Note 15 - Foreign Operations - Long-lived Assets by Country (Details) - USD ($)	Sep. 30, 2026	Jun. 30, 2026
Long-lived assets	$ 64,835,323	$ 64,111,171
UNITED STATES
Long-lived assets	57,402,007	56,884,880
LATVIA
Long-lived assets	5,497,786	5,176,771
CHINA
Long-lived assets	$ 1,935,530	$ 2,049,520

Amount of long-lived asset, excluding financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax asset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant