Subsequent Events (Assets and Liabilities classified as Held for Sale) (Details) (Subsequent Events [Member], Mt. Mckinley Insurance Company [Member], USD $) In Thousands, unless otherwise specified	Apr. 23, 2015
Subsequent Events [Member] | Mt. Mckinley Insurance Company [Member]
Subsequent Event [Line Items]
Investments and cash	$ 17,000
Reinsurance recoverables	146,000
Deferred tax asset	35,000
Other assets	1,000
Total assets held for sale	199,000
Reserve for losses and loss adjustment expenses	142,000
Deferred gain on retroactive reinsurance	97,000
Other liabilities	1,000
Liabilities of Disposal Group, Including Discontinued Operation, Total	240,000
Net liabilities held for sale	$ (41,000)