Note 5 - Property, Plant and Equipment (Tables)

12 Months Ended

Mar. 31, 2023

Notes Tables

Property, Plant and Equipment [Table Text Block]

	As of:
	March 31,			March 31,
	2023			2022
Land and land improvements	$	46,978		$	42,981
Buildings and improvements		214,110			202,444
Machinery and equipment		421,067			403,192
Office furniture, vehicles and computer software		11,738			10,003
Construction in progress		40,539			29,976
Property, plant and equipment, cost		734,432			688,596
Less: accumulated depreciation		(433,220	)		(420,553	)
Property, plant and equipment, net	$	301,212		$	268,043