Mortgages Payable - Summary of Maturities (Details) - Mortgages Payable - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Maturity of mortgages payable
2020	$ 82,600
2021	68,800
2022	111,800
2023	20,600
2024	112,100
Thereafter	10,800
Totals	$ 406,746	$ 408,419

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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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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