CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (37,584)	$ (33,661)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Deferred income tax (benefit) expense	(25)	4,211
Rental equipment depreciation	9,858	11,189
Property, plant and equipment depreciation	3,930	4,017
Impairment of rental assets		998
Accretion of discounts on short-term investments	45	89
Stock-based compensation expense	4,289	3,934
Bad debt recovery	(402)	(74)
Inventory obsolescence expense	12,111	7,031
Gross profit from sale of used rental equipment	(2,650)	(229)
Realized loss on short-term investments	2	4
Excess tax expense from stock-based compensation		(1,390)
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivable	8,871	72
Income tax receivable	12,847	6,858
Inventories	1,208	3,066
Prepaid expenses and other current assets	459	(4,435)
Prepaid income taxes	1,156	1,097
Accounts payable trade	(77)	(1,844)
Accrued expenses and other	(2,033)	(2,062)
Deferred revenue	119	(74)
Income tax payable	(117)	109
Net cash provided by (used in) operating activities	12,007	(1,094)
Cash flows from investing activities:
Purchase of property, plant and equipment	(588)	(1,206)
Investment in rental equipment	(299)	(504)
Proceeds from the sale of used rental equipment	4,424	1,280
Purchases of short-term investments	(16,042)	(20,800)
Proceeds from the sale of short-term investments	6,991	11,679
Net cash used in investing activities	(5,514)	(9,551)
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	272	(143)
Increase (decrease) in cash and cash equivalents	6,815	(10,788)
Cash and cash equivalents, beginning of fiscal year	10,262	22,314
Cash and cash equivalents, end of fiscal period	$ 17,077	$ 11,526