Investment in Unconsolidated Joint Ventures (EP II LLC) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
Schedule of Equity Method Investments [Line Items]
Amount of loans guaranteed (up to)	$ 3,400
Gables
Schedule of Equity Method Investments [Line Items]
Amount of loans guaranteed (up to)	$ 1,100
EP II LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage	75.00%
Outstanding balance of mortgage loan	$ 45,000
Cash balance of joint venture	$ 794
EP II LLC \| LIBOR
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate (percent)	1.85%
EP II LLC \| Gables
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage	25.00%

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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The carrying amount of the outstanding balance due under the mortgage loan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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-Name Accounting Standards Codification
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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.

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