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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Sep. 30, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |  |
Schedule II- Valuation and Qualifying Accounts | SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS DIGI INTERNATIONAL INC. (in thousands)
|  |  |  | Additions |  |  |  |  |  |
Description |  | Balance at beginning of period |  | Charged to costs and expenses |  | Charged to Other Accounts |  |  | Deductions |  |  | Balance at end of period
Valuation allowance - deferred tax assets |  |  |  |  |  |  |  |  |  |  |  |
September 30, 2020 |  | $ | 3,810 |  |  | $ | 670 |  |  | $ | — |  |  |  | $ | 108 |  |  |  | $ | 4,372 |
September 30, 2019 |  | $ | 3,291 |  |  | $ | 529 |  |  | $ | — |  |  |  | $ | 10 |  |  |  | $ | 3,810 |
September 30, 2018 |  | $ | 5,952 |  |  | $ | 521 |  |  | $ | — |  |  |  | $ | 3,182 |  |  |  | $ | 3,291 |
Valuation account - doubtful accounts |  |  |  |  |  |  |  |  |  |  |  |
September 30, 2020 |  | $ | 968 |  |  | $ | 2,534 |  |  | $ | — |  |  |  | $ | (276) |  | (2) |  | $ | 3,778 |
September 30, 2019 |  | $ | 785 |  |  | $ | 635 |  |  | $ | — |  |  |  | $ | 452 |  | (2) |  | $ | 968 |
September 30, 2018 |  | $ | 341 |  |  | $ | 729 |  |  | $ | 40 |  | (1) |  | $ | 325 |  | (2) |  | $ | 785 |
Reserve for future credit returns and pricing adjustments |  |  |  |  |  |  |  |  |  |  |  |
September 30, 2020 |  | $ | 2,677 |  |  | $ | 17,816 |  |  | $ | — |  |  |  | $ | 19,017 |  |  |  | $ | 1,476 |
September 30, 2019 |  | $ | 2,560 |  |  | $ | 12,640 |  |  | $ | — |  |  |  | $ | 12,523 |  |  |  | $ | 2,677 |
September 30, 2018 |  | $ | 2,169 |  |  | $ | 10,715 |  |  | $ | — |  |  |  | $ | 10,324 |  |  |  | $ | 2,560 |
(1)Established through purchase accounting relating to the acquisition of TempAlert (2)Uncollectible accounts charged against allowance, net of recoveries | [1],[2]
[1] | Recorded in Income tax (benefit) expense in our Consolidated Statements of Operations.
[2] | Uncollectible accounts charged against allowance, net of recoveries

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: 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=120395691&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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