Total Gains (Losses) on Assets and Liabilities Measured on Fair Values on Non-Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of assets and liabilities, gains (losses)	$ (581)		$ (8)		$ (864)		$ 882
Loans Held For Sale | Continuing Operations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of assets and liabilities, gains (losses)		[1]		[1]		[1]	2,776	[1]
Loans Held For Sale | Discontinued Operations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of assets and liabilities, gains (losses)			14	[1]		[1]	(1,062)	[1]
Common Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of assets and liabilities, gains (losses)	(581)				(581)
Real estate owned, net | Discontinued Operations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of assets and liabilities, gains (losses)			(22)		(283)		(711)
Commercial And Commercial Real Estate | Discontinued Operations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of assets and liabilities, gains (losses)							$ (121)

[1] Loans held for sale, net were measured at fair value as of March 31, 2012, however, they do not appear in the table presenting financial and nonfinancial assets and liabilities measured using nonrecurring fair value measurements at September 30, 2013 and December 31, 2012 above, as there were no loans classified as held for sale as of those dates