Note 5 - Assets Held for Rent - Assets Held for Rent (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Shippers placed in service	$ 4,199	$ 3,073
Accumulated deprecation	(569)	(174)
Net	3,630	2,899
Shippers and related components in production	1,328	1,023
Total	$ 4,958	$ 3,922