Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of Maiden Holdings, Ltd. ("Maiden Holdings") and its subsidiaries (the "Company" or "Maiden"). They have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP" or "U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the U.S. Securities and Exchange Commission ("SEC"). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. All significant inter-company transactions and accounts have been eliminated. These interim unaudited Condensed Consolidated Financial Statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of the results for the interim period and all such adjustments are of a normal recurring nature. The results of operations for the interim period are not necessarily indicative, if annualized, of those to be expected for the full year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. These unaudited Condensed Consolidated Financial Statements, including these notes, should be read in conjunction with the Company's audited Consolidated Financial Statements, and related notes thereto, included in the Company's Annual Report on Form 10-K for the year ended December 31, 2016. Certain reclassifications have been made for 2016 to conform to the 2017 presentation and have no impact on consolidated net income and total equity previously reported.
Recently Adopted Accounting Standards Updates and Recently Issued Accounting Standards Not Yet Adopted	Recently Adopted Accounting Standards Updates Improvements to Employee Share-Based Payment Accounting In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update ("ASU") 2016-09 guidance that outlines changes for certain aspects of share-based payments to employees, such as accounting for forfeitures, which applies to the Company. Under the new guidance, the entities can elect to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. The guidance is effective for public business entities for fiscal year beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted for all entities, in any annual or interim period for which financial statements haven't been issued or made available for issuance, but all of the guidance must be adopted in the same period. Based on the Company's history, forfeitures have never been material. The Company will account for forfeitures as they occur. The adoption of this guidance did not have a material impact on the Company's Condensed Consolidated Financial Statements. There were no forfeitures for the three and nine months ended September 30, 2017. Simplified Accounting for Goodwill Impairment In February 2017, the FASB issued ASU 2017-04 guidance that simplifies the accounting for goodwill impairment for all entities by requiring impairment charges to be based on Step 1 of the two-step impairment test under ASC 350 Intangibles - Goodwill and Other. Under the new guidance, if the carrying value of a reporting unit exceeds its fair value, the Company will record an impairment charge based on that difference. The impairment charge will be limited to the amount of goodwill allocated to that reporting unit. The standard eliminates the requirement to calculate goodwill impairment under Step 2, which calculates any impairment charge by comparing the implied fair value of goodwill with its carrying amount. The Update does not change the guidance on completing Step 1 of the goodwill impairment test. The standard has tiered effective dates, starting in 2020 for calendar public business entities that meet the definition of an SEC filer. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017. Recently Issued Accounting Standards Not Yet Adopted Premium Amortization on Purchased Callable Debt Securities In March 2017, the FASB issued ASU 2017-08 to amend the amortization period for certain purchased callable debt securities held at a premium. Current GAAP excludes certain callable debt securities from consideration of early repayment of principal even if the holder is certain that the call will be exercised. As a result, upon the exercise of a call on a callable debt security held at a premium, the unamortized premium is recorded as a loss in earnings. 2. Significant Accounting Policies (continued) The amendments in ASU 2017-08 affect all entities that hold investments in callable debt securities that have an amortized cost basis in excess of the amount that is repayable by the issuer at the earliest call date. The amendments shorten the amortization period for certain callable debt securities held at a premium and require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. For public business entities, the amendments are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity should apply the amendments on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Additionally, in the period of adoption, an entity should provide disclosures about a change in accounting principle. The Company holds a number of securities with callable features on the Condensed Consolidated Balance Sheet and this includes certain securities that have been purchased at a premium that is being amortized to the associated security's maturity date. The Company is currently evaluating the impact of this guidance on the Company's results of operations, financial position or liquidity at the date of adoption. Scope of Modification Accounting In May 2017, the FASB issued ASU 2017-09 to amend the guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity should account for the effects of a modification unless all the following are met: 1.The fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the modified award is the same as the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the original award immediately before the original award is modified. If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification; 2.The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; and 3.The classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The current disclosure requirements in Topic 718 apply regardless of whether an entity is required to apply modification accounting under the amendments in this Update. The amendments in this Update are effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim period, for (1) public business entities for reporting periods for which financial statements have not yet been issued and (2) all other entities for reporting periods for which financial statements have not yet been made available for issuance. The amendments in this Update should be applied prospectively to an award modified on or after the adoption date. The Company currently has a number of share based payment awards as disclosed in the Annual Report on Form 10-K for the year ended December 31, 2016, however, we do not anticipate any modifications to the terms or conditions at this time. The impact of this guidance on the Company's Condensed Consolidated Financial Statements will be evaluated once ASU-2017-09 is adopted and when the Company makes any modification to any of its current shared based payment awards.

