Segment Information (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Schedule of Net Product Sales from External Customers

The following table summarizes total net revenues from external customers by product and by geographic region, based on the location of the customer, for the three months ended September 30, 2018 and 2017.

	Three Months Ended September 30,
	2018										2017
	U.S.		Japan		Brazil		Other Foreign Countries		Total		U.S.		Japan		Brazil		Other Foreign Countries		Total
	(in thousands)										(in thousands)
Lomitapide	$	8,128	$	2,757	$	—	$	3,365	$	14,250	$	10,304	$	1,718	$	—	$	3,170	$	15,192
Metreleptin	12,293		91		706		2,994		16,084		11,311		24		96		2,046		13,477
Total	$	20,421	$	2,848	$	706	$	6,359	$	30,334	$	21,615	$	1,742	$	96	$	5,216	$	28,669

The following table summarizes total net revenues from external customers by product and by geographic region, based on the location of the customer, for the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018										2017
	U.S.		Japan		Brazil		Other Foreign Countries		Total		U.S.		Japan		Brazil		Other Foreign Countries		Total
	(in thousands)										(in thousands)
Lomitapide	$	27,228	$	7,560	$	—	$	9,098	$	43,886	$	32,236	$	3,531	$	5,939	$	10,224	$	51,930
Metreleptin	34,542		139		1,876		9,279		45,836		37,652		71		5,082		4,795		47,600
Total	$	61,770	$	7,699	$	1,876	$	18,377	$	89,722	$	69,888	$	3,602	$	11,021	$	15,019	$	99,530