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STOCK AWARD PLANS (Tables) | 3 Months Ended
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Mar. 31, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock-based Compensation | A summary of our total compensation expense recognized in our condensed consolidated statements of operations and comprehensive income for stock-based compensation is as follows (in thousands):
|  |  | Three Months Ended March 31,
|  |  |  |  | 2021 |  | 2020
Stock options |  |  |  |  | $ | 3,967 |  |  | $ | 5,013 |
Stock awards |  |  |  |  | 18,948 |  |  | 5,403 |
Company expense on ESPP discount |  |  |  |  | 1,074 |  |  | 981 |
Total stock-based compensation expense |  |  |  |  | $ | 23,989 |  |  | $ | 11,397 |
Schedule Employee Stock Purchase Plan Activity | The following is a summary of the employee stock purchase plan activity (dollars in thousands):
Three Months Ended March 31, 2021
Shares purchased by employees |  | Aggregate cost to employees |  | Expense recognized by the company
75,029 |  |  | $ | 6,086 |  |  | $ | 1,074 |

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