XML 91 R74.htm IDEA: XBRL DOCUMENT v3.21.1
Future Minimum Contractual revenue - Operating lease, Payments to be received (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Leases [Abstract]  
2021 $ 115,671
2022 75,451
2023 55,123
2024 38,582
2025 and thereafter 151,734
Total $ 436,561