Debt Securities Held to Maturity - Continuous Unrealized Loss Position on Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value
Less Than 12 Months	$ 16,685	$ 0
12 Months or Longer	350,800	357,177
Total	367,485	357,177
Gross Unrealized (Losses)
Less Than 12 Months	(85)	0
12 Months or Longer	(33,687)	(43,977)
Total	(33,772)	(43,977)
U.S. government and agency obligations
Fair Value
Less Than 12 Months	0	0
12 Months or Longer	40,492	43,969
Total	40,492	43,969
Gross Unrealized (Losses)
Less Than 12 Months	0	0
12 Months or Longer	(4,379)	(5,902)
Total	(4,379)	(5,902)
Mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	16,685	0
12 Months or Longer	310,308	313,208
Total	326,993	313,208
Gross Unrealized (Losses)
Less Than 12 Months	(85)	0
12 Months or Longer	(29,308)	(38,075)
Total	$ (29,393)	$ (38,075)

Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-7

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-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
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-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

+ References

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-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for less than 12 months.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer.

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