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Capital (Details) (USD $) | 0 Months Ended | 2 Months Ended | 9 Months Ended |  |  | 0 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 18, 2013 | Aug. 13, 2013 | Jun. 19, 2013 | Apr. 18, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2013 | May 01, 2013 | Dec. 31, 2012 | Sep. 18, 2013 Dividend Declared [Member] | Jun. 19, 2013 Dividend Declared [Member] | May 01, 2013 Common Shares [Member] | May 01, 2013 Common Shares [Member] IPO [Member] | May 01, 2013 Common Shares [Member] Private Placement [Member] | Sep. 30, 2012 Common Shares [Member] | Sep. 30, 2013 Common Shares [Member]
Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common shares |  |  |  |  |  |  |  |  |  |  |  | $ 148,500,000 |  |  |  |
Stock Issued During Period, Value, New Issues |  |  |  |  | 31,500,000 |  | 150,000,000 |  |  |  |  | 150,000,000 |  | 21,000,000.0 | 16,000 | 75,000
Share price |  |  |  |  |  |  |  |  |  |  |  |  | $ 20.00 | $ 20.00 |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  |  |  |  |  |  | 6,450,000 | 1,050,000 | 1,575,000 | 7,500,000
Common stock authorized |  |  |  |  |  | 500,000,000 | 500,000,000 |  | 500,000,000 |  |  |  |  |  |  |
Common stock par value |  |  |  |  |  | $ 0.01 | $ 0.01 |  | $ 0.01 |  |  |  |  |  |  |
Preferred stock authorized |  |  |  |  |  | 100,000,000 | 100,000,000 |  | 100,000,000 |  |  |  |  |  |  |
Preferred stock par value |  |  |  |  |  | $ 0.01 | $ 0.01 |  | $ 0.01 |  |  |  |  |  |  |
Common stock outstanding |  |  |  |  |  | 9,139,842 | 9,139,842 |  | 1,633,378 |  |  |  |  |  |  |
Preferred shares issued |  |  |  |  |  | 0 | 0 |  | 0 |  |  |  |  |  |  |
Issuance of restricted shares, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,464
Dividends Payable, Date Declared | Sep. 17, 2013 |  | Jun. 18, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Dividend, Percent |  |  |  | 3.7066% |  |  |  |  |  |  |  |  |  |  |  |
Stock Dividends, Shares |  |  |  | 58,378 |  |  |  |  |  |  |  |  |  |  |  |
Remaining Capital Commitment |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |
Dividend per share |  |  |  | $ 20.38 |  |  |  |  |  |  |  |  |  |  |  |
Dividend per share (in dollars per share) |  |  |  |  |  |  | $ 0.64 |  |  | $ 0.50 | $ 0.14 |  |  |  |  |
Dividends Payable, Date to be Paid | Oct. 25, 2013 |  | Jul. 26, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable, Date of Record | Sep. 27, 2013 |  | Jun. 28, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  | $ 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of shares, Shares |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  | (100) |
Intended Distribution of Taxable Net Income, Percentage on Annual Basis |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |

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