Summary of Significant Accounting Policies - Segment Information (Details) $ in Thousands	3 Months Ended												12 Months Ended
	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2016 USD ($) segment	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
Medical Indication Information
Contract manufacturing revenue													$ 22,043
Net sales	$ 168,887	$ 163,712	$ 127,059	$ 106,433									566,091	$ 406,837	$ 273,771
Settlement agreement		(23,598)											(23,598)
Total net sales	$ 168,887	$ 140,114	$ 127,059	$ 106,433	$ 99,276	$ 99,352	$ 114,822	$ 93,387	$ 80,619	$ 79,997	$ 67,326	$ 45,829	$ 542,493	406,837	273,771
Segment information
Number of reportable segments | segment													1
Antibiotic
Medical Indication Information
Total net sales													$ 14,558	12,306	13,572
Cardiovascular
Medical Indication Information
Total net sales													53,541	55,166	62,121
Central Nervous System
Medical Indication Information
Total net sales													36,291
Gallstone
Medical Indication Information
Total net sales													67,348	65,262	6,578
Gastrointestinal
Medical Indication Information
Total net sales													52,699
Glaucoma
Medical Indication Information
Total net sales													25,336	21,145	11,987
Gout
Medical Indication Information
Total net sales													303	6,833	10,822
Migraine
Medical Indication Information
Total net sales													21,776	25,729	14,527
Muscle Relaxant
Medical Indication Information
Total net sales													5,403	8,779
Obesity
Medical Indication Information
Total net sales													3,809	4,004	4,032
Pain Management
Medical Indication Information
Total net sales													29,804	27,461	27,174
Respiratory
Medical Indication Information
Total net sales													9,982
Thyroid Deficiency
Medical Indication Information
Total net sales													162,411	153,460	102,248
Urinary
Medical Indication Information
Total net sales													17,398	212
Other
Medical Indication Information
Total net sales													$ 43,389	$ 26,480	$ 20,710