Notes Payable - Schedule of Notes Payable (Details)																		12 Months Ended		24 Months Ended
	Dec. 28, 2022 USD ($)	Oct. 19, 2022 USD ($) shares	Sep. 23, 2022 USD ($) $ / shares	Aug. 14, 2022 USD ($) tranche $ / shares shares	Jul. 26, 2022 USD ($) trading_day $ / shares	Feb. 25, 2022 USD ($)	Dec. 30, 2021 USD ($)	Aug. 26, 2021 USD ($)	Aug. 10, 2021 USD ($) $ / shares shares	Aug. 05, 2021 USD ($) $ / shares shares	Jul. 21, 2021 USD ($) $ / shares shares	Jun. 09, 2021 USD ($) $ / shares shares	Mar. 12, 2021 USD ($)	Mar. 08, 2021 USD ($)	Mar. 01, 2021 USD ($) $ / shares	Jan. 13, 2021 USD ($) $ / shares shares	Apr. 17, 2020 USD ($)	Dec. 31, 2022 USD ($) trading_day $ / shares shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2018 USD ($)	Nov. 08, 2022 $ / shares	Oct. 11, 2022 USD ($)	Sep. 25, 2022 USD ($)	Apr. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Jul. 20, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Outstanding [Abstract]
Contractual Interest Rates																	1.00%
Cash Payment																		$ (87,279,000)	$ (48,210,000)
Debt Footnote Information [Abstract]
Notes payable accrued interest																										$ 7,400,000
Proceeds from notes payable, net of original issuance discount																		73,800,000	172,031,000
Change in fair value measurements																		(69,671,000)	(22,700,000)
Proceeds of additional funding																		38,400,000
Liability value																			12,600,000
Payments of notes payable issuance costs																		3,834,000	3,355,000
Summary Of Debt [Abstract]
Interest expense																		7,236,000	30,181,000
Restricted cash																		1,546,000	25,386,000
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																		7,690,000	86,904,000
Proceeds from loans																	$ 9,200,000
Deferral payments period																	2 years
Principal amounts converted or repaid							$ 9,000,000.0
Notes payable																										$ 85,200,000
Unforgiven portion period																	6 months
Change in fair value measurement of warrant liability																		95,130,000	0
Notes Payable With Employee On Demand 0%, Related Party | Affiliated Entity
Summary Of Debt [Abstract]
Note payable																			700,000									$ 700,000
Notes Payable At Fair Value
Debt Footnote Information [Abstract]
Liability value																		26,000,000	161,282,000								$ 59,742,000
Summary Of Debt [Abstract]
Changes in fair value measurements																			31,008,000
Bridge Warrants
Debt Footnote Information [Abstract]
Liability value																		95,130,000	$ 0
Summary Of Debt [Abstract]
Additions																		9,938,000
Changes in fair value measurements																		85,192,000
Ares Warrants
Debt Footnote Information [Abstract]
Exercise price of the warrant (in dollars per share) | $ / shares										$ 10.00
Warrants rights (in shares) | shares										670,092
Summary Of Debt [Abstract]
Exercisable period										6 years
Fair value of warrants										$ 2,500,000															$ 5,000,000.0
US-Based Investment Firm Warrants
Debt Footnote Information [Abstract]
Exercise price of the warrant (in dollars per share) | $ / shares									$ 10.00
Warrants term												7 years
Warrants rights (in shares) | shares									1,187,083
Summary Of Debt [Abstract]
Changes in fair value measurements									$ 8,000,000.0									$ 5,100,000
Class A Common Stock
Debt Footnote Information [Abstract]
Number of shares purchased (in shares) | shares											76,140,000
Warrants (in shares) | shares																		476,364,277	28,196,377
Class A Common Stock | Bridge Warrants
Debt Footnote Information [Abstract]
Warrants (in shares) | shares																		346,453,115
Class A Common Stock | US-Based Investment Firm Warrants
Debt Footnote Information [Abstract]
Exercise price of the warrant (in dollars per share) | $ / shares									$ 10.00		$ 10.00
Warrants rights (in shares) | shares									1,500,000		2,687,083
Class A Common Stock | Common Stock
Debt Footnote Information [Abstract]
Conversion of convertible securities (in shares) | shares																		258,910,861
Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance																		$ 41,719,000	$ 164,689,000
Fair Value Measurement Adjustments																			29,489,000
Original issue discount and proceeds allocated to warrants																			(27,124,000)
Net Carrying Value																			167,054,000
Debt Footnote Information [Abstract]
Notes payable											$ 93,700,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		41,719,000	164,689,000
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																		25,900,000
Notes Payable | Affiliated Entity
Debt Outstanding [Abstract]
Cash Payment											(41,900,000)
Summary Of Debt [Abstract]
Principal amounts converted or repaid											96,900,000
Accrued interest settled											13,600,000
Notes Payable | Level 3 | Fair Value, Nonrecurring
Debt Footnote Information [Abstract]
Notes payable																		$ 4,900,000	5,400,000
Notes Payable | Bridge Warrants
Debt Footnote Information [Abstract]
Number of shares purchased (in shares) | shares				16,392,267
Warrants term				7 years
Warrants rights (in shares) | shares																		8,559,863
Notes Payable | Class A Common Stock | Affiliated Entity
Summary Of Debt [Abstract]
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			$ 26,200,000
Bridge Notes Due on August 14, 2026 At 10.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		10.00%
