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Capital (Details) (USD $) In Millions, except Share data, unless otherwise specified | 0 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 18, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 24, 2012 | May 01, 2013 Subsequent Event [Member] | Apr. 18, 2013 Subsequent Event [Member] Dividend Declared [Member]
Dividends Payable [Line Items] |  |  |  |  |  |
Common stock authorized |  | 500,000,000 | 500,000,000 |  |  |
Common stock par value |  | $ 0.01 | $ 0.01 |  |  |
Preferred stock authorized |  | 100,000,000 | 100,000,000 |  |  |
Preferred stock par value |  | $ 0.01 | $ 0.01 |  |  |
Common stock outstanding |  | 1,633,378 | 1,633,378 |  |  |
Preferred shares issued |  | 0 | 0 |  |  |
Common Stock, Value, Subscriptions |  |  |  | $ 31.5 |  |
Capital commitments |  | 21.0 | 21.0 |  |  |
Remaining Capital Commitment |  |  |  |  | $ 0 |
Stock dividend declared percent |  |  |  |  |  | 3.7066%
Stock dividend (in shares) | 58,378 |  |  |  |  |
Dividend per share (in dollars per share) |  |  |  |  |  | $ 20.38

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