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Stockholders' Equity Schedule of Dividends Declared (Details) (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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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, 2010
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Sep. 30, 2010
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Jun. 30, 2010
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Mar. 31, 2010
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Dec. 31, 2009
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Sep. 30, 2012
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Sep. 30, 2011
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| Dividends Payable [Line Items] | ||||||||||||||
| Dividends Payable, Date Declared | Sep. 12, 2012 | Jun. 12, 2012 | Mar. 14, 2012 | Dec. 14, 2011 | Sep. 14, 2011 | Jun. 14, 2011 | Mar. 02, 2011 | Dec. 08, 2010 | Sep. 13, 2010 | Jun. 14, 2010 | Mar. 12, 2010 | Dec. 21, 2009 | ||
| Dividends Payable, Date of Record | Sep. 24, 2012 | Jun. 22, 2012 | Mar. 26, 2012 | Dec. 27, 2011 | Sep. 26, 2011 | Jun. 24, 2011 | Mar. 14, 2011 | Dec. 17, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2009 | ||
| Dividends Payable, Date to be Paid | Oct. 22, 2012 | Jul. 20, 2012 | Apr. 20, 2012 | Jan. 20, 2012 | Oct. 20, 2011 | Jul. 20, 2011 | Apr. 14, 2011 | Jan. 20, 2011 | Oct. 21, 2010 | Jul. 22, 2010 | Apr. 23, 2010 | Jan. 26, 2010 | ||
| Common Stock, Dividends, Per Share, Declared | $ 0.36 | $ 0.40 | $ 0.40 | $ 0.40 | $ 0.40 | $ 0.40 | $ 0.40 | $ 0.40 | $ 0.39 | $ 0.33 | $ 0.36 | $ 0.26 | $ 1.16 | $ 1.20 |
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- Definition
Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Date the declared dividend will be paid, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Date the dividend to be paid was declared, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. No definition available.
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- Details
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