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Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Research and Development Expense	$ 633	$ 529
Revenue from Contract with Customer, Excluding Assessed Tax	11,185	9,367
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Largest Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,875	$ 2,334
Concentration Risk, Percentage	43.60%	24.90%
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Second Largest Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,203	$ 1,009
Concentration Risk, Percentage	19.70%	10.80%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Major Customers	4		4
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Four Largest Customers [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,227		$ 3,774
Concentration Risk, Percentage	73.60%		76.40%

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