CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (177,280)	$ (32,397)
Adjustments to reconcile net loss to net cash used in operating activities:
Goodwill impairment charges	99,409	0
Depreciation and amortization	6,159	2,385
Loss on write-off of construction in progress and right-of-use asset impairment	1,423	0
Stock-based compensation	21,780	8,750
Change in right-of-use asset	1,112	644
Interest expense	685	0
Amortization of debt issuance costs and debt discount	62	0
Accretion or amortization on short-term investments	(805)	0
Change in fair value of warrant liabilities	(106)	(1,745)
Inventory write down	2,836	203
Provision for doubtful accounts	445	0
Loss/(Gain) from disposal of property and equipment	145	(100)
Changes in operating assets and liabilities, net of acquisition effects:
Accounts receivable	(3,450)	842
Inventory	(2,329)	(4,373)
Prepaid expenses and other assets	672	2,480
Accounts payable	5,488	4,807
Accrued and other liabilities	(9,218)	(2,551)
Contract liabilities	944	0
Operating lease liability	(984)	(772)
Net cash used in operating activities	(53,012)	(21,827)
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sale of property and equipment	168	275
Purchase of short-term investments	(5,003)	0
Proceeds from sales of short-term investments	19,981	0
Purchases of property and equipment	(1,006)	(416)
Cash and cash equivalents acquired in the Velodyne Merger	32,137	0
Net cash provided by (used in) investing activities	46,277	(141)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchase of common stock	0	(31)
Proceeds from exercise of stock options	18	209
Taxes paid related to net share settlement of restricted stock units	0	(59)
Net cash provided by financing activities	18	119
Effect of exchange rates on cash and cash equivalents	(79)	(12)
Net decrease in cash, cash equivalents and restricted cash	(6,796)	(21,861)
Cash, cash equivalents and restricted cash at beginning of period	124,278	184,656
Cash, cash equivalents and restricted cash at end of period	117,482	162,795
SUPPLEMENTAL DISCLOSURES OF OPERATING ACTIVITIES:
Cash paid for interest	1,383	0
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING INFORMATION:
Property and equipment purchases included in accounts payable and accrued liabilities	258	377
Common stock shares issued in the Velodyne Merger	297,425	0
Common stock warrants issued in the Velodyne Merger	$ 9,177	$ 0