Investments in Equity Affiliates, Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investment in Equity Affiliates
Investment in Equity Affiliates	$ 23,625	$ 23,653
UPB of Loans to Equity Affiliates	1,688
Arbor Residential Investor LLC
Investment in Equity Affiliates
Investment in Equity Affiliates	19,137	19,193
West Shore Cafe
Investment in Equity Affiliates
Investment in Equity Affiliates	2,168	2,140
UPB of Loans to Equity Affiliates	1,688
Lightstone Value Plus REIT L.P
Investment in Equity Affiliates
Investment in Equity Affiliates	1,895	1,895
JT Prime
Investment in Equity Affiliates
Investment in Equity Affiliates	$ 425	$ 425

Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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