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, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Activity in allowance for loan losses
Balance, beginning of period	$ 13,440	$ 13,852	$ 13,568	$ 14,747
Provision for loan losses	250	(603)	250	(603)
Charge-offs	(104)	(437)	(587)	(1,431)
Recoveries	264	725	619	824
Balance, end of period	13,850	13,537	13,850	13,537
Commercial
Activity in allowance for loan losses
Balance, beginning of period	9,929	9,815	9,803	11,148
Provision for loan losses	373	(526)	283	(1,307)
Charge-offs	0	(197)	(47)	(810)
Recoveries	126	685	389	746
Balance, end of period	10,428	9,777	10,428	9,777
Commercial \| Commercial Real Estate
Activity in allowance for loan losses
Balance, beginning of period	8,133	8,132	7,883	9,462
Provision for loan losses	215	9	236	(804)
Charge-offs	0	(170)	(26)	(711)
Recoveries	124	64	379	88
Balance, end of period	8,472	8,035	8,472	8,035
Commercial \| Acquisition and Development
Activity in allowance for loan losses
Balance, beginning of period	587	720	850	697
Provision for loan losses	89	(684)	(174)	(639)
Charge-offs	0	0	0	(22)
Recoveries	0	604	0	604
Balance, end of period	676	640	676	640
Commercial \| Commercial and Industrial
Activity in allowance for loan losses
Balance, beginning of period	1,148	844	1,012	806
Provision for loan losses	76	151	225	202
Charge-offs	0	(27)	(21)	(77)
Recoveries	2	17	10	54
Balance, end of period	1,226	985	1,226	985
Commercial \| Municipal
Activity in allowance for loan losses
Balance, beginning of period	61	119	58	183
Provision for loan losses	(7)	(2)	(4)	(66)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	54	117	54	117
Consumer
Activity in allowance for loan losses
Balance, beginning of period	2,886	3,100	2,991	2,381
Provision for loan losses	(122)	(46)	117	1,016
Charge-offs	(104)	(240)	(540)	(621)
Recoveries	138	40	230	78
Balance, end of period	2,798	2,854	2,798	2,854
Consumer \| Residential Mortgage
Activity in allowance for loan losses
Balance, beginning of period	2,706	2,918	2,870	2,262
Provision for loan losses	(119)	(54)	(8)	919
Charge-offs	(57)	(222)	(381)	(574)
Recoveries	96	34	145	69
Balance, end of period	2,626	2,676	2,626	2,676
Consumer \| Installment and Other
Activity in allowance for loan losses
Balance, beginning of period	180	182	121	119
Provision for loan losses	(3)	8	125	97
Charge-offs	(47)	(18)	(159)	(47)
Recoveries	42	6	85	9
Balance, end of period	172	178	172	178
Unallocated
Activity in allowance for loan losses
Balance, beginning of period	625	937	774	1,218
Provision for loan losses	(1)	(31)	(150)	(312)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	$ 624	$ 906	$ 624	$ 906

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

No definition available.

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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

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- Definition

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

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