Note 5 - Plant Closure (Tables)
12 Months Ended
Dec. 31, 2013
Disposal Groups Plant Closure Disclsoure [Abstract]  
Schedule of Disposal Group, Plant Closure Disposal [Table Text Block]
    2013  
    (in thousands)  

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