Note 2 - Revenue Recognition - Transaction Price Allocated to the Remaining Performance Obligations (Details) (Parentheticals)	Jun. 30, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01 | Partner Solutions [Member]
Remaining performance obligations, period (Year)	182 days
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01 | Edge to Cloud [Member]
Remaining performance obligations, period (Year)	182 days
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Partner Solutions [Member]
Remaining performance obligations, period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Edge to Cloud [Member]
Remaining performance obligations, period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Partner Solutions [Member]
Remaining performance obligations, period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Edge to Cloud [Member]
Remaining performance obligations, period (Year)	1 year