	0	2
Dividend received by (paid to) parent	0
Net cash provided by (used in) financing activities	-6,268	405,055	267,154
Net increase (decrease) in cash and cash equivalents	-2,891	-2,380	-569,836
Cash and cash equivalents at beginning of period	31,625	34,005	603,841
Cash and cash equivalents at end of period	28,734	31,625	34,005
Eliminations
Operating activities
Income including non-controlling interests	-56,238	-228,646	-101,346
Adjustments to reconcile income including non-controlling interests to net cash provided by (used in) operating activities
Equity in earnings of subsidiaries	56,238	228,646	101,346
Share compensation expense	0	0	0
Interest expense on deposit liabilities	0	0	0
Net unrealized (gain) loss on investments and derivatives	0	0	0
Net realized gain on investments and derivatives	0	0	0
Amortization of premium and accretion of discount, net	0	0	0
Changes in assets and liabilities:
Reinsurance balances receivable	0	0	0
Deferred acquisition costs, net	0	0	0
Loss and loss adjustment expenses recoverable	0	0
Other assets	0	0	0
Interest and dividends receivable, net	0	0	0
Unearned premium reserves	0	0	0
Loss and loss adjustment expense reserves	0	0	0
Accounts payable and accrued expenses	0	0	0
Reinsurance balances payable	0	0
Amounts due from affiliates	0	0	0
Amounts due to affiliates	0	0	0
Net cash provided by (used in) operating activities	0	0	0
Investing activities
Purchases of investments	0	0	0
Proceeds from sales of investments	0	0	0
Purchases of investments to cover short sales	0	0	0
Proceeds from short sales of investments	0	0	0
Change in due to/from brokers, net	0	0	0
Increase (decrease) in securities purchased under an agreement to sell	0	0	0
Change in restricted cash and cash equivalents	0	0	0
Contributed capital to subsidiaries		0	0
Net cash used in investing activities	0	0	0
Financing activities
Proceeds from issuance of common shares, net of costs	0	0	0
Increase in deposit liabilities	0	0
Non-controlling interest in investment affiliate, net	0	0	0
Non-controlling interest in Catastrophe Fund	0	0	0
Non-controlling interest in Catastrophe Manager			0
Dividend received by (paid to) parent	0
Net cash provided by (used in) financing activities	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of period	0	0	0
Cash and cash equivalents at end of period	0	0	0
Parent Guarantor | Reportable Legal Entities
Operating activities
Income including non-controlling interests	50,395	227,311	99,401
Adjustments to reconcile income including non-controlling interests to net cash provided by (used in) operating activities
Equity in earnings of subsidiaries	-56,238	-228,646	-101,346
Share compensation expense	1,080	0	0
Interest expense on deposit liabilities	0	0	0
Net unrealized (gain) loss on investments and derivatives	0	0	0
Net realized gain on investments and derivatives	0	0	0
Amortization of premium and accretion of discount, net	0	0	0
Changes in assets and liabilities:
Reinsurance balances receivable	0	0	0
Deferred acquisition costs, net	0	0	0
Loss and loss adjustment expenses recoverable	0	0
Other assets	120	-686	-33
Interest and dividends receivable, net	0	0	0
Unearned premium reserves	0	0	0
Loss and loss adjustment expense reserves	0	0	0
Accounts payable and accrued expenses	984	-65	682
Reinsurance balances payable	0	0
Amounts due from affiliates	-922	353	-770
Amounts due to affiliates	-4,172	2,020	2,152
Net cash provided by (used in) operating activities	-8,753	287	86
Investing activities
Purchases of investments	0	0	0
Proceeds from sales of investments	0	0	0
Purchases of investments to cover short sales	0	0	0
Proceeds from short sales of investments	0	0	0
Change in due to/from brokers, net	0	0	0
Increase (decrease) in securities purchased under an agreement to sell	0	0	0
Change in restricted cash and cash equivalents	0	0	0
Contributed capital to subsidiaries		-286,257	-170,110
Net cash used in investing activities	0	-286,257	-170,110
Financing activities
Proceeds from issuance of common shares, net of costs	599	286,095	158,593
Increase in deposit liabilities	0	0	0
Non-controlling interest in investment affiliate, net	0	0	0
Non-controlling interest in Catastrophe Fund	0	0	0
Non-controlling interest in Catastrophe Manager			0
Dividend received by (paid to) parent	8,000
Net cash provided by (used in) financing activities	8,599	286,095	158,593
Net increase (decrease) in cash and cash equivalents	-154	125	-11,431
Cash and cash equivalents at beginning of period	294	169	11,600
Cash and cash equivalents at end of period	140	294	169
Issuer of Debt | Reportable Legal Entities
