SUBSEQUENT EVENTS (Details) (USD $)
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3 Months Ended | 12 Months Ended | 1 Months Ended | |||||
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Feb. 10, 2012
Dividend Declared [Member]
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Subsequent Event [Line Items] | ||||||||
Dividend declaration date | Feb. 10, 2012 | |||||||
Cash dividend declared (in dollars per share) | $ 0.495 | |||||||
Percentage increase of dividends declared over dividends paid in fiscal year (in hundredths) | 10.00% | |||||||
Cash dividends paid (in dollars per share) | $ 0.45 | $ 0.45 | $ 0.45 | $ 0.45 | $ 1.80 | $ 1.56 | $ 1.42 | |
Dividend payable date | Mar. 15, 2012 | |||||||
Stockholders of record date | Mar. 01, 2012 |