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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - Schedule of Valuation and Qualifying Accounts - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Balance at Beginning of Year | $ 5,966 | $ 4,692 | $ 3,905
Recorded to Cost and Expense | (5,920) | 1,680 | 1,554
Accounts Written Off, net | 5,219 | (406) | (766)
Other | 1,143 | 0 | (1)
Balance at End of Year | 6,408 | 5,966 | 4,692
Inventory valuation [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Balance at Beginning of Year | 16,419 | 15,338 | 13,003
Recorded to Cost and Expense | 1,924 | 851 | 2,820
Accounts Written Off, net | (306) | 203 | (728)
Other | 8,028 | 27 | 243
Balance at End of Year | 26,065 | 16,419 | 15,338
Deferred tax valuation allowance [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Balance at Beginning of Year | 17,466 | 12,832 | 10,462
Recorded to Cost and Expense | (8,946) | 4,634 | 2,370
Accounts Written Off, net | 0 | 0 | 0
Other | 0 | 0 | 0
Balance at End of Year | 8,520 | 17,466 | 12,832
Bad debts [Member] | SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Balance at Beginning of Year | 1,109 | 1,217 | 1,628
Recorded to Cost and Expense | (40) | 279 | 349
Accounts Written Off, net | 11 | (387) | (759)
Other | 744 | 0 | (1)
Balance at End of Year | 1,824 | 1,109 | 1,217
Sales returns and allowances [Member] | SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Balance at Beginning of Year | 4,857 | 3,475 | 2,277
Recorded to Cost and Expense | (5,880) | 1,401 | 1,205
Accounts Written Off, net | 5,208 | (19) | (7)
Other | 399 | 0 | 0
Balance at End of Year | $ 4,584 | $ 4,857 | $ 3,475

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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