Income Taxes - Schedule of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Deferred tax assets
Accruals	$ 871	$ 376
Captive	559	0
Operating loss carryforwards	12,251	10,809
Inventories	1,673	1,761
Investments	0	3,464
Interest	1,933	0
Stock compensation	1,289	0
Research and development tax credit carry forwards, net of uncertain tax position	3,793	4,104
Other	747	619
Deferred tax assets	23,116	21,133
Deferred tax liabilities
Property, plant, and equipment	(29,126)	(26,501)
Prepaid expenses	(626)	(1,266)
Intangible assets	(17,537)	(9,173)
Investments	(2,830)	0
Inventories	(1,530)	0
Change in accounting method	(1,446)	(945)
Deferred tax liabilities	(53,095)	(37,885)
Valuation allowance	0	0
Deferred tax liability, net	$ (29,979)	$ (16,752)