Fair Value Measurements - Summary of Carrying Value and Estimated Fair Value of all Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Carrying Value
Fair value measurement
Long term debt	$ 188,460	$ 159,844
Fair Value
Fair value measurement
Long term debt	189,935	171,341
Non-recurring basis | Carrying Value | Level 2 | 3.75% Convertible Notes
Fair value measurement
Long term debt	73,623	72,730
Non-recurring basis | Fair Value | Level 2 | 3.75% Convertible Notes
Fair value measurement
Long term debt	75,098	84,227
Term loan | Non-recurring basis | Carrying Value | Level 2
Fair value measurement
Long term debt	83,632	58,849
Term loan | Non-recurring basis | Fair Value | Level 2
Fair value measurement
Long term debt	83,632	58,849
Revolving Credit Facility | Non-recurring basis | Carrying Value | Level 2
Fair value measurement
Long term debt	31,205	28,265
Revolving Credit Facility | Non-recurring basis | Fair Value | Level 2
Fair value measurement
Long term debt	$ 31,205	$ 28,265