Segment Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Revenue by Major Customers

The following table summarizes revenues from each of our customers who individually accounted for 10% or more of our total revenues (as a percentage of total revenues):

	Year Ended December 31,
	2018		2017		2016
AmerisourceBergen Corp.	20	%	20	%	18	%
Cardinal Health, Inc.	21	%	19	%	16	%
McKesson Corp.	21	%	23	%	22	%