Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 74,609	$ 71,621
Restricted cash	520	61
Accounts receivable, net of credit loss of $267 and $260, respectively	24,287	31,849
Contract assets	7,439	361
Inventory	29,206	32,309
Prepaid expenses and other current assets	6,471	6,877
Assets held for sale	480	1,241
Total current assets	143,012	144,319
Property, plant, and equipment, net	26,079	22,544
Goodwill	354	69
Operating lease right-of-use assets	20,938	13,489
Other intangible assets, net	1,548	167
Other non-current assets	1,592	225
Total assets	193,523	180,813
Current liabilities:
Accounts payable	13,335	16,686
Accrued expenses and other current liabilities	11,651	9,568
Contract liabilities	9,042	368
Operating lease liabilities - current	2,156	1,198
Total current liabilities	36,184	27,820
Operating lease liabilities - non-current	19,240	12,684
Asset retirement obligations	4,516	2,049
Other long-term liabilities	9	794
Total liabilities	59,949	43,347
Commitments and contingencies (Note 11)
Shareholders’ equity:
Common stock, no par value, 50,000 shares authorized; 44,449 shares issued and 37,543 shares outstanding as of June 30, 2022; 43,890 shares issued and 36,984 shares outstanding as of September 30, 2021	785,743	782,266
Treasury stock at cost; 6,906 shares as of June 30, 2022 and September 30, 2021	(47,721)	(47,721)
Accumulated other comprehensive income	778	687
Accumulated deficit	(605,226)	(597,766)
Total shareholders’ equity	133,574	137,466
Total liabilities and shareholders’ equity	$ 193,523	$ 180,813