Operating activities
Income including non-controlling interests	-255	0	0
Adjustments to reconcile income including non-controlling interests to net cash provided by (used in) operating activities
Equity in earnings of subsidiaries	0	0	0
Share compensation expense	0	0	0
Interest expense on deposit liabilities	0	0	0
Net unrealized (gain) loss on investments and derivatives	0	0	0
Net realized gain on investments and derivatives	0	0	0
Amortization of premium and accretion of discount, net	0	0	0
Changes in assets and liabilities:
Reinsurance balances receivable	0	0	0
Deferred acquisition costs, net	0	0	0
Loss and loss adjustment expenses recoverable	0	0
Other assets	-666	0	0
Interest and dividends receivable, net	0	0	0
Unearned premium reserves	0	0	0
Loss and loss adjustment expense reserves	0	0	0
Accounts payable and accrued expenses	518	0	0
Reinsurance balances payable	0	0
Amounts due from affiliates	403	0	0
Amounts due to affiliates	0	0	0
Net cash provided by (used in) operating activities	0	0	0
Investing activities
Purchases of investments	0	0	0
Proceeds from sales of investments	0	0	0
Purchases of investments to cover short sales	0	0	0
Proceeds from short sales of investments	0	0	0
Change in due to/from brokers, net	0	0	0
Increase (decrease) in securities purchased under an agreement to sell	0	0	0
Change in restricted cash and cash equivalents	0	0	0
Contributed capital to subsidiaries		0	0
Net cash used in investing activities	0	0	0
Financing activities
Proceeds from issuance of common shares, net of costs	0	0	0
Increase in deposit liabilities	0	0	0
Non-controlling interest in investment affiliate, net	0	0	0
Non-controlling interest in Catastrophe Fund	0	0	0
Non-controlling interest in Catastrophe Manager			0
Dividend received by (paid to) parent	0
Net cash provided by (used in) financing activities	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of period	0	0	0
Cash and cash equivalents at end of period	0	0	0
Non-Guarantor Subsidiaries | Reportable Legal Entities
Operating activities
Income including non-controlling interests	62,808	234,413	102,562
Adjustments to reconcile income including non-controlling interests to net cash provided by (used in) operating activities
Equity in earnings of subsidiaries	0	0	0
Share compensation expense	8,178	9,800	6,408
Interest expense on deposit liabilities	4,346	4,271	296
Net unrealized (gain) loss on investments and derivatives	85,057	-78,490	-113,271
Net realized gain on investments and derivatives	-193,957	-236,333	-55,632
Amortization of premium and accretion of discount, net	-1,044	-262	-2,434
Changes in assets and liabilities:
Reinsurance balances receivable	-111,886	-107,483	-84,280
Deferred acquisition costs, net	-64,708	-45,810	-45,383
Loss and loss adjustment expenses recoverable	8,463	-9,277
Other assets	432	411	-1,668
Interest and dividends receivable, net	-38	-1,034	-833
Unearned premium reserves	168,622	171,294	93,893
Loss and loss adjustment expense reserves	143,031	67,060	67,271
Accounts payable and accrued expenses	-873	4,154	3,475
Reinsurance balances payable	18,061	9,081
Amounts due from affiliates	519	-353	770
Amounts due to affiliates	4,172	-2,020	-2,152
Net cash provided by (used in) operating activities	131,183	19,422	-30,978
Investing activities
Purchases of investments	-3,114,906	-2,172,077	-2,317,234
Proceeds from sales of investments	2,857,404	1,943,655	1,521,110
Purchases of investments to cover short sales	-232,568	-407,965	-535,443
Proceeds from short sales of investments	278,569	290,770	729,182
Change in due to/from brokers, net	307,884	12,162	-65,678
Increase (decrease) in securities purchased under an agreement to sell	8,294	22,261	-60,408
Change in restricted cash and cash equivalents	-223,730	-115,950	-77,627
Contributed capital to subsidiaries		286,257	170,110
Net cash used in investing activities	-119,053	-140,887	-635,988
Financing activities
Proceeds from issuance of common shares, net of costs	0	0	0
Increase in deposit liabilities	18,048	65,769	50,000
Non-controlling interest in investment affiliate, net	-31,066	27,867	38,913
Non-controlling interest in Catastrophe Fund	6,151	25,324	19,646
Non-controlling interest in Catastrophe Manager			2
Dividend received by (paid to) parent	-8,000
Net cash provided by (used in) financing activities	-14,867	118,960	108,561
Net increase (decrease) in cash and cash equivalents	-2,737	-2,505	-558,405
Cash and cash equivalents at beginning of period	31,331	33,836	592,241
Cash and cash equivalents at end of period	$28,594	$31,331	$33,836

