Loans - Commercial Loans Individually Evaluated for Impairment by Class of Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, related allowance	$ 541
Unpaid Principal Balance, Total	7,347
Recorded Investment, Total	7,351
Average Balance in Impaired Loans, Total	10,395	$ 7,368
Cash/Accrual Interest Income Recognized, Total	490	128
Commercial
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no recorded allowance	6,061
Recorded Investment, With no recorded allowance	6,064
Average Balance in Impaired Loans, With no recorded allowance	9,040	5,454
Cash/Accrual Interest Income Recognized, With no recorded allowance	444	110
Unpaid Principal Balance, With an allowance recorded	1,286
Recorded Investment, With an allowance recorded	1,287
Impaired Financing Receivable, related allowance	541
Average Balance in Impaired Loans, With an allowance recorded	1,355	1,914
Cash/Accrual Interest Income Recognized, With an allowance recorded	46	18
Commercial \| Owner occupied real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no recorded allowance	3,192
Recorded Investment, With no recorded allowance	3,193
Average Balance in Impaired Loans, With no recorded allowance	3,608	3,168
Cash/Accrual Interest Income Recognized, With no recorded allowance	246	77
Unpaid Principal Balance, With an allowance recorded	0
Recorded Investment, With an allowance recorded	0
Impaired Financing Receivable, related allowance	0
Average Balance in Impaired Loans, With an allowance recorded	0	864
Cash/Accrual Interest Income Recognized, With an allowance recorded	0	0
Commercial \| Non–owner occupied real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no recorded allowance	937
Recorded Investment, With no recorded allowance	937
Average Balance in Impaired Loans, With no recorded allowance	2,810	1,096
Cash/Accrual Interest Income Recognized, With no recorded allowance	98	12
Unpaid Principal Balance, With an allowance recorded	119
Recorded Investment, With an allowance recorded	119
Impaired Financing Receivable, related allowance	25
Average Balance in Impaired Loans, With an allowance recorded	130	180
Cash/Accrual Interest Income Recognized, With an allowance recorded	0	4
Commercial \| Residential spec homes
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no recorded allowance	0
Recorded Investment, With no recorded allowance	0
Average Balance in Impaired Loans, With no recorded allowance	0	0
Cash/Accrual Interest Income Recognized, With no recorded allowance	0	0
Unpaid Principal Balance, With an allowance recorded	0
Recorded Investment, With an allowance recorded	0
Impaired Financing Receivable, related allowance	0
Average Balance in Impaired Loans, With an allowance recorded	0	0
Cash/Accrual Interest Income Recognized, With an allowance recorded	0	0
Commercial \| Development & spec land
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no recorded allowance	73
Recorded Investment, With no recorded allowance	73
Average Balance in Impaired Loans, With no recorded allowance	158	71
Cash/Accrual Interest Income Recognized, With no recorded allowance	0	0
Unpaid Principal Balance, With an allowance recorded	0
Recorded Investment, With an allowance recorded	0
Impaired Financing Receivable, related allowance	0
Average Balance in Impaired Loans, With an allowance recorded	0	0
Cash/Accrual Interest Income Recognized, With an allowance recorded	0	0
Commercial \| Commercial and industrial
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no recorded allowance	1,859
Recorded Investment, With no recorded allowance	1,861
Average Balance in Impaired Loans, With no recorded allowance	2,464	1,119
Cash/Accrual Interest Income Recognized, With no recorded allowance	100	21
Unpaid Principal Balance, With an allowance recorded	1,167
Recorded Investment, With an allowance recorded	1,168
Impaired Financing Receivable, related allowance	516
Average Balance in Impaired Loans, With an allowance recorded	1,225	870
Cash/Accrual Interest Income Recognized, With an allowance recorded	$ 46	$ 14

Impaired financing receivable interest income accrual method and cash basis method.

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- Definition

Impaired financing receivable with no related allowance interest income accrual method and cash basis method.

+ References

No definition available.

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- Definition

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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

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-Publisher FASB
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-Section 50
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