Loans and Allowance for Loan Losses - Summary of Nonperforming Loan Portfolio (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	$ 31,149		$ 31,149		$ 36,065
Unpaid principal balance, With related allowance	32,327		32,327		37,007
Related Allowance, With related allowance	10,819		10,819		10,168
Average Investment Recorded, With related allowance	37,099	$ 38,056	37,174	$ 38,819
Interest Income Recognized, With related allowance	114	148	303	425
Recreation [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	7,293		7,293		5,557
Unpaid principal balance, With related allowance	7,293		7,293		5,557
Related Allowance, With related allowance	251		251		188
Average Investment Recorded, With related allowance	6,903	4,423	6,895	4,641
Interest Income Recognized, With related allowance	114	148	303	425
Home Improvement [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	488		488		132
Unpaid principal balance, With related allowance	488		488		132
Related Allowance, With related allowance	9		9		2
Average Investment Recorded, With related allowance	491	161	459	151
Interest Income Recognized, With related allowance	0	0	0	0
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	9,395		9,395		16,330
Unpaid principal balance, With related allowance	9,469		9,469		16,360
Related Allowance, With related allowance	963		963		1,141
Average Investment Recorded, With related allowance	13,494	16,926	13,577	16,531
Interest Income Recognized, With related allowance	0	0	0	0
Medallion [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	13,973		13,973		14,046
Unpaid principal balance, With related allowance	15,077		15,077		14,958
Related Allowance, With related allowance	9,596		9,596		$ 8,837
Average Investment Recorded, With related allowance	16,326	17,101	16,128	16,941
Interest Income Recognized, With related allowance	$ 0	$ 0	$ 0	$ 0

Impaired financing receivable with related allowance interest income and adjusted interest expense accrual method.

No definition available.

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- Definition

Impaired Financing Receivables With Related Allowance Related Allowance

+ References

No definition available.

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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.

+ References

No definition available.

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- Definition

Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

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- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524

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- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

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