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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2022
Revenue |
Net revenue initiated sales in the United States of total net revenue | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
(in thousands) |  | 2022 | ​ | 2021 | ​ | 2020
Products | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
UDENYCA | ​ | $ | 203,814 | ​ | $ | 326,509 | ​ | $ | 475,824
CIMERLI | ​ | ​ | 6,946 | ​ | ​ | — | ​ | ​ | —
Total net product revenue | ​ | ​ | 210,760 | ​ | ​ | 326,509 | ​ | ​ | 475,824
Other | ​ |  | 282 | ​ |  | 42 | ​ |  | —
Total net revenue | ​ | $ | 211,042 | ​ | $ | 326,551 | ​ | $ | 475,824
​
Gross Revenues by Significant Customer as a Percentage of Total Gross Revenues | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ | ​ | 2022 | ​ | ​ | 2021 |  | ​ | 2020 |
McKesson Corporation | ​ | 38 | % | ​ | 39 | % | ​ | 38 | %
AmeriSource-Bergen Corporation | ​ | 44 | % | ​ | 39 | % | ​ | 37 | %
Cardinal Health, Inc. | ​ | 17 | % | ​ | 20 | % | ​ | 23 | %
​
Activities and Ending Reserve Balances for Each Significant Category of Discounts and Allowances | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, 2022
​ |  | Chargebacks |  | ​ | ​ |  | Other Fees, |  | ​ | ​
​ | ​ | and Discounts | ​ | ​ | ​ | ​ | Co-pay | ​ | ​ | ​
​ | ​ | for Prompt | ​ | ​ | ​ | ​ | Assistance | ​ | ​ | ​
(in thousands) | ​ | Payment | ​ | Rebates | ​ | and Returns | ​ | Total
Balances at December 31, 2021 | ​ | $ | 29,665 | ​ | $ | 54,004 | ​ | $ | 26,054 | ​ | $ | 109,723
Provision related to sales made in: | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Current period | ​ | ​ | 436,865 | ​ | ​ | 68,399 | ​ | ​ | 73,435 | ​ | ​ | 578,699
Prior period | ​ | ​ | (2,090) | ​ | ​ | (1,050) | ​ | ​ | 32 | ​ | ​ | (3,108)
Payments and customer credits issued | ​ |  | (421,763) | ​ | ​ | (82,640) | ​ | ​ | (80,408) | ​ | ​ | (584,811)
Balances at December 31, 2022 | ​ | $ | 42,677 | ​ | $ | 38,713 | ​ | $ | 19,113 | ​ | $ | 100,503
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, 2021
​ |  | Chargebacks |  | ​ | ​ |  | Other Fees, |  | ​ | ​
​ | ​ | and Discounts | ​ | ​ | ​ | ​ | Co-pay | ​ | ​ | ​
​ | ​ | for Prompt | ​ | ​ | ​ | ​ | Assistance | ​ | ​ | ​
(in thousands) | ​ | Payment | ​ | Rebates | ​ | and Returns | ​ | Total
Balances at December 31, 2020 | ​ | $ | 40,580 | ​ | $ | 54,058 | ​ | $ | 28,760 | ​ | $ | 123,398
Provision related to sales made in: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Current period | ​ |  | 470,791 | ​ | ​ | 113,705 | ​ | ​ | 94,703 | ​ | ​ | 679,199
Prior period | ​ | ​ | (2,876) | ​ | ​ | (4,976) | ​ | ​ | (3,555) | ​ | ​ | (11,407)
Payments and customer credits issued | ​ |  | (478,830) | ​ |  | (108,783) | ​ |  | (93,854) | ​ |  | (681,467)
Balances at December 31, 2021 | ​ | $ | 29,665 | ​ | $ | 54,004 | ​ | $ | 26,054 | ​ | $ | 109,723
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, 2020
Balances at December 31, 2019 | ​ | $ | 35,159 | ​ | $ | 27,494 | ​ | $ | 24,494 | ​ | $ | 87,147
Provision related to sales made in: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Current period | ​ |  | 462,328 | ​ | ​ | 115,864 | ​ | ​ | 114,372 | ​ | ​ | 692,564
Prior period | ​ | ​ | (1,336) | ​ | ​ | (3,438) | ​ | ​ | (6,288) | ​ | ​ | (11,062)
Payments and customer credits issued | ​ |  | (455,571) | ​ |  | (85,862) | ​ |  | (103,818) | ​ |  | (645,251)
Balances at December 31, 2020 | ​ | $ | 40,580 | ​ | $ | 54,058 | ​ | $ | 28,760 | ​ | $ | 123,398
​

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