Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net loss	$ (22,856)	$ (14,056)
Adjustments to reconcile net loss to net cash used in operating activities:
Deferred income tax expense (benefit)	(17)	3
Rental equipment depreciation	13,740	15,075
Property, plant and equipment depreciation	4,143	3,956
Amortization of intangible assets	1,677	1,746
Goodwill impairment expense	4,336
Property, plant and equipment impairment expense	401
Accretion of discounts on short-term investments	96	96
Stock-based compensation expense	1,734	1,970
Bad debt expense (recovery)	292	(76)
Inventory obsolescence expense	3,222	3,001
Change in estimated fair value of contingent consideration	(5,035)	(3,524)
Gross profit from sale of used rental equipment	(11,061)	(6,678)
Gain on disposal of property, plant and equipment	(54)
Realized loss (gain) on sale of investments, net	22	(1,993)
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivables	1,751	(2,973)
Unbilled receivables	1,051	(1,051)
Inventories	(2,357)	(7,674)
Other assets	349	5,368
Accounts payable trade	(786)	4,712
Other liabilities	(683)	(5,074)
Net cash used in operating activities	(10,035)	(7,172)
Cash flows from investing activities:
Purchase of property, plant and equipment	(1,130)	(3,188)
Investment in rental equipment	(4,832)	(2,121)
Proceeds from the sale of property, plant and equipment	54	16
Proceeds from the sale of used rental equipment	11,583	10,626
Purchase of short-term investments	(450)	(12,544)
Proceeds from the sale of short-term investments	8,924	3,170
Business acquisition, net of acquired cash		(1,346)
Proceeds from sale of investment in debt security		2,069
Net cash provided by (used in) investing activities	14,149	(3,318)
Cash flows from financing activities:
Payments of contingent consideration	(807)	(1,421)
Debt issuance costs	(211)
Purchase of treasury stock	(695)	(6,805)
Net cash used in financing activities	(1,713)	(8,226)
Effect of exchange rate changes on cash	(358)	96
Increase (decrease) in cash and cash equivalents	2,043	(18,620)
Cash and cash equivalents, beginning of fiscal year	14,066	32,686
Cash and cash equivalents, end of fiscal year	$ 16,109	$ 14,066