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Derivative Financial Instruments (Summary Amounts Included in Consolidated Statement of Income Related to Derivatives) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Interest rate swaps and caps | Trading gains (losses), net |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on derivative instruments | $ 3,603 | $ 139
Mortgage banking derivatives | Mortgage banking revenue |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on derivative instruments | (23,470) | (42,652)
Commodity contracts | Trading gains (losses), net |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on derivative instruments | 95 | 0
Foreign exchange contracts | Fees from covered call options |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on derivative instruments | 14,133 | 3,673
Covered call options | Trading gains (losses), net |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on derivative instruments | 85 | (10)
Derivative contract held as economic hedge on MSRs | Mortgage banking revenue |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on derivative instruments | $ (2,165) | $ 0

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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