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Note 11 - Reinsurance - Schedule of Ceded Premiums (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Reinsurance Retention [Line Items]
Ceded premiums written	$ 1,064,230	$ 897,111	$ 731,531
Ceded Written Premiums Under Fronting and Quota Share Arrangements [Member]
Reinsurance Retention [Line Items]
Ceded premiums written	804,246	654,597	526,280
Ceded Written Premiums Under Fronting and Quota Share Arrangements [Member] | Casualty
Reinsurance Retention [Line Items]
Ceded premiums written	235,119	86,120	36,677
Ceded Written Premiums Under Fronting and Quota Share Arrangements [Member] | Fronting
Reinsurance Retention [Line Items]
Ceded premiums written	203,813	312,173	339,376
Ceded Written Premiums Under Fronting and Quota Share Arrangements [Member] | Crop
Reinsurance Retention [Line Items]
Ceded premiums written	176,200	109,975	12,110
Ceded Written Premiums Under Fronting and Quota Share Arrangements [Member] | Inland Marine and Other Property
Reinsurance Retention [Line Items]
Ceded premiums written	145,223	103,863	108,409
Ceded Written Premiums Under Fronting and Quota Share Arrangements [Member] | Earthquake
Reinsurance Retention [Line Items]
Ceded premiums written	$ 43,891	$ 42,466	$ 29,708

X

- Definition

Amount of written premiums ceded to other entities.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-12

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479032/944-605-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479032/944-605-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479838/944-20-50-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479838/944-20-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: