CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 26,698	$ 23,675	$ 78,471	$ 98,561
Cost of revenue	23,198	19,777	68,201	69,849
Gross profit	3,500	3,898	10,270	28,712
Operating expense:
Selling, general, and administrative	6,452	7,800	26,347	22,550
Research and development	5,171	4,513	16,319	13,675
Severance	1,838	0	2,296	1,318
Gain on sale of assets	0	(1,318)	(1,147)	(1,919)
Total operating expense	13,461	10,995	43,815	35,624
Operating loss	(9,961)	(7,097)	(33,545)	(6,912)
Other income (expense):
Interest (expense) income, net	(219)	9	(682)	(14)
Foreign exchange gain (loss)	321	(185)	442	(160)
Other income (expense)	31	(349)	184	(349)
Total other income (expense)	133	(525)	(56)	(523)
Loss before income tax expense	(9,828)	(7,622)	(33,601)	(7,435)
Income tax expense	(29)	(27)	(177)	(25)
Net loss	(9,857)	(7,649)	(33,778)	(7,460)
Foreign exchange translation adjustment	(134)	69	(79)	91
Comprehensive loss	$ (9,991)	$ (7,580)	$ (33,857)	$ (7,369)
Per share data:
Net loss per basic share (in dollars per share)	$ (0.18)	$ (0.20)	$ (0.74)	$ (0.20)
Weighted-average number of basic shares outstanding (in shares)	53,926	37,425	45,546	37,197
Net loss per diluted share (in dollars per share)	$ (0.18)	$ (0.20)	$ (0.74)	$ (0.20)
Weighted-average number of diluted shares outstanding (in shares)	53,926	37,425	45,546	37,197