401(k) Plan (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
401(k) Plan
Deferred compensation plan expense	$ 32,000	$ 33,000	$ 100,000	$ 98,000