401(k) Retirement Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Defined Contribution Plan Disclosure [Line Items]
Retirement plan expenses	$ 416	$ 391	$ 1,300	$ 1,100
Vesting period			5 years
Maximum
Defined Contribution Plan Disclosure [Line Items]
Matching contribution (in percent)			4.00%