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Summary of Significant Accounting Policies - Accounts Receivable and Accrued Rent Receivable (Textual) (Details) $ in Thousands | Dec. 31, 2018 USD ($) Customer | Dec. 31, 2017 USD ($) Customer
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for Doubtful Accounts Receivable | $ 1,653 | $ 3,467
Accrued rent receivable, allowance | 11,266 | 13,645
Tenant Receivable [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for Doubtful Accounts Receivable | $ 1,700 | $ 3,500
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of tenant accounted for 10% or more of the Company's accounts receivable | Customer | 0 | 0

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- Definition Allowance for doubtful accrued rent receivable. + References No definition available. + Details
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Balance Type: | credit
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- Definition Number of tenants. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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