Revenue Recognition - Disaggregated Revenue By Products (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 93,106	$ 83,808	$ 210,637	$ 237,062
Feraheme
Disaggregation of Revenue [Line Items]
Revenues	46,718	44,205	120,786	126,294
Makena
Disaggregation of Revenue [Line Items]
Revenues	25,860	33,949	66,079	95,483
Intrarosa
Disaggregation of Revenue [Line Items]
Revenues	37	5,607	4,423	14,898
Other
Disaggregation of Revenue [Line Items]
Revenues	614	23	(586)	156
Product Revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 73,229	$ 83,784	$ 190,702	$ 236,831