Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Sep. 30, 2013
Current assets:
Cash and cash equivalents	$ 18,165	$ 16,104
Restricted cash	806	815
Accounts receivable, net of allowance of $96 and $3,363, respectively	43,196	41,826
Inventory	27,549	32,115
Prepaid expenses and other current assets	7,633	9,437
Total current assets	97,349	100,297
Property, plant, and equipment, net	46,048	49,744
Goodwill	20,384	20,384
Other intangible assets, net	1,396	2,159
Other non-current assets, net of allowance of $3,561 and $3,533, respectively	835	1,130
Total assets	166,012	173,714
Current liabilities:
Borrowings from credit facility	20,937	21,706
Accounts payable	21,185	19,643
Deferred gain associated with sale of assets	3,400	0
Warrant liability	116	155
Accrued expenses and other current liabilities	19,846	21,597
Total current liabilities	65,484	63,101
Asset retirement obligations	5,209	5,053
Deferred gain associated with sale of assets	0	3,400
Other long-term liabilities	806	981
Total liabilities	71,499	72,535
Commitments and contingencies (Note 12)
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; 30,749 shares issued and 30,709 shares outstanding as of June 30, 2014; 30,022 shares issued and 29,982 shares outstanding as of September 30, 2013	753,236	749,266
Treasury stock, at cost; 40 shares	(2,071)	(2,071)
Accumulated other comprehensive income	1,623	1,623
Accumulated deficit	(658,275)	(647,639)
Total shareholders’ equity	94,513	101,179
Total liabilities and shareholders’ equity	$ 166,012	$ 173,714