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Revenue Recognition (Tables) | 6 Months Ended
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Jun. 30, 2021
Revenue From Contract With Customer [Abstract] |
Summarize Activity of the Net Product Revenue Allowance and Reserve Categories | The following tables summarize activity in each of the net product revenue allowance and reserve categories described above for the six months ended June 30, 2021 and 2020:
In thousands |  | Trade Allowances |  |  | Rebates, Chargebacks and Discounts |  |  | Product Returns |  |  | Other Incentives |  |  | Total |
Balance as of December 31, 2020 |  | $ | 36,242 |  |  | $ | 141,201 |  |  | $ | 7,797 |  |  | $ | 5,587 |  |  | $ | 190,827 |
Provision related to current period sales |  |  | 60,487 |  |  |  | 321,400 |  |  |  | 1,750 |  |  |  | 26,129 |  |  |  | 409,766 |
Provision related to prior period sales |  |  | — |  |  |  | (854 | ) |  |  | — |  |  |  | — |  |  |  | (854 | )
Credits/payments made for current period sales |  |  | (19,874 | ) |  |  | (170,389 | ) |  |  | — |  |  |  | (22,544 | ) |  |  | (212,807 | )
Credits/payments made for prior period sales |  |  | (34,511 | ) |  |  | (127,379 | ) |  |  | (763 | ) |  |  | (5,589 | ) |  |  | (168,242 | )
Balance as of June 30, 2021 |  | $ | 42,344 |  |  | $ | 163,979 |  |  | $ | 8,784 |  |  | $ | 3,583 |  |  | $ | 218,690 |
In thousands |  | Trade Allowances |  |  | Rebates, Chargebacks and Discounts |  |  | Product Returns |  |  | Other Incentives |  |  | Total |
Balance as of December 31, 2019 |  | $ | 29,261 |  |  | $ | 90,997 |  |  | $ | 4,579 |  |  | $ | 3,720 |  |  | $ | 128,557 |
Provision related to current period sales |  |  | 59,829 |  |  |  | 266,823 |  |  |  | 1,589 |  |  |  | 33,743 |  |  |  | 361,984 |
Provision related to prior period sales |  |  | — |  |  |  | (3,872 | ) |  |  | — |  |  |  | — |  |  |  | (3,872 | )
Credits/payments made for current period sales |  |  | (23,197 | ) |  |  | (152,965 | ) |  |  | — |  |  |  | (29,897 | ) |  |  | (206,059 | )
Credits/payments made for prior period sales |  |  | (29,067 | ) |  |  | (85,622 | ) |  |  | (191 | ) |  |  | (3,721 | ) |  |  | (118,601 | )
Balance as of June 30, 2020 |  | $ | 36,826 |  |  | $ | 115,361 |  |  | $ | 5,977 |  |  | $ | 3,845 |  |  | $ | 162,009 |

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