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Other Real Estate Owned - Schedule of Other Real Estate Owned (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Other Real Estate [Abstract]    
Real estate owned acquired by foreclosure $ 121,262 $ 110,864
Real estate acquired for development or resale 9,199 9,199
Other foreclosed property 1,375 1,473
Total other real estate owned and foreclosed property $ 131,836 $ 121,536