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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Allowance for Doubtful Accounts |  |  |
Valuation and qualifying accounts [Roll Forward] |  |  |
Balance at Beginning of Period | $ 11,158 | $ 11,622 | $ 11,516
Additions charged to expense | 2,787 | 855 | 1,733
Additions charged to other Accounts | 20 | 762 | 642
Deductions | (3,119) | (2,081) | (2,269)
Balance at End of Period | 10,846 | 11,158 | 11,622
Deferred Tax Asset Valuation Allowance |  |  |
Valuation and qualifying accounts [Roll Forward] |  |  |
Balance at Beginning of Period | 15,188 | 21,917 | 23,463
Additions charged to expense | 821 | 2,482 | (1,279)
Additions charged to other Accounts | 0 | (8,510) | 0
Deductions | (657) | (701) | (267)
Balance at End of Period | $ 15,352 | $ 15,188 | $ 21,917

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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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