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Stock Compensation (Tables) | 6 Months Ended
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Jun. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Valuation Assumptions Used for Valuation of Fair Value of Stock Compensation Granted | We utilized the Black-Scholes valuation model for estimating the fair value of the stock compensation granted, with the following weighted-average assumptions:
| Employee Stock Options |  | Employee Stock Purchase Plan
| For the Three Months Ended |  | For the Six Months Ended |  | For the Three Months Ended |  | For the Six Months Ended
| June 30, |  | June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024 |  | 2025 |  | 2024 |  | 2025 |  | 2024
Average risk-free interest rates | 3.89 | % |  | 4.36 | % |  | 4.24 | % |  | 4.13 | % |  | 4.29 | % |  | 5.33 | % |  | 4.22 | % |  | 5.41 | %
Average expected life (in years) | 5.46 |  | 5.84 |  | 4.89 |  | 4.91 |  | 0.50 |  | 0.50 |  | 0.50 |  | 0.50
Volatility | 31 | % |  | 25 | % |  | 29 | % |  | 30 | % |  | 32 | % |  | 28 | % |  | 37 | % |  | 22 | %
Weighted-average fair value (in dollars) | $ | 25.04 |  |  | $ | 20.18 |  |  | $ | 23.35 |  |  | $ | 20.59 |  |  | $ | 12.63 |  |  | $ | 10.45 |  |  | $ | 14.49 |  |  | $ | 10.54 |
Schedule of Option Activity Under the 2010 Stock Plan | Option activity under our 2010 Stock Plan and 2024 Inducement Plan was as follows:
| Shares Subject to Outstanding Options
| Shares |  | Weighted Average Exercise Price
Balance at December 31, 2024 | 12,777,974 |  | $ | 83.45 |
Options granted | 739,167 |  | $ | 71.43 |
Options exercised | (65,963) |  | $ | 63.41 |
Options cancelled | (403,571) |  | $ | 88.42 |
Balance at June 30, 2025 | 13,047,607 |  | $ | 82.71 |
Schedule of RSU Award and PSU Activity Under the 2010 Stock Plan | RSU and PSU award activity under the 2010 Stock Plan and 2024 Inducement Plan was as follows:
| Shares Subject to Outstanding Awards
| Shares |  | Grant Date Value
Balance at December 31, 2024 | 8,656,803 |  | $ | 67.81 |
RSUs granted | 513,198 |  | $ | 70.10 |
PSUs granted | 18,050 |  | $ | 70.81 |
Additional PSUs earned | 32,148 |  | $ | 70.45 |
RSUs released | (508,059) |  | $ | 81.13 |
RSUs cancelled | (169,673) |  | $ | 66.64 |
Balance at June 30, 2025 | 8,542,467 |  | $ | 67.67 |
Schedule of Shares Available for Grant | The following table summarizes our shares available for grant under the 2010 Stock Plan and 2024 Inducement Plan. Previously, each RSU and PSU grant reduced the available share pool by 2 shares. In June 2025, our stockholders approved an amendment to the 2010 Stock Plan to remove the fungible ratio, and all awards granted under the 2010 Stock Plan after June 10, 2025, the date of our latest annual meeting, will reduce the share reserve on a one-for-one basis. If awards granted under the 2010 Stock Plan on or prior to June 10, 2025 expire, become unexercisable or are forfeited or repurchased after that date, the shares that were subject to those awards will become available for future grant only on a one-for-one basis, even if the original award was a full value award that reduced the share reserve on a two-for-one basis. The 2024 Inducement Plan was amended in June 2025 to remove the provision that stated that any shares issued in connection with awards other than options and stock appreciation rights will be counted against the authorized share limitation as 2.0 shares for every one share so issued and, as a result, all awards granted under the 2024 Inducement Plan will reduce the share reserve thereunder on a one for one basis.
| Shares Available for Grant
Balance at December 31, 2024 | 4,013,611
Additional authorization - 2010 Stock Plan | 8,500,000
Options, RSUs and PSUs granted and issuance of shares for services rendered | (1,767,811)
Options, RSUs and PSUs cancelled | 733,814
Fungible ratio change adjustments | 282,731
Balance at June 30, 2025 | 11,762,345

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock options plan and employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References No definition available. + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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