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Stockholders' Equity - Additional Information (Detail) (USD $) | 0 Months Ended | 3 Months Ended | 1 Months Ended | 0 Months Ended
--- | --- | --- | --- | ---
Jan. 30, 2014 | Mar. 31, 2014 | Mar. 31, 2013 | Feb. 28, 2014 Series M [Member] | Mar. 25, 2014 Former Board of Directors Chairman [Member] | Jan. 02, 2014 Former Board of Directors Chairman [Member]
Equity [Line Items] |  |  |  |  |  |
Aggregate common stock shares to repurchase |  |  |  |  | 550,000 | 675,000
Repurchase Price |  |  |  |  | $ 13.16 | $ 11.11
Number of convertible preferred stock |  |  |  | 8,000 |  |
Number of preferred stock converted into common stock |  |  |  | 40,000 |  |
Preferred stock conversion factor |  |  |  | 5 |  |
Dividends per share declared on outstanding common stock | $ 0.10 | $ 0.10 | $ 0.08 |  |  |
Dividends payable date |  | Mar. 03, 2014 |  |  |  |
Dividends payable, shareholders record date |  | Feb. 19, 2014 |  |  |  |

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