CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net loss	$ (5,853,000)	$ (9,480,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Deferred income tax benefit	(61,000)	(55,000)
Rental equipment depreciation	2,711,000	2,247,000
Property, plant and equipment depreciation	919,000	1,095,000
Amortization of intangible assets	362,000	0
Accretion of discounts on short-term investments	(7,000)	13,000
Stock-based compensation expense	602,000	826,000
Bad debt expense (recovery)	(103,000)	350,000
Inventory obsolescence expense	1,428,000	1,434,000
Gross profit from sale of used rental equipment		(2,566,000)
Realized loss on short-term investments	59,000
Effects of changes in operating assets and liabilities:
Trade accounts receivable	1,824,000	2,562,000
Income tax receivable		10,000
Inventories	(6,302,000)	(2,865,000)
Prepaid expenses and other current assets	(1,472,000)	(329,000)
Prepaid income taxes	(12,000)	41,000
Accounts payable trade	4,240,000	723,000
Accrued expenses and other	2,008,000	267,000
Deferred revenue	879,000	(65,000)
Income tax payable	50,000
Net cash provided by (used in) operating activities	1,272,000	(5,792,000)
Cash flows from investing activities:
Purchase of property, plant and equipment	(717,000)	(218,000)
Investment in rental equipment	(10,164,000)
Proceeds from the sale of used rental equipment	728,000	997,000
Purchases of short-term investments		(1,905,000)
Proceeds from the sale of short-term investments	16,081,000	5,898,000
Business acquisition	(1,819,000)
Payments for damages related to insurance claim	(118,000)
Proceeds from insurance claim	78,000
Net cash provided by investing activities	4,069,000	4,772,000
Cash flows from financing activities:
Proceeds from the exercise of stock options	215,000
Net cash provided by financing activities	215,000
Effect of exchange rate changes on cash	(379,000)	(149,000)
Increase (decrease) in cash and cash equivalents	5,177,000	(1,169,000)
Cash and cash equivalents, beginning of fiscal year	11,934,000	15,092,000
Cash and cash equivalents, end of fiscal period	$ 17,111,000	$ 13,923,000