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Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2020 USD ($) segment lease | Sep. 30, 2019 USD ($)
Number of Operating Segments | segment | 2 |
Research and Development Expense (in Dollars) | $ 2,798 | $ 2,800
Impairment of long-lived assets | $ 0 |
Number of leases not yet commenced | lease | 0 |
One single lease component | true |
Finance Lease, Right-of-Use Asset | $ 0 |
Inventory Valuation Reserves | $ 4,100 | $ 3,800
Number of Years Defined Benefit Plans are Closed to Newly Hired Employees | 2 years |
Number of Years Supplementary Retirement Plans are Closed to Newly Hired Employees | 2 years |
Minimum |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |
Property, Plant and Equipment, Useful Life | 3 years |
Maximum |  |
Finite-Lived Intangible Asset, Useful Life | 10 years |
Property, Plant and Equipment, Useful Life | 7 years |

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- Definition Number of years that all of the Company's defined benefit plans are closed to newly hired employees. + References No definition available. + Details
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- Definition Amount of lessee's right to use underlying asset under finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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