Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Current assets:
Cash and cash equivalents	$ 140,965	$ 20,687
Restricted cash	168	1,482
Accounts receivable, net of allowance of $413 and $116, respectively	17,110	12,769
Inventory	15,501	15,644
Deferred income taxes, net	0	3,908
Prepaid expenses and other current assets	6,236	5,336
Current assets of discontinued operations	0	44,065
Total current assets	179,980	103,891
Property, plant, and equipment, net	7,976	10,446
Other intangible assets, net	70	82
Note receivable	15,482	0
Deferred income taxes, net	0	20,172
Other non-current assets, net of allowance of $3,561 and $3,561, respectively	320	512
Non-current assets of discontinued operations	0	56,239
Total assets	203,828	191,342
Current liabilities:
Borrowings from credit facility	0	26,518
Accounts payable	6,819	6,804
Deferred gain associated with sale of assets	3,400	3,400
Warrant liability	0	122
Accrued expenses and other current liabilities	15,976	15,209
Current liabilities of discontinued operations	0	20,924
Total current liabilities	26,195	72,977
Asset retirement obligations	1,731	4,543
Other long-term liabilities	415	755
Non-current liabilities of discontinued operations	0	720
Total liabilities	28,341	78,995
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; 32,303 shares issued and 32,263 shares outstanding as of March 31, 2015; 31,149 shares issued and 31,109 shares outstanding as of September 30, 2014	760,047	755,368
Treasury stock, at cost; 40 shares	(2,071)	(2,071)
Accumulated other comprehensive income	1,118	1,837
Accumulated deficit	(583,607)	(642,787)
Total shareholders’ equity	175,487	112,347
Total liabilities and shareholders’ equity	$ 203,828	$ 191,342