CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net loss	$ (8,818,000)	$ (19,005,000)
Adjustments to reconcile net loss to net provided by (cash used) in operating activities:
Deferred income tax benefit	(22,000)	(37,000)
Rental equipment depreciation	9,703,000	7,475,000
Property, plant and equipment depreciation	3,012,000	3,105,000
Impairment of long-lived assets		488,000
Amortization of intangible assets	1,228,000	0
Accretion of discounts on short-term investments	(9,000)	31,000
Stock-based compensation expense	1,781,000	1,833,000
Bad debt expense	599,000	3,081,000
Inventory obsolescence expense	3,013,000	4,001,000
Gross profit from sale of used rental equipment	(244,000)	(4,966,000)
Gain on disposal of property, plant and equipment	(90,000)	(25,000)
Realized loss on short-term investments	66,000	1,000
Effects of changes in operating assets and liabilities:
Trade accounts receivable	(82,000)	(3,932,000)
Income tax receivable		262,000
Inventories	(4,036,000)	(5,702,000)
Prepaid expenses and other current assets	162,000	(1,186,000)
Prepaid income taxes	9,000	41,000
Accounts payable trade	601,000	1,437,000
Accrued expenses and other	(927,000)	505,000
Deferred revenue	198,000	512,000
Income tax payable	(11,000)	8,000
Net cash provided by (used in) operating activities	6,133,000	(12,073,000)
Cash flows from investing activities:
Purchase of property, plant and equipment	(1,426,000)	(1,005,000)
Proceeds from the sale of property, plant and equipment	130,000	200,000
Investment in rental equipment	(28,728,000)	(2,511,000)
Proceeds from the sale of used rental equipment	3,388,000	4,333,000
Purchases of short-term investments		(11,162,000)
Proceeds from the sale of short-term investments	25,606,000	20,163,000
Business acquisition	(1,819,000)
Payments for damages related to insurance claim	(650,000)	(1,970,000)
Proceeds from insurance claim	1,166,000	900,000
Increase in insurance claim receivable		849,000
Net cash used in (provided by) investing activities	(2,333,000)	9,797,000
Cash flows from financing activities:
Proceeds from the exercise of stock options	215,000	19,000
Net cash provided by financing activities	215,000	19,000
Effect of exchange rate changes on cash	(351,000)	(285,000)
Increase (decrease) in cash and cash equivalents	3,664,000	(2,542,000)
Cash and cash equivalents, beginning of fiscal year	11,934,000	15,092,000
Cash and cash equivalents, end of fiscal period	15,598,000	12,550,000
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest	85,000	285,000
Net cash paid (refunded) for income taxes	$ 1,249,000	$ (649,000)