LOANS HELD FOR SALE - Portfolio of Loans Held for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	$ 43,186	$ 32,980
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	27,075	24,690
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	11,371	0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	1,725	0
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	$ 3,015	$ 8,290