Consolidated Statements of Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	VCTF warrant	Equity Financing Program	ECARX Holdings, Inc. (ECX)	Freedom Photonics	Solfice	TPK Universal Solutions Limited	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital VCTF warrant	Additional Paid-in Capital Equity Financing Program	Additional Paid-in Capital ECARX Holdings, Inc. (ECX)	Additional Paid-in Capital Freedom Photonics	Additional Paid-in Capital Solfice	Additional Paid-in Capital TPK Universal Solutions Limited	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Accumulated Deficit	Class A Common Stock	Class A Common Stock Common Stock	Class A Common Stock Common Stock Equity Financing Program	Class A Common Stock Common Stock ECARX Holdings, Inc. (ECX)	Class A Common Stock Common Stock Freedom Photonics	Class A Common Stock Common Stock Solfice	Class A Common Stock Common Stock TPK Universal Solutions Limited	Class B Common Stock	Class B Common Stock Common Stock
Beginning balance (in shares) at Dec. 31, 2021																				17,721,742							6,472,578
Beginning balance at Dec. 31, 2021	$ 197,985								$ 1,257,248							$ (908)	$ (235,871)	$ (822,487)		$ 2							$ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased	(76,606)																(76,606)
Issuance of Class A common stock upon exercise of Private Warrants (in shares)																				27,049
Issuance of Class A common stock upon exercise of Private Warrants	19,003								19,003
Issuance of Class A common stock (in Shares)																				610,385
Issuance of Class A common stock	3,945								3,945
Issuance of Class A common stock under ESPP (in shares)																				11,129
Issuance of Class A common stock under ESPP	1,271								1,271
Retirement of unvested restricted common stock (in shares)																			(439,979)	(3,212)
Retirement of unvested restricted common stock	0
Vendor payments under the stock-in-lieu of cash program (in shares)																				663,284
Vendor payments under the stock in lieu of cash program	80,255								80,255
Investment in ECARX Holdings, Inc. (in shares)																						135,358
Investment in ECARX Holdings, Inc.				$ 12,588								$ 12,588
Optogration milestone awards (in shares)																				108,799
Optogration milestone awards	11,751								11,751
Acquisition of Freedom Photonics LLC /certain assets from Solfice Research, Inc. (in shares)																							145,065	24,946
Acquisition of Freedom Photonics LLC /certain assets from Solfice Research, Inc.					$ 30,510	$ 3,361							$ 30,510	$ 3,361
Stock-based compensation	142,519								142,519
Other comprehensive (loss) income	(3,318)															(3,318)
Payments of employee taxes related to stock-based awards	(3,730)								(3,730)
Net loss	(445,939)																	(445,939)
Ending balance (in shares) at Dec. 31, 2022																				19,444,545							6,472,578
Ending balance at Dec. 31, 2022	(26,405)								1,558,721							(4,226)	(312,477)	(1,268,426)		$ 2							$ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock (in Shares)																				1,239,246	631,191				220,384
Issuance of Class A common stock	3,056		$ 50,190				$ 20,000		3,056		$ 50,190				$ 20,000
Issuance of Class A common stock under ESPP (in shares)																				47,147
Issuance of Class A common stock under ESPP	2,641								2,641
Issuance of Class A common stock to Plus AI (in shares)								128,431
Issuance of Class A common stock to Plus AI	12,141								12,141
Vendor payments under the stock-in-lieu of cash program (in shares)																				1,045,115
Vendor payments under the stock in lieu of cash program	75,873								75,873
Milestone awards relating to acquisitions (in shares)																				196,221
Milestone awards relating to acquisitions	20,656								20,656
Stock-based compensation	186,278								186,278
Other comprehensive (loss) income	4,228															4,228
Payments of employee taxes related to stock-based awards	(2,137)								(2,137)
Net loss	(571,269)																	(571,269)
Ending balance (in shares) at Dec. 31, 2023																			21,494,717	22,952,280						6,472,578	6,472,578
Ending balance at Dec. 31, 2023	(224,748)								1,927,419							2	(312,477)	(1,839,695)		$ 2							$ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock (in Shares)																				2,456,525	8,335,450
Issuance of Class A common stock	548		$ 89,359						548		$ 89,358										$ 1
Issuance of Class A common stock under ESPP (in shares)																				63,675
Issuance of Class A common stock under ESPP	1,153								1,153
Issuance of Class A common stock to Plus AI (in shares)																				46,978
Issuance of Class A common stock to Plus AI	1,842								1,842
Issuance of Class A common stock under 401(k) Plan (in shares)																				99,652
Issuance of Class A common stock under 401(k) Plan	2,550								2,550
Issuance of Class A common stock upon conversion of 2030 Convertible Notes (in shares)																				1,980,408
Issuance of Class A common stock upon conversion of 2030 Convertible Notes	28,945								28,945
Vendor payments under the stock-in-lieu of cash program (in shares)																				129,959
Vendor payments under the stock in lieu of cash program	5,473								5,473
Milestone awards relating to acquisitions (in shares)																				391,749
Milestone awards relating to acquisitions	11,250								11,250
Conversion of Class B common stock to Class A common stock (in shares)																				1,600,000							(1,600,000)
Expense related to Volvo Warrants		$ 642								$ 642
Stock-based compensation	137,631								137,631
Other comprehensive (loss) income	(297)															(297)
Payments of employee taxes related to stock-based awards	(1,997)								(1,997)
Net loss	(273,140)																	(273,140)
Ending balance (in shares) at Dec. 31, 2024																			36,599,113	38,056,676						4,872,578	4,872,578
Ending balance at Dec. 31, 2024	$ (220,789)								$ 2,204,814							$ (295)	$ (312,477)	$ (2,112,835)		$ 3							$ 1