Consolidated Balance Sheets - USD ($)	Sep. 30, 2019	Sep. 30, 2018
Current assets:
Cash and cash equivalents	$ 21,574,000	$ 63,117,000
Restricted cash	403,000	78,000
Accounts receivable, net of allowance of $148 and $548, respectively	18,497,000	19,275,000
Contract assets	1,055,000	0
Inventory	24,051,000	20,850,000
Prepaid expenses and other current assets	6,389,000	6,098,000
Total current assets	71,969,000	109,418,000
Property, plant, and equipment, net	37,223,000	18,216,000
Goodwill	69,000	0
Intangible assets, net	239,000	0
Non-current inventory	0	1,433,000
Other non-current assets	62,000	199,000
Total assets	109,562,000	129,266,000
Current liabilities:
Borrowings from credit facility	5,497,000	0
Accounts payable	10,701,000	12,997,000
Accrued expenses and other current liabilities	14,521,000	7,573,000
Total current liabilities	30,719,000	20,570,000
Asset retirement obligations	1,890,000	1,809,000
Other long-term liabilities	207,000	82,000
Total liabilities	32,816,000	22,461,000
Commitments and contingencies (Note 13)
Shareholders’ equity:
Common stock, no par value, 50,000 shares authorized; 35,803 shares issued and 28,893 shares outstanding as of September 30, 2019; 34,487 shares issued and 27,577 shares outstanding as of September 30, 2018	739,926,000	734,066,000
Treasury stock at cost; 6,910 shares	(47,721,000)	(47,721,000)
Accumulated other comprehensive income	950,000	885,000
Accumulated deficit	(616,409,000)	(580,425,000)
Total shareholders’ equity	76,746,000	106,805,000
Total liabilities and shareholders’ equity	$ 109,562,000	$ 129,266,000