Note 11 - Customer and Supplier Concentration (Details Textual)	3 Months Ended		12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Revenue from Contract with Customer, Including Assessed Tax	$ 9,768,000	$ 12,338,000	$ 44,917,000	$ 43,629,000
Non-US [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 2,417,000	$ 3,366,000	$ 11,385,000	$ 12,129,000
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customers A, B, C and D [Member]
Concentration Risk, Percentage			86.00%	90.00%
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member]
Number of Major Suppliers	0	1	0	1
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] | One Supplier [Member]
Concentration Risk, Percentage			10.00%	10.00%