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STOCK-BASED COMPENSATION | 6 Months Ended
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Jun. 30, 2021
Share-based Payment Arrangement [Abstract] |
STOCK-BASED COMPENSATION | STOCK-BASED COMPENSATION The Company has stockholder-approved equity incentive plans that provide for the granting of service-based restricted stock units (RSUs), market-based RSUs, performance-based RSUs, stock options and other types of awards to its employees, officers and non-employee directors. Compensation expense included in the Company’s Condensed Consolidated Statements of Comprehensive Income (Loss) for all stock-based compensation arrangements was as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Cost of sales | $ | 6,087 |  |  | $ | 4,955 |  |  | $ | 12,568 |  |  | $ | 10,039 |
Research and development | 20,816 |  |  | 15,917 |  |  | 38,333 |  |  | 29,628 |
Selling, general and administrative | 27,940 |  |  | 24,090 |  |  | 53,445 |  |  | 52,289 |
Total stock-based compensation expense | $ | 54,843 |  |  | $ | 44,962 |  |  | $ | 104,346 |  |  | $ | 91,956 |

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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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- References No definition available. + Details
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