Fair Value Measurements - Summary of Carrying Value and Estimated Fair Value of all Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Carrying Value
Fair value measurement
Long term debt	$ 182,033	$ 173,797
Fair Value
Fair value measurement
Long term debt	200,705	210,024
Non-recurring basis | Carrying Value | Level 2 | 3.75% Convertible Notes Due 2022
Fair value measurement
Long term debt	2,851	2,712
Non-recurring basis | Carrying Value | Level 2 | 3.75% Convertible Notes Due 2026
Fair value measurement
Long term debt	97,344	72,388
Non-recurring basis | Fair Value | Level 2 | 3.75% Convertible Notes Due 2022
Fair value measurement
Long term debt	3,261	3,164
Non-recurring basis | Fair Value | Level 2 | 3.75% Convertible Notes Due 2026
Fair value measurement
Long term debt	115,606	108,163
Term Loan Facility | Non-recurring basis | Carrying Value | Level 2
Fair value measurement
Long term debt	76,838	78,697
Term Loan Facility | Non-recurring basis | Fair Value | Level 2
Fair value measurement
Long term debt	76,838	78,697
Revolving Credit Facility | Non-recurring basis | Carrying Value | Level 2
Fair value measurement
Long term debt	5,000	20,000
Revolving Credit Facility | Non-recurring basis | Fair Value | Level 2
Fair value measurement
Long term debt	$ 5,000	$ 20,000