Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Characterization of Distributions (Detail)

v2.4.0.8
Stockholders' Equity - Characterization of Distributions (Detail)
1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Feb. 29, 2012
Series C Preferred Stock [Member]
Dec. 31, 2013
Series C Preferred Stock [Member]
Dec. 31, 2013
Ordinary Income [Member]
Common Stock [Member]
Dec. 31, 2012
Ordinary Income [Member]
Common Stock [Member]
Dec. 31, 2011
Ordinary Income [Member]
Common Stock [Member]
Dec. 31, 2013
Ordinary Income [Member]
Senior Common Stock [Member]
Dec. 31, 2012
Ordinary Income [Member]
Senior Common Stock [Member]
Dec. 31, 2011
Ordinary Income [Member]
Senior Common Stock [Member]
Dec. 31, 2013
Ordinary Income [Member]
Series A Preferred Stock [Member]
Dec. 31, 2012
Ordinary Income [Member]
Series A Preferred Stock [Member]
Dec. 31, 2011
Ordinary Income [Member]
Series A Preferred Stock [Member]
Dec. 31, 2013
Ordinary Income [Member]
Series B Preferred Stock [Member]
Dec. 31, 2012
Ordinary Income [Member]
Series B Preferred Stock [Member]
Dec. 31, 2011
Ordinary Income [Member]
Series B Preferred Stock [Member]
Dec. 31, 2013
Ordinary Income [Member]
Series C Preferred Stock [Member]
Dec. 31, 2012
Ordinary Income [Member]
Series C Preferred Stock [Member]
Dec. 31, 2013
Return of Capital [Member]
Common Stock [Member]
Dec. 31, 2012
Return of Capital [Member]
Common Stock [Member]
Dec. 31, 2011
Return of Capital [Member]
Common Stock [Member]
Dec. 31, 2013
Return of Capital [Member]
Senior Common Stock [Member]
Dec. 31, 2012
Return of Capital [Member]
Senior Common Stock [Member]
Dec. 31, 2011
Return of Capital [Member]
Senior Common Stock [Member]
Dec. 31, 2013
Return of Capital [Member]
Series A Preferred Stock [Member]
Dec. 31, 2012
Return of Capital [Member]
Series A Preferred Stock [Member]
Dec. 31, 2011
Return of Capital [Member]
Series A Preferred Stock [Member]
Dec. 31, 2013
Return of Capital [Member]
Series B Preferred Stock [Member]
Dec. 31, 2012
Return of Capital [Member]
Series B Preferred Stock [Member]
Dec. 31, 2011
Return of Capital [Member]
Series B Preferred Stock [Member]
Dec. 31, 2013
Return of Capital [Member]
Series C Preferred Stock [Member]
Dec. 31, 2012
Return of Capital [Member]
Series C Preferred Stock [Member]
Dividends Payable [Line Items]                                                            
Common stock     18.32962% 0.00% 16.6256% 100.00% 0.00% 100.00%                 81.67038% 100.00% 83.3744% 0.00% 100.00% 0.00%                
Preferred stock 7.125% 7.125%             100.00% 91.7083% 100.00% 100.00% 91.7083% 100.00% 100.00% 91.7083%             0.00% 8.2917% 0.00% 0.00% 8.2917% 0.00% 0.00% 8.2917%