LOANS HELD FOR SALE - Portfolio of Loans Held for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts Notes And Loans Receivable [Line Items]
Loans Receivable Held For Sale Net	$ 33,175	$ 43,186
Residential Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans Receivable Held For Sale Net	25,794	27,075
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans Receivable Held For Sale Net	7,381	11,371
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans Receivable Held For Sale Net	0	$ 1,725
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans Receivable Held For Sale Net	$ 0