CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities
Net income (loss)	$ 31,260	$ (8,162)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	17,252	18,258
Impairment of intangible assets	398	0
Impairment of other assets	2,621	0
Stock-based compensation	8,774	5,625
Amortization of premium on marketable securities	896	972
Undistributed earnings of equity method investments	(1,330)	(220)
Deferred income tax provision (benefit)	1,115	(364)
Pension settlement	0	87
Gain on disposal of businesses	(27,444)	0
Loss on disposal of long-lived assets	52	375
Changes in operating assets and liabilities, net of acquisitions and disposals:
Accounts receivable	10,416	(3,508)
Inventories	1,150	17,334
Prepaid expenses and other current assets	(3,612)	(1,585)
Accounts payable	(15,712)	(758)
Deferred revenue	13,243	6,351
Accrued warranty and retrofit costs	(820)	(1,194)
Accrued compensation and benefits	5,484	(211)
Accrued restructuring costs	2,542	(579)
Accrued expenses and other current liabilities	(5,947)	(2,784)
Net cash provided by operating activities	40,338	29,637
Cash flows from investing activities
Purchases of property, plant and equipment	(3,384)	(2,710)
Purchases of marketable securities	(128,135)	(72,581)
Sale/maturity of marketable securities	89,579	127,582
Proceeds from divestitures	85,369	0
Acquisition, net of cash acquired	(37,832)	(59,005)
Proceeds from the sale of property, plant and equipment	0	3,169
Payment of deferred leasing cost	0	(3,134)
Decrease in restricted cash	177	763
Net cash provided by (used in) investing activities	5,774	(5,916)
Cash flows from financing activities
Proceeds from issuance of common stock, net of issuance costs	967	969
Common stock dividend paid	(16,144)	(15,987)
Net cash used in financing activities	(15,177)	(15,018)
Effects of exchange rate changes on cash and cash equivalents	1,641	(1,454)
Net increase (decrease) in cash and cash equivalents	32,576	7,249
Cash and cash equivalents, beginning of period	82,971	54,639
Cash and cash equivalents, end of period	115,547
Supplemental disclosure of non-cash investing and financing activities:
Acquisition of buildings and land through capital lease	$ 8,537	$ 0