Loans Held-For-Sale - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Mar. 31, 2013 Subordinated Interests in Mortgages [Member]	Mar. 31, 2013 Loans Held-for-Sale, Net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount reclassified on subordinate mortgage loan			$ 6,600	$ 4,600
Recovery of valuation allowance on loans held for sale	$ 2,000	$ 1,800