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

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

AMAG PHARMACEUTICALS, INC. 10-Q