CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2025	Jun. 30, 2024
Accounts receivable, allowance for credit loss	$ 0	$ 0
Accumulated depreciation and amortization	$ 52,813	$ 52,281
Preferred stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	15,000	15,000
Preferred stock, shares outstanding (in shares)	0	0
Treasury stock (in shares)	961	1,025
Class A Common Stock
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	120,000	120,000
Common stock, shares outstanding (in shares)	19,486	19,423
Class B Common Stock
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	30,000	30,000
Common stock, shares outstanding (in shares)	4,530	4,530