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Loans and Allowance for Credit Losses - CECL Allowance by Geographical Location (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2025
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 23,424	$ 23,662
Provision for (recovery of) credit losses related to loans	812	2,788
Reclassification of loans held for sale to loans held for investment	0	3,292
Charge-offs	(8,449)	(13,955)
Ending balance	15,787	15,787
Loans held for investment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	17,645	18,470
Provision for (recovery of) credit losses related to loans	(3,923)	(6,905)
Reclassification of loans held for sale to loans held for investment	0	3,292
Charge-offs	(2,639)	(3,774)
Ending balance	11,083	11,083
New England | Loans held for investment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	10,466	12,844
Provision for (recovery of) credit losses related to loans	(4,162)	(9,832)
Reclassification of loans held for sale to loans held for investment	0	3,292
Charge-offs	0	0
Ending balance	6,304	6,304
Mid-Atlantic | Loans held for investment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,056	1,857
Provision for (recovery of) credit losses related to loans	(255)	2,411
Reclassification of loans held for sale to loans held for investment	0	0
Charge-offs	(2,639)	(3,106)
Ending balance	1,162	1,162
South | Loans held for investment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,290	1,802
Provision for (recovery of) credit losses related to loans	449	605
Reclassification of loans held for sale to loans held for investment	0	0
Charge-offs	0	(668)
Ending balance	1,739	1,739
West | Loans held for investment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,833	1,967
Provision for (recovery of) credit losses related to loans	45	(89)
Reclassification of loans held for sale to loans held for investment	0	0
Charge-offs	0	0
Ending balance	$ 1,878	$ 1,878

X

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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X

- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

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- Definition

Amount, excluding accrued interest, of credit loss expense on financing receivable transferred into held-for-investment out of held-for-sale classification. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
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-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477011/948-310-45-2

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