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Debt - Summary of interest expense on all Credit Facilities and Convertible Notes (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Debt Disclosure [Abstract]      
Interest expense related to contractual interest coupon $ 12,373 $ 10,185 $ 9,953
Interest expense related to amortization of debt discount 4,168 3,370 3,377
Interest expense related to amortization of debt issuance costs 1,350 1,529 1,629
Total $ 17,891 $ 15,084 $ 14,959