Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Significant Accounting Policies

Schedule of customers that represent more than 10% total revenue

	Percent of Net Product Sales			Percent of Accounts Receivable, net
Customer A		30	%		46	%
Customer B		30	%		22	%
Customer C		37	%		28	%
		97	%		96	%

Schedule of useful lives used to compute depreciation and amortization

Computer equipment	3 years
Software	3 years
Lab equipment and furniture	5 - 10 years
Leasehold improvements	Shorter of lease term or useful life