401(k) Retirement Plan (Details) - USD ($)	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Defined Contribution Plan Disclosure [Line Items]
Retirement plan expenses	$ 490,000	$ 457,000
Vesting period	5 years
Maximum
Defined Contribution Plan Disclosure [Line Items]
Matching contributions of eligible compensation	4.00%