Loans and Allowance for Loan Losses - Summary of Performance Status of Loan (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 1,734,621	$ 1,488,924
Percentage of Nonperforming to Total	1.94%	2.42%
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 1,700,980	$ 1,452,859
Non - Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	33,641	36,065
Recreation [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 1,096,670	$ 961,320
Percentage of Nonperforming to Total	0.51%	0.58%
Recreation [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 1,091,093	$ 955,763
Recreation [Member] | Non - Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	5,577	5,557
Home Improvement [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 526,278	$ 436,772
Percentage of Nonperforming to Total	0.08%	0.03%
Home Improvement [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 525,883	$ 436,640
Home Improvement [Member] | Non - Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	395	132
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 96,928	$ 76,696
Percentage of Nonperforming to Total	13.95%	21.29%
Commercial [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 83,411	$ 60,366
Commercial [Member] | Non - Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	13,517	16,330
Medallion [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 14,152	$ 14,046
Percentage of Nonperforming to Total	100.00%	100.00%
Medallion [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 0	$ 0
Medallion [Member] | Non - Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	14,152	14,046
Strategic Partnership [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 593	$ 90
Percentage of Nonperforming to Total	0.00%	0.00%
Strategic Partnership [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 593	$ 90
Strategic Partnership [Member] | Non - Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Status of loans	$ 0	$ 0