Note 10 - Property, Plant, and Equipment (Details) (USD $)
1 Months Ended 12 Months Ended 1 Months Ended
Jun. 30, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Cameron, Louisiana Menhaden Processing Plant [Member]
Note 10 - Property, Plant, and Equipment (Details) [Line Items]          
Depreciation   $ 18,900,000 $ 16,300,000 $ 14,700,000  
Interest Costs Capitalized   312,300 765,300 245,300  
Impairment of Long-Lived Assets to be Disposed of         4,796,000
Proceeds from Sale of Property, Plant, and Equipment 5,200,000        
Gain (Loss) on Disposition of Property Plant Equipment     $ 4,000,000