Annual report pursuant to Section 13 and 15(d)

SEGMENT INFORMATION - Information about the Company's Operations by Geographic Area (Details)

v3.8.0.1
SEGMENT INFORMATION - Information about the Company's Operations by Geographic Area (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]                        
Sales $ 396,064 $ 389,630 $ 380,916 $ 348,998 $ 376,995 $ 382,061 $ 367,176 $ 354,232 $ 1,515,608 $ 1,480,464 $ 1,426,068  
Long-lived assets 1,557,709       1,464,822       1,557,709 1,464,822   $ 1,498,136
United States                        
Revenues from External Customers and Long-Lived Assets [Line Items]                        
Sales                 1,014,906 1,018,129 936,513  
Long-lived assets 1,027,891       1,000,870       1,027,891 1,000,870   1,016,703
Central and South America                        
Revenues from External Customers and Long-Lived Assets [Line Items]                        
Sales                 6,518 10,160 8,806  
Long-lived assets 13,882       13,267       13,882 13,267   17,488
Canada                        
Revenues from External Customers and Long-Lived Assets [Line Items]                        
Sales                 29,018 27,589 30,367  
Long-lived assets 41,971       41,393       41,971 41,393   41,690
Europe                        
Revenues from External Customers and Long-Lived Assets [Line Items]                        
Sales                 396,242 360,678 398,533  
Long-lived assets 382,940       334,847       382,940 334,847   349,533
Australia                        
Revenues from External Customers and Long-Lived Assets [Line Items]                        
Sales                 21,507 20,043 21,225  
Long-lived assets 24,887       23,768       24,887 23,768   22,072
Asia                        
Revenues from External Customers and Long-Lived Assets [Line Items]                        
Sales                 47,417 43,865 $ 30,624  
Long-lived assets $ 66,138       $ 50,677       $ 66,138 $ 50,677   $ 50,650