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Bank Loans (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Mortgage loans held for sale | $ 142,617 |  | $ 142,617 |  | $ 156,912
Gains (losses) recognized from sale of loans | 200 | $ 400 | 2,800 | $ 1,000 |
Accrued interest receivable | 78,200 |  | 78,200 |  | 65,700
Provision for credit losses | 13,418 | 1,550 | 24,911 | 9,722 |
Impaired loans more than 90 days past due | 50,700 |  | 50,700 |  | 10,300
Troubled debt restructurings | 100 |  | 100 |  | 200
Specific allowance | $ 13,100 |  | $ 13,100 |  | $ 6,500
Collateralized loan portfolio | 97.00% |  | 97.00% |  | 97.50%
Residential Real Estate [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Mortgage loans held for sale | $ 142,600 |  | $ 142,600 |  | $ 156,900
Unfunded Commitment [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Provision for credit losses | 3,400 | $ 4,900 | 2,200 | $ 17,800 |
Residential Real Estate [Member] | Asset Pledged as Collateral [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans pledged as collateral | 7,200,000 |  | 7,200,000 |  | 7,000,000
Stifel Bancorp [Member] | Executive Officers and Directors of Certain Affiliated Entities [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans outstanding amount | $ 70,700 |  | $ 70,700 |  | $ 86,400

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- Definition The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -SubTopic 310 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479616/944-310-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 2 -SubTopic 310 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479616/944-310-45-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 310 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479584/944-310-50-1 + Details
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