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Bank Loans (Activity In The Allowance For Loan Losses By Portfolio Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | $ 111,653 | $ 99,344
Provision | 25,586 | 16,525
Charge-offs | (9,100) | (4,586)
Recoveries | 153 | 370
Ending Balance | 128,292 | 111,653
Commercial and Industrial [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 54,143 | 44,661
Provision | 21,881 | 13,662
Charge-offs | (9,100) | (4,550)
Recoveries | 153 | 370
Ending Balance | 67,077 | 54,143
Commercial Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 12,897 | 3,934
Provision | 8,489 | 8,963
Ending Balance | 21,386 | 12,897
Residential Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 20,441 | 28,560
Provision | (6,586) | (8,119)
Ending Balance | 13,855 | 20,441
Construction And Land [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 8,568 | 8,536
Provision | 3,249 | 32
Ending Balance | 11,817 | 8,568
Fund Banking [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 11,711 | 8,868
Provision | (1,538) | 2,843
Ending Balance | 10,173 | 11,711
Securities-Based Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 3,157 | 4,006
Provision | (122) | (813)
Charge-offs |  | (36)
Ending Balance | 3,035 | 3,157
Home Equity Lines Of Credit [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 364 | 511
Provision | 7 | (147)
Recoveries |  | 0
Ending Balance | 371 | 364
Other [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 372 | 268
Provision | 206 | 104
Charge-offs |  | 0
Recoveries |  | 0
Ending Balance | $ 578 | $ 372

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(4) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481696/310-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
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