Product Revenue (Tables)

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Schedule of Product Revenue Allowance and Reserves

The following table summarizes balances and activity in each of the product revenue allowance and reserve categories for the nine months ended September 30, 2019 (in thousands):

	Contractual Adjustments		Government Rebates		Returns		Total
Balance at December 31, 2018	$	592	$	325	$	334	$	1,251
Current provisions relating to sales in the current year	5,596		1,402		1,003		8,001
Adjustments relating to prior years	8		(48)		—		(40)
Payments/returns relating to sales in the current year	(4,583)		(714)		—		(5,297)
Payments/returns relating to sales in the prior years	(598)		(261)		—		(859)
Balance at September 30, 2019	$	1,015	$	704	$	1,337	$	3,056

Schedule of Revenue Related Reserves

Total revenue-related reserves above, included in our condensed consolidated balance sheets, are summarized as follows (in thousands):

	September 30, 2019		December 31, 2018
Reduction of accounts receivable	$	549	$	326
Component of accrued expenses	2,507		925
Total revenue-related reserves	$	3,056	$	1,251

Schedule of Changes in Contract Assets and Liabilities, Product Revenue

The following table presents changes in our contract assets during the nine months ended September 30, 2019 (in thousands):

	December 31, 2018		Additions		Deductions		September 30, 2019
Contract assets (1)
Accounts receivable, net	$	5,076	$	48,219	$	(46,189)	$	7,106

(1) Additions to contract assets relate to amounts billed to Customers for product sales during the reporting period. Deductions to contract assets primarily relate to collection of receivables during the reporting period.