Quarterly_Financial_Results_De

Quarterly Financial Results (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Gross premiums written	$253,802	$126,403	$145,508	$87,587	$162,277	$45,425	$98,215	$96,020	$613,300	$401,937	$190,374
Gross premiums ceded	0	-150	0	0	0	0	0	-9,975	-150	-9,975	0
Net premiums written	253,802	126,253	145,508	87,587	162,277	45,425	98,215	86,045	613,150	391,962	190,374
Change in net unearned premium reserves	-70,230	-17,305	-66,758	-14,325	-103,767	20,904	-35,928	-52,504	-168,618	-171,295	-93,893
Net premiums earned	183,572	108,948	78,750	73,262	58,510	66,329	62,287	33,541	444,532	220,667	96,481
Net investment income	-6,490	1,552	40,485	50,035	89,321	54,617	32,826	81,361	85,582	258,125	136,868
Total revenues	177,082	110,500	119,235	123,297	147,831	120,946	95,113	114,902	530,114	478,792	233,349
Expenses
Loss and loss adjustment expenses incurred, net	132,364	60,115	44,409	46,259	36,133	39,349	45,692	18,638	283,147	139,812	80,306
Acquisition costs, net	43,875	38,317	29,583	25,431	18,833	21,117	14,921	13,073	137,206	67,944	24,604
General and administrative expenses	10,310	10,124	9,549	10,025	8,965	9,846	7,217	7,008	40,008	33,036	27,376
Other expenses	2,606	2,982	1,020	787	2,247	1,246	759	670	7,395	4,922	446
Total expenses	189,155	111,538	84,561	82,502	66,178	71,558	68,589	39,389	467,756	245,714	132,732
Income before income tax expense	-12,073	-1,038	34,674	40,795					62,358	233,078	100,617
Income tax expense	-1,731	-1,542	-2,375	0					-5,648	0	0
Income including non-controlling interests	-13,804	-2,580	32,299	40,795	81,653	49,388	26,524	75,513	56,710	233,078	100,617
Income attributable to non-controlling interests	-875	-3,417	-1,007	-1,016	-1,565	-2,818	-301	-1,083	-6,315	-5,767	-1,216
Net income	($14,679)	($5,997)	$31,292	$39,779	$80,088	$46,570	$26,223	$74,430	$50,395	$227,311	$99,401
Earnings per share
Basic (in dollars per share)	($0.14)	($0.06)	$0.30	$0.38	$0.77	$0.52	$0.33	$0.94	$0.48	$2.58	$1.26
Diluted (in dollars per share)	($0.14)	($0.06)	$0.29	$0.37	$0.75	$0.51	$0.33	$0.93	$0.47	$2.54	$1.26
Weighted average number of common shares used in the determination of earnings per share
Basic (in shares)	103,324,616	103,295,920	103,264,616	103,264,616	103,264,616	89,620,394	78,432,132	78,432,132	103,287,693	87,505,540	78,432,132
Diluted (in shares)	103,324,616	103,295,920	106,433,881	103,413,580	106,390,339	90,915,805	79,254,268	79,083,675	106,391,059	88,970,531	78,598,236

