Nonaccrual Loans (Details) - Non-performing - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	$ 22,256	$ 11,631
Financing Receivable, Nonaccrual, With Allowance	2,339	144
Financing Receivable, Excluding Accrued Interest, Nonaccrual	24,595	11,775
One-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	1,519	3,554
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	1,519	3,554
Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	3,937	2,238
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	3,937	2,238
Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	4,545	4,522
Financing Receivable, Nonaccrual, With Allowance	2,202	0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	6,747	4,522
Business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	12,255	1,317
Financing Receivable, Nonaccrual, With Allowance	104	100
Financing Receivable, Excluding Accrued Interest, Nonaccrual	12,359	1,417
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	0	0
Financing Receivable, Nonaccrual, With Allowance	33	44
Financing Receivable, Excluding Accrued Interest, Nonaccrual	$ 33	$ 44

Financing Receivable, Nonaccrual, With Allowance

No definition available.

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. 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 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. 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 16
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-80

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