Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
Current assets:
Cash and cash equivalents	$ 15,356	$ 21,574
Restricted cash	30	403
Accounts receivable, net of allowance of $258 and $148, respectively	19,279	18,497
Contract assets	1,625	1,055
Inventory	25,095	24,051
Prepaid expenses and other current assets	4,984	6,389
Assets held for sale	1,678	0
Total current assets	68,047	71,969
Property, plant, and equipment, net	33,996	37,223
Goodwill	69	69
Operating lease right-of-use assets	4,586	0
Other intangible assets, net	229	239
Other non-current assets	62	62
Total assets	106,989	109,562
Current liabilities:
Borrowings from credit facility	4,459	5,497
Accounts payable	10,796	10,701
Accrued expenses and other current liabilities	8,929	14,521
Operating lease liabilities - current	823	0
Total current liabilities	25,007	30,719
Operating lease liabilities - non-current	3,882	0
Asset retirement obligations	1,898	1,890
Other long-term liabilities	73	207
Total liabilities	30,860	32,816
Commitments and contingencies (Note 13)
Shareholders’ equity:
Common stock, no par value, 50,000 shares authorized; 35,858 shares issued and 28,948 shares outstanding as of December 31, 2019; 35,803 shares issued and 28,893 shares outstanding as of September 30, 2019	740,680	739,926
Treasury stock at cost; 6,910 shares	(47,721)	(47,721)
Accumulated other comprehensive income	914	950
Accumulated deficit	(617,744)	(616,409)
Total shareholders’ equity	76,129	76,746
Total liabilities and shareholders’ equity	$ 106,989	$ 109,562