LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Non Accrual Loans and Loans Past Due 90 Days Still on Accrual (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due 90 days or more and still accruing	$ 0	$ 0
The Company maintains specific allowances for these loans of $80 in 2014 and $95 in 2013	42,754	38,381
Specific allowance on non accrual loans	584	478
Non-Traditional Mortgages (NTM)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due 90 days or more and still accruing	0	0
The Company maintains specific allowances for these loans of $80 in 2014 and $95 in 2013	13,635	14,592
Traditional Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due 90 days or more and still accruing	0	0
The Company maintains specific allowances for these loans of $80 in 2014 and $95 in 2013	$ 29,119	$ 23,789

Financing Receivable, Recorded Investment, Nonaccrual Status, Allowance

No definition available.

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5111-111524

+ Details

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

+ Details

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