Policy Benefits and Losses, Claims and Loss Expenses Payable for Property and Casualty Insurance (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012	Mar. 31, 2011
Reinsurance:
Total	$ 1,082,598		$ 1,115,048
Operating Segments [Member] | Property and Casualty Insurance [Member]
Reinsurance:
Unpaid losses and loss adjustment expense	295,126		330,093		382,328	276,355
Reinsurance losses payable	90		91
Total	$ 295,216	[1]	$ 330,184	[2]

[1] Balances as of December 31, 2013

[2] Balances as of December 31, 2012