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Loans And Allowance For Credit Losses (Summary Classification Of Held To Maturity Loan Portfolio) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans | [1] | $ 16,329,641 | $ 14,737,817
Interest Receivable |  | 41,900 |
Commercial Portfolio Segment [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Accrued Interest Receivable on Held for Investment Loans, Write Off |  | 329 |
Personal Banking Portfolio Segment [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Accrued Interest Receivable on Held for Investment Loans, Write Off |  | 5,700 |
Business [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans |  | 6,546,087 | 5,565,449
Real Estate - Construction And Land [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans |  | 1,021,595 | 899,377
Real Estate - Business [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans |  | 3,026,117 | 2,833,554
Real Estate - Personal [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans |  | 2,820,030 | 2,354,760
Consumer [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans |  | 1,950,502 | 1,964,145
Revolving Home Equity [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans |  | 307,083 | 349,251
Consumer Credit Card [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans |  | 655,078 | 764,977
Overdrafts [Member] |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |
Total loans |  | $ 3,149 | $ 6,304
[1] | (1) Accrued interest receivable totaled $41.9 million at December 31, 2020 and was included within other assets on the consolidated balance sheet. For the year ended December 31, 2020, the Company wrote-off accrued interest by reversing interest income of $329 thousand and $5.7 million in the Commercial and Personal Banking portfolios, respectively.

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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes 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 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522 + Details
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