Related Party Transactions (Narrative) (Details) (USD $) In Thousands, unless otherwise specified								1 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 27, 2013	Dec. 31, 2012	Jun. 30, 2013 Asset Management Fees [Member]	Jun. 30, 2013 Brownmill, LLC [Member]	Apr. 12, 2011 Brownmill, LLC [Member]	Jun. 30, 2013 LVP Rego Park, LLC [Member]	Jun. 27, 2013 LVP CP Boston, LLC [Member]	Dec. 31, 2012 LVP CP Boston, LLC [Member]
Related Party Transaction [Line Items]
Asset management fee rate	0.95%
Due to Sponsor for unpaid asset management fees	$ 87		$ 113	$ 126
Ownership interest					48.60%	10.00%	10.00%
Outstanding balance of the Lightstone REIT I	$ 325	$ 2,300	$ 2,340
Percentage of joint venture interest disposed								20.00%	20.00%