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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $)
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3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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| Dividends on common stock, per share | $ 0.0375 | $ 0.0375 | $ 0.0375 | $ 0.0375 | $ 0.1125 | $ 0.1125 |