CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Allowance for doubtful accounts receivable (in dollars)	$ 1,191	$ 459
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred Stock Dividend Rate Percentage	8.00%	8.00%
Preferred stock, liquidation preference per share	$ 25	$ 25
Preferred stock, shares issued	6,100,000	6,100,000
Preferred stock, shares outstanding	6,100,000	6,100,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	64,720,361	64,742,713
Common stock, shares outstanding	64,720,000	64,742,000
Real Estate Investments, Other	$ 1,506,297	$ 935,962
Real Estate Investment Property, Accumulated Depreciation	138,830	128,121
Other Assets	34,150	35,742
Secured Debt	566,495	300,673
Accounts Payable and Accrued Liabilities, Total	36,562	53,816
Other Liabilities	47,071	22,092
Cash and Cash Equivalents, at Carrying Value, Total	35,260	15,240
Variable Interest Entity, Primary Beneficiary [Member]
Allowance for doubtful accounts receivable (in dollars)		9
Real Estate Investments, Other		32,875
Real Estate Investment Property, Accumulated Depreciation		318
Accounts Receivable, Net, Current	36	36
Other Assets		236
Secured Debt		21,170
Accounts Payable and Accrued Liabilities, Total	$ 534	534
Other Liabilities		607
Cash and Cash Equivalents, at Carrying Value, Total		$ 670