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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		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Unpaid Principal Balance
Total	$ 27,362		$ 27,362		$ 24,026
Recorded Investment
Total	27,365		27,365		24,050
Allowance for Loan and Lease Losses	1,188		1,188		1,217
Average Recorded Investment	27,588	$ 10,863	26,879	$ 12,168
Interest Income Recognized	62	44	125	89
Cash Basis Interest Recognized	51	48	105	92
Commercial | Commercial and industrial
Unpaid Principal Balance
With no related allowance recorded	5,270		5,270		471
With an allowance recorded	596		596		3,146
Recorded Investment
With no related allowance recorded	5,234		5,234		453
With an allowance recorded	595		595		3,129
Allowance for Loan and Lease Losses	595		595		498
Average Recorded Investment	5,900		5,616
Interest Income Recognized	1		4
Cash Basis Interest Recognized	1		4
Commercial | SBA
Unpaid Principal Balance
With no related allowance recorded	554		554		342
With an allowance recorded	137		137		635
Recorded Investment
With no related allowance recorded	522		522		335
With an allowance recorded	124		124		609
Allowance for Loan and Lease Losses	124		124		435
Average Recorded Investment	654		514
Interest Income Recognized	0		0
Cash Basis Interest Recognized	0		0
Commercial | Construction
Recorded Investment
Average Recorded Investment		0		764
Interest Income Recognized		0		0
Cash Basis Interest Recognized		0		0
Consumer | Single family residential mortgage
Unpaid Principal Balance
With no related allowance recorded	3,989		3,989		7,521
With an allowance recorded	16,042		16,042		7,090
Recorded Investment
With no related allowance recorded	3,995		3,995		7,553
With an allowance recorded	16,145		16,145		7,146
Allowance for Loan and Lease Losses	461		461		277
Average Recorded Investment	20,274	9,985	19,994	10,520
Interest Income Recognized	58	42	115	85
Cash Basis Interest Recognized	47	46	96	89
Consumer | Other consumer
Unpaid Principal Balance
With no related allowance recorded	554		554		4,664
With an allowance recorded	220		220		157
Recorded Investment
With no related allowance recorded	557		557		4,663
With an allowance recorded	193		193		162
Allowance for Loan and Lease Losses	8		8		$ 7
Average Recorded Investment	760	878	755	884
Interest Income Recognized	3	2	6	4
Cash Basis Interest Recognized	$ 3	$ 2	$ 5	$ 3

X

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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.

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