Summary of Significant Accounting Policies - Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($) segment	Mar. 31, 2015 USD ($)
Medical Indication Information
Contract manufacturing revenue	$ 10,111		$ 12,382
Net sales	163,712	$ 99,352	397,204	$ 307,561
Settlement agreement	(23,598)		(23,598)
Total net sales	140,114	99,352	$ 373,606	307,561
Segment information
Number of reportable segments | segment			1
Antibiotic
Medical Indication Information
Net sales	3,160	3,005	$ 8,716	9,355
Cardiovascular
Medical Indication Information
Net sales	16,652	8,457	38,059	45,729
Central Nervous System
Medical Indication Information
Net sales	14,264		20,351
Gallstone
Medical Indication Information
Net sales	14,698	20,489	53,389	48,969
Gastrointestinal
Medical Indication Information
Net sales	21,739		30,431
Glaucoma
Medical Indication Information
Net sales	6,006	5,714	19,371	15,921
Gout
Medical Indication Information
Net sales	59	1,453	206	6,743
Migraine
Medical Indication Information
Net sales	5,090	6,722	16,338	19,455
Muscle Relaxant
Medical Indication Information
Net sales	1,193	3,738	4,246	6,377
Obesity
Medical Indication Information
Net sales	1,023	1,084	2,853	2,952
Pain Management
Medical Indication Information
Net sales	7,178	4,286	23,386	18,508
Respiratory
Medical Indication Information
Net sales	5,308		6,703
Thyroid Deficiency
Medical Indication Information
Net sales	38,009	36,720	116,543	114,601
Urinary
Medical Indication Information
Net sales	6,506		10,148
Other
Medical Indication Information
Net sales	$ 12,716	$ 7,684	$ 34,082	$ 18,951