Note 5 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Property, plant and equipment, gross	$ 306,274	$ 279,925
Less accumulated depreciation	(158,250)	(142,991)
Property, plant and equipment - net	148,024	136,934
Land, Buildings and Leasehold Improvements [Member]
Property, plant and equipment, gross	79,322	77,744
Machinery, Equipment and Other [Member]
Property, plant and equipment, gross	$ 226,952	$ 202,181

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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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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