Note 12 - Notes Payable and Long-Term Debt (Tables)
12 Months Ended
Dec. 31, 2013
Disclosure Text Block [Abstract]  
Schedule of Debt [Table Text Block]
   

December 31,

2013

   

December 31,

2012

 
   

(in thousands)

 

U.S. government guaranteed obligations (Title XI loans) collateralized by a first lien on certain vessels and certain plant assets:

               

Amounts due in installments through 2025, interest from 5.7% to 7.6%

  $ 24,211     $ 27,228  

Amounts due in installments through 2014, interest at Eurodollar rates plus 0.5% (0.7% and 0.8% at December 31, 2013 and December 31, 2012, respectively)

    31       72  

Total debt

    24,242       27,300  

Less current maturities

    (3,112 )     (3,058 )

Long-term debt

  $ 21,130     $ 24,242  
Schedule of Maturities of Long-term Debt [Table Text Block]

2014

   

2015

   

2016

   

2017

   

2018

   

Thereafter

$3,113

    $2,643     $2,800     $2,788     $2,969     $9,929