Reportable Segments, Schedule of Revenue by Major Customers, by Reporting Segments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Customer	Dec. 31, 2013	Dec. 31, 2012
Reportable Segments [Abstract]
Number of reportable segments	2
Property and Casualty Insurance [Member] | FedEx Ground, Certain Subsidiaries, and Related Entities [Member]
Revenue, Major Customer [Line Items]
Number of major customer	1
Direct And Assumed Premiums Written	$ 8,191	$ 15,615	$ 19,052
Property and Casualty Insurance [Member] | Non-affiliated Broker on Behalf of Independent Contractors [Member]
Revenue, Major Customer [Line Items]
Direct And Assumed Premiums Written	$ 208,580	$ 177,389	$ 146,447