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Notes Receivable, Net - Schedule of Notes Receivable (Parenthetical) (Details) $ in Thousands | Mar. 31, 2020 USD ($) NotesReceivable | Dec. 31, 2019 USD ($) | Mar. 28, 2018 | Nov. 16, 2017
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Accounts Notes And Loans Receivable [Line Items] |  |  |  |
Number of notes receivable | NotesReceivable | 9 |  |  |
Notes receivable | $ 174,089 | $ 114,943 |  |
Core Portfolio |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |
Number of notes receivable | NotesReceivable | 7 |  |  |
Notes receivable | $ 135,467 | 76,467 |  |
Equity method investment, ownership percentage by third party | 24.78% |  | 14.11% | 38.89%
Core Portfolio | Brandywine Portfolio |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |
Notes receivable | $ 38,700 |  |  |
OP Unit Holders | Core Portfolio |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |
Number of notes receivable | NotesReceivable | 2 |  |  |
Notes receivable | $ 6,500 | $ 6,500 |  |

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- Definition Amount, before allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447 + Details
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