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LOANS AND LEASES (Acquired credit impaired loans receivable) (Detail) - USD ($)
$ in Thousands
Mar. 31, 2018
Jan. 01, 2018
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period [Abstract]    
Contractual principal and interest at acquisition   $ 28,502
Contractual cash flows not expected to be collected (Nonaccretable yield)   (9,027)
Expected cash flows at acquisition   19,475
Interest component of expected cash flows (Accretable yield)   (2,511)
Fair value of purchase credit impaired loans $ 0 $ 16,964