Schedule_I_Summary_of_Investme1

Schedule I - Summary of Investments - Other than Investments in Related Parties (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	$1,729,165
Fair value	1,830,838
Balance sheet value	1,830,838
Equity securities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	1,073,428
Fair value	1,173,635
Balance sheet value	1,173,635
Private common equity securities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	5,431
Fair value	4,161
Balance sheet value	4,161
Total equities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	1,078,859
Fair value	1,177,796
Balance sheet value	1,177,796
Asset-backed securities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	391,179
Fair value	400,234
Balance sheet value	400,234
Bank debts
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	2,438
Fair value	2,395
Balance sheet value	2,395
Corporate bonds
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	47,525
Fair value	60,594
Balance sheet value	60,594
Municipal bonds
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	3,291
Fair value	3,094
Balance sheet value	3,094
Sovereign debt
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	102,500
Fair value	103,331
Balance sheet value	103,331
Total debt securities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	546,933
Fair value	569,648
Balance sheet value	569,648
Investments in limited partnerships
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	85,865
Fair value	62,110
Balance sheet value	62,110
Rights and warrants
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	1,752
Fair value	1,843
Balance sheet value	1,843
Options
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	9,093
Fair value	6,996
Balance sheet value	6,996
Trade claims
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	4,663
Fair value	10,368
Balance sheet value	10,368
Catastrophe bond
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	2,000
Fair value	2,077
Balance sheet value	2,077
Total other investments
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost	103,373
Fair value	83,394
Balance sheet value	$83,394

Schedule_III_Supplementary_Ins1

Schedule III - Supplementary Insurance Information (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Supplementary Insurance Information, by Segment [Line Items]
Deferred acquisition costs, net	$155,901	$91,193	$45,383
Loss and loss adjustment expense reserves	277,362	134,331	67,271
Unearned premium	433,809	265,187	93,893
Net premiums earned	444,532	220,667	96,481
Net investment income	85,582	258,125	136,422
Other Expenses	7,395	4,922	446
Loss and loss adjustment expenses incurred, net	283,147	139,812	80,306
Amortization of deferred acquisition costs, net	137,206	67,944	24,604
Other operating expenses	40,008	33,036	27,376
Net premiums written	613,150	391,962	190,374
Property and Casualty Reinsurance
Supplementary Insurance Information, by Segment [Line Items]
Deferred acquisition costs, net	155,891	91,141	45,383
Loss and loss adjustment expense reserves	277,285	134,221	67,271
Unearned premium	433,757	264,898	93,893
Net premiums earned	432,297	212,607	96,481
Net investment income	11,305	26,953	4,901
Other Expenses	7,395	4,922	446
Loss and loss adjustment expenses incurred, net	283,180	139,616	80,306
Amortization of deferred acquisition costs, net	136,154	66,981	24,604
Other operating expenses	22,515	21,838	20,290
Net premiums written	601,155	383,613	190,374
Catastrophe Risk Management
Supplementary Insurance Information, by Segment [Line Items]
Deferred acquisition costs, net	10	52	0
Loss and loss adjustment expense reserves	77	110	0
Unearned premium	52	289	0
Net premiums earned	12,235	8,060	0
Net investment income	1,227	4,421	0
Other Expenses	0	0	0
Loss and loss adjustment expenses incurred, net	-33	196	0
Amortization of deferred acquisition costs, net	1,052	963	0
Other operating expenses	3,113	3,852	1,534
Net premiums written	11,995	8,349	0
Corporate
Supplementary Insurance Information, by Segment [Line Items]
Deferred acquisition costs, net	0	0	0
Loss and loss adjustment expense reserves	0	0	0
Unearned premium	0	0	0
Net premiums earned	0	0	0
Net investment income	73,050	226,751	131,521
Other Expenses	0	0	0
Loss and loss adjustment expenses incurred, net	0	0	0
Amortization of deferred acquisition costs, net	0	0	0
Other operating expenses	14,380	7,346	5,552
Net premiums written	$0	$0	$0

Schedule_IV_Reinsurance_Detail

Schedule IV - Reinsurance (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Net premiums earned	$183,572	$108,948	$78,750	$73,262	$58,510	$66,329	$62,287	$33,541	$444,532	$220,667	$96,481
Property and Casualty Reinsurance
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Direct gross premiums written									0	0	0
Ceded to other companies									150	9,975	0
Assumed from other companies									613,300	401,937	190,374
Net premiums earned									$613,150	$391,962	$190,374
Percentage of amount assumed to net									100.00%	97.52%	100.00%