CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 19,717	$ 25,625
Restricted cash	495	520
Accounts receivable, net of credit loss of $363 and $337, respectively	17,451	18,073
Contract assets	5,163	4,560
Inventory	35,833	37,035
Prepaid expenses	3,378	4,061
Other current assets	2,431	3,063
Total current assets	84,468	92,937
Property, plant, and equipment, net	24,388	37,867
Goodwill	19,043	17,894
Operating lease right-of-use assets	26,534	23,243
Other intangible assets, net	15,294	14,790
Other non-current assets	2,326	2,351
Total assets	172,053	189,082
Current liabilities:
Accounts payable	11,164	12,729
Accrued expenses and other current liabilities	10,775	8,124
Contract liabilities	1,359	5,300
Loan payable - current	852	852
Operating lease liabilities - current	2,740	2,213
Total current liabilities	26,890	29,218
Line of credit	6,485	9,599
Loan payable - non-current	4,403	5,042
Operating lease liabilities - non-current	24,737	21,625
Asset retirement obligations	4,143	4,664
Other long-term liabilities	8	106
Total liabilities	66,666	70,254
Commitments and contingencies (Note 13)
Shareholders’ equity:
Common stock, no par value, 100,000 shares authorized; 61,059 shares issued and 54,153 shares outstanding as of June 30, 2023; 44,497 shares issued and 37,591 shares outstanding as of September 30, 2022	807,605	787,347
Treasury stock at cost; 6,906 shares as of June 30, 2023 and September 30, 2022	(47,721)	(47,721)
Accumulated other comprehensive income	1,380	1,301
Accumulated deficit	(655,877)	(622,099)
Total shareholders’ equity	105,387	118,828
Total liabilities and shareholders’ equity	$ 172,053	$ 189,082