Equity Incentive Plan - Deferred Stock Units ("DSU") (Details) - Deferred Stock Units - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Shares
Nonvested at the beginning of the period (in shares)			99,535
Granted (in shares)			12,924
Nonvested at the end of the period (in shares)	112,459		112,459
Weighted-Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)			$ 27.38
Granted (in dollars per share)			59.49
Nonvested at the end of the period (in dollars per share)	$ 31.06		$ 31.06
Unrecognized compensation	$ 0.7		$ 0.7
Weighted average period for recognition of total unrecognized compensation expense related to unvested stock options granted			10 months 24 days
Stock based compensation expense	$ 0.2	$ 0.1	$ 0.5	$ 0.2