CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ (19,191)	$ 38,744
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred income tax benefit	(3,458)	(730)
Depreciation	14,777	13,125
Accretion of discounts on short-term-investments	174	3
Stock-based compensation	3,434	3,026
Bad debt expense	1,130	658
Inventory obsolescence expense	2,566	2,176
Gross profit from the sale of used rental equipment	(1,658)	(10,309)
Gain on disposal of property, plant and equipment	(2)	(60)
Excess tax expense from stock-based compensation	(1,065)
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivable	7,314	25,081
Income tax receivable	(6,829)
Inventories	5,274	(6,738)
Costs and estimated earnings in excess of billings		12,400
Prepaid expenses and other current assets	2,832	78
Prepaid income taxes	1,333	(109)
Accounts payable	(1,827)	(12,036)
Accrued expenses and other	(8,127)	(255)
Deferred revenue	(3,412)	2,987
Income taxes payable	(19)	3,033
Net cash provided by (used in) operating activities	(6,754)	71,074
Cash flows from investing activities:
Purchase of property, plant and equipment	(2,046)	(5,650)
Investment in rental equipment	(3,784)	(25,726)
Proceeds from sale of used rental equipment	4,547	16,019
Proceeds from sale of property, plant and equipment		27
Purchases of short-term investments	(4,281)	(5,867)
Proceeds from the sale of short-term investments	4,415
Net cash used in investing activities	(1,149)	(21,197)
Cash flows from financing activities:
Principal payments on debt arrangements		(931)
Excess tax benefit from stock-based compensation		674
Proceeds from exercise of stock options		265
Net cash provided by financing activities		8
Effect of exchange rate changes on cash	152	(3)
Increase (decrease) in cash and cash equivalents	(7,751)	49,882
Cash and cash equivalents, beginning of period	33,357	2,726
Cash and cash equivalents, end of period	$ 25,606	$ 52,608