Fair Value Measurements - Summary of Carrying Value and Estimated Fair Value of all Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Carrying Value
Fair value measurement
Long term debt	$ 183,864	$ 159,844
Fair Value
Fair value measurement
Long term debt	185,171	171,341
Non-recurring basis | Carrying Value | Level 2 | 3.75% Convertible Notes
Fair value measurement
Long term debt	74,522	72,730
Non-recurring basis | Fair Value | Level 2 | 3.75% Convertible Notes
Fair value measurement
Long term debt	75,829	84,227
Term loan | Non-recurring basis | Carrying Value | Level 2
Fair value measurement
Long term debt	84,060	58,849
Term loan | Non-recurring basis | Fair Value | Level 2
Fair value measurement
Long term debt	84,060	58,849
Revolving Credit Facility | Non-recurring basis | Carrying Value | Level 2
Fair value measurement
Long term debt	25,282	28,265
Revolving Credit Facility | Non-recurring basis | Fair Value | Level 2
Fair value measurement
Long term debt	$ 25,282	$ 28,265