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SEGMENT INFORMATION - Information about the Company's Operations by Geographic Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 407,444 | $ 411,621 | $ 414,061 | $ 369,454 | $ 396,064 | $ 389,630 | $ 380,916 | $ 348,998 | $ 1,602,580 | $ 1,515,608 | $ 1,480,464
Long-lived assets | 1,645,579 |  |  |  | 1,557,709 |  |  |  | 1,645,579 | 1,557,709 | 1,464,822
North America |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 1,066,367 | 1,043,924 | 1,045,718
Long-lived assets | 1,182,250 |  |  |  | 1,069,862 |  |  |  | 1,182,250 | 1,069,862 | 1,042,263
Central and South America |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 6,171 | 6,518 | 10,160
Long-lived assets | 16,535 |  |  |  | 13,882 |  |  |  | 16,535 | 13,882 | 13,267
Europe |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 456,078 | 396,242 | 360,678
Long-lived assets | 365,455 |  |  |  | 382,940 |  |  |  | 365,455 | 382,940 | 334,847
Australia |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 23,276 | 21,507 | 20,043
Long-lived assets | 23,037 |  |  |  | 24,887 |  |  |  | 23,037 | 24,887 | 23,768
Asia |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 50,688 | 47,417 | 43,865
Long-lived assets | $ 58,302 |  |  |  | $ 66,138 |  |  |  | $ 58,302 | $ 66,138 | $ 50,677

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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