CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (11,705)	$ (11,042)
Adjustments to reconcile net loss to net cash used in operating activities:
Deferred income tax expense	34	4,926
Rental equipment depreciation	3,308	3,430
Property, plant and equipment depreciation	1,313	1,380
Accretion of discounts on short-term-investments	16	44
Stock-based compensation expense	1,375	1,185
Bad debt recovery	(482)	(889)
Inventory obsolescence expense	4,147	2,294
Gross profit from sale of used rental equipment	(1,201)	(4)
Realized loss on short-term investments	1	1
Excess tax expense from stock-based compensation		(1,313)
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivable	2,312	6,708
Income tax receivable		(7,883)
Inventories	(1,507)	2,078
Prepaid expenses and other current assets	(39)	(717)
Prepaid income taxes	393	398
Accounts payable trade	(348)	(1,975)
Accrued expenses and other	(257)	(901)
Deferred revenue	771	(99)
Income tax payable	(31)	19
Net cash used in operating activities	(1,900)	(2,360)
Cash flows from investing activities:
Purchase of property, plant and equipment	(106)	(679)
Investment in rental equipment		(135)
Proceeds from the sale of used rental equipment	1,915	35
Purchases of short-term investments		(4,902)
Proceeds from the sale of short-term investments	2,674	3,370
Net cash provided by (used in) investing activities	4,483	(2,311)
Cash flows from financing activities:
Proceeds from the exercise of stock options	50
Net cash provided by financing activities	50
Effect of exchange rate changes on cash	(101)	(218)
Increase (decrease) in cash and cash equivalents	2,532	(4,889)
Cash and cash equivalents, beginning of fiscal year	10,262	22,314
Cash and cash equivalents, end of fiscal period	$ 12,794	$ 17,425