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.

No definition available.

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- Definition

Amount of addition to allowance reserve for credit loss arising from purchase of loan and lease portfolios.

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-Publisher FASB
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Balance Type:	credit
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- Definition

Amount of financing receivable modified as troubled debt restructuring.

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

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Allowance for Loan Losses - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recovery of loan losses	$ (1,182,000)	$ (1,351,000)
Loans modified as TDRs	$ 0	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recovery of loan losses		$ 455,000
Overstated \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses for acquired loans			$ 580,000