Recently Adopted Accounting Standards Updates

Improvements to Employee Share-Based Payment Accounting

In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update ("ASU") 2016-09 guidance that outlines changes for certain aspects of share-based payments to employees, such as accounting for forfeitures, which applies to the Company. Under the new guidance, the entities can elect to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. The guidance is effective for public business entities for fiscal year beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted for all entities, in any annual or interim period for which financial statements haven't been issued or made available for issuance, but all of the guidance must be adopted in the same period. Based on the Company's history, forfeitures have never been material. The Company will account for forfeitures as they occur. The adoption of this guidance did not have a material impact on the Company's Condensed Consolidated Financial Statements. There were no forfeitures for the three and nine months ended September 30, 2017.

Simplified Accounting for Goodwill Impairment

In February 2017, the FASB issued ASU 2017-04 guidance that simplifies the accounting for goodwill impairment for all entities by requiring impairment charges to be based on Step 1 of the two-step impairment test under ASC 350 Intangibles - Goodwill and Other. Under the new guidance, if the carrying value of a reporting unit exceeds its fair value, the Company will record an impairment charge based on that difference. The impairment charge will be limited to the amount of goodwill allocated to that reporting unit. The standard eliminates the requirement to calculate goodwill impairment under Step 2, which calculates any impairment charge by comparing the implied fair value of goodwill with its carrying amount. The Update does not change the guidance on completing Step 1 of the goodwill impairment test. The standard has tiered effective dates, starting in 2020 for calendar public business entities that meet the definition of an SEC filer. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017.

Recently Issued Accounting Standards Not Yet Adopted

Premium Amortization on Purchased Callable Debt Securities

In March 2017, the FASB issued ASU 2017-08 to amend the amortization period for certain purchased callable debt securities held at a premium. Current GAAP excludes certain callable debt securities from consideration of early repayment of principal even if the holder is certain that the call will be exercised. As a result, upon the exercise of a call on a callable debt security held at a premium, the unamortized premium is recorded as a loss in earnings.

2. Significant Accounting Policies (continued)

The amendments in ASU 2017-08 affect all entities that hold investments in callable debt securities that have an amortized cost basis in excess of the amount that is repayable by the issuer at the earliest call date. The amendments shorten the amortization period for certain callable debt securities held at a premium and require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. For public business entities, the amendments are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity should apply the amendments on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Additionally, in the period of adoption, an entity should provide disclosures about a change in accounting principle.

The Company holds a number of securities with callable features on the Condensed Consolidated Balance Sheet and this includes certain securities that have been purchased at a premium that is being amortized to the associated security's maturity date. The Company is currently evaluating the impact of this guidance on the Company's results of operations, financial position or liquidity at the date of adoption.

Scope of Modification Accounting

In May 2017, the FASB issued ASU 2017-09 to amend the guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity should account for the effects of a modification unless all the following are met:

1.The fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the modified award is the same as the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the original award immediately before the original award is modified. If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification;

2.The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; and

3.The classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified.

The current disclosure requirements in Topic 718 apply regardless of whether an entity is required to apply modification accounting under the amendments in this Update.

The amendments in this Update are effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim period, for (1) public business entities for reporting periods for which financial statements have not yet been issued and (2) all other entities for reporting periods for which financial statements have not yet been made available for issuance. The amendments in this Update should be applied prospectively to an award modified on or after the adoption date.

The Company currently has a number of share based payment awards as disclosed in the Annual Report on Form 10-K for the year ended December 31, 2016, however, we do not anticipate any modifications to the terms or conditions at this time. The impact of this guidance on the Company's Condensed Consolidated Financial Statements will be evaluated once ASU-2017-09 is adopted and when the Company makes any modification to any of its current shared based payment awards.