Note 2 - Inventories (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	Jun 30, 2021			Dec 31, 2020
Raw materials	$	1,286,151		$	1,323,655
Work-in-progress		399,738			428,753
Finished goods		1,140,543			1,065,458
Reduction to LIFO cost		(1,218,604	)		(1,172,891	)
Total Inventories	$	1,607,828		$	1,644,975