Securities Available for Sale - Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Amortized Cost
Amortized cost, due after 1 year through 5 years	$ 165,871
Amortized Cost, due after 5 years through 10 years	43,519
Amortized Cost, due after 10 years	370,314
Amortized Cost	579,704	$ 399,668
Fair Value
Fair value, due after 1 year through 5 years	171,086
Fair Value, due after 5 years through 10 years	41,089
Fair Value, due after 10 years	311,404
Fair Value	$ 523,579	345,702
Weighted-average Yield, due after 1 year through 5 years	5.19%
Weighted-average Yield, due after 5 years through 10 years	4.19%
Weighted- average Yield, due after 10 years	2.69%
Weighted- average Yield	3.52%
Senior asset-backed securities related to Structured Program transactions
Amortized Cost
Amortized cost, due after 1 year through 5 years	$ 144,529
Amortized Cost	144,529
Fair Value
Fair value, due after 1 year through 5 years	143,924
Fair Value	143,924
Other asset-backed securities related to Structured Program transactions
Amortized Cost
Amortized cost, due after 1 year through 5 years	10,550
Amortized Cost	10,550
Fair Value
Fair value, due after 1 year through 5 years	16,980
Fair Value	16,980
U.S. agency securities
Amortized Cost
Amortized cost, due after 1 year through 5 years	9,000
Amortized Cost, due after 5 years through 10 years	18,847
Amortized Cost, due after 10 years	65,602
Amortized Cost	93,449	90,447
Fair Value
Fair value, due after 1 year through 5 years	8,595
Fair Value, due after 5 years through 10 years	17,257
Fair Value, due after 10 years	53,188
Fair Value	79,040	74,394
Other asset-backed securities
Amortized Cost
Amortized Cost, due after 5 years through 10 years	16,491
Amortized Cost, due after 10 years	12,696
Amortized Cost	29,187	14,959
Fair Value
Fair Value, due after 5 years through 10 years	16,471
Fair Value, due after 10 years	11,995
Fair Value	28,466	14,203
U.S. agency residential mortgage-backed securities
Amortized Cost
Amortized cost, due after 1 year through 5 years	4
Amortized Cost, due after 5 years through 10 years	5,512
Amortized Cost, due after 10 years	249,483
Fair Value
Fair value, due after 1 year through 5 years	4
Fair Value, due after 5 years through 10 years	5,127
Fair Value, due after 10 years	209,385
Fair Value	214,516	214,427
Mortgage-backed securities
Amortized Cost
Amortized cost, due after 1 year through 5 years	1,788
Amortized Cost, due after 5 years through 10 years	2,047
Amortized Cost, due after 10 years	39,888
Amortized Cost	43,723	26,988
Fair Value
Fair value, due after 1 year through 5 years	1,583
Fair Value, due after 5 years through 10 years	1,693
Fair Value, due after 10 years	34,867
Fair Value	38,143	22,518
Municipal securities
Amortized Cost
Amortized Cost, due after 5 years through 10 years	622
Amortized Cost, due after 10 years	2,645
Amortized Cost	3,267	3,277
Fair Value
Fair Value, due after 5 years through 10 years	541
Fair Value, due after 10 years	1,969
Fair Value	$ 2,510	$ 2,443

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through 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).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
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-Name Accounting Standards Codification
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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Amortized cost excluding accrued interest, after allowance for credit loss, 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/2009/role/commonPracticeRef
-Topic 326
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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Weighted average yield of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), 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

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