Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2016

Revenue Recognition

Schedule of chargeback provision analysis

	Nine Months Ended
	September 30,
	2016		2015
	(in thousands)
Beginning balance	$	15,217	$	11,872
Provision related to sales made in the current period		105,772		121,714
Credits issued to third parties		(110,073)		(121,914)
Ending balance	$	10,916	$	11,672

Schedule of product return liability analysis

	Nine Months Ended
	September 30,
	2016		2015
	(in thousands)
Beginning balance	$	2,621	$	2,408
Provision for product returns		958		1,971
Credits issued to third parties		(873)		(1,233)
Ending balance	$	2,706	$	3,146