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Certain Balance Sheet Accounts - Contract Royalty Asset and Accounts Receivable, Net (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Certain Balance Sheet Accounts |  |
Short-term contract royalty asset | $ 43,794 | $ 44,319
Long-term contract royalty asset | 126,812 | 140,251
Total OMIDRIA contract royalty asset | 170,606 | 184,570
Royalty and trade receivables, net | 13,669 | 36,505
Sublease and other receivables | 810 | 1,650
Total receivables, net | $ 14,479 | 38,155
Chargeback and product return allowances |  | $ 2,000

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