Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Current assets:
Cash and cash equivalents	$ 147,576	$ 20,687
Restricted cash	407	1,482
Accounts receivable, net of allowance of $275 and $116, respectively	15,316	12,769
Inventory	15,926	15,644
Deferred income taxes, net	0	3,908
Prepaid expenses and other current assets	9,372	5,336
Current assets of discontinued operations	12,927	44,065
Total current assets	201,524	103,891
Property, plant, and equipment, net	8,228	10,446
Other intangible assets, net	76	82
Deferred income taxes, net	0	20,172
Other non-current assets, net of allowance of $3,561 and $3,561, respectively	315	512
Non-current assets of discontinued operations	8,823	56,239
Total assets	218,966	191,342
Current liabilities:
Borrowings from credit facility	0	26,518
Accounts payable	9,444	6,804
Deferred gain associated with sale of assets	3,400	3,400
Warrant liability	86	122
Accrued expenses and other current liabilities	25,226	15,209
Current liabilities of discontinued operations	7,905	20,924
Total current liabilities	46,061	72,977
Asset retirement obligations	1,680	4,543
Other long-term liabilities	703	755
Non-current liabilities of discontinued operations	0	720
Total liabilities	48,444	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; 31,653 shares issued and 31,613 shares outstanding as of December 31, 2014; 31,149 shares issued and 31,109 shares outstanding as of September 30, 2014	758,126	755,368
Treasury stock, at cost; 40 shares	(2,071)	(2,071)
Accumulated other comprehensive income	1,126	1,837
Accumulated deficit	(586,659)	(642,787)
Total shareholders’ equity	170,522	112,347
Total liabilities and shareholders’ equity	$ 218,966	$ 191,342