Product Revenue, Net (Tables)

9 Months Ended

Sep. 30, 2019

Product Revenue, Net [Abstract]

Product Revenues

The table below summarizes consolidated product revenue, net by region:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
	(in thousands)				(in thousands)
Product revenue, net:
U.S.	$	45,232	$	36,684	$	133,914	$	99,697
ex-U.S.		16,313		9,897		45,372		25,211
Total product revenue, net	$	61,545	$	46,581	$	179,286	$	124,908