Dividends Paid to Stockholders' by Insurance Companies Domiciled in the State of Arizona (Details) (Operating Segments [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2013	Mar. 31, 2014
Property and Casualty Insurance [Member] | Repwest [Member]
Statutory financial information of insurance subsidiaries:
Statutory accounting practices, statutory amount available for dividend payments	$ 15.6
Dividend payments restrictions schedule, amounts paid
Life Insurance [Member] | Oxford [Member]
Statutory financial information of insurance subsidiaries:
Statutory accounting practices, statutory amount available for dividend payments			12.1
Dividend payments restrictions schedule, amounts paid