Net Product Revenue (Tables)

3 Months Ended

Mar. 31, 2020

Revenue From Contract With Customer [Abstract]

Summary of Balances and Activity in Each of Product Revenue Allowance and Reserve Categories

The following table summarizes balances and activity in each of our product revenue allowance and reserve categories for the three months ended March 31, 2020 and 2019 (in thousands):

	Chargebacks, discounts and fees			Government and other rebates			Returns		Total
Balance at December 31, 2018	$	50		$	293		$	5	$	348
Provision related to current period sales		155			375			52		582
Adjustment related to prior period sales		—			(30	)		—		(30	)
Credits or payments made during the period		(104	)		—			—		(104	)
Balance at March 31, 2019	$	101		$	638		$	57	$	796
Balance at December 31, 2019	$	270		$	1,353		$	197	$	1,820
Provision related to current period sales		470			1,621			58		2,149
Adjustment related to prior period sales		(66	)		69			—		3
Credits or payments made during the period		(498	)		(554	)		—		(1,052	)
Balance at March 31, 2020	$	176		$	2,489		$	255	$	2,920

Summary of Balance of Receivables and Contract Liabilities Related to Net Product Revenue

The following table presents the balance of our receivables and contract liabilities related to net product revenue (in thousands):

	March 31, 2020		December 31, 2019
Receivables included in "Accounts receivable"	$	10,330	$	6,946
Contract liabilities included in "Accrued liabilities"		2,645		1,550