Annual report pursuant to Section 13 and 15(d)

Permit and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details)

v3.21.1
Permit and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - Intangible Assets [Member]
$ in Thousands
Dec. 31, 2020
USD ($)
2021 $ 199
2022 172
2023 132
2024 11
2025 $ 11