Product Revenue Reserves and Allowances (Tables)

6 Months Ended

Jun. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of product revenue allowance and reserve categories

The following table summarizes activity in each of the product revenue allowance and reserve categories for the six months ended June 30, 2019 and 2018 (in thousands):

	Chargebacks, Discounts, and Fees			Government and other rebates			Returns			Total
Ending balance at December 31, 2017	$	1,986		$	1,231		$	421		$	3,638
Provision related to sales in the current year	5,799			8,680			221			14,700
Adjustments related to prior period sales	55			(160		)	(111		)	(216		)
Credits and payments made	(5,002		)	(4,528		)	(196		)	(9,726		)
Ending balance at June 30, 2018	$	2,838		$	5,223		$	335		$	8,396
Ending balance at December 31, 2018	$	3,198		$	7,620		$	411		$	11,229
Provision related to sales in the current year	13,034			30,294			493			43,821
Adjustments related to prior period sales	(16		)	(183		)	(141		)	(340		)
Credits and payments made	(11,971		)	(23,690		)	(268		)	(35,929		)
Ending balance at June 30, 2019	$	4,245		$	14,041		$	495		$	18,781