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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, 2019 | Dec. 31, 2018
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | $ 85,833 | $ 67,466
Provision | 9,977 | 18,366
Charge-offs | (386) | (14)
Recoveries | 155 | 15
Ending Balance | 95,579 | 85,833
Commercial And Industrial [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 68,367 | 54,474
Provision | 1,821 | 13,896
Charge-offs | (239) | (12)
Recoveries |  | 9
Ending Balance | 69,949 | 68,367
Residential Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 11,228 | 8,430
Provision | 2,974 | 2,798
Charge-offs | (41) |
Recoveries | 92 |
Ending Balance | 14,253 | 11,228
Securities-Based Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 1,978 | 2,088
Provision | 383 | (110)
Ending Balance | 2,361 | 1,978
Commercial Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 1,778 | 1,520
Provision | 1,786 | 258
Ending Balance | 3,564 | 1,778
Construction And Land [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 1,241 | 100
Provision | 3,372 | 1,141
Ending Balance | 4,613 | 1,241
Home Equity Lines Of Credit [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 310 | 162
Provision | 129 | 145
Recoveries | 3 | 3
Ending Balance | 442 | 310
Other [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 88 | 16
Provision | 152 | 71
Charge-offs | (106) | (2)
Recoveries | 60 | 3
Ending Balance | 194 | 88
Qualitative [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Beginning Balance | 843 | 676
Provision | (640) | 167
Ending Balance | $ 203 | $ 843

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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 http://asc.fasb.org/extlink&oid=118936363&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 http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 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 http://asc.fasb.org/extlink&oid=118936363&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 http://asc.fasb.org/extlink&oid=118939070&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 http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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