Leases - Supplemental cash flow information (Details) - USD ($) |
1 Months Ended | 2 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | |
|---|---|---|---|---|---|---|
Oct. 31, 2019 |
Oct. 31, 2019 |
Dec. 31, 2019 |
Dec. 31, 2019 |
Oct. 03, 2019 |
Dec. 31, 2020 |
|
| Operating leases | ||||||
| Operating cash flows from operating leases | $ 12,750 | $ 89,500 | ||||
| Financial Designation, Predecessor and Successor [Fixed List] | Successor | Successor | Successor | Predecessor | Successor | |