Debt - Schedule of Carrying Values of All Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Debt
Carrying amount of equity conversion component	$ 14,650	$ 14,650
Principal amount of the Notes	145,422	148,685
Unamortized debt costs	(4,771)	(5,072)
Unamortized debt discount	(11,725)	(12,536)
Net carrying amount	128,926	131,077
Reported as:
Long-term debt	128,926	131,077
Net carrying amount	128,926	131,077
Long-term debt	128,926	131,077
Revolving Credit Facility
Debt
Principal amount of the Notes	20,422	23,685
Net carrying amount	20,422	23,685
Reported as:
Net carrying amount	20,422	23,685
3.75% Convertible Senior Notes due 2022
Debt
Carrying amount of equity conversion component	14,650	14,650
Principal amount of the Notes	85,000	85,000
Unamortized debt costs	(3,192)	(3,351)
Unamortized debt discount	(11,611)	(12,267)
Net carrying amount	70,197	69,382
Reported as:
Net carrying amount	70,197	69,382
Term Loan Facility due December 2022
Debt
Principal amount of the Notes	40,000	40,000
Unamortized debt costs	(1,579)	(1,721)
Unamortized debt discount	(114)	(269)
Net carrying amount	38,307	38,010
Reported as:
Net carrying amount	$ 38,307	$ 38,010