Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Non-cancelable Operating Lease Agreements and Long-term Principal and Interest on Convertible Notes (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Future minimum lease payments under non-cancelable operating lease agreements
2019	$ 9,401
2020	9,564
2021	8,496
2022	8,447
2023	8,554
Thereafter	8,436
Total	52,898
Long-term principal and interest on Convertible Notes
2019	8,639	[1]
2020	8,523	[1]
2021	7,570	[1]
2022	6,455	[1]
2023	151,542	[1]
Total	$ 182,729	[1]

[1] These amounts represent principal and interest cash payments over the contractual life of the debt obligations, including anticipated interest payments that are not recorded on the Company’s consolidated balance sheet. Any conversion, premium, redemption or purchase of the 3.75% Convertible Notes would impact cash payments noted in the preceding table.