REVENUE RECOGNITION (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Summary of net product revenue

The following table summarizes net product revenues for the three and nine months ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Bile acid products	$	22,912	$	19,938	$	66,766	$	59,258
Tiopronin products	28,227		24,435		80,572		69,393
Total net product revenue	$	51,139	$	44,373	$	147,338	$	128,651