Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Chargebacks
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 32,167	$ 10,986	$ 3,007
Current year provision	247,186	208,965	60,469
Credits issued during the year	(256,638)	(187,784)	(52,490)
Balance at end of year	22,715	32,167	10,986
Returns
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	30,692	20,249	8,092
Current year provision	7,618	21,403	17,312
Credits issued during the year	(15,482)	(10,960)	(5,155)
Balance at end of year	22,828	30,692	20,249
Government Reimbursed Rebates
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	938	1,005	502
Current year provision	5,124	4,259	2,503
Credits issued during the year	(4,750)	(4,326)	(2,000)
Balance at end of year	1,312	938	1,005
Other Rebates
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	4,335	3,630	1,545
Current year provision	90,915	36,923	20,811
Credits issued during the year	(88,048)	(36,218)	(18,726)
Balance at end of year	7,202	4,335	3,630
Sales Discounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	2,682	690
Current year provision	10,267	9,381	4,339
Credits issued during the year	(10,526)	(7,389)	(3,649)
Balance at end of year	$ 2,423	$ 2,682	$ 690