Note 5 - Assets Held for Rent - Assets Held for Rent (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Shippers placed in service	$ 4,666	$ 3,073
Accumulated deprecation	(755)	(174)
Net	3,911	2,899
Shippers and related components in production	1,220	1,023
Total	$ 5,131	$ 3,922