Note 17 - Subsequent Events (Details Textual) - Regeneron Collaboration Agreement [Member] $ in Millions	Oct. 28, 2025 USD ($)
Subsequent Event [Line Items]
Collaborative Arrangement, Upfront Payments	$ 7.0
Minimum [Member]
Subsequent Event [Line Items]
Product selection, clinical and regulatory milestone and commercial milestone payments	200.0
Overall value of the collaboration	$ 1,000.0

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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