Indebtedness - Scheduled Principal Repayments and Term-loan Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Principal repayments and maturities
2022	$ 31,889
2023	180,595
2024	125,017
2025	247,574
2026	155,553
Thereafter	216,759
Total (1)	957,387	$ 962,812
Scheduled Principal Payments
Principal repayments and maturities
2022	12,319
2023	12,148
2024	12,993
2025	12,944
2026	9,550
Thereafter	85,332
Total (1)	145,286
Maturities
Principal repayments and maturities
2022	19,570
2023	168,447
2024	112,024
2025	234,630
2026	146,003
Thereafter	131,427
Total (1)	$ 812,101

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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