Note 7 - Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Property, Plant and Equipment [Table Text Block]

	March 31,		December 31,
	2022		2021		Estimated Useful Lives
Land	$	730	$	730
Furniture and fixtures		265		265	5	-	10 years
Plant		10,554		10,457	20	-	40 years, or life of lease
Computer and software		452		452	3	-	5 years
Leasehold improvements		1,828		1,828	4	-	15 years, or life of lease
Machinery and equipment		14,977		15,115	5	-	15 years
Property and equipment, cost		28,806		28,847
Less accumulated depreciation		13,919		13,403
Property and equipment, net	$	14,887	$	15,444