Note 1 - Basis of Presentation and Significant Accounting Policies - Investment in Sales-type Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
2022	$ 204
2023	187
2024	186
2025	77
Gross investment in sales-type lease	654
Less: Unearned income	0
Total investment in sales-type lease	654
Current portion of total investment in sales-type lease	278	$ 294
Long-term portion of total investment in sales-type lease	376	$ 490
Net Investment in Lease, before Allowance for Credit Loss, Total	$ 654

Amount, before allowance for credit loss, of net investment in sales-type and direct financing leases.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount, before allowance for credit loss, of net investment in sales-type and direct financing leases, classified as current.

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Amount, before allowance for credit loss, of net investment in sales-type and direct financing leases, classified as noncurrent.

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Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term guaranteed by lessee or other third party unrelated to lessor, from sales-type and direct financing leases.

+ References

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Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

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Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of undiscounted lease receivable in excess of discounted receivable for sales-type and direct financing leases.

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