Debt - Schedule of Carrying Values of All Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Debt
Carrying amount of equity conversion component	$ 14,650	$ 7,844
Principal amount of the Notes	153,007	166,548
Unamortized debt costs	(5,363)	(555)
Unamortized debt discount	(13,323)	(1,422)
Net carrying amount	134,321	164,571
Reported as:
Short-term debt		113,023
Long-term debt	134,321	51,548
Net carrying amount	134,321	164,571
Revolving Credit Facility
Debt
Principal amount of the Notes	28,007	51,548
Net carrying amount	28,007	51,548
Reported as:
Net carrying amount	28,007	51,548
3.75% Convertible Senior Notes due 2022
Debt
Carrying amount of equity conversion component	14,650
Principal amount of the Notes	85,000
Unamortized debt costs	(3,501)
Unamortized debt discount	(12,901)
Net carrying amount	68,598
Reported as:
Net carrying amount	68,598
3.50% Convertible Notes
Debt
Principal amount of the Notes		44,654
Unamortized debt costs		(555)
Net carrying amount		44,099
Reported as:
Net carrying amount		44,099
3.50% Series A Convertible Notes
Debt
Carrying amount of equity conversion component		7,844
Principal amount of the Notes		70,346
Unamortized debt discount		(1,422)
Net carrying amount		68,924
Reported as:
Net carrying amount		$ 68,924
Term Loan Facility due December 2022
Debt
Principal amount of the Notes	40,000
Unamortized debt costs	(1,862)
Unamortized debt discount	(422)
Net carrying amount	37,716
Reported as:
Net carrying amount	$ 37,716