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Debt Obligations (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 30, 2014 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2027 | Dec. 31, 2026 | Dec. 31, 2025 | Dec. 31, 2021 | Sep. 28, 2020 | Nov. 20, 2014
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Convertible Debt | $ 87,500,000 |  |  |  |  |  |  |  |
Conv Debt Instrument Interest Rate Stated Percentage |  |  |  |  |  |  |  |  | 5.25%
Common stock, shares issued |  | 150,082,000 |  |  |  |  | 150,082,000 |  |
Convertible debt exchange Remaining Notes |  |  |  |  |  |  | $ 11,600,000 |  |
Convertible debt exchange - Total Principal Amount |  |  |  |  |  |  |  | $ 75,800,000 |
Long-term debt, net of deferred issuance costs |  | $ (23,477,000) |  |  |  |  | $ 0 |  |
Long-Term Debt |  | 23,500,000 |  |  |  |  |  |  |
Term Loan B |  | 25,000,000 |  |  |  |  |  |  |
Term Loan C |  | 50,000,000 |  |  |  |  |  |  |
Term Loan D |  | 50,000,000 |  |  |  |  |  |  |
Oxford Loan Facility |  | 150,000,000 |  |  |  |  |  |  |
Term Loan A |  | $ 25,000,000 |  |  |  |  |  |  |
Term Loan A&B Warrant % |  | 3.50% |  |  |  |  |  |  |
Term Loan C Warrant % |  | 1.75% |  |  |  |  |  |  |
Term Loan D Warrant % |  | 0.875% |  |  |  |  |  |  |
Term Loan A Warrants Number |  | 420,673 |  |  |  |  |  |  |
Term Loan A Warrant Exercise Price |  | $ 2.08 |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Warrant Issued |  | $ 700,000 | $ 0 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.90% |  |  |  |  |  |  |
Long-Term Debt, Percentage Bearing Fixed Interest, Percentage Rate |  | 8.01% |  |  |  |  |  |  |
Subordinated Borrowing, Interest Rate |  | 8.14% |  |  |  |  |  |  |
Final Payment % with no extention |  | 6.00% |  |  |  |  |  |  |
Final Payment % with extention |  | 7.00% |  |  |  |  |  |  |
Term Loan A Final Payment |  | $ 1,500,000 |  |  |  |  |  |  |
Term Loan A Net Cash Receipt |  | 24,200,000 |  |  |  |  |  |  |
Term Loan A Debt Issuance Costs |  | 400,000 |  |  |  |  |  |  |
Oxford Facility Fee |  | 500,000 |  |  |  |  |  |  |
Term Loan A Debt Discount |  | 3,000,000 |  |  |  |  |  |  |
Term Loan A Interest Expense |  | $ 100,000 |  |  |  |  |  |  |
2027 Oxford Principal Payments |  |  |  |  | $ 13,000,000 |  |  |  |
2027 Oxford Principal Payments2 |  |  |  | $ 4,800,000 |  | $ 8,700,000 |  |  |

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