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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Impairment Effects on Earnings Per Share [Line Items] |  |  |  |
Amortization |  | $ 5,800 | $ 5,400 | $ 1,100
Expected amortization in the next fiscal year |  | 7,000 |  |
Expected amortization in 2020 | $ 7,000 |  | 7,000 |
Expected amortization in 2021 | 7,000 |  | 7,000 |
Expected amortization in 2022 | 7,000 |  | 7,000 |
Expected amortization in 2023 |  | 6,400 |  |
Expected amortization in 2024 |  | 6,200 |  |
Goodwill | 64,777 | $ 82,786 | 64,777 | $ 51,705
Goodwill impairment loss |  |  | 4,719 |
TerraVici |  |  |  |
Impairment Effects on Earnings Per Share [Line Items] |  |  |  |
Goodwill | 4,700 |  | $ 4,700 |
Goodwill impairment loss | 4,700 |  |  |
Goodwill impairment loss, net of tax | $ 3,500 |  |  |
Goodwill impairment loss per diluted share (in dollars per share) | $ 0.03 |  |  |
Intangible assets impairment loss | $ 900 |  |  |
Intangible assets impairment loss, net of tax | $ 700 |  |  |
Intangible assets impairment loss per diluted share (in dollars per share) | $ 0.01 |  |  |

X
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period related to goodwill impairment. + References No definition available. + Details
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period relating to impairment of intangible assets, excluding goodwill. + References No definition available. + Details
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- Definition The amount of impairment loss, net of tax recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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