Note 13 - Revenue (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

	Year Ending December 31,
(In thousands)	2021		2022		2023		2024		Total
Rental revenue	$	4,840	$	6,923	$	722	$	-	$	12,485
Service revenue	$	491	$	31	$	31	$	10	$	563