CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income (loss)	$ (5,146,000)	$ (14,209,000)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Deferred income tax benefit	(14,000)	(40,000)
Rental equipment depreciation	6,121,000	4,519,000
Property, plant and equipment depreciation	2,003,000	2,105,000
Amortization of intangible assets	795,000	0
Accretion of discounts on short-term investments	(9,000)	24,000
Stock-based compensation expense	1,194,000	1,344,000
Bad debt expense (recovery)	(30,000)	356,000
Inventory obsolescence expense	2,401,000	3,297,000
Gross profit from sale of used rental equipment	(200,000)	(4,187,000)
Gain on disposal of property, plant and equipment		(25,000)
Realized loss on short-term investments	67,000	1,000
Effects of changes in operating assets and liabilities:
Trade accounts receivable	(5,806,000)	(2,943,000)
Income tax receivable		(701,000)
Inventories	(3,695,000)	(4,613,000)
Prepaid expenses and other current assets	(998,000)	179,000
Prepaid income taxes	(23,000)	49,000
Accounts payable trade	3,018,000	2,320,000
Accrued expenses and other	(1,218,000)	89,000
Deferred revenue	(1,349,000)	60,000
Income tax payable	(15,000)
Net cash used in operating activities	(2,904,000)	(12,375,000)
Cash flows from investing activities:
Purchase of property, plant and equipment	(962,000)	(495,000)
Proceeds from the sale of property, plant and equipment		200,000
Investment in rental equipment	(20,420,000)	(1,643,000)
Proceeds from the sale of used rental equipment	1,646,000	3,904,000
Purchases of short-term investments		(3,755,000)
Proceeds from the sale of short-term investments	24,856,000	13,321,000
Business acquisition	(1,819,000)
Payments for damages related to insurance claim	(616,000)
Proceeds from insurance claim	1,166,000
Net cash provided by investing activities	3,851,000	11,532,000
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	(331,000)	(89,000)
Increase (decrease) in cash and cash equivalents	831,000	(913,000)
Cash and cash equivalents, beginning of fiscal year	11,934,000	15,092,000
Cash and cash equivalents, end of fiscal period	$ 12,765,000	$ 14,179,000