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Stockholders' Equity (Details 1)
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1 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Feb. 29, 2012
Series C Preferred Stock [Member]
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Dec. 31, 2012
Series C Preferred Stock [Member]
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Dec. 31, 2012
Ordinary income [Member]
Common Stock [Member]
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Dec. 31, 2011
Ordinary income [Member]
Common Stock [Member]
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Dec. 31, 2010
Ordinary income [Member]
Common Stock [Member]
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Dec. 31, 2012
Ordinary income [Member]
Senior Common Stock [Member]
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Dec. 31, 2011
Ordinary income [Member]
Senior Common Stock [Member]
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Dec. 31, 2010
Ordinary income [Member]
Senior Common Stock [Member]
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Dec. 31, 2012
Ordinary income [Member]
Series A Preferred Stock [Member]
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Dec. 31, 2011
Ordinary income [Member]
Series A Preferred Stock [Member]
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Dec. 31, 2010
Ordinary income [Member]
Series A Preferred Stock [Member]
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Dec. 31, 2012
Ordinary income [Member]
Series B Preferred Stock [Member]
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Dec. 31, 2011
Ordinary income [Member]
Series B Preferred Stock [Member]
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Dec. 31, 2010
Ordinary income [Member]
Series B Preferred Stock [Member]
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Dec. 31, 2012
Ordinary income [Member]
Series C Preferred Stock [Member]
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Dec. 31, 2012
Return of capital [Member]
Common Stock [Member]
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Dec. 31, 2011
Return of capital [Member]
Common Stock [Member]
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Dec. 31, 2010
Return of capital [Member]
Common Stock [Member]
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Dec. 31, 2012
Return of capital [Member]
Senior Common Stock [Member]
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Dec. 31, 2011
Return of capital [Member]
Senior Common Stock [Member]
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Dec. 31, 2010
Return of capital [Member]
Senior Common Stock [Member]
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Dec. 31, 2012
Return of capital [Member]
Series A Preferred Stock [Member]
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Dec. 31, 2011
Return of capital [Member]
Series A Preferred Stock [Member]
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Dec. 31, 2010
Return of capital [Member]
Series A Preferred Stock [Member]
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Dec. 31, 2012
Return of capital [Member]
Series B Preferred Stock [Member]
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Dec. 31, 2011
Return of capital [Member]
Series B Preferred Stock [Member]
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Dec. 31, 2010
Return of capital [Member]
Series B Preferred Stock [Member]
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Dec. 31, 2012
Return of capital [Member]
Series C Preferred Stock [Member]
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| Characterization of distributions | ||||||||||||||||||||||||||||
| Common stock | 0.00% | 16.6256% | 15.7654% | 0.00% | 100.00% | 100.00% | 100.00% | 83.3744% | 84.2346% | 100.00% | 0.00% | 0.00% | ||||||||||||||||
| Preferred stock | 7.125% | 7.125% | 91.7083% | 100.00% | 100.00% | 91.7083% | 100.00% | 100.00% | 91.7083% | 8.2917% | 0.00% | 0.00% | 8.2917% | 0.00% | 0.00% | 8.2917% | ||||||||||||