CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 23,692	$ 25,625
Restricted cash	495	520
Accounts receivable, net of credit loss of $361 and $337, respectively	17,116	18,073
Contract assets	5,570	4,560
Inventory	39,598	37,035
Prepaid expenses	3,374	4,061
Other current assets	2,148	3,063
Total current assets	91,993	92,937
Property, plant, and equipment, net	27,660	37,867
Goodwill	16,519	17,894
Operating lease right-of-use assets	27,937	23,243
Other intangible assets, net	15,234	14,790
Other non-current assets	2,425	2,351
Total assets	181,768	189,082
Current liabilities:
Accounts payable	12,545	12,729
Accrued expenses and other current liabilities	11,197	8,124
Contract liabilities	4,125	5,300
Loan payable - current	852	852
Operating lease liabilities - current	2,530	2,213
Total current liabilities	31,249	29,218
Line of credit	6,638	9,599
Loan payable - non-current	4,829	5,042
Operating lease liabilities - non-current	26,121	21,625
Asset retirement obligations	4,110	4,664
Other long-term liabilities	0	106
Total liabilities	72,947	70,254
Commitments and contingencies (Note 13)
Shareholders’ equity:
Common stock, no par value, 100,000 shares authorized; 44,774 shares issued and 37,868 shares outstanding as of December 31, 2022; 44,497 shares issued and 37,591 shares outstanding as of September 30, 2022	789,080	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	1,254	1,301
Accumulated deficit	(633,792)	(622,099)
Total shareholders’ equity	108,821	118,828
Total liabilities and shareholders’ equity	$ 181,768	$ 189,082