Note 10 - Customer and Supplier Concentration (Details Textual)	3 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)
Revenue from Contract with Customer, Including Assessed Tax	$ 11,703,000	$ 10,446,000
Non-US [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 3,460,000	$ 2,660,000
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customers A, B, C and D [Member]
Concentration Risk, Percentage	84.00%	86.00%
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member]
Number of Major Suppliers	0	1
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] | One Supplier [Member]
Concentration Risk, Percentage		10.00%