Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ 12,206	$ (22,856)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred income tax expense (benefit)	3	(17)
Rental equipment depreciation	11,766	13,740
Property, plant and equipment depreciation	3,704	4,143
Amortization of intangible assets	768	1,677
Goodwill impairment	0	4,336
Property, plant and equipment impairment expense	0	401
Amortization of premiums (accretion of discounts) on short-term investments	(144)	96
Stock-based compensation expense	1,374	1,734
Bad debt expense (recovery)	(138)	292
Inventory obsolescence expense	2,229	3,222
Change in estimated fair value of contingent consideration	0	(5,035)
Gross profit from sale of used rental equipment	(4,424)	(11,061)
Loss (gain) on disposal of equipment	244	(54)
Realized loss on short-term investments	0	22
Realized foreign currency translation loss from dissolution of foreign subsidiary	38	0
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivable	(5,561)	1,751
Unbilled receivables	0	1,051
Inventories	(11,026)	(2,357)
Other assets	442	349
Accounts payable trade	41	(786)
Other liabilities	5,351	(683)
Net cash used provided by (used in) operating activities	15,558	(10,035)
Cash flows from investing activities:
Purchase of property, plant and equipment	(3,964)	(1,130)
Investment in rental equipment	(9,920)	(4,832)
Proceeds from the sale of used rental equipment	11,478	11,583
Purchase of short-term investments	(24,782)	(450)
Proceeds from the sale of short-term investments	10,900	8,924
Net cash provided by (used in) investing activities	(11,882)	14,149
Cash flows from financing activities:
Payments of contingent consideration	(175)	(807)
Debt issuance costs	(350)	(211)
Purchase of treasury stock	0	(695)
Net cash used in financing activities	(525)	(1,713)
Effect of exchange rate changes on cash	(457)	(358)
Increase in cash and cash equivalents	2,694	2,043
Cash and cash equivalents, beginning of fiscal year	16,109	14,066
Cash and cash equivalents, end of fiscal year	18,803	16,109
Satellite Property [Member]
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss (gain) on disposal of equipment	(1,315)	0
Cash flows from investing activities:
Proceeds from the sale of property, plant and equipment	3,682	0
Equipment [Member]
Cash flows from investing activities:
Proceeds from the sale of property, plant and equipment	$ 724	$ 54