Loans and Allowance for Credit Losses - Breakdown of Consumer Loan Portfolio by Segment and Type of Loan (Details)	9 Months Ended	12 Months Ended
Sep. 30, 2026 USD ($) loan	Dec. 31, 2025 USD ($) loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 4,192,117,000	$ 3,756,829,000
CCBX
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	2,207,534,000	1,808,094,000
Community Bank
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	1,984,583,000	1,948,735,000
Consumer and other loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 1,653,863,000	$ 1,328,461,000
% of Total Outstanding Balance Consumer Loans	100.00%	100.00%
Average Loan Balance	$ 400	$ 809
Number of Loans \| loan	4,711,200	1,642,431
Consumer and other loans: \| CCBX
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 1,091,049,000	$ 691,708,000
Consumer and other loans: \| CCBX \| Installment Loans - Cash Secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 265,952,000	$ 162,072,000
% of Total Outstanding Balance Consumer Loans	16.10%	12.20%
Consumer and other loans: \| CCBX \| Installment Loans - Unsecured
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 531,411,000	$ 502,767,000
% of Total Outstanding Balance Consumer Loans	32.10%	37.80%
Consumer and other loans: \| CCBX \| Installment Loans - Total
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 797,363,000	$ 664,839,000
% of Total Outstanding Balance Consumer Loans	48.20%	50.00%
Average Loan Balance	$ 300	$ 800
Number of Loans \| loan	2,637,339	864,638
Consumer and other loans: \| CCBX \| Credit Cards - Cash Secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 56,000	$ 56,000
% of Total Outstanding Balance Consumer Loans	0.00%	0.00%
Consumer and other loans: \| CCBX \| Credit Cards - Unsecured
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 552,022,000	$ 622,625,000
% of Total Outstanding Balance Consumer Loans	33.40%	46.90%
Consumer and other loans: \| CCBX \| Credit Cards - Total
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 552,078,000	$ 622,681,000
% of Total Outstanding Balance Consumer Loans	33.40%	46.90%
Average Loan Balance	$ 1,500	$ 1,400
Number of Loans \| loan	378,057	435,236
Consumer and other loans: \| CCBX \| Lines Of Credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 251,707,000	$ 10,027,000
% of Total Outstanding Balance Consumer Loans	15.20%	0.80%
Average Loan Balance	$ 200	$ 100
Number of Loans \| loan	1,336,947	89,736
Consumer and other loans: \| CCBX \| Consumer, Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 41,979,000	$ 16,842,000
% of Total Outstanding Balance Consumer Loans	2.50%	1.30%
Average Loan Balance	$ 100	$ 100
Number of Loans \| loan	358,418	252,381
Consumer and other loans: \| Community Bank
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 10,736,000	$ 14,072,000
Consumer and other loans: \| Community Bank \| Installment Loans - Total
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 672,000	$ 3,010,000
% of Total Outstanding Balance Consumer Loans	0.10%	0.20%
Average Loan Balance	$ 26,900	$ 111,500
Number of Loans \| loan	25	27
Consumer and other loans: \| Community Bank \| Lines Of Credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 196,000	$ 140,000
% of Total Outstanding Balance Consumer Loans	0.00%	0.00%
Average Loan Balance	$ 5,800	$ 4,500
Number of Loans \| loan	34	31
Consumer and other loans: \| Community Bank \| Consumer, Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans receivable	$ 9,868,000	$ 10,922,000
% of Total Outstanding Balance Consumer Loans	0.60%	0.80%
Average Loan Balance	$ 26,000.0	$ 28,600
Number of Loans \| loan	380	382

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Percentage, before allowance for credit loss, of financing receivable to total financing receivable.

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Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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Average amount outstanding, before allowance for credit loss, of financing receivables.

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