Note 8 - Revenue - Remaining Performance Obligations (Details)	Sep. 30, 2023 USD ($)
Remaining	$ 2,997,000
Service [Member]
Remaining	1,312,000
Device Revenue [Member]
Remaining	713,000	[1]
Exclusivity Fee [Member]
Remaining	833,000
Other [Member]
Remaining	$ 139,000

[1] Represents the minimum purchase requirements under the distribution agreement the Company signed with its AXP distributor in China.