Note 3 - Supplemental Balance Sheet and Cash Flow Information - Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Property and equipment, cost	$ 397,756	$ 346,650
Accumulated depreciation and amortization	(189,849)	(169,821)
Property and equipment, net	207,907	176,829
Land [Member]
Property and equipment, cost	8,612	8,516
Building and Building Improvements [Member]
Property and equipment, cost	190,661	184,430
Machinery and Equipment [Member]
Property and equipment, cost	$ 198,483	$ 153,704

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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