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Trading Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	$ 4,748,101	$ 4,464,161
Trading Securities, Net Unrealized Gain (Loss)	(108,259)	(323)
U.S. government securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	18,843	9,823
Trading Securities, Net Unrealized Gain (Loss)	8	(16)
Residential agency mortgage-backed securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	4,653,161	4,406,848
Trading Securities, Net Unrealized Gain (Loss)	(107,212)	4
Municipal securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	51,998	21,484
Trading Securities, Net Unrealized Gain (Loss)	(1,175)	(136)
Other trading securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	24,099	26,006
Trading Securities, Net Unrealized Gain (Loss)	$ 120	$ (175)

X

- Definition

Represents the unrealized holding gain or loss included in the fair value of trading securities as of the balance sheet date.

+ References

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- Definition

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+ References

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481830/320-10-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483467/210-10-45-1

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