OTHER ASSETS (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Accumulated Amortization, Deferred Finance Costs	$ 4,500,000	$ 2,400,000
Other Assets [Abstract]
Other assets	68,400,000	38,100,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Depreciation and amortization expense	11,300,000	3,900,000	1,900,000
Finite-Lived Intangible Assets, Accumulated Amortization	10,500,000	3,100,000
Real estate accumulated depreciation	15,800,000	7,400,000
Accumulated Amortization, Deposits and Other	1,200,000	200,000
Leases, Acquired-in-Place [Member]
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2014	8,500,000
2015	5,700,000
2016	3,300,000
2017	1,600,000
2018	200,000
Office furniture and equipment [Member]
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Real estate accumulated depreciation	2,200,000	1,200,000
Other Assets [Member]
Other Assets [Abstract]
Loan fees, net of accumulated amortization of $4.5 and $2.4 at December 31, 2013 and 2012, respectively	14,100,000	14,500,000
Acquired in place leases, net of accumulated amortization of $10.5 and $3.1 at December 31, 2013 and 2012, respectively	19,300,000	9,300,000
Property, Plant and Equipment, Net	10,400,000	2,800,000
Prepaid expenses	7,600,000	5,300,000
Marketable securities	4,000,000	0
Deposits and other, net of accumulated amortization of $1.2 and $0.2 at December 31, 2012 and 2011, respectively	$ 13,000,000	$ 6,200,000