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Debt - Narrative (Details) - USD ($) |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 20, 2021 | Apr. 08, 2021 | Jun. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020 | Sep. 30, 2014
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment of debt |  |  | $ 1,100,000 |  | $ 1,086,000 | $ 0 |  |
Affiliated Entity | Chart E&C |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Percentage of common stock owned |  |  |  | 8.30% | 8.30% |  |  |
Senior Secured Term Note Member |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Repayments of Debt |  |  |  | $ 1,100,000 |  |  |  |
Senior Secured Term Note Member | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  |  |  | 3.15% | 3.00%
Secured promissory note - related party |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Deferral period | 1 year |  |  |  |  |  |  |
AmeriState Bank | Loan Agreement |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 10,000,000 |  |  |  |  |  |
Proceeds from loan |  | $ 7,000,000 |  |  |  |  |  |
Interest rate |  | 5.75% |  |  |  |  |  |
AmeriState Bank | Loan Agreement | Prime Rate |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate basis |  | 2.50% |  |  |  |  |  |
Promissory Note | Cadence Bank, N.A. | Loan Pursuant to CARES Act |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  | $ 1,100,000 |

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