LOAN PORTFOLIO - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Financing Receivable Modifications [Line Items]
Number of Contracts	$ 72,000	$ 63,000
Recorded Investment	7,770,000	2,767,000
Non Fha Va Residential Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	12,000	14,000
Recorded Investment	1,773,000	2,552,000
Commercial Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Commercial And Industrial Loan [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	4,000	0
Recorded Investment	5,745,000	0
Consumer Auto Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	2,000	4,000
Recorded Investment	8,000	39,000
Other Consumer Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	53,000	45,000
Recorded Investment	229,000	176,000
Finance Leases [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	1,000	0
Recorded Investment	15,000	0
Commercial Construction [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Residential Construction [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Land Construction [Member]
Financing Receivable Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	$ 0	$ 0