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Note 14 - Stockholders' Equity (Details) - Cash Dividends Declared - Preferred Stock (USD $)
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3 Months Ended | |||||||||||
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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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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| Dividends Payable [Line Items] | ||||||||||||
| Record Date | Dec. 20, 2013 | Sep. 23, 2013 | Jun. 28, 2013 | Mar. 28, 2013 | Dec. 24, 2012 | Sep. 28, 2012 | Jun. 25, 2012 | Mar. 29, 2012 | Dec. 27, 2011 | Sep. 30, 2011 | Jun. 10, 2011 | Mar. 31, 2011 |
| Payment Date | Jan. 27, 2014 | Oct. 25, 2013 | Jul. 25, 2013 | Apr. 25, 2013 | Jan. 25, 2013 | Oct. 25, 2012 | Jul. 25, 2012 | Apr. 25, 2012 | Jan. 25, 2012 | Oct. 25, 2011 | Jun. 27, 2011 | Apr. 26, 2011 |
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Preferred Stock [Member]
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| Dividends Payable [Line Items] | ||||||||||||
| Record Date | Jan. 01, 2014 | Oct. 01, 2013 | Jul. 01, 2013 | |||||||||
| Payment Date | Jan. 15, 2014 | Oct. 15, 2013 | Jul. 15, 2013 | |||||||||
| Cash Dividend Per Share (in Dollars per share) | $ 0.484375 | $ 0.484375 | $ 0.220660 | |||||||||