Marketable Securities - Investments in debt securities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Jun. 30, 2025
Investments in Debt Securities
Credit loss recognized	$ 0	$ 0	$ 0	$ 0
U.S. Treasury Securities
Investments in Debt Securities
Amortized Cost	10,235		10,235		$ 10,058
Unrealized Gains	227		227		185
Aggregate Fair Value	$ 10,462		$ 10,462		$ 10,243