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Restructuring (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 USD ($) employee | Mar. 31, 2021 USD ($) employee | Dec. 31, 2020 USD ($) employee | Mar. 31, 2020 USD ($) | Jun. 30, 2017 USD ($) employee | Sep. 30, 2018 USD ($) employee | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2017 USD ($)
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | $ 0 |  |  |  | $ 0 | $ 0 | $ 453 |
Restructuring charge |  |  |  |  |  |  | 995 | 133 | 0 |
Payments for restructuring |  |  |  |  |  |  | (935) | (117) | (359) |
Restructuring reversals |  |  |  |  |  |  | 0 | (16) | (87) |
Restructuring foreign currency fluctuation |  |  |  |  |  |  | 60 | 0 | (7) |
Restructuring reserve, ending balance |  |  |  |  |  | $ 453 | 0 | 0 | 0 |
Employee Termination Costs | 2020 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | 0 |  |  |  | 0 | 0 | 0 |
Restructuring charge |  |  |  |  |  |  | 0 | 133 | 0 |
Payments for restructuring |  |  |  |  |  |  | 0 | (117) | 0 |
Restructuring reversals |  |  |  |  |  |  | 0 | (16) | 0 |
Restructuring foreign currency fluctuation |  |  |  |  |  |  | 0 | 0 | 0 |
Restructuring reserve, ending balance |  |  |  |  |  | 0 | 0 | 0 | 0 |
Employee Termination Costs | Manufacturing Transition |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | 0 |  |  |  | 0 | 0 | 147 |
Restructuring charge |  |  |  |  |  |  | 0 | 0 | 0 |
Payments for restructuring |  |  |  |  |  |  | 0 | 0 | (108) |
Restructuring reversals |  |  |  |  |  |  | 0 | 0 | (39) |
Restructuring foreign currency fluctuation |  |  |  |  |  |  | 0 | 0 | 0 |
Restructuring reserve, ending balance |  |  |  |  |  | 147 | 0 | 0 | 0 |
Employee Termination Costs | 2017 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | 0 |  |  |  | 0 | 0 | 293 |
Restructuring charge |  |  |  |  |  |  | 0 | 0 | 0 |
Payments for restructuring |  |  |  |  |  |  | 0 | 0 | (233) |
Restructuring reversals |  |  |  |  |  |  | 0 | 0 | (53) |
Restructuring foreign currency fluctuation |  |  |  |  |  |  | 0 | 0 | (7) |
Restructuring reserve, ending balance |  |  |  |  |  | 293 | 0 | 0 | 0 |
Employee Termination Costs | 2021 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | 0 |  |  |  | 0 | 0 | 0 |
Restructuring charge |  |  |  |  |  |  | 995 | 0 | 0 |
Payments for restructuring |  |  |  |  |  |  | (935) | 0 | 0 |
Restructuring reversals |  |  |  |  |  |  | 0 | 0 | 0 |
Restructuring foreign currency fluctuation |  |  |  |  |  |  | 60 | 0 | 0 |
Restructuring reserve, ending balance |  |  |  |  |  | 0 | 0 | 0 | 0 |
Other | 2017 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | $ 0 |  |  |  | 0 | 0 | 13 |
Restructuring charge |  |  |  |  |  |  | 0 | 0 | 0 |
Payments for restructuring |  |  |  |  |  |  | 0 | 0 | (18) |
Restructuring reversals |  |  |  |  |  |  | 0 | 0 | 5 |
Restructuring foreign currency fluctuation |  |  |  |  |  |  | 0 | 0 | 0 |
Restructuring reserve, ending balance |  |  |  |  |  | $ 13 | $ 0 | $ 0 | $ 0 |
IoT Products & Services | 2020 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |
Number of positions eliminated | employee |  | 2 |  |  |  |  |  |  |  |
IoT Products & Services | Manufacturing Transition |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |
Number of positions eliminated | employee |  |  |  |  |  | 53 |  |  |  |
IoT Products & Services | 2017 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring charge |  |  |  |  |  |  |  |  |  | $ 2,500
IoT Products & Services | 2021 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |
Number of positions eliminated | employee |  |  | 19 |  |  |  |  |  |  |
IoT Products & Services | Employee Termination Costs | 2020 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring charge |  |  |  | $ 38 |  |  |  |  |  |
IoT Products & Services | Employee Termination Costs | Manufacturing Transition |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring charge |  |  |  |  |  | $ 500 |  |  |  |
IoT Products & Services | Employee Termination Costs | 2017 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring charge |  |  |  |  | $ 2,300 |  |  |  |  |
IoT Products & Services | Employee Termination Costs | 2021 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring charge | $ 100 | $ 200 | $ 700 |  |  |  |  |  |  |
IoT Products & Services | Contract Termination | 2017 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring charge |  |  |  |  | $ 200 |  |  |  |  |
IoT Products & Services | UNITED STATES | 2017 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |
Number of positions eliminated | employee |  |  |  |  | 10 |  |  |  |  |
IoT Products & Services | FRANCE | 2017 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |
Number of positions eliminated | employee |  |  |  |  | 8 |  |  |  |  |
IoT Solutions | 2020 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |
Number of positions eliminated | employee | 22 |  |  |  |  |  |  |  |  |
IoT Solutions | Employee Termination Costs | 2020 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |
Restructuring charge | $ 95 |  |  |  |  |  |  |  |  |

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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109237686&loc=d3e17752-110868 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(1)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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- Definition Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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