Note 2 - Inventories (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	Sep 30, 2020			Dec 31, 2019
Raw materials	$	1,477,132		$	1,667,154
Work-in-progress		449,592			419,906
Finished goods		1,517,561			1,449,854
Reduction to LIFO cost		(1,288,472	)		(1,356,378	)
Total Inventories	$	2,155,813		$	2,180,536