Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Property, Plant, and Equipment, Useful Life [Table Text Block]

	(in years)
Building	25	-	30
Machinery and equipment	3	-	15
Projects that prolong the life and increase efficiency of machinery	3	-	5
Light Machinery	5	-	10
Heavy Machinery	10	-	15
Office furniture and equipment	5	-	8
Intellectual Property	9	-	15
Leasehold improvements	5	-	8
Furniture and equipment at customer locations	1	-	3