Bank Loans (Schedule of Term Loans Amortized Cost Basis by Origination Year and Revolving Cost Amortized Cost Basis) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | $ 16,743,487 | $ 11,170,813 |
Commercial and Industrial [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 7,345,753 | 4,296,089 |
Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1,811,189 | |
Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 370,794 | |
Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 376,959 | |
Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 513,608 | |
Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 257,735 | |
Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 295,049 | |
Commercial and Industrial [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 3,720,419 | |
Residential Real Estate [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 5,482,026 | 3,956,670 |
Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 2,732,407 | |
Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1,234,315 | |
Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 579,526 | |
Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 241,934 | |
Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 200,109 | |
Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 493,735 | |
Securities-Based Loans [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 2,880,158 | 1,933,974 |
Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 73,341 | |
Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 41,618 | |
Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 92,278 | |
Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 140 | |
Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 10,172 | |
Securities-Based Loans [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 2,662,609 | |
Construction And Land [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 511,084 | 501,681 |
Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 33,187 | |
Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 127,479 | |
Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 182,290 | |
Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 100,120 | |
Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 61,858 | |
Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 6,150 | |
Commercial Real Estate [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 409,847 | 366,485 |
Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 123,920 | |
Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 73,157 | |
Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 142,304 | |
Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 22,200 | |
Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 36,014 | |
Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 12,252 | |
Home Equity Lines Of Credit [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 82,508 | 75,507 |
Home Equity Lines Of Credit [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 82,508 | |
Other [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 32,111 | 40,407 |
Other [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 782 | |
Other [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 10,000 | |
Other [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 286 | |
Other [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 19,156 | |
Other [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1,887 | |
Pass [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 16,553,018 | 10,824,109 |
Pass [Member] | Commercial and Industrial [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 7,193,435 | 3,995,351 |
Pass [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1,811,189 | |
Pass [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 370,279 | |
Pass [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 319,732 | |
Pass [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 450,087 | |
Pass [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 239,314 | |
Pass [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 287,333 | |
Pass [Member] | Commercial and Industrial [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 3,715,501 | |
Pass [Member] | Residential Real Estate [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 5,480,693 | 3,955,421 |
Pass [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 2,732,407 | |
Pass [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1,234,315 | |
Pass [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 579,526 | |
Pass [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 241,934 | |
Pass [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 199,960 | |
Pass [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 492,551 | |
Pass [Member] | Securities-Based Loans [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 2,880,158 | 1,933,974 |
Pass [Member] | Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 73,341 | |
Pass [Member] | Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 41,618 | |
Pass [Member] | Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 92,278 | |
Pass [Member] | Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 140 | |
Pass [Member] | Securities-Based Loans [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 10,172 | |
Pass [Member] | Securities-Based Loans [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 2,662,609 | |
Pass [Member] | Construction And Land [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 476,844 | 467,441 |
Pass [Member] | Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 33,187 | |
Pass [Member] | Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 127,479 | |
Pass [Member] | Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 182,290 | |
Pass [Member] | Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 65,880 | |
Pass [Member] | Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 61,858 | |
Pass [Member] | Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 6,150 | |
Pass [Member] | Commercial Real Estate [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 407,298 | 356,008 |
Pass [Member] | Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 123,920 | |
Pass [Member] | Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 73,157 | |
Pass [Member] | Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 142,304 | |
Pass [Member] | Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 22,199 | |
Pass [Member] | Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 36,014 | |
Pass [Member] | Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 9,704 | |
Pass [Member] | Home Equity Lines Of Credit [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 82,479 | 75,507 |
Pass [Member] | Home Equity Lines Of Credit [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 82,479 | |
Pass [Member] | Other [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 32,111 | 40,407 |
Pass [Member] | Other [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 782 | |
Pass [Member] | Other [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 10,000 | |
Pass [Member] | Other [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 286 | |
Pass [Member] | Other [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 19,156 | |
Pass [Member] | Other [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1,887 | |
Special Mention [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 54,817 | 130,332 |
Special Mention [Member] | Commercial and Industrial [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 38,000 | 105,759 |
Special Mention [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 30,000 | |
Special Mention [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 8,000 | |
Special Mention [Member] | Construction And Land [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 14,240 | 14,240 |
Special Mention [Member] | Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 14,240 | |
Special Mention [Member] | Commercial Real Estate [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 2,548 | 10,333 |
Special Mention [Member] | Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 2,548 | |
Special Mention [Member] | Home Equity Lines Of Credit [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 29 | |
Special Mention [Member] | Home Equity Lines Of Credit [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 29 | |
Substandard [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 127,831 | 202,728 |
Substandard [Member] | Commercial and Industrial [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 107,747 | 182,728 |
Substandard [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 515 | |
Substandard [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 27,227 | |
Substandard [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 55,521 | |
Substandard [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 11,850 | |
Substandard [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 7,716 | |
Substandard [Member] | Commercial and Industrial [Member] | Revolving Loans Amortized Cost Basis [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 4,918 | |
Substandard [Member] | Residential Real Estate [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 84 | |
Substandard [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 84 | |
Substandard [Member] | Construction And Land [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 20,000 | 20,000 |
Substandard [Member] | Construction And Land [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 20,000 | |
Doubtful [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 7,821 | 13,644 |
Doubtful [Member] | Commercial and Industrial [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 6,571 | 12,251 |
Doubtful [Member] | Commercial and Industrial [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 6,571 | |
Doubtful [Member] | Residential Real Estate [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1,249 | 1,249 |
Doubtful [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 149 | |
Doubtful [Member] | Residential Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1,100 | |
Doubtful [Member] | Commercial Real Estate [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | 1 | $ 144 |
Doubtful [Member] | Commercial Real Estate [Member] | Prior [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Term loans amortized cost basis by origination year | $ 1 | |