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Note 6 - Preferred Stock (Detail) (USD $)
1 Months Ended 12 Months Ended
Jul. 15, 2008
Dec. 31, 2012
Dec. 31, 2011
Jun. 26, 2008
Dec. 31, 2012
Preferred Stock [Member]
Dec. 31, 2011
Preferred Stock [Member]
Temporary Equity, Shares Issued (in Shares)   0.00 259.21 1,000    
Stock Issue Discount, Fees and Expenses $ 8,400,000          
Temporary Equity, Shares Outstanding (in Shares)   0.00 259.21      
Temporary Equity, Liquidation Preference Per Share (in Dollars per share)   $ 100,000        
Temporary Equity, Redemption Value   0 25,921,000      
Temporary Equity, Carrying Amount, Attributable to Parent   0 24,841,000      
Dividends Payable     13,717,000   0 13,700,000
Stock Repurchased and Retired During Period, Value         25,900,000 13,400,000
Payments of Dividends         $ 16,700,000 $ 6,600,000
Preferred Stock, Dividend Rate, Percentage         17.00%