Revenue Recognition - Disaggregated Revenue By Products (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 52,755	$ 77,767	$ 123,200	$ 153,255
Feraheme
Disaggregation of Revenue [Line Items]
Revenues	29,635	42,074	74,068	82,089
Makena
Disaggregation of Revenue [Line Items]
Revenues	22,325	30,593	45,888	61,534
Intrarosa
Disaggregation of Revenue [Line Items]
Revenues	1,216	4,877	4,385	9,291
Other
Disaggregation of Revenue [Line Items]
Revenues	(447)	90	(1,199)	133
Product Revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 52,729	$ 77,634	$ 123,142	$ 153,047