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Note 11 - Property, Plant, and Equipment (Tables)
9 Months Ended
Sep. 30, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
   
September 30,
2014
   
December 31,
2013
  
   
(in thousands)
 
Building
  $ 66,764     $ 58,898  
Leasehold improvements
    23,942       23,834  
Land
    7,073       5,805  
Machinery and equipment
    104,176       93,617  
Furniture, fixtures, and automobiles
    11,171       9,355  
Construction in progress
    20,319       15,685   
Total property, plant, and equipment
    233,445       207,194  
Less accumulated depreciation and amortization
    (99,333 )     (90,575 )
Total property, plant, and equipment, net
  $ 134,112     $ 116,619