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Debt Obligations - Convertible Notes due 2022 Narrative (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 29, 2016 | Mar. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument |  |  |  |  |
Outstanding amount payoff |  |  |  | $ 109,000 |
Amortization of debt discount and debt issuance costs |  |  | $ 2,407 | 6,431 | $ 4,257
8.2% Convertible Notes due 2022 |  |  |  |  |
Debt Instrument |  |  |  |  |
Interest rate description | The 2022 Convertible Notes constituted general, senior unsubordinated obligations of the Company and were guaranteed by certain subsidiaries of the Company, bore interest at a fixed coupon rate of 8.2% per annum payable quarterly and matured on March 31, 2022 |  |  |  |
Convertible Notes | KKR Member |  |  |  |  |
Debt Instrument |  |  |  |  |
Principal Amount | $ 20,000 |  |  |  |
Convertible Notes | MX II Member |  |  |  |  |
Debt Instrument |  |  |  |  |
Principal Amount | 4,000 |  |  |  |
Convertible Notes | KMGCP Member |  |  |  |  |
Debt Instrument |  |  |  |  |
Principal Amount | 1,000 |  |  |  |
Convertible Notes | Lender | KKR Member |  |  |  |  |
Debt Instrument |  |  |  |  |
Principal Amount | 75,000 |  |  |  |
Convertible Notes | 8.2% Convertible Notes due 2022 |  |  |  |  |
Debt Instrument |  |  |  |  |
Principal Amount | $ 100,000 |  |  |  |
Stated interest rate | 8.20% |  |  |  |
Outstanding amount payoff |  | $ 111,100 |  |  |
Convertible Notes Payable |  | $ 0 |  |  |
Convertible notes, premium percentage |  | 9.00% |  |  |
Interest expense |  |  |  | 2,571 | 10,166
Stated coupon interest |  |  |  | 2,050 | 8,200
Amortization of debt discount and debt issuance costs |  |  |  | $ 521 | $ 1,966

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