Note 13 - Revenue - Summary of Remaining Performance Obligations 2 (Details) $ in Thousands	Mar. 31, 2022 USD ($)
Rental Revenue [Member]
Service revenue, expected to be recognized in the future	$ 11,703
Rental Revenue [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Service revenue, expected to be recognized in the future	$ 7,068
Service revenue, expected to be recognized in the future, period (Year)	9 months
Rental Revenue [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Service revenue, expected to be recognized in the future	$ 3,735
Service revenue, expected to be recognized in the future, period (Year)	1 year
Rental Revenue [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Service revenue, expected to be recognized in the future	$ 900
Service revenue, expected to be recognized in the future, period (Year)	1 year
Service Revenue [Member]
Service revenue, expected to be recognized in the future	$ 205
Service Revenue [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Service revenue, expected to be recognized in the future	$ 79
Service revenue, expected to be recognized in the future, period (Year)	9 months
Service Revenue [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Service revenue, expected to be recognized in the future	$ 116
Service revenue, expected to be recognized in the future, period (Year)	1 year
Service Revenue [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Service revenue, expected to be recognized in the future	$ 10
Service revenue, expected to be recognized in the future, period (Year)	1 year