Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 5,914	$ 9,047
Restricted cash	702	82
Accounts receivable, net of allowance of $3,378 at June 30, 2013 and $3,279 at September 30, 2012	39,289	36,939
Inventory	36,391	35,192
Prepaid expenses and other current assets	11,222	14,146
Total current assets	93,518	95,406
Property, plant, and equipment, net	50,665	47,896
Goodwill	20,384	20,384
Other intangible assets, net	2,476	3,428
Equity method investment	0
Other non-current assets, net of allowance of $3,445 at June 30, 2013 and $3,419 at September 30, 2012	1,067	2,752
Total assets	168,110	169,866
Current liabilities:
Borrowings from credit facility	20,061	19,316
Accounts payable	22,460	38,814
Warrant liability	327	670
Accrued expenses and other current liabilities	26,010	32,635
Total current liabilities	68,858	91,435
Asset retirement obligations	5,129	5,004
Deferred gain associated with sale of assets	3,400	3,400
Other long-term liabilities	693	1,004
Total liabilities	78,080	100,843
Commitments and contingencies (Note 11)
Shareholders’ equity:
Preferred stock, $0.0001 par value, 5,882 shares authorized; none issued or outstanding	0	0
Common stock, no par value, 50,000 shares authorized; 26,801 shares issued and 26,761 shares outstanding as of June 30, 2013; 24,412 shares issued and 24,372 shares outstanding as of September 30, 2012	735,982	722,345
Treasury stock, at cost; 40 shares	(2,071)	(2,071)
Accumulated other comprehensive income	1,506	1,376
Accumulated deficit	(645,387)	(652,627)
Total shareholders’ equity	90,030	69,023
Total liabilities and shareholders’ equity	$ 168,110	$ 169,866