Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 16,104	$ 9,047
Restricted cash	815	82
Accounts receivable, net of allowance of $3,363 and $3,279, respectively	41,826	36,939
Inventory	32,115	35,192
Prepaid expenses and other current assets	9,437	14,146
Total current assets	100,297	95,406
Property, plant, and equipment, net	49,744	47,896
Goodwill	20,384	20,384
Other intangible assets, net	2,159	3,428
Other non-current assets, net of allowance of $3,533 and $3,419, respectively	1,130	2,752
Total assets	173,714	169,866
Current liabilities:
Borrowings from credit facility	21,706	19,316
Accounts payable	19,643	38,814
Warrant liability	155	670
Accrued expenses and other current liabilities	21,597	32,635
Total current liabilities	63,101	91,435
Asset retirement obligations	5,053	5,004
Deferred gain associated with sale of assets	3,400	3,400
Other long-term liabilities	981	1,004
Total liabilities	72,535	100,843
Commitments and contingencies (Note 14)
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; 30,022 shares issued and 29,982 shares outstanding as of September 30, 2013; 24,412 shares issued and 24,372 shares outstanding as of September 30, 2012	749,266	722,345
Treasury stock, at cost; 40 shares	(2,071)	(2,071)
Accumulated other comprehensive income	1,623	1,376
Accumulated deficit	(647,639)	(652,627)
Total shareholders’ equity	101,179	69,023
Total liabilities and shareholders’ equity	$ 173,714	$ 169,866