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Fair Value Measurements - Valuation of Financial Instruments that are Marked-to-Market on Recurring Basis (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Assets: |  |
Trading investments | $ 55,903 | $ 37,465
Available-for-sale investments | 2,342,089 | 2,517,956
Derivative instruments | $ 405 | $ 1,317
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other assets | Other assets
Liabilities: |  |
Derivative instruments | $ 0 | $ (247)
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other liabilities | Other liabilities
Fair Value Measurements Recurring |  |
Assets: |  |
Trading investments | $ 55,903 | $ 37,465
Available-for-sale investments | 2,342,089 | 2,517,956
Derivative instruments | 972 | 1,322
Total | 2,398,964 | 2,556,743
Liabilities: |  |
Derivative instruments | (567) | (252)
Fair Value Measurements Recurring | Level 1 |  |
Assets: |  |
Trading investments | 0 | 0
Available-for-sale investments | 0 | 0
Derivative instruments | 0 | 0
Total | 0 | 0
Liabilities: |  |
Derivative instruments | 0 | 0
Fair Value Measurements Recurring | Level 2 |  |
Assets: |  |
Trading investments | 0 | 0
Available-for-sale investments | 2,342,089 | 2,517,956
Derivative instruments | 972 | 1,322
Total | 2,343,061 | 2,519,278
Liabilities: |  |
Derivative instruments | (567) | (252)
Fair Value Measurements Recurring | Level 3 |  |
Assets: |  |
Trading investments | 55,903 | 37,465
Available-for-sale investments | 0 | 0
Derivative instruments | 0 | 0
Total | 55,903 | 37,465
Liabilities: |  |
Derivative instruments | $ 0 | $ 0

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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