Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Deferred tax assets:
Employee related accruals	$ 6,620	$ 5,461
Inventory	1,521	2,864
Environmental remediation	767	1,733
Net operating loss carry forwards-domestic	777	839
Net operating loss carry forwards-foreign	3,813	4,389
Operating lease liabilities	6,788	6,521
R&D cost capitalization	7,227	4,283
Unrealized foreign exchange	1,470
Carried foreign interest expense	4,518
Other	7,224	(1,311)
Deferred tax assets, gross	40,725	24,779
Valuation allowance	(1,288)	(2,598)	$ (2,618)	$ (3,709)
Deferred tax assets, net of valuation allowance	39,437	22,181
Deferred tax liabilities:
Property, plant and equipment and intangible assets	(5,282)	(6,286)
Operating lease ROU assets	(6,441)	(6,280)
Unrealized foreign exchange		(1,906)
Non-U.S. withholding and related taxes, net, on planned repatriation	(2,828)
Other	(6,182)	(712)
Total	(20,733)	(15,184)
Net deferred tax asset	$ 18,704	$ 6,997