Note 2 - Revenue Recognition - Transaction Price Allocated to the Remaining Performance Obligations 2 (Details) - Edge to Cloud [Member] $ in Thousands	Mar. 31, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Edge to Cloud	$ 1,044
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Edge to Cloud	454
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Edge to Cloud	$ 0