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Investments in Equity Affiliates, Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Jun. 30, 2017
Investment in Equity Affiliates |  |  |  |  |
(Loss) income from equity affiliates | $ 995,312 | $ 4,929,375 | $ 1,755,145 | $ 11,193,918 |
Multifamily |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |
Basis of equity participation interest before redemption | $ 1,500,000 |  | 1,500,000 |  | $ 0
Percentage of equity participation redeemed | 25.00% |  |  |  |
Arbor Residential Investor LLC | Non-qualified Residential Mortgages |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |
Amount funded | $ 600,000 |  | 600,000 |  |
Cash distributions classified as return of capital |  |  | 900,000 |  |
Arbor Residential Investor LLC | Non Qualified and Additional Residential Mortgages |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |
(Loss) income from equity affiliates |  | 300,000 |  | 400,000 |
Arbor Residential Investor LLC | Non Qualified and Additional Residential Mortgages | Maximum |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |
(Loss) income from equity affiliates | 100,000 |  | 100,000 |  |
Arbor Residential Investor LLC | Residential Mortgage Banking Company |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |
(Loss) income from equity affiliates | (1,300,000) | 3,900,000 | 1,900,000 | 8,500,000 |
Lexford Portfolio |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |
(Loss) income from equity affiliates | $ 700,000 | $ 700,000 | $ 2,000,000 | $ 2,100,000 |

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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21D -URI http://asc.fasb.org/extlink&oid=98514028&loc=SL94080555-108585 + Details
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