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Related Party Transactions and Investments in Non-Consolidated Entities - Sponsored REIT Loans outstanding (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Sponsored REITs |  |  |
Maximum amount of loan | $ 21,000,000 |  |
Amount Drawn | $ 21,000,000 |  | $ 21,000,000
Sponsored REITs |  |  |
Sponsored REITs |  |  |
Term of sponsored REIT loan secured by mortgage, minimum | 1 year |  |
Term of sponsored REIT loan secured by mortgage, maximum | 3 years |  |
Interest income and fees from the Sponsored REIT Loans | $ 1,149,000 | $ 2,948,000 |
Mortgage loan secured by property | FSP Monument Circle LLC |  |  |
Sponsored REITs |  |  |
Maximum amount of loan | 21,000,000 |  |
Amount Drawn | $ 21,000,000 |  |
Interest rate (as a percent) | 7.19% |  |
Origination fee | $ 164,000 |  |
Exit fee | $ 38,000 |  |

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- Definition Stated maximum period for maturity of the mortgage loan receivable on real estate. + References No definition available. + Details
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- Definition Stated minimum period for maturity of the mortgage loan receivable on real estate. + References No definition available. + Details
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- Definition For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(e)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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