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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock-Based Compensation | 4. Stock-Based Compensation The following table summarizes the total stock-based compensation expense included in the Company’s statements of operations for the periods presented (in thousands):
|  | Three Months Ended March 31, |
|  | 2020 |  |  | 2019 |
Cost of product sales |  | $ | 849 |  |  | $ | 995 |
Research and development |  |  | 8,457 |  |  |  | 7,880 |
Selling, general and administrative |  |  | 13,042 |  |  |  | 11,008 |
|  | $ | 22,348 |  |  | $ | 19,883 |

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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