Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ 14,523	$ (23,564)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation, amortization, and accretion expense	4,062	5,152
Stock-based compensation expense	2,133	4,722
Provision adjustments related to doubtful accounts	15	(87)
Provision adjustments related to product warranty	2,401	86
Provision for losses on inventory purchase commitments	0	1,343
Loss from equity method investment	0	1,201
Change in fair value of financial instruments	30	151
Net loss on disposal of equipment	0	(3)
Flood-related loss	0	5,812
Non-cash insurance proceeds	19,000	0
Total non-cash adjustments	(10,359)	18,377
Changes in operating assets and liabilities:
Accounts receivable	(2,628)	7,109
Inventory	(600)	(7,829)
Other assets	2,448	115
Accounts payable	(9,176)	8,191
Accrued expenses and other current liabilities	(4,406)	8,556
Total change in operating assets and liabilities	(14,362)	16,142
Net cash (used in) provided by operating activities	(10,198)	10,955
Cash flows from investing activities:
Purchase of equipment	(4,961)	(5,533)
Deposits on equipment orders	(3)	(1,981)
Dividend from an unconsolidated affiliate	0	1,644
Increase in restricted cash	(248)	(697)
Proceeds from disposal of property, plant and equipment	396	0
Net cash used in investing activities	(4,816)	(6,567)
Cash flows from financing activities:
Net proceeds from borrowings from credit facilities	1,463	3,443
Proceeds from sale of common stock	9,475	0
Proceeds from stock plans	1,006	652
Net cash provided by financing activities	11,944	4,095
Effect of exchange rate changes on foreign currency	(55)	31
Net (decrease) increase in cash and cash equivalents	(3,125)	8,514
Cash and cash equivalents at beginning of period	9,047	15,598
Cash and cash equivalents at end of period	5,922	24,112
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid during the period for interest	370	252
Cash paid during the period for income taxes	15	1,644
NON-CASH INVESTING AND FINANCING ACTIVITIES
Forgiveness of capital lease and accounts payable	10,761	0
Note Receivable from contract manufacturer	$ 8,239	$ 0