Statutory Financial Information and Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2011
Insurance [Abstract]
Capital and surplus of the Insurance Companies		$ 95.0	$ 89.6
Statutory net income (loss) of the Insurance Companies	(9.0)	4.2	(12.7)	(5.9)
Maximum dividends to be paid as a percentage of statutory capital and surplus without the prior approval of the Texas insurance commissioner		10.00%
Ordinary dividends received		$ 0.9