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Significant Accounting Policies, Convertible Debt (Details) | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021
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0 Percent Convertible Senior Notes [Member] |  |  |
Convertible Debt [Abstract] |  |  |
Interest rate on convertible senior notes | 0.00% | 0.00% |
Effective interest rate | 0.50% |  |
0.125 Percent Convertible Senior Notes [Member] |  |  |
Convertible Debt [Abstract] |  |  |
Interest rate on convertible senior notes | 0.125% | 0.125% | 0.125%
Effective interest rate | 0.50% |  |

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