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Leases - Supplemental Balance Sheet Information Schedule (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | ---
ASSETS |  |
Property, plant and equipment, net | $ 34 | $ 89
Operating lease right-of-use assets, net | 15,943 | 17,021
Total lease assets | 15,977 | 17,110
Current liabilities: |  |
Current maturities of long-term debt | 17 | 58
Short-term operating lease liabilities | 788 | 991
Non-current liabilities: |  |
Long-term debt, net of current maturities | 5 | 22
Long-term operating lease liabilities, net of short-term | 15,439 | 16,188
Total lease liabilities | $ 16,249 | $ 17,259
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Property, plant and equipment, net | Property, plant and equipment, net
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Current maturities of long-term debt | Current maturities of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Total long-term debt | Total long-term debt

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + 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 (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from 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=123391704&loc=SL77918627-209977 + Details
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