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Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

Revenue From Contract With Customer [Abstract]

Summarize Activity of the Net Product Revenue Allowance and Reserve Categories

The following table summarizes activity in each of the net product revenue allowance and reserve categories described above for the years ended December 31, 2019 and 2018:

In thousands		Trade Allowances				Rebates, Chargebacks and Discounts				Product Returns				Other Incentives				Total
Balance as of January 1, 2018		$	12,035			$	32,064			$	1,887			$	2,107			$	48,093
Provision related to current period sales			46,002				190,329				1,211				20,732				258,274
Provision related to prior period sales			—				(1,845	)			—				(69	)			(1,914	)
Credits/payments made for current period sales			(29,202	)			(148,857	)			—				(19,307	)			(197,366	)
Credits/payments made for prior period sales			(9,340	)			(30,057	)			(150	)			(2,296	)			(41,843	)
Balance as of December 31, 2018			19,495				41,634				2,948				1,167				65,244
Provision related to current period sales			92,378				403,865				2,430				47,169				545,842
Provision related to prior period sales			—				(324	)			—				—				(324	)
Credits/payments made for current period sales			(63,288	)			(312,790	)			5				(43,416	)			(419,489	)
Credits/payments made for prior period sales			(19,324	)			(41,388	)			(804	)			(1,200	)			(62,716	)
Balance as of December 31, 2019		$	29,261			$	90,997			$	4,579			$	3,720			$	128,557