Represents the additional maturity term of the debt instruments.

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Debt Instrument, Fair Value Adjustment, Net

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Represents the number of additional maturity terms of the debt instruments.

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Mortgage Loan in Cash Trap Event--Mortgage loan failed to meet the DSCR threshold and was IN a cash trap event.

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Represents the number of assets encumbered.

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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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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Debt (Details) $ in Thousands	1 Months Ended	3 Months Ended
Debt (Details) $ in Thousands	Apr. 30, 2019 increment	Mar. 31, 2021 USD ($) loan asset	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Debt
Number of Assets Encumbered \| asset		7
Long-term debt, gross		$ 704,447		$ 706,506
Deferred financing costs, net		(595)		(643)
Debt, net		703,852		705,863
Interest expense		$ 7,600	$ 8,000
Mortgage Loan in Cash Trap Event \| loan		3
Lender
Debt
Restricted Cash		$ 1,400
Senior Unsecured Notes
Debt
Debt Instrument, Redemption Price, Percentage		103.00%
Unsecured Debt \| 6.00% Percent, Due June 2025
Debt
Number of Assets Encumbered \| asset		0
Interest rate		6.00%
Long-term debt, gross		$ 494,578		495,759
Mortgage loans \| 4.95 Percent, Due October 2022
Debt
Number of Assets Encumbered \| asset		3
Interest rate		4.95%
Long-term debt, gross		$ 86,110		86,775
Mortgage loans \| 4.94 Percent, Due October 2022
Debt
Number of Assets Encumbered \| asset		1
Interest rate		4.94%
Long-term debt, gross		$ 27,759		27,972
Mortgage loans \| 2.59 Percent Due April 2024
Debt
Number of Assets Encumbered \| asset		3
Interest rate		1.71%
Long-term debt, gross		$ 96,000		96,000
Secured Debt \| 4.95 Percent, Due October 2022
Debt
Debt Instrument, Fair Value Adjustment, Net		700		900
Secured Debt \| 4.94 Percent, Due October 2022
Debt
Debt Instrument, Fair Value Adjustment, Net		200		300
Secured Debt \| LIBOR Plus 1.60%
Debt
Debt Instrument, Number of Additional Maturity Terms \| increment	2
Debt Instrument, Additional Maturity Term	1 year
Senior Unsecured Notes \| Unsecured Debt
Debt
Debt Instrument, Fair Value Adjustment, Net		$ 19,700		$ 20,900