Product Revenue and Reserves for Variable Consideration (Tables)

3 Months Ended

Mar. 31, 2019

Revenue From Contract With Customer [Abstract]

Summary of Product Revenue Allowance and Reserve Categories

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

	Chargebacks and Discounts			Rebates, Fees and other Deductions			Returns			Total
Balance at December 31, 2018	$	516		$	22,861		$	360		$	23,737
Current provisions related to sales in current year		1,486			17,476			870			19,832
Adjustments related to prior period sales		—			156			—			156
Credits/payments made relating to sales in current year		(980	)		(4,249	)		—			(5,229	)
Credits/payments made relating to prior period sales		(515	)		(13,052	)		(947	)		(14,514	)
Balance at March 31, 2019	$	507		$	23,192		$	283		$	23,982