CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net loss	$ (22,007)	$ (10,627)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Deferred income expense (benefit)	2,786	(2,338)
Depreciation expense	10,335	10,096
Accretion of discounts on short-term-investments	70	114
Stock-based compensation expense	2,660	2,327
Bad debt expense (recovery)	(623)	1,018
Inventory obsolescence expense	4,201	1,662
Write-down of inventories	617
Gross loss (profit) from sale of used rental equipment	60	(1,349)
Gain on disposal of property, plant and equipment		(2)
Realized loss on short-term investments	3
Excess tax expense from stock-based compensation	(1,390)	(1,065)
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivable	4,599	3,559
Income tax receivable	9,918	(6,287)
Inventories	2,212	3,303
Prepaid expenses and other current assets	(2,608)	4,645
Prepaid income taxes	712	900
Accounts payable trade	(2,567)	(2,064)
Accrued expenses and other	(4,534)	(11,503)
Deferred revenue	(110)	(3,197)
Income taxes payable	73	255
Net cash provided by (used in) operating activities	4,407	(10,553)
Cash flows from investing activities:
Purchase of property, plant and equipment	(822)	(1,418)
Investment in rental equipment	(468)	(1,799)
Proceeds from the sale of used rental equipment	197	3,570
Purchases of short-term investments	(5,602)	(1,875)
Proceeds from the sale of short-term investments	8,753	1,715
Net cash provided by investing activities	2,058	193
Effect of exchange rate changes on cash	(341)	516
Increase (decrease) in cash and cash equivalents	6,124	(9,844)
Cash and cash equivalents, beginning of fiscal year	22,314	33,357
Cash and cash equivalents, end of fiscal period	$ 28,438	$ 23,513