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Bank Loans (Activity In The Allowance For Loan Losses By Portfolio Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Beginning Balance | $ 107,482 | $ 99,196 | $ 99,344 | $ 112,029
Provision | 1,550 | (4,903) | 9,722 | (12,534)
Charge-offs | 4,008 | 0 | 4,044 | 5,202
Recoveries | 0 | 0 | 2 | 0
Ending Balance | 105,024 | 94,293 | 105,024 | 94,293
Commercial and Industrial [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Beginning Balance | 67,352 | 46,943 | 53,529 | 67,222
Provision | 903 | (256) | 14,724 | (15,333)
Charge-offs | (4,008) | 0 | (4,008) | (5,202)
Recoveries | 0 | 0 | 2 | 0
Ending Balance | 64,247 | 46,687 | 64,247 | 46,687
Residential Real Estate [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Beginning Balance | 22,615 | 21,267 | 28,560 | 16,300
Provision | (5,150) | 2,637 | (11,095) | 7,604
Ending Balance | 17,465 | 23,904 | 17,465 | 23,904
Construction And Land [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Beginning Balance | 5,854 | 15,953 | 8,536 | 17,275
Provision | 1,675 | 1,620 | (1,007) | (2,942)
Ending Balance | 7,529 | 14,333 | 7,529 | 14,333
Securities-Based Loans [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Beginning Balance | 3,976 | 2,519 | 4,006 | 2,015
Provision | (658) | 808 | (652) | 1,312
Charge-offs |  |  | (36) |
Ending Balance | 3,318 | 3,327 | 3,318 | 3,327
Commercial Real Estate [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Beginning Balance | 6,483 | 11,903 | 3,934 | 8,580
Provision | 5,480 | (6,582) | 8,029 | (3,259)
Ending Balance | 11,963 | 5,321 | 11,963 | 5,321
Home Equity Lines Of Credit [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Beginning Balance | 922 | 426 | 511 | 374
Provision | (724) | 48 | (313) | 100
Recoveries |  | 0 |  | 0
Ending Balance | 198 | 474 | 198 | 474
Other [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Beginning Balance | 280 | 185 | 268 | 263
Provision | 24 | 62 | 36 | (16)
Charge-offs |  | 0 |  | 0
Recoveries |  | 0 |  | 0
Ending Balance | $ 304 | $ 247 | $ 304 | $ 247

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + 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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI https://asc.fasb.org/extlink&oid=122038336&loc=d3e74567-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI https://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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