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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
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Unpaid Principal Balance
Total	$ 26,027		$ 24,026
Recorded Investment
Total	26,057		24,050
Allowance for Loan and Lease Losses	1,680		1,217
Average Recorded Investment	26,170	$ 13,472
Interest Income Recognized	63	45
Cash Basis Interest Recognized	54	44
Commercial | Commercial and industrial
Unpaid Principal Balance
With no related allowance recorded	4,187		471
With an allowance recorded	1,115		3,146
Recorded Investment
With no related allowance recorded	4,150		453
With an allowance recorded	1,115		3,129
Allowance for Loan and Lease Losses	1,115		498
Average Recorded Investment	5,333	0
Interest Income Recognized	3	0
Cash Basis Interest Recognized	3	0
Commercial | SBA
Unpaid Principal Balance
With no related allowance recorded	237		342
With an allowance recorded	137		635
Recorded Investment
With no related allowance recorded	235		335
With an allowance recorded	124		609
Allowance for Loan and Lease Losses	124		435
Average Recorded Investment	373	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Commercial | Construction
Recorded Investment
Average Recorded Investment	0	1,528
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Consumer | Single family residential mortgage
Unpaid Principal Balance
With no related allowance recorded	5,822		7,521
With an allowance recorded	13,739		7,090
Recorded Investment
With no related allowance recorded	5,842		7,553
With an allowance recorded	13,825		7,146
Allowance for Loan and Lease Losses	420		277
Average Recorded Investment	19,715	11,055
Interest Income Recognized	57	43
Cash Basis Interest Recognized	49	43
Consumer | Other consumer
Unpaid Principal Balance
With no related allowance recorded	294		4,664
With an allowance recorded	496		157
Recorded Investment
With no related allowance recorded	294		4,663
With an allowance recorded	472		162
Allowance for Loan and Lease Losses	21		$ 7
Average Recorded Investment	749	889
Interest Income Recognized	3	2
Cash Basis Interest Recognized	$ 2	$ 1

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

+ References

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)
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