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Note 4 - Segment Information - Customers Accounted for 10% or More of Revenue (Details) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Customer A [Member]    
Entity wide revenue major customers percentage 42.00% 50.00%
Customer B [Member]    
Entity wide revenue major customers percentage 18.00% 23.00%
Customer C [Member]    
Entity wide revenue major customers percentage 14.00%