Inventories - inventory reserves (Details) - Inventory obsolescence and net realizable value reserve (deducted from Inventory) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 2,834	$ 2,913	$ 2,289
Charged to costs and expenses	1,187		624
(recoveries)		(79)
Balance at end of period	$ 4,021	$ 2,834	$ 2,913