v2.4.0.6

Acquisitions - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended				6 Months Ended			1 Months Ended	3 Months Ended	6 Months Ended	1 Months Ended
	Jun. 30, 2012 Majestic	Jun. 30, 2012 Majestic	Jun. 30, 2011 Majestic	Jun. 01, 2011 Majestic	Jun. 30, 2012 Majestic Distribution Networks and Trademarks	Jun. 30, 2012 Majestic Distribution Networks	Jun. 30, 2012 Majestic Trademarks	Jun. 30, 2011 Majestic Maximum	Dec. 31, 2011 Builders and Trades Men's Insurance Services Inc	Jun. 30, 2012 Builders and Trades Men's Insurance Services Inc	Jun. 30, 2012 Builders and Trades Men's Insurance Services Inc	Dec. 31, 2011 Builders and Trades Men's Insurance Services Inc Renewal Rights	Dec. 31, 2011 Builders and Trades Men's Insurance Services Inc Distribution Networks
Business Acquisition [Line Items]
Advance payment made for acquisition									$ 5,000
Business acquisition profitability measurement period									4 years
Business acquisition, purchase price									47,000
Business acquisition, goodwill and intangibles									59,000
Acquired finite-lived intangible assets, weighted average useful life						13 years	2 years					11 years	17 years
Business acquisition, liability related to an unfavorable lease assumed	390	390							2,400
Fee revenue recorded during acquisition										4,000	11,000
Liability for losses and loss adjustment expenses gross			331,660
Assumed unearned premium reserve			100.00%
Unearned premium reserve amount assumed			25,997
Cash and investments received			224,532
Reserve deficiency			26,000
Reinsurance recoverable			51,715
Percentage of net earned premium paid to acquiree								3.00%
Required loss ratio in the three year period commencing on the losing date								65.00%
Insurance premiums recorded since acquisition date	16,000	35,000
Acquired finite-lived intangible assets					3,870
Liability related to profit sharing provision	815	815
Fair Value of Loss reserve				$ 328,905

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- Definition

Accrued Loss Reserves

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- Definition

Business Acquisition, Initial Purchase Price

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- Definition

Business Acquisition, Percentage of Unearned Premium Reserve Assumed

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- Definition

Business Acquisition, Profitability Measurement Period

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- Definition

Business Acquisition, Purchase Price Allocation, Cash and Investments

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- Definition

Business Acquisition, Purchase Price Allocation, Intangible Assets and Goodwill

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- Definition

Business Acquisition Purchase Price Allocation Loss and Loss Adjustment Expense

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- Definition

Business Acquisition Purchase Price Allocation Reinsurance Recoverable

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- Definition

Business Acquisition, Purchase Price Allocation, Reserve Deficiency

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- Definition

Business Acquisition Purchase Price Allocation Unearned Premium

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- Definition

Business Acquisition Revenue Recorded

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Loss Ratio

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Percentage of Net Earned Premium

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- Definition

The aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 1

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Amount of acquisition cost of a business combination allocated to other liabilities not separately disclosed in the balance sheet.

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No definition available.

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- Definition

The amount of acquisition cost of a business combination allocated to unfavorable contracts assumed from the acquired entity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 37

-Subparagraph k

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 04-1

-Paragraph 4, 8

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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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