CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Current assets
Cash and cash equivalents	$ 77,759	$ 94,114
Marketable securities	58,648	68,130
Accounts receivable, net	75,675	80,106
Inventories	94,936	93,567
Deferred tax assets	17,367	19,009
Prepaid expenses and other current assets	15,166	19,387
Total current assets	339,551	374,313
Property, plant and equipment, net	47,918	50,183
Long-term marketable securities	82,288	83,212
Long-term deferred tax assets	73,120	67,563
Goodwill	117,652	109,501
Intangible assets, net	62,722	59,550
Equity method investments	27,197	28,944
Other assets	6,699	4,772
Total assets	757,147	778,038
Current liabilities
Accounts payable	37,674	33,740
Capital lease obligation	881	881
Deferred revenue	25,657	26,279
Accrued warranty and retrofit costs	6,255	6,499
Accrued compensation and benefits	12,353	21,663
Accrued restructuring costs	3,928	3,475
Accrued income taxes payable	2,966	1,808
Deferred tax liabilities	847	808
Accrued expenses and other current liabilities	14,094	18,688
Total current liabilities	104,655	113,841
Long-term capital lease obligation	7,296	7,417
Long-term tax reserves	5,293	5,708
Long-term deferred tax liabilities	3,941	2,567
Long-term pension liability	1,715	1,774
Other long-term liabilities	3,633	3,842
Total liabilities	126,533	135,149
Commitments and contingencies (Note 18)
Equity
Preferred stock, $0.01 par value, 1,000,000 shares authorized, no shares issued or outstanding	0	0
Common stock, $0.01 par value, 125,000,000 shares authorized, 80,775,926 shares issued and 67,314,057 shares outstanding at December 31, 2014, 80,375,777 shares issued and 66,913,908 shares outstanding at September 30, 2014	808	804
Additional paid-in capital	1,835,998	1,834,619
Accumulated other comprehensive income	11,502	15,687
Treasury stock at cost, 13,461,869 shares	(200,956)	(200,956)
Accumulated deficit	(1,016,738)	(1,007,265)
Total equity	630,614	642,889
Total liabilities and equity	$ 757,147	$ 778,038