LOAN PORTFOLIO - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 numberofcontracts	Dec. 31, 2013 numberofcontracts
Financing Receivable Modifications [Line Items]
Number of contracts	352	139
Recorded investment	$ 16,075	$ 63,941
Non Fha Va Residential Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Number of contracts	55	81
Recorded investment	8,087	13,415
Commercial Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Number of contracts	2	1
Recorded investment	4,604	46,102
Commercial And Industrial Loan [Member]
Financing Receivable Modifications [Line Items]
Number of contracts	2	2
Recorded investment	1,537	3,829
Consumer Auto Loans [Member]
Financing Receivable Modifications [Line Items]
Number of contracts	45	9
Recorded investment	697	86
Other Consumer Loans [Member]
Financing Receivable Modifications [Line Items]
Number of contracts	6	3
Recorded investment	115	38
Finance Leases [Member]
Financing Receivable Modifications [Line Items]
Number of contracts	241	40
Recorded investment	989	219
Residential Construction [Member]
Financing Receivable Modifications [Line Items]
Number of contracts	0	1
Recorded investment	0	186
Land Construction [Member]
Financing Receivable Modifications [Line Items]
Number of contracts	1	2
Recorded investment	$ 46	$ 66