Note 5 - Plant Closure (Details) - Charges Incurred in Conjunction with Plant Closure (Cameron, Louisiana Menhaden Processing Plant [Member], USD $)
In Thousands, unless otherwise specified
1 Months Ended
Dec. 31, 2013
Cameron, Louisiana Menhaden Processing Plant [Member]
 
Note 5 - Plant Closure (Details) - Charges Incurred in Conjunction with Plant Closure [Line Items]  
Impairment of property, plant and equipment $ 4,796
Write-off material and supplies inventory 97
Employee severance accruals 345
Estimated decommissioning costs 250
Other ongoing closure costs not attributable to future production 1,109
Total loss related to plant closure $ 6,597