Unpaid Principal Balance																		$ 36,622,000
Fair Value Measurement Adjustments																		264,000
Original issue discount and proceeds allocated to warrants																		(10,878,000)
Net Carrying Value																		26,008,000
Interest expense, debt including extinguishment																		1,676,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		$ 36,622,000
Notes Payable, China Various Other, Due On Demand At 0.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		0.00%	0.00%
Unpaid Principal Balance																		$ 4,997,000	$ 5,458,000
Fair Value Measurement Adjustments																		0	0
Original issue discount and proceeds allocated to warrants																		0	0
Net Carrying Value																		4,997,000	5,458,000
Interest expense, debt including extinguishment																		0
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		4,997,000	$ 5,458,000
Existing Notes Payable Agreements With Third Parties | Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance																		41,719,000
Fair Value Measurement Adjustments																		264,000
Original issue discount and proceeds allocated to warrants																		(10,878,000)
Net Carrying Value																		31,105,000
Interest expense, debt including extinguishment																		1,683,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		$ 41,719,000
Notes Payable March 1, 2021, Due On March 1, 2022, At 14.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		14.00%	14.00%
Unpaid Principal Balance																		$ 0	$ 55,000,000
Fair Value Measurement Adjustments																		(1,695,000)	7,692,000
Original issue discount and proceeds allocated to warrants																			(5,997,000)
Net Carrying Value																			56,695,000
Interest premium																		0
Cash Payment																		(55,000,000)
Conversion into Class A Common Stock																		0
Debt Footnote Information [Abstract]
Aggregate principal amount that may be issued															$ 85,000,000
Aggregate principal loan															$ 55,000,000
Original issue discount percent															4.00%
Repayments of debt						$ 55,000,000
Notes payable accrued interest															$ 7,700,000
Proceeds from notes payable, net of original issuance discount															51,500,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		0	55,000,000
Interest Payable																		0	6,455,000
Interest expense																		1,266,000	0
Principal conversion into Class A Common Stock																		55,000,000	0
Interest payments																		$ 7,721,000	$ 0
Debt issuance costs paid by lender															$ 100,000
Notes Payable August 26, 2021, Due On March 1, 2022, At 14.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		14.00%	14.00%
Unpaid Principal Balance																		$ 0	$ 30,000,000
Fair Value Measurement Adjustments																		(924,000)	1,011,000
Original issue discount and proceeds allocated to warrants																			(87,000)
Net Carrying Value																			30,924,000
Interest premium								$ 2,100,000										2,065,000
Cash Payment																		(32,065,000)
Conversion into Class A Common Stock																		0
Debt Footnote Information [Abstract]
Aggregate principal amount that may be issued								$ 30,000,000
Original issue discount percent								14.00%
Repayments of debt								$ 30,000,000
Notes payable accrued interest								$ 2,100,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		0	30,000,000
Interest Payable																		0	1,473,000
Interest expense																		662,000	0
Principal conversion into Class A Common Stock																		30,000,000	0
Interest payments																		2,135,000	0
Payment Premium payments																		$ 2,065,000	$ 0
Optional Notes Due October 2026 | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		15.00%	15.00%
Unpaid Principal Balance																		$ 0	$ 33,917,000
Fair Value Measurement Adjustments																		(765,000)	12,283,000
Original issue discount and proceeds allocated to warrants																			(11,518,000)
Net Carrying Value																			34,682,000
Interest premium																		0
Cash Payment																		0
Conversion into Class A Common Stock																		(33,917,000)
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		0	33,917,000
Interest Payable																		0	183,000
Interest expense																		2,572,000	0
Principal conversion into Class A Common Stock																		33,917,000	0
Interest payments																		$ 2,756,000	$ 0
PPP Loan Due on April 17, 2022 At 1.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		1.00%	1.00%
Unpaid Principal Balance																			$ 193,000
Fair Value Measurement Adjustments																		$ 0	0
Original issue discount and proceeds allocated to warrants																			0
Net Carrying Value																			193,000
Interest premium																		0
Cash Payment																		(193,000)
Conversion into Class A Common Stock																		$ 0
Summary Of Debt [Abstract]
Long-Term Debt, Gross																			$ 193,000
Auto Loans Due on October 26, 2026 At 7.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		7.00%	7.00%
Unpaid Principal Balance																		$ 100,000	$ 121,000
Fair Value Measurement Adjustments																		0	0
Original issue discount and proceeds allocated to warrants																		0	0
Net Carrying Value																		100,000	121,000
Interest expense, debt including extinguishment																		