Note 12 - Inventories (Tables)

12 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	2020		2019
	(In thousands)
Finished products	$	351,251	$	454,920
In process		31,173		42,045
Raw materials and supplies		173,474		166,060
		555,898		663,025
Less excess of FIFO cost over LIFO cost		144,267		161,341
Total inventories	$	411,631	$	501,684