Summary of Significant Accounting Policies - Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)
Medical Indication Information
Total net sales	$ 136,110	$ 193,718	$ 263,452	$ 348,772
Number of reportable segments | segment			1
Analgesic
Medical Indication Information
Total net sales	2,111	2,547	$ 3,995	4,376
Anti-Psychosis
Medical Indication Information
Total net sales	22,697	14,036	50,730	24,925
Cardiovascular
Medical Indication Information
Total net sales	23,972	25,680	45,579	47,450
Central Nervous System
Medical Indication Information
Total net sales	19,331	7,373	38,588	21,659
Endocrinology
Medical Indication Information
Total net sales		88,477		142,355
Gastrointestinal
Medical Indication Information
Total net sales	18,313	12,943	35,275	30,537
Infectious Disease
Medical Indication Information
Total net sales	18,078	4,616	29,973	9,096
Migraine
Medical Indication Information
Total net sales	10,878	12,551	20,021	22,288
Respiratory/Allergy/Cough/Cold
Medical Indication Information
Total net sales	3,075	3,388	5,781	6,972
Urinary
Medical Indication Information
Total net sales	1,233	1,596	1,668	3,137
Other
Medical Indication Information
Total net sales	9,934	12,606	19,796	23,411
Contract manufacturing revenue
Medical Indication Information
Total net sales	$ 6,488	$ 7,905	$ 12,046	$ 12,566