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Debt Obligations - 2022 Convertible Notes Interest Expense Components (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Debt Instrument |  |  |  |
Amortization of debt discount and debt issuance costs |  |  | $ 5,631 | $ 3,150
Total interest expense | $ 7,540 | $ 5,771 | 23,089 | 17,166
8.2% Convertible Notes due 2022 | Convertible Notes |  |  |  |
Debt Instrument |  |  |  |
Stated coupon interest |  | 2,050 | 2,050 | 6,150
Amortization of debt discount and debt issuance costs |  | 497 | 521 | 1,457
Total Interest expense |  | $ 2,547 | $ 2,571 | $ 7,607

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