Credit Facility	3 Months Ended
Mar. 31, 2012
Credit Facility	Note 11. Credit Facility On April 1, 2011, the Company entered into a $165 million credit facility agreement with ING Bank N.V., London Branch, individually and as Administrative Agent, and a syndicate of lenders. The credit facility, which is denominated in U.S. dollars, is utilized to fund the Company’s participation in Syndicate 1221 through letters of credit for the 2012 and 2011 underwriting years, as well as open prior years. The letters of credit issued under the facility are denominated in British pounds and their aggregate face amount will fluctuate based on exchange rates. If any letters of credit remain outstanding under the facility after December 31, 2012, the Company would be required to post additional collateral to secure the remaining letters of credit. As of March 31, 2012, letters of credit with an aggregate face amount of $150.7 million were outstanding under the credit facility. This credit facility contains customary covenants for facilities of this type, including restrictions on indebtedness and liens, limitations on mergers, dividends and the sale of assets, and requirements as to maintaining certain consolidated tangible net worth, statutory surplus and other financial ratios. The credit facility also provides for customary events of default, including failure to pay principal, interest or fees when due, failure to comply with covenants, any representation or warranty made by the Company being false in any material respect, default under certain other indebtedness, certain insolvency or receivership events affecting the Company and its subsidiaries, the occurrence of certain material judgments, or a change in control of the Company. The letter of credit facility is secured by a pledge of the stock of certain insurance subsidiaries of the Company. To the extent the aggregate face amount issued under the credit facility exceeds the commitment amount, the Company is required to post collateral with the lead bank of the consortium. The Company was in compliance with all covenants under the credit facility as of March 31, 2012. The applicable margin and applicable fee rate payable under the credit facility are based on a tiered schedule that is based on the Company’s then-current ratings issued by S&P and Moody’s with respect to the Company’s Senior Notes without third-party credit enhancement, and the amount of the Company’s own collateral utilized to fund its participation in Syndicate 1221.

Note 11. Credit Facility

On April 1, 2011, the Company entered into a $165 million credit facility agreement with ING Bank N.V., London Branch, individually and as Administrative Agent, and a syndicate of lenders. The credit facility, which is denominated in U.S. dollars, is utilized to fund the Company’s participation in Syndicate 1221 through letters of credit for the 2012 and 2011 underwriting years, as well as open prior years. The letters of credit issued under the facility are denominated in British pounds and their aggregate face amount will fluctuate based on exchange rates. If any letters of credit remain outstanding under the facility after December 31, 2012, the Company would be required to post additional collateral to secure the remaining letters of credit. As of March 31, 2012, letters of credit with an aggregate face amount of $150.7 million were outstanding under the credit facility.

This credit facility contains customary covenants for facilities of this type, including restrictions on indebtedness and liens, limitations on mergers, dividends and the sale of assets, and requirements as to maintaining certain consolidated tangible net worth, statutory surplus and other financial ratios. The credit facility also provides for customary events of default, including failure to pay principal, interest or fees when due, failure to comply with covenants, any representation or warranty made by the Company being false in any material respect, default under certain other indebtedness, certain insolvency or receivership events affecting the Company and its subsidiaries, the occurrence of certain material judgments, or a change in control of the Company. The letter of credit facility is secured by a pledge of the stock of certain insurance subsidiaries of the Company. To the extent the aggregate face amount issued under the credit facility exceeds the commitment amount, the Company is required to post collateral with the lead bank of the consortium. The Company was in compliance with all covenants under the credit facility as of March 31, 2012.

The applicable margin and applicable fee rate payable under the credit facility are based on a tiered schedule that is based on the Company’s then-current ratings issued by S&P and Moody’s with respect to the Company’s Senior Notes without third-party credit enhancement, and the amount of the Company’s own collateral utilized to fund its participation in Syndicate 1221.