Note 5 - Property, Plant and Equipment (Tables)

9 Months Ended

Dec. 31, 2022

Notes Tables

Property, Plant and Equipment [Table Text Block]

	As of:
	December 31,			January 1,			March 31,
	2022			2022			2022
Land and land improvements	$	46,832		$	42,889		$	42,981
Buildings and improvements		210,991			197,080			202,444
Machinery and equipment		423,901			390,344			403,192
Office furniture, vehicles and computer software		11,397			10,018			10,003
Construction in progress		46,395			33,378			29,976
Property, plant and equipment, cost		739,516			673,709			688,596
Less: accumulated depreciation		(441,840	)		(415,505	)		(420,553	)
Property, plant and equipment, net	$	297,676		$	258,204		$	268,043