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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, 2019	Mar. 31, 2018	Dec. 31, 2018
Unpaid Principal Balance
Total	$ 33,105		$ 27,027
Recorded Investment
Total	32,964		26,945
Allowance for Loan and Lease Losses	1,945		829
Average Recorded Investment	32,156	$ 26,170
Interest Income Recognized	65	63
Cash Basis Interest Recognized	56	54
Commercial | Commercial and industrial
Unpaid Principal Balance
With no related allowance recorded	4,849		5,491
With an allowance recorded	48		0
Recorded Investment
With no related allowance recorded	4,813		5,455
With an allowance recorded	48		0
Allowance for Loan and Lease Losses	48		0
Average Recorded Investment	5,048	5,333
Interest Income Recognized	0	3
Cash Basis Interest Recognized	0	3
Commercial | Commercial real estate
Unpaid Principal Balance
With no related allowance recorded	572		0
Recorded Investment
With no related allowance recorded	573		0
Average Recorded Investment	577
Interest Income Recognized	0
Cash Basis Interest Recognized	0
Commercial | SBA
Unpaid Principal Balance
With no related allowance recorded	1,475		1,668
With an allowance recorded	2,499		823
Recorded Investment
With no related allowance recorded	1,409		1,588
With an allowance recorded	2,399		788
Allowance for Loan and Lease Losses	1,634		562
Average Recorded Investment	3,845	373
Interest Income Recognized	4	0
Cash Basis Interest Recognized	4	0
Commercial | Construction
Unpaid Principal Balance
With no related allowance recorded	2,519		0
Recorded Investment
With no related allowance recorded	2,519		0
Average Recorded Investment	2,519
Interest Income Recognized	0
Cash Basis Interest Recognized	0
Consumer | Single family residential mortgage
Unpaid Principal Balance
With no related allowance recorded	8,788		12,115
With an allowance recorded	11,496		5,993
Recorded Investment
With no related allowance recorded	8,802		12,161
With an allowance recorded	11,560		6,032
Allowance for Loan and Lease Losses	230		161
Average Recorded Investment	19,323	19,715
Interest Income Recognized	58	57
Cash Basis Interest Recognized	49	49
Consumer | Other consumer
Unpaid Principal Balance
With no related allowance recorded	469		469
With an allowance recorded	390		468
Recorded Investment
With no related allowance recorded	469		469
With an allowance recorded	372		452
Allowance for Loan and Lease Losses	33		$ 106
Average Recorded Investment	844	749
Interest Income Recognized	3	3
Cash Basis Interest Recognized	$ 3	$ 2

X

- Definition

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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