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Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Assets, Fair Value Disclosure [Abstract] |  |  |
Other Investments |  | $ 131,000 | $ 101,000
Assets and liabilities measured at fair value on a nonrecurring basis [Abstract] |  |  |
Valuation allowance of impaired loans |  | 6,500 | 1,700
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |  |
Transfers out of Level 3 |  | 0 |
Other Liabilities |  |  |
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |  |
Fair value, beginning of period |  | 0 | 0
Total realized gains included in income |  | 0 | 0
Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) |  | 0 | 0
Purchases |  | 0 | 0
Issuances |  | 0 | 0
Settlements |  | 0 | 0
Transfers out of Level 3 |  | 0 | 0
Fair value, December 31 |  | 0 | 0
Other Assets |  |  |
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |  |
Fair value, beginning of period |  | 100,996 | 47,759
Total realized gains included in income |  | 10,605 | 23,109
Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) |  | 0 | 0
Purchases |  | 33,208 | 45,986
Issuances |  | 0 | 0
Settlements |  | (13,827) | (15,858)
Transfers out of Level 3 |  | 0 | 0
Fair value, December 31 |  | 130,982 | 100,996
Available-for-sale Securities |  |  |
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |  |
Fair value, beginning of period |  | 828 | 15,497
Total realized gains included in income |  | 7 | 1,302
Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) |  | (48) | (3,184)
Purchases |  | 0 | 0
Issuances |  | 0 | 0
Settlements |  | (158) | (12,787)
Transfers out of Level 3 |  | 0 | 0
Fair value, December 31 |  | 629 | 828
Fair Value, Measurements, Nonrecurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Total assets at fair value |  | 41,719 | 39,336
Assets and liabilities measured at fair value on a nonrecurring basis [Abstract] |  |  |
Other real estate owned |  | 7,952 | 8,537
Impaired Financing Receivable, with Related Allowance, Recorded Investment | [1] | 33,767 | 30,799
Fair Value, Measurements, Nonrecurring | Quoted Market Prices in an Active Market (Level 1) |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Total assets at fair value |  | 0 | 0
Assets and liabilities measured at fair value on a nonrecurring basis [Abstract] |  |  |
Other real estate owned |  | 0 | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | [1] | 0 | 0
Fair Value, Measurements, Nonrecurring | Models with Significant Observable Market Parameters (Level 2) |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Total assets at fair value |  | 0 | 0
Assets and liabilities measured at fair value on a nonrecurring basis [Abstract] |  |  |
Other real estate owned |  | 0 | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | [1] | 0 | 0
Fair Value, Measurements, Nonrecurring | Models with Significant Unobservable Market Parameters (Level 3) |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Total assets at fair value |  | 41,719 | 39,336
Assets and liabilities measured at fair value on a nonrecurring basis [Abstract] |  |  |
Other real estate owned |  | 7,952 | 8,537
Impaired Financing Receivable, with Related Allowance, Recorded Investment | [1] | 33,767 | 30,799
Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
U.S. treasury securities |  | 194,184 | 193,609
U.S. government agency securities |  | 396,157 | 632,009
Mortgage-backed securities |  | 971,576 | 1,920,239
State and municipal securities |  | 1,412,306 | 1,823,837
Asset-backed securities |  | 117,403 | 229,569
Corporate notes and other, Fair Value Disclosure |  | 467,244 | 114,931
Total investment securities available-for-sale |  | 3,558,870 | 4,914,194
Other Investments |  | 153,011 | 125,969
Other assets |  | 190,629 | 57,441
Total assets at fair value |  | 3,902,510 | 5,097,604
Liabilities at fair value [Abstract] |  |  |
Other liabilities |  | 96,483 | 80,106
Total liabilities at fair value |  | 96,483 | 80,106
Fair Value, Measurements, Recurring | Quoted Market Prices in an Active Market (Level 1) |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
U.S. treasury securities |  | 0 | 0
U.S. government agency securities |  | 0 | 0
Mortgage-backed securities |  | 0 | 0
State and municipal securities |  | 0 | 0
Asset-backed securities |  | 0 | 0
Corporate notes and other, Fair Value Disclosure |  | 0 | 0
Total investment securities available-for-sale |  | 0 | 0
Other Investments |  | 0 | 0
Other assets |  | 0 | 0
Total assets at fair value |  | 0 | 0
Liabilities at fair value [Abstract] |  |  |
Other liabilities |  | 0 | 0
Total liabilities at fair value |  | 0 | 0
Fair Value, Measurements, Recurring | Models with Significant Observable Market Parameters (Level 2) |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
U.S. treasury securities |  | 194,184 | 193,609
U.S. government agency securities |  | 396,157 | 632,009
Mortgage-backed securities |  | 971,576 | 1,920,239
State and municipal securities |  | 1,411,677 | 1,823,009
Asset-backed securities |  | 117,403 | 229,569
Corporate notes and other, Fair Value Disclosure |  | 467,244 | 114,931
Total investment securities available-for-sale |  | 3,558,241 | 4,913,366
Other Investments |  | 22,029 | 24,973
Other assets |  | 190,629 | 57,441
Total assets at fair value |  | 3,770,899 | 4,995,780
Liabilities at fair value [Abstract] |  |  |
Other liabilities |  | 96,483 | 80,106
Total liabilities at fair value |  | 96,483 | 80,106
Fair Value, Measurements, Recurring | Models with Significant Unobservable Market Parameters (Level 3) |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
U.S. treasury securities |  | 0 | 0
U.S. government agency securities |  | 0 | 0
Mortgage-backed securities |  | 0 | 0
State and municipal securities |  | 629 | 828
Asset-backed securities |  | 0 | 0
Corporate notes and other, Fair Value Disclosure |  | 0 | 0
Total investment securities available-for-sale |  | 629 | 828
Other Investments |  | 130,982 | 100,996
Other assets |  | 0 | 0
Total assets at fair value |  | 131,611 | 101,824
Liabilities at fair value [Abstract] |  |  |
Other liabilities |  | 0 | 0
Total liabilities at fair value |  | $ 0 | $ 0
[1] | The carrying values of collateral dependent loans at December 31, 2022 and 2021 are net of valuation allowances of $6.5 million and $1.7 million, respectively.

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents US government treasury and federal agency issued securities. + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents US government treasury securities. + References No definition available. + Details
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- Definition Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 35 -Paragraph 54B -URI https://asc.fasb.org/extlink&oid=126972413&loc=SL7495116-110257 + Details
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