Fair Value - Schedule of Difference between the Aggregate Fair Value and the Aggregate Remaining Principal Balance (Detail) (Residential Loans Held for Sale [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Residential Loans Held for Sale [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Aggregate Fair Value	$ 13,572	$ 4,366
Difference	(329)	136
Contractual Principal	$ 13,901	$ 4,230