Debt - Summary of Interest Expense on Notes and Credit Facilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Interest expense related to contractual interest coupon	$ 3,296	$ 2,305	$ 6,158	$ 4,630
Interest expense related to amortization of debt discount	1,053	815	2,017	1,625
Interest expense related to amortization of debt issuance costs	332	383	663	765
Total interest expense recognized	$ 4,681	$ 3,503	$ 8,838	$ 7,020