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Debt (Tables) | 12 Months Ended
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Dec. 31, 2021
Debt Disclosure [Abstract] |
Schedule of Long-term Debt Instruments | The following table summarizes long-term debt, net, at December 31, 2021 and 2020 (in thousands):
| 2021 |  | 2020
0.25% Convertible Senior Notes due 2028 |  |  |
Principal | $ | 345,000 |  |  | $ | — |
Unamortized debt discount | (8,963) |  |  | — |
Unamortized debt issuance costs | (208) |  |  | — |
Total 0.25% Convertible Senior Notes due 2028 | 335,829 |  |  | — |
1.25% Convertible Senior Notes due 2025 |  |  |
Principal | 201,250 |  |  | 201,250 |
Unamortized debt discount | (4,090) |  |  | (32,592) |
Unamortized debt issuance costs | (506) |  |  | (538) |
Total 1.25% Convertible Senior Notes due 2025, net | 196,654 |  |  | 168,120 |
Equipment financing obligations | 1,206 |  |  | 3,808 |
Total debt | 533,689 |  |  | 171,928 |
Less: Current portion of equipment financing obligations | (1,135) |  |  | (2,841) |
Total long-term debt, net | $ | 532,554 |  |  | $ | 169,087 |
Schedule of Maturities of Long-term Debt | Maturities of long-term debt at December 31, 2021 are summarized as follows (in thousands):
|  | 0.25% Convertible Senior Notes |  | 1.25% Convertible Senior Notes |  | Equipment Financing Obligations |  | Total Long-Term Debt
2022 |  | $ | — |  |  | $ | — |  |  | $ | 1,135 |  |  | $ | 1,135 |
2023 |  | — |  |  | — |  |  | 69 |  |  | 69 |
2024 |  | — |  |  | — |  |  | 2 |  |  | 2 |
2025 |  | — |  |  | 201,250 |  |  | — |  |  | 201,250 |
2026 |  | — |  |  | — |  |  | — |  |  | — |
Thereafter |  | 345,000 |  |  | — |  |  | — |  |  | 345,000 |
Total Debt |  | 345,000 |  |  | 201,250 |  |  | 1,206 |  |  | 547,456 |
Less: Current portion of long-term debt |  | — |  |  | — |  |  | (1,135) |  |  | (1,135) |
Less: Unamortized debt discount |  | (8,963) |  |  | (4,090) |  |  | — |  |  | (13,053) |
Less: Unamortized debt issuance costs |  | (208) |  |  | (506) |  |  | — |  |  | (714) |
Long-term debt, net |  | $ | 335,829 |  |  | $ | 196,654 |  |  | $ | 71 |  |  | $ | 532,554 |

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