Note 4 - Inventories (Tables)

12 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	As of:
	March 31,		March 31,
	2022		2021
Finished products	$	385,681	$	317,654
In process		23,652		25,175
Raw materials and supplies		165,491		128,987
		574,824		471,816
Less excess of FIFO cost over LIFO cost		164,493		128,672
Total inventories	$	410,331	$	343,144