Loans and Leases Held for Investment at Amortized Cost, Net of Allowance for Loan and Lease Losses - Nonaccrual and Past Due Table (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Nonaccrual	$ 51,383	$ 34,827
Nonaccrual with no related ACL	$ 11,725	$ 2,617
Nonaccrual Ratios	0.90%	0.70%
Consumer Portfolio Segment
Financing Receivable, Past Due [Line Items]
Nonaccrual	$ 23,719	$ 16,774
Nonaccrual with no related ACL	$ 322	$ 331
Nonaccrual Ratios	0.50%	0.40%
Consumer Portfolio Segment \| Unsecured personal
Financing Receivable, Past Due [Line Items]
Nonaccrual	$ 23,397	$ 16,255
Nonaccrual with no related ACL	0	0
Consumer Portfolio Segment \| Residential mortgages
Financing Receivable, Past Due [Line Items]
Nonaccrual	322	331
Nonaccrual with no related ACL	322	331
Consumer Portfolio Segment \| Secured consumer
Financing Receivable, Past Due [Line Items]
Nonaccrual	0	188
Nonaccrual with no related ACL	0	0
Commercial Portfolio Segment
Financing Receivable, Past Due [Line Items]
Nonaccrual	27,664	18,053
Nonaccrual with no related ACL	$ 11,403	$ 2,286
Nonaccrual Ratios	3.80%	2.30%
Commercial Portfolio Segment \| Equipment finance
Financing Receivable, Past Due [Line Items]
Nonaccrual	$ 683	$ 898
Nonaccrual with no related ACL	0	39
Commercial Portfolio Segment \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Nonaccrual	19,298	1,018
Nonaccrual with no related ACL	9,360	1,018
Commercial Portfolio Segment \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Nonaccrual	7,683	16,137
Nonaccrual with no related ACL	$ 2,043	$ 1,229

Percentage of nonaccrual to total financing receivable outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)
-Publisher SEC

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Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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