Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net (loss) income	$ (2,054)	$ 2,826
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation, amortization, and accretion expense	2,068	2,018
Stock-based compensation expense	1,135	1,082
Gain on sale of an investment	(290)	0
Provision adjustments related to doubtful accounts	(35)	0
Provision adjustments related to product warranty	265	629
Change in fair value of financial instruments	78	(237)
Non-cash insurance proceeds	0	(4,192)
Total non-cash adjustments	3,221	(700)
Changes in operating assets and liabilities:
Accounts receivable	5,950	180
Inventory	135	(2,133)
Other assets	981	3,197
Accounts payable	(1,652)	(6,581)
Accrued expenses and other current liabilities	144	(1,308)
Total change in operating assets and liabilities	5,558	(6,645)
Net cash provided from (used in) operating activities	6,725	(4,519)
Cash flows from investing activities:
Cash proceeds from sale of investment	290	0
Purchase of equipment	(684)	(2,030)
Deposits on equipment orders	0	(3)
Decrease (increase) in restricted cash	262	(945)
Proceeds from disposal of property, plant and equipment	0	203
Net cash used in investing activities	(132)	(2,775)
Cash flows from financing activities:
Net (payments) proceeds from borrowings from credit facilities	(4,506)	611
Proceeds from sale of common stock	0	9,475
Proceeds from stock plans	14	10
Net cash (used in) provided by financing activities	(4,492)	10,096
Effect of exchange rate changes on foreign currency	(61)	34
Net increase in cash and cash equivalents	2,040	2,836
Cash and cash equivalents at beginning of period	16,104	9,047
Cash and cash equivalents at end of period	18,144	11,883
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid during the period for interest	112	196
Cash paid during the period for income taxes	4	15
NON-CASH INVESTING AND FINANCING ACTIVITIES
Forgiveness of capital lease and accounts payable	0	4,192
Acquisition of equipment under capital lease	$ 0	$ 257