XML 192 R177.htm IDEA: XBRL DOCUMENT v3.21.4
Leases - Undiscounted cash flows (Details)
Dec. 31, 2020
USD ($)
Undiscounted cash flows for contractual subleases  
2021 $ 666,740
2022 823,900
2023 130,332
2024 134,054
2025 137,888
Thereafter 11,517
Total $ 1,904,431