Summary of Significant Accounting Policies - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts	$ (3,512)	$ (5,223)
Total	61,855	64,917
Rents currently due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, before allowance for doubtful accounts	7,576	13,321
Deferred rents
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, before allowance for doubtful accounts	5,388	8,205
Straight-line rent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, before allowance for doubtful accounts	46,429	44,863
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, before allowance for doubtful accounts	$ 5,974	$ 3,751