Annual report pursuant to Section 13 and 15(d)

PROPERTY, PLANT AND EQUIPMENT (Details)

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PROPERTY, PLANT AND EQUIPMENT (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment, net $ 209,315 $ 180,731  
Depreciation expense 35,546 31,303 24,630
Buildings [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 91,540 77,936  
Machinery and Equipment [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 340,942 303,674  
Buildings, Machinery and Equipment [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 432,482 381,610  
Less accumulated depreciation (250,073) (233,791)  
Total property, plant and equipment, net 182,409 147,819  
Land [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 16,453 15,534  
Construction in Progress [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross $ 10,453 $ 17,378