Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Cash flows from operating activities:
Net Loss	$ (34,219)	$ (23,694)	$ (138,801)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Impairments	8,000	0	60,781
Depreciation and amortization expense	11,973	12,288	16,082
Stock-based compensation expense	7,428	9,860	8,054
Provision for doubtful accounts	30	2,238	5,065
Provision for product warranty	970	1,220	2,578
Provision for losses on firm commitments	0	185	8,515
Loss from equity method investment	1,842	0	0
Change in fair value of financial instruments	(70)	475	0
Cost of financing instruments	0	322	0
Impairment of investment	0	0	367
Loss on disposal of equipment	238	89	367
Gain from the sale of an unconcolidated affiliate	0	0	(3,144)
Total non-cash adjustments	30,411	26,677	98,665
Changes in operating assets and liabilities:
Accounts receivable	3,278	(3,309)	15,967
Inventory	(883)	(361)	32,957
Other assets	(2,519)	(904)	1,582
Accounts payable	404	1,229	(27,428)
Accrued expenses and other current liabilities	(2,761)	3,773	(12,504)
Total change in operating assets and liabilities	(2,481)	428	10,574
Net cash provided by (used in) operating activities	(6,289)	3,411	(29,562)
Cash flows from investing activities:
Purchase of equipment	(7,334)	(1,403)	(1,323)
Deposits on equipment orders	(1,030)	0	0
Proceeds from disposal of equipment	0	0	106
Investment in internally-developed patents	(425)	(649)	0
Proceeds from the sale of available-for-sale securities	0	1,350	2,729
Investments in an unconsolidated affiliate	(12,000)	0	0
Consulting fees received related to unconsolidated affiliate	5,500	0	0
Purchase of a business	(750)	0	0
Procceds from the sale of an unconsolidated affiliate	0	0	11,017
Release of restricted cash	753	386	738
Net cash provided by (used in) investing activities	(15,286)	(316)	13,267
Cash flows from financing activities:
Net proceeds from borrowings from credit facilities	6,984	241	10,332
Net proceeds (payments) on short-term debt	0	(842)	842
Net proceeds from private placement transaction	9,653	0	0
Net proceeds from equity line financing facility	0	1,980	0
Proceeds from stock plans	1,855	991	926
Payments on capital lease obligations	(605)	(5)	0
Net cash provided by financing activities	17,887	2,365	12,100
Effect of exchange rate changes on foreign currency	(658)	456	(4)
Net increase (decrease) in cash and cash equivalents	(4,346)	5,916	(4,199)
Cash and cash equivalents at beginning of period	19,944	14,028	18,227
Cash and cash equivalents at end of period	15,598	19,944	14,028
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid during the period for interest	895	308	582
Cash paid during the period for income taxes	0	0	0
NON-CASH INVESTING AND FINANCING ACTIVITIES
Issuance of common stock under equity line financing facility	196	228	0
Prior consulting fees received related to unconsolidated affiliate	3,000	0	0
Acquisition of equipment under capital lease	1,879	0	46
Issuance of common stock for purchase of assets acquired from Intel Corporation	$ 0	$ 0	$ 1,183