Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2016

Revenue Recognition

Schedule of chargeback provision analysis

	Three Months Ended
	March 31,
	2016		2015
	(in thousands)
Beginning balance	$	15,217	$	11,872
Provision related to sales made in the current period		32,548		42,372
Credits issued to third parties		(36,703)		(42,909)
Ending balance	$	11,062	$	11,335

Schedule of product return liability analysis

	Three Months Ended
	March 31,
	2016		2015
	(in thousands)
Beginning balance	$	2,621	$	2,408
Provision for product returns		(255)		803
Credits issued to third parties		(493)		(630)
Ending balance	$	1,873	$	2,581