Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities
Net loss	$ (19,249)	$ (21,012)
Adjustments to reconcile net loss to cash used in operating activities:
Stock-based compensation	1,216	2,924
Depreciation and amortization	607	812
Gain from change in fair value of warrant liability	(1,768)	0
Gain from sale of property and equipment	(3)	0
Amortization of debt discount and issue costs	427	236
Paid-in-kind non-cash interest	1,001	0
Provision for obsolete and slow-moving inventory	0	177
Loss from unconsolidated subsidiary	563	511
Gain from disposal of investment in unconsolidated subsidiary	(3,204)	(4,085)
Gain on sale of Atlas	(50)	0
Warranties issued and remediation added	1,614	1,639
Warranty recoverable from manufacturer	191	238
Credit loss (credits) provisions	192	587
Deferred income taxes	425	223
Lease expense and other	594	609
Impact on cash from changes in operating assets and liabilities:
Accounts receivable	(5,956)	23,181
Inventories	2,828	(13,333)
Prepaid and other current assets	1,193	(864)
Other assets	(392)	(562)
Accounts payable	4,819	9,483
Accruals and other current liabilities	9,507	(13,463)
Deferred revenue	(3,814)	(1,017)
Other non-current liabilities	(830)	(1,331)
Lease payments and other, net	(691)	(588)
Net cash used in operations	(10,780)	(15,635)
Cash flows from investing activities:
Purchases of property and equipment	(268)	(1,131)
Proceeds from sale of Atlas software platform	50	0
Proceeds from sale of property and equipment	3	0
Equity method investment in Alpha Steel	0	(1,800)
Proceeds from disposal of investment in unconsolidated subsidiary	3,204	4,085
Net cash provided by (used in) investing activities	2,989	1,154
Cash flows from financing activities:
Proceeds from stock option exercises	3	3
Net cash provided by financing activities	3	3
Effect of exchange rate changes on cash, cash equivalents and restricted cash	60	22
Decrease in cash, cash equivalents and restricted cash	(7,728)	(14,456)
Cash and cash equivalents at beginning of period	11,247	25,235
Supplemental disclosures of cash flow information:
Purchases of property and equipment included in ending accounts payable and accruals	104	202
Paid-in-kind non-cash interest added to Senior Notes principal	1,001	0
Fair value of common stock issued upon warrant exercise	7,927	0
Right-of-use asset and lease liability recognition for new leases	165	500
Cash paid during the period for interest	14	189
Cash paid during the period for taxes, net of refunds	12	78
Reconciliation of cash, cash equivalents and restricted cash at period end:
Cash and cash equivalents	$ 3,519	$ 10,779