Note 14 - Fair Value Measurements - Reconciliation of Level 3 Instruments (Details) $ in Thousands	3 Months Ended
Apr. 30, 2023 USD ($)
Balance at beginning	$ 4,754
Unrealized gains	(2,852)
Balance at end	$ 1,902

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant