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Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Goodwill and Intangible Assets [Roll Forward] |  |  |
Total goodwill, end of period | $ 823,172 | $ 823,172 | $ 765,842
Established through acquisitions | 0 | 57,330 | 0
Core deposit intangible, net, beginning of period | 34,647 |  |
CDI current period amortization | (8,698) | (7,987) | (8,724)
Indefinite-lived Intangible Assets (Excluding Goodwill) | 919 | 919 | 919
Total core deposit intangible, end of period | 25,949 | 34,647 |
Intangible Assets, Net (Excluding Goodwill) | 25,949 | 34,647 | 26,734
Total goodwill and intangible assets, end of period | 849,121 | 857,819 | 792,576
Core Deposits |  |  |
Goodwill and Intangible Assets [Roll Forward] |  |  |
Gross core deposit intangible balance, beginning of period | 88,931 | 78,821 | 105,473
Accumulated amortization, beginning of period | (55,203) | (53,006) | (70,934)
Core deposit intangible, net, beginning of period | 33,728 | 25,815 | 34,539
Established through acquisitions | 0 | 15,900 | 0
CDI current period amortization | (8,698) | (7,987) | (8,724)
Total core deposit intangible, end of period | $ 25,030 | $ 33,728 | $ 25,815
Estimated life of CDI, in years | 10 years |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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