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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2020
Share-based Payment Arrangement [Abstract] |
Stock-Based Compensation Expense | We recognized total stock-based compensation expense in our Condensed Consolidated Statements of Operations as follows (in thousands):
| Three months ended June 30, |  |  |  | Six months ended June 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Cost of goods sold | $ | 664 |  |  | $ | 1,086 |  |  | $ | 1,424 |  |  | $ | 2,089 |
Research and development | 14,161 |  |  | 15,430 |  |  | 29,614 |  |  | 31,870 |
General and administrative | 8,546 |  |  | 8,006 |  |  | 16,544 |  |  | 15,948 |
Impairment of assets and other costs for terminated program | — |  |  | — |  |  | 1,025 |  |  | — |
Total stock-based compensation | $ | 23,371 |  |  | $ | 24,522 |  |  | $ | 48,607 |  |  | $ | 49,907 |
Share-based Compensation, Activity | We issued stock-based awards and resulting shares of our common stock as follows (shares in thousands):
| Three months ended June 30, |  |  |  | Six months ended June 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Options granted | — |  |  | 95 |  |  | 49 |  |  | 115 |
Weighted-average grant-date fair value of options granted | $ | — |  |  | $ | 17.00 |  |  | $ | 11.88 |  |  | $ | 18.51 |
RSUs granted | 275 |  |  | 263 |  |  | 520 |  |  | 396 |
Weighted-average grant-date fair value of RSUs granted | $ | 21.65 |  |  | $ | 31.76 |  |  | $ | 20.36 |  |  | $ | 34.85 |
Shares issued under equity compensation plans | 947 |  |  | 738 |  |  | 2,305 |  |  | 1,436 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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