Loans and Allowance for Loan Losses - Summary of Nonperforming Loan Portfolio (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	$ 33,641		$ 33,641		$ 36,065
Unpaid principal balance, With related allowance	34,751		34,751		37,007
Related Allowance, With related allowance	12,345		12,345		10,168
Average Investment Recorded, With related allowance	35,265	$ 42,600	36,012	$ 43,343
Interest Income Recognized, With related allowance	119	180	223	323
Recreation [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	5,577		5,577		5,557
Unpaid principal balance, With related allowance	5,577		5,577		5,557
Related Allowance, With related allowance	192		192		188
Average Investment Recorded, With related allowance	5,197	4,799	5,265	4,912
Interest Income Recognized, With related allowance	119	180	223	323
Home Improvement [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	395		395		132
Unpaid principal balance, With related allowance	395		395		132
Related Allowance, With related allowance	7		7		2
Average Investment Recorded, With related allowance	396	74	388	75
Interest Income Recognized, With related allowance	0	0	0	0
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	13,517		13,517		16,330
Unpaid principal balance, With related allowance	13,577		13,577		16,360
Related Allowance, With related allowance	2,720		2,720		1,141
Average Investment Recorded, With related allowance	13,577	19,210	13,561	19,788
Interest Income Recognized, With related allowance	0	0	0	0
Medallion [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment, With related allowance	14,152		14,152		14,046
Unpaid principal balance, With related allowance	15,202		15,202		14,958
Related Allowance, With related allowance	9,426		9,426		$ 8,837
Average Investment Recorded, With related allowance	16,095	18,517	16,798	18,568
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 http://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 http://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 http://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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