CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 24,348	$ 25,625
Restricted cash	495	520
Accounts receivable, net of credit loss of $396 and $337, respectively	22,579	18,073
Contract assets	7,414	4,560
Inventory	40,086	37,035
Prepaid expenses	3,734	4,061
Other current assets	2,074	3,063
Total current assets	100,730	92,937
Property, plant, and equipment, net	26,325	37,867
Goodwill	16,422	17,894
Operating lease right-of-use assets	27,239	23,243
Other intangible assets, net	14,947	14,790
Other non-current assets	2,408	2,351
Total assets	188,071	189,082
Current liabilities:
Accounts payable	14,141	12,729
Accrued expenses and other current liabilities	11,877	8,124
Contract liabilities	4,247	5,300
Loan payable - current	852	852
Operating lease liabilities - current	2,647	2,213
Total current liabilities	33,764	29,218
Line of credit	6,553	9,599
Loan payable - non-current	4,616	5,042
Operating lease liabilities - non-current	25,434	21,625
Asset retirement obligations	4,091	4,664
Other long-term liabilities	8	106
Total liabilities	74,466	70,254
Commitments and contingencies (Note 13)
Shareholders’ equity:
Common stock, no par value, 100,000 shares authorized; 60,790 shares issued and 53,884 shares outstanding as of March 31, 2023; 44,497 shares issued and 37,591 shares outstanding as of September 30, 2022	806,100	787,347
Treasury stock at cost; 6,906 shares as of December 31, 2022 and September 30, 2022	(47,721)	(47,721)
Accumulated other comprehensive income	1,246	1,301
Accumulated deficit	(646,020)	(622,099)
Total shareholders’ equity	113,605	118,828
Total liabilities and shareholders’ equity	$ 188,071	$ 189,082