Note 7 - Assets Held for Rent - Assets Held for Rent (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Shippers placed in service	$ 7,671	$ 5,645
Fixed assets held for rent	4,686	4,040
Accumulated depreciation	(4,952)	(2,272)
Net	7,405	7,413
Shippers and related components in production	1,659	2,396
Total	$ 9,064	$ 9,809