Acquistions Acquisitions (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds		$ 16,000,000
Assets of Disposal Group, Including Discontinued Operation		15,000,000
Goodwill	150,551,000us-gaap_Goodwill	150,944,000us-gaap_Goodwill
Premiums and fees receivable	1,706,823,000us-gaap_PremiumsAndOtherReceivablesNet	1,651,088,000us-gaap_PremiumsAndOtherReceivablesNet
After Market Original Equipment Manufacturer
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs		83,000,000
Cash and cash equivalents		17,457,000
Real estate, furniture and equipment		669,000
Goodwill and other intangibles assets		79,646,000
Premiums and fees receivable		24,432,000
Other assets		2,590,000
Total assets acquired		124,794,000
Debt		0
Other liabilities assumed		(34,809,000)
Net assets acquired		82,878,000
London Acquisition, Inactive insurance Company, and Worldwide Supplier of After-market (OEM) Parts [Member]
Business Acquisition [Line Items]
Deferred Tax Liabilities, Net		$ (7,107,000)

The aggregate value (measured at the lower of net carrying value or fair value less cost of disposal) for assets of a disposal group, including a component of the entity (discontinued operation), to be sold or that has been disposed of through sale, as of the financial statement date.

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-Name Accounting Standards Codification

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Amount of assets acquired at the acquisition date.

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

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Carrying amount as of the balance sheet date, net of allowance for doubtful accounts, of all premiums and other types of receivables due from other persons or entities.

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The value of all consideration given or received by the Entity in the significant acquisition or disposal.

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