Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2017

Revenue Recognition

Schedule of chargeback provision analysis

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Beginning balance	$	37,820	$	15,217
Provision related to sales made in the current period		56,945		32,548
Credits issued to third parties		(74,982)		(36,703)
Ending balance	$	19,783	$	11,062

Schedule of product return liability analysis

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Beginning balance	$	3,143	$	2,621
Provision for product returns		1,062		(255)
Credits issued to third parties		(462)		(493)
Ending balance	$	3,743	$	1,873