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Note 4 - Revenue Recognition 2 (Details Textual)
$ in Thousands
Mar. 31, 2022
USD ($)
Revenue, Remaining Performance Obligation, Amount $ 7,029
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Revenue, Remaining Performance Obligation, Amount $ 6,722
Revenue, Remaining Performance Obligation, Percentage 96.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month) 12 months