Investment in Joint Venture (Details Textual) (USD $)			0 Months Ended				0 Months Ended
	Dec. 31, 2012 properties	Dec. 31, 2011	Dec. 28, 2012 Manhattan Collection Joint Venture [Member]	Dec. 31, 2012 Manhattan Collection Joint Venture [Member] properties	Dec. 27, 2012 Manhattan Collection Joint Venture [Member]	Jul. 29, 2011 Manhattan Collection Joint Venture [Member] properties	Dec. 28, 2012 Manhattan Collection Joint Venture [Member] Hotel [Member] First Mortgage [Member] properties	Dec. 27, 2012 Manhattan Collection Joint Venture [Member] Hotel [Member] First Mortgage [Member]	Dec. 26, 2012 Manhattan Collection Joint Venture [Member] Hotel [Member] First Mortgage [Member]
Investment in Joint Venture (Textual) [Abstract]
Equity interest issued in a joint venture				49.00%		49.00%
Number of properties owned	25			6		6
Transaction value						$ 908,000,000
Secured loan principal	366,010,000	251,539,000						410,000,000	553,200,000
Number of properties used as collateral for secured loan							5
Interest Rate								3.67%
Special loan					50,000,000
Special loan interest rate			9.75%
Additional equity contribution to joint venture			54,900,000
Total assets of joint venture				486,000,000
Total debt	468,508,000	251,539,000		410,000,000
Special Loan				50,000,000
Preferred capital				$ 18,800,000