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OTHER REAL ESTATE OWNED- Other real estate owned (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Other Real Estate And Foreclosed Assets [Line Items]    
Other Real Estate And Foreclosed Assets $ 147,940 $ 137,681
Residential Real Estate [Member]    
Other Real Estate And Foreclosed Assets [Line Items]    
Other Real Estate And Foreclosed Assets [1] 54,381 46,917
Commercial Real Estate [Member]    
Other Real Estate And Foreclosed Assets [Line Items]    
Other Real Estate And Foreclosed Assets 82,871 78,698
Construction Real Estate [Member]    
Other Real Estate And Foreclosed Assets [Line Items]    
Other Real Estate And Foreclosed Assets $ 10,688 $ 12,066
[1]
Excludes $21.3 million and $15.0 million as of December 31, 2017 and 2016, respectively, of foreclosures that meet the conditions of ASC 310-40 and are presented as a receivable (other assets) in the statement of financial condition.