LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Loans and Leases Individually Evaluated for Impairment by Class of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Unpaid Principal Balance
Total	$ 10,800		$ 10,800		$ 13,409
Recorded Investment
Total	10,844		10,844		13,352
Allowance for Loan and Lease Losses	424		424		243
Average Recorded Investment	10,863	$ 39,042	12,168	$ 39,281
Interest Income Recognized	44	380	89	741
Cash Basis Interest Recognized	48	370	92	735
Commercial \| Commercial and industrial
Unpaid Principal Balance
With no related allowance recorded	0		0		2,478
Recorded Investment
With no related allowance recorded	0		0		2,429
Average Recorded Investment		3,500		4,048
Interest Income Recognized		55		118
Cash Basis Interest Recognized		55		143
Commercial \| Construction
Recorded Investment
Average Recorded Investment	0		764
Interest Income Recognized	0		0
Cash Basis Interest Recognized	0		0
Commercial \| Commercial real estate
Recorded Investment
Average Recorded Investment		285		295
Interest Income Recognized		14		24
Cash Basis Interest Recognized		14		24
Consumer \| Single family residential mortgage
Unpaid Principal Balance
With no related allowance recorded	6,525		6,525		8,865
With an allowance recorded	3,402		3,402		1,772
Recorded Investment
With no related allowance recorded	6,550		6,550		8,887
With an allowance recorded	3,421		3,421		1,742
Allowance for Loan and Lease Losses	424		424		243
Average Recorded Investment	9,985	34,963	10,520	34,644
Interest Income Recognized	42	309	85	595
Cash Basis Interest Recognized	46	298	89	563
Consumer \| Other consumer
Unpaid Principal Balance
With no related allowance recorded	873		873		294
Recorded Investment
With no related allowance recorded	873		873		$ 294
Average Recorded Investment	878	294	884	294
Interest Income Recognized	2	2	4	4
Cash Basis Interest Recognized	$ 2	$ 3	$ 3	$ 5

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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