Subsequent Events	12 Months Ended
Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events [Text Block]	23. Subsequent Events On January 25, 2015, the Company entered into the Amalgamation Agreement with AXIS, pursuant to which the Company will amalgamate with AXIS and the two companies will continue as a single Bermuda exempted company (Amalgamated Company). The transaction, which is structured as a merger of equals, has been unanimously approved by the Boards of Directors of both companies. Under the terms of the Amalgamation Agreement, the Company’s shareholders will receive 2.18 shares of the Amalgamated Company’s common shares for each share of the Company’s common shares they own and AXIS’ shareholders will receive one share of the Amalgamated Company’s common shares for each share of AXIS’ common shares they own. Upon completion of the transaction, shareholders of the Company and shareholders of AXIS will own approximately 51.6 percent and 48.4 percent of the Amalgamated Company, respectively. The Amalgamated Company's headquarters will be located in Bermuda. The transaction is expected to close in the second half of 2015, subject to approval by the shareholders of both companies, regulatory clearance and customary closing conditions. Both companies will continue to operate as two independent entities until all such approvals are obtained. In connection with the Amalgamation, Costas Miranthis stepped down as the Chief Executive Officer (CEO) of the Company and as a member of the Company's Board effective January 25, 2015. At that time, David Zwiener, a member of the Company's Board, assumed the position of interim CEO of the Company until completion of the Amalgamation. As a result of the CEO stepping down, the Company expects to recognize an additional pre-tax charge of approximately $22 million during the three months ending March 31, 2015. Under the terms of the Amalgamation Agreement, the Company suspended its share repurchase program until completion of the Amalgamation. Following the announcement of the Amalgamation, Moody's affirmed the Company's rating with a stable outlook. Standard & Poor's (S&P), A.M. Best and Fitch placed the Company’s rating on credit watch negative, under review with negative implications and ratings watch negative, respectively. All three agencies cited concerns over the transaction, including the risks associated with the execution and integration, along with management retention risk in light of the complexity and scale of the Amalgamation. The Company is in dialogue with each rating agency to address their rating concerns. The status of any further changes to ratings or outlooks will depend on various factors, including the timing of the closing, if and when it occurs, and success of the integration.

23. Subsequent Events

On January 25, 2015, the Company entered into the Amalgamation Agreement with AXIS, pursuant to which the Company will amalgamate with AXIS and the two companies will continue as a single Bermuda exempted company (Amalgamated Company). The transaction, which is structured as a merger of equals, has been unanimously approved by the Boards of Directors of both companies. Under the terms of the Amalgamation Agreement, the Company’s shareholders will receive 2.18 shares of the Amalgamated Company’s common shares for each share of the Company’s common shares they own and AXIS’ shareholders will receive one share of the Amalgamated Company’s common shares for each share of AXIS’ common shares they own. Upon completion of the transaction, shareholders of the Company and shareholders of AXIS will own approximately 51.6 percent and 48.4 percent of the Amalgamated Company, respectively. The Amalgamated Company's headquarters will be located in Bermuda. The transaction is expected to close in the second half of 2015, subject to approval by the shareholders of both companies, regulatory clearance and customary closing conditions. Both companies will continue to operate as two independent entities until all such approvals are obtained.

In connection with the Amalgamation, Costas Miranthis stepped down as the Chief Executive Officer (CEO) of the Company and as a member of the Company's Board effective January 25, 2015. At that time, David Zwiener, a member of the Company's Board, assumed the position of interim CEO of the Company until completion of the Amalgamation. As a result of the CEO stepping down, the Company expects to recognize an additional pre-tax charge of approximately $22 million during the three months ending March 31, 2015.

Under the terms of the Amalgamation Agreement, the Company suspended its share repurchase program until completion of the Amalgamation.

Following the announcement of the Amalgamation, Moody's affirmed the Company's rating with a stable outlook. Standard & Poor's (S&P), A.M. Best and Fitch placed the Company’s rating on credit watch negative, under review with negative implications and ratings watch negative, respectively. All three agencies cited concerns over the transaction, including the risks associated with the execution and integration, along with management retention risk in light of the complexity and scale of the Amalgamation. The Company is in dialogue with each rating agency to address their rating concerns. The status of any further changes to ratings or outlooks will depend on various factors, including the timing of the closing, if and when it occurs, and success of the integration.