Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Deferred tax assets:
Federal, state, and foreign net operating loss carryovers	$ 292	$ 271
Stock option compensation	232	444
Accrued vacation, allowance for returns, bonuses & other	3,923	2,104
Gross deferred tax asset	4,447	2,819
Deferred tax liabilities:
Patents and trademarks	(78)	(99)
Property & equipment	(1,996)	(1,250)
Other	(409)	(189)
Gross deferred tax liabilities	(2,483)	(1,538)
Less: valuation allowance	(675)	(73)
Deferred tax assets, net	$ 1,289	$ 1,208