Summary of Significant Accounting Policies - Segment Information (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)
Medical Indication Information
Total net sales	$ 126,479	$ 127,342
Number of reportable segments | segment	1
Analgesic
Medical Indication Information
Total net sales	$ 3,120	1,884
Anti-Psychosis
Medical Indication Information
Total net sales	13,028	28,034
Cardiovascular
Medical Indication Information
Total net sales	19,714	21,606
Central Nervous System
Medical Indication Information
Total net sales	22,525	19,257
Endocrinology
Medical Indication Information
Total net sales	3,233
Gastrointestinal
Medical Indication Information
Total net sales	17,100	16,962
Infectious Disease
Medical Indication Information
Total net sales	21,932	11,895
Migraine
Medical Indication Information
Total net sales	9,690	9,143
Respiratory/Allergy/Cough/Cold
Medical Indication Information
Total net sales	1,426	2,707
Urinary
Medical Indication Information
Total net sales	1,458	435
Other
Medical Indication Information
Total net sales	7,634	9,861
Contract manufacturing revenue
Medical Indication Information
Total net sales	$ 5,619	$ 5,558