Note 11 - Segment Data (Details Textual)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Number of Operating Segments	1
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers	1
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | One Customer [Member]
Concentration Risk, Percentage	32.20%	22.30%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Geographic Distribution, Foreign [Member]
Concentration Risk, Percentage	18.40%	16.60%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Major Customers	2		1
Customer Concentration Risk [Member] | Accounts Receivable [Member] | One Customer [Member]
Concentration Risk, Percentage	18.60%		16.50%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]
Concentration Risk, Percentage			12.20%
Customer Concentration Risk [Member] | Long-Lived Assets [Member] | Geographic Distribution, Foreign [Member]
Concentration Risk, Percentage	15.80%