Stockholders' Equity (Details Textual) (USD $) | 3 Months Ended | 12 Months Ended | 0 Months Ended | | |
Mar. 31, 2015 | Dec. 31, 2014 | Jan. 16, 2015 | 1-May-15 | Jun. 30, 2013 | Feb. 10, 2013 |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Common stock, shares authorized | 580,000,000 | 580,000,000 | | | | |
Common stock, par value | $0.01 | $0.01 | | | | |
Preferred stock, shares authorized | 20,000,000 | | | | | |
Preferred stock, par value | $0.01 | | | | | |
Proceeds from issuance of common stock | $132,300,000 | | | | | |
Annualized rate | | | | | $0.50 | |
Percentage of annualized rate | | | | | 5.00% | |
Annualized rate per share | | | | | $10 | |
Common Stock Reinvested | 13,300,000 | | | | | |
Proceeds from Issuance of Preferred Stock and Preference Stock | 110,200,000 | 94,800,000 | | | | |
Net Ordinary Taxable Income | 90.00% | | | | | |
Number Of Days Prior Notice To Stock holders Regarding Changes In Program | 30 days | | | | | |
Stock Issued During Period, Value, New Issues | 91,000 | | | | | |
Series B Preferred Stock [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Percentage of annualized rate | 7.50% | | | | | |
Preferred Stock, Shares Issued | 1,101,560 | 946,560 | | | | |
Preferred Stock Convertible Number Of Equity Instruments | 10,993,613 | 9,446,707 | | | | |
Preferred Units Issuable Equity Commitment | 53,780 | | | | | |
Construction Loan Originations Percentage | 6.00% | | | | | |
Preferred Stock Liquidation Preference Percentage | 10.00% | | | | | |
Preferred Units, Cumulative Cash Distributions | 2,800,000 | | | | | |
Series B Preferred Stock [Member] | First Issuance [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Stock Issued During Period, Shares, New Issues | 135,980 | | | | | |
Stock Issued During Period, Value, New Issues | 13,600,000 | | | | | |
Series B Preferred Stock [Member] | Second Issuance [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Stock Issued During Period, Value, New Issues | 3,100,000 | | | | | |
Series B Preferred Stock [Member] | March Letter [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Stock Issued During Period, Shares, New Issues | 166,800 | | | | | |
Stock Issued During Period, Value, New Issues | 16,700,000 | | | | | |
Series B Preferred Stock [Member] | Georgetown Loan [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Stock Issued During Period, Shares, New Issues | | | 419,120 | | | |
Debt Instrument, Face Amount | | | 41,900,000 | | | |
Series B Preferred Stock [Member] | Georgetown Loan [Member] | First Issuance [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Stock Issued During Period, Shares, New Issues | 19,020 | | | | | |
Series B Preferred Stock [Member] | Georgetown Loan [Member] | Second Issuance [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Stock Issued During Period, Shares, New Issues | 400,100 | | | | | |
Series B Preferred Stock [Member] | Georgetown Loan [Member] | January Letter [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Stock Issued During Period, Shares, New Issues | | | 155,000 | | | |
Convertible Preferred Stock, Shares Issued upon Conversion | | | 1,546,906 | | | |
Series B Preferred Stock [Member] | Subsequent Event [Member] | Georgetown Loan [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Stock Issued During Period, Shares, New Issues | | | | 430,920 | | |
Convertible Preferred Stock, Shares Issued upon Conversion | | | | 4,300,599 | | |
Series C Preferred Stock [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Preferred stock, shares authorized | 1,000 | 1,000 | | | | |
Preferred stock, par value | $0.01 | $0.01 | | | | |
Percentage of annualized rate | 3.00% | | | | | |
Preferred Stock, Shares Issued | 1,000 | 1,000 | | | | |
Series C And Series B Preferred Stock [Member] | | | | | | |
Stockholders' Equity (Textual) [Abstract] | | | | | | |
Equity Interests Issued Or Issuable Amount | | | | | | $158,700,000 |