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Securities - Scheduled Contractual Maturities of HTM Debt Securities (Details) $ in Thousands | Mar. 31, 2024 USD ($)
--- | ---
Amortized cost |
Within One Year | $ 0
After One Year through Five Years | 535,773
After Five Years through Ten Years | 438,202
After Ten Years | 1,974,667
Total | 2,948,642
Fair value |
Within One Year | 0
After One Year through Five Years | 489,801
After Five Years through Ten Years | 371,157
After Ten Years | 1,553,520
Total | $ 2,414,478
Weighted Average Yield |
Within One Year | 0.00%
After One Year through Five Years | 1.05%
After Five Years through Ten Years | 1.83%
After Ten Years | 1.79%
Total | 1.66%
U.S. Treasury securities |
Amortized cost |
Within One Year | $ 0
After One Year through Five Years | 530,921
After Five Years through Ten Years | 0
After Ten Years | 0
Total | 530,921
Fair value |
Within One Year | 0
After One Year through Five Years | 485,400
After Five Years through Ten Years | 0
After Ten Years | 0
Total | $ 485,400
Weighted Average Yield |
Within One Year | 0.00%
After One Year through Five Years | 1.05%
After Five Years through Ten Years | 0.00%
After Ten Years | 0.00%
Total | 1.05%
U.S. government-sponsored enterprises debt securities |
Amortized cost |
Within One Year | $ 0
After One Year through Five Years | 0
After Five Years through Ten Years | 343,666
After Ten Years | 659,031
Total | 1,002,697
Fair value |
Within One Year | 0
After One Year through Five Years | 0
After Five Years through Ten Years | 291,586
After Ten Years | 514,213
Total | $ 805,799
Weighted Average Yield |
Within One Year | 0.00%
After One Year through Five Years | 0.00%
After Five Years through Ten Years | 1.90%
After Ten Years | 1.89%
Total | 1.90%
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities |
Amortized cost |
Within One Year | $ 0
After One Year through Five Years | 4,852
After Five Years through Ten Years | 94,536
After Ten Years | 1,127,031
Total | 1,226,419
Fair value |
Within One Year | 0
After One Year through Five Years | 4,401
After Five Years through Ten Years | 79,571
After Ten Years | 895,298
Total | $ 979,270
Weighted Average Yield |
Within One Year | 0.00%
After One Year through Five Years | 1.40%
After Five Years through Ten Years | 1.59%
After Ten Years | 1.69%
Total | 1.68%
Municipal securities |
Amortized cost |
Within One Year | $ 0
After One Year through Five Years | 0
After Five Years through Ten Years | 0
After Ten Years | 188,605
Total | 188,605
Fair value |
Within One Year | 0
After One Year through Five Years | 0
After Five Years through Ten Years | 0
After Ten Years | 144,009
Total | $ 144,009
Weighted Average Yield |
Within One Year | 0.00%
After One Year through Five Years | 0.00%
After Five Years through Ten Years | 0.00%
After Ten Years | 1.99%
Total | 1.99%

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- Definition Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480832/942-320-50-3 + Details
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- Definition Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480832/942-320-50-3 + Details
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- Definition Weighted average yield of investment in debt security measured at amortized cost (held-to-maturity) maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (a) -Subparagraph (4) -Publisher SEC Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Industry Guide -Number 3 -Section II -Paragraph B -Publisher SEC + Details
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