Condensed 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 (loss) income	$ (10,636)	$ 7,240
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation, amortization, and accretion expense	6,336	6,161
Stock-based compensation expense	3,419	3,285
Gain on sale of an investment	(307)	0
Provision adjustments related to doubtful accounts	232	(65)
Provision adjustments related to product warranty	1,851	2,615
Change in fair value of financial instruments	(39)	(343)
Non-cash insurance proceeds	0	(16,134)
Total non-cash adjustments	11,492	(4,481)
Changes in operating assets and liabilities:
Accounts receivable	(1,602)	(2,256)
Inventory	4,016	(1,369)
Other assets	2,119	4,403
Accounts payable	1,539	(11,202)
Accrued expenses and other current liabilities	(3,328)	(5,058)
Total change in operating assets and liabilities	2,744	(15,482)
Net cash provided by (used in) operating activities	3,600	(12,723)
Cash flows from investing activities:
Cash proceeds from sale of investment	307
Purchase of equipment	(1,739)	(6,753)
Deposits on equipment orders	0	(3)
Flood-related insurance proceeds from equipment	0	5,373
Decrease (increase) in restricted cash	9	(619)
Proceeds from disposal of property, plant and equipment	0	397
Net cash used in investing activities	(1,423)	(1,605)
Cash flows from financing activities:
Net (payments) proceeds from borrowings from credit facilities	(769)	745
Proceeds from sale of common stock	0	9,475
Proceeds from stock plans	664	1,018
Net cash (used in) provided by financing activities	(105)	11,238
Effect of exchange rate changes on foreign currency	(11)	(43)
Net increase (decrease) in cash and cash equivalents	2,061	(3,133)
Cash and cash equivalents at beginning of period	16,104	9,047
Cash and cash equivalents at end of period	18,165	5,914
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid during the period for interest	336	536
Cash paid during the period for income taxes	0	15
NON-CASH INVESTING AND FINANCING ACTIVITIES
Forgiveness of capital lease and accounts payable	$ 0	$ 10,761