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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Notes Payable (Mortgage Notes) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Feb. 02, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 1,935,835		$ 2,218,093
Secured Mortgage Notes
Debt Instrument [Line Items]
Long-term debt	685,835		716,593
Meridian Mark Plaza \| Secured Mortgage Notes
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 23,000	$ 22,978