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BASIS OF PRESENTATION (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2017 | Jun. 30, 2016 | [1]
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated forfeitures when recognizing compensation expense | $ 500 |  |
Additional compensation related to the adoption of ASU 2016-09 |  | $ 8,405 | $ 678
Accounting Standards Update 2016-09 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Additional compensation related to the adoption of ASU 2016-09 | $ 300 |  |
[1] | See Note 1. Basis of Presentation for further discussion on the current presentation.

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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