Note 8 - Fair Value Measurements and Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2026	Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, Held-for-Sale	$ 678,880		$ 391
Impaired Financing Receivable, with Related Allowance, Recorded Investment 1		$ 39,200
Impaired Financing Receivable, Related Allowance 1		5,500
Impaired Financing Receivable, Fair Value Disclosure		$ 33,700
Loans Held For Sale, Unpaid Principal Balance	753,700
Fair Value, Recurring [Member]
Assets, Fair Value Disclosure	1,367,542		1,286,299
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Recurring [Member]
Assets, Fair Value Disclosure	0		6,512
Collateral Pledged [Member]
Impaired Financing Receivable, with Related Allowance, Recorded Investment 1			800
Impaired Financing Receivable, Related Allowance 1			100
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Held-for-Sale	678,880		0
Loans Receivable, Fair Value Adjustment	23,000
Residential Portfolio Segment [Member]
Financing Receivable, Held-for-Sale	0		$ 391
Multifamily Portfolio Segment [Member]
Loans Held For Sale, Unpaid Principal Balance	753,700
Loan, Held-for-Sale, Fair Value Disclosure	$ 678,900

Fair value portion of impaired financing receivable.

No definition available.

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

No definition available.

+ Details

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- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

No definition available.

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- Definition

The unpaid principal balance on loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

No definition available.

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- Definition

Increase (decrease) in fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of asset recognized for present right to economic benefit.

+ References

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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

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- Definition

Amount, before valuation allowance, of financing receivable classified as held-for-sale.

+ References

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