CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net loss	$ (14,174)	$ (23,921)
Less: Loss from discontinued operations, net of tax	(2,036)	(6,383)
Loss from continuing operations, net of tax	(12,138)	(17,538)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	3,167	3,817
Stock-based compensation expense	1,261	3,269
Provision adjustment related to credit loss	0	184
Provision adjustment related to product warranty	(221)	83
Loss (gain) on sale of assets	(31)	(1,147)
Impairment charge	(88)	0
Other	0	(159)
Total non-cash adjustments	4,088	6,047
Changes in operating assets and liabilities:
Accounts receivable and contract assets, net	1,978	(2,387)
Inventory	(3,219)	(3,152)
Other assets	1,438	(8,850)
Accounts payable	(1,068)	2,148
Contract liabilities	(351)	(744)
Operating lease liabilities - current	142	(1,024)
Accrued expenses and other liabilities	(612)	433
Total change in operating assets and liabilities	(1,692)	(13,576)
Net cash used in operating activities - continuing operations	(9,742)	(25,067)
Net cash (used in) provided by operating activities - discontinued operations	(2,949)	2,278
Net cash used in operating activities	(12,691)	(22,789)
Cash flows from investing activities:
Purchase of property, plant, and equipment	(292)	(1,531)
Proceeds from disposal of property, plant, and equipment	31	10,915
Proceeds from deposit on disposition of assets held for sale	1,000	0
Acquisition of assets, net of cash	0	96
Net cash provided by investing activities	739	9,480
Cash flows from financing activities:
Payments towards financing arrangement	(460)	0
Proceeds from borrowings from line of credit	0	392
Payments towards line of credit	(1,836)	(3,438)
Payments towards note payable	(426)	(426)
Payments of issuance costs related to sales of common stock	(18)	0
Taxes paid related to net share settlement of equity awards	(24)	(144)
Proceeds from sale of common stock	0	15,628
Net cash (used in) provided by financing activities	(2,764)	12,012
Effect of exchange rate changes provided by foreign currency	0	138
Net decrease in cash, cash equivalents, and restricted cash	(14,716)	(1,159)
Cash, cash equivalents, and restricted cash at beginning of period	26,706	25,619
Cash, cash equivalents, and restricted cash at end of period	11,990	24,460
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid during the period for interest	223	639
Cash paid during the period for income taxes	3	64
NON-CASH INVESTING AND FINANCING ACTIVITIES
Changes in accounts payable related to purchases of equipment	$ (25)	$ (373)