CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (6,768,000)	$ (1,050,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Deferred income tax expense (benefit)	(1,000)	6,000
Rental equipment depreciation	3,543,000	3,831,000
Property, plant and equipment depreciation	1,105,000	985,000
Amortization of intangible assets	446,000	433,000
Accretion of discounts on short-term investments	52,000
Stock-based compensation expense	536,000	548,000
Bad debt expense	15,000	7,000
Inventory obsolescence expense	671,000	617,000
Change in estimated fair value of contingent consideration	(2,440,000)	(697,000)
Gross profit from sale of used rental equipment	(2,612,000)	(4,127,000)
Realized loss short-term investments	7,000	0
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivables	1,477,000	5,143,000
Unbilled receivables		(4,263,000)
Inventories	74,000	(2,065,000)
Other assets	157,000	(1,422,000)
Accounts payable trade	(2,623,000)	4,053,000
Other liabilities	(965,000)	311,000
Net cash provided by (used in) operating activities	(7,326,000)	2,310,000
Cash flows from investing activities:
Purchase of property, plant and equipment	(145,000)	(597,000)
Investment in rental equipment	(782,000)	(13,000)
Proceeds from the sale of used rental equipment	1,048,000	112,000
Purchases of short-term investments	(450,000)
Proceeds from the sale of short-term investments	2,249,000
Net cash provided by (used in) investing activities	1,920,000	(498,000)
Cash flows from financing activities:
Payments on contingent consideration	(807,000)
Purchase of treasury stock	(695,000)	(828,000)
Net cash used in financing activities	(1,502,000)	(828,000)
Effect of exchange rate changes on cash	5,000	49,000
Increase (decrease) in cash and cash equivalents	(6,903,000)	1,033,000
Cash and cash equivalents, beginning of fiscal year	14,066,000	32,686,000
Cash and cash equivalents, end of fiscal period	7,163,000	33,719,000
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for income taxes	82,000	40,000
Issuance of notes receivable in connection with sale of used rental equipment	3,745,000	9,868,000
Inventory transferred to (from) rental equipment	863,000	$ (667,000)
Inventory transferred to property, plant and equipment	$ 172,000