Basis of Presentation and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Schedule of customers representing 10% or more of revenues

The following table sets forth customers who represented 10% or more of our total revenues for the three and nine months ended September 30, 2017 and 2016:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
AmerisourceBergen Corporation	22	%	20	%	21	%	22	%
McKesson Corporation	21	%	<10	%	19	%	<10	%
Caremark LLC (Specialty Pharmacy)	—	%	10	%	—	%	10	%

Schedule of customers representing greater than 10% of accounts receivable balances

Customers which represented greater than 10% of our accounts receivable balances as of September 30, 2017 and December 31, 2016 were as follows:



	September 30, 2017		December 31, 2016
AmerisourceBergen Corporation	26	%	13	%
McKesson Corporation	23	%	32	%

Analysis of product sales, allowances and accruals

Our product sales, which primarily represented revenues from Makena and Feraheme for the three and nine months ended September 30, 2017 and 2016, were offset by provisions for allowances and accruals as follows (in thousands):



	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Gross product sales	$	235,299	$	201,303	$	676,377	$	530,076
Provision for product sales allowances and accruals:
Contractual adjustments	80,110		61,504		225,622		161,023
Governmental rebates	30,858		24,022		83,565		60,729
Total	110,968		85,526		309,187		221,752
Product sales, net	$	124,331	$	115,777	$	367,190	$	308,324