LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Activity in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Activity in allowance for loan losses
Balance, beginning of period	$ 13,852	$ 20,425	$ 14,747	$ 20,965
Provision for loan losses	(603)	(2,900)	(603)	(2,900)
Charge-offs	(437)	(2,238)	(1,431)	(3,340)
Recoveries	725	732	824	1,294
Balance, end of period	13,537	16,019	13,537	16,019
Commercial
Activity in allowance for loan losses
Balance, beginning of period	9,815	16,076	11,148	14,993
Provision for loan losses	(526)	(3,255)	(1,307)	(1,892)
Charge-offs	(197)	(1,874)	(810)	(2,645)
Recoveries	685	699	746	1,190
Balance, end of period	9,777	11,646	9,777	11,646
Commercial \| Commercial Real Estate
Activity in allowance for loan losses
Balance, beginning of period	8,132	14,053	9,462	13,215
Provision for loan losses	9	(2,593)	(804)	(1,210)
Charge-offs	(170)	(1,840)	(711)	(2,514)
Recoveries	64	382	88	511
Balance, end of period	8,035	10,002	8,035	10,002
Commercial \| Acquisition and Development
Activity in allowance for loan losses
Balance, beginning of period	720	852	697	670
Provision for loan losses	(684)	(284)	(639)	(73)
Charge-offs	0	(33)	(22)	(67)
Recoveries	604	0	604	5
Balance, end of period	640	535	640	535
Commercial \| Commercial and Industrial
Activity in allowance for loan losses
Balance, beginning of period	844	993	806	864
Provision for loan losses	151	(387)	202	(552)
Charge-offs	(27)	(1)	(77)	(64)
Recoveries	17	317	54	674
Balance, end of period	985	922	985	922
Commercial \| Municipal
Activity in allowance for loan losses
Balance, beginning of period	119	178	183	244
Provision for loan losses	(2)	9	(66)	(57)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	117	187	117	187
Consumer
Activity in allowance for loan losses
Balance, beginning of period	3,100	2,548	2,381	3,904
Provision for loan losses	(46)	138	1,016	(958)
Charge-offs	(240)	(364)	(621)	(695)
Recoveries	40	33	78	104
Balance, end of period	2,854	2,355	2,854	2,355
Consumer \| Residential Mortgage
Activity in allowance for loan losses
Balance, beginning of period	2,918	2,362	2,262	3,780
Provision for loan losses	(54)	72	919	(1,150)
Charge-offs	(222)	(286)	(574)	(495)
Recoveries	34	6	69	19
Balance, end of period	2,676	2,154	2,676	2,154
Consumer \| Installment and other loans
Activity in allowance for loan losses
Balance, beginning of period	182	186	119	124
Provision for loan losses	8	66	97	192
Charge-offs	(18)	(78)	(47)	(200)
Recoveries	6	27	9	85
Balance, end of period	178	201	178	201
Unallocated
Activity in allowance for loan losses
Balance, beginning of period	937	1,801	1,218	2,068
Provision for loan losses	(31)	217	(312)	(50)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	$ 906	$ 2,018	$ 906	$ 2,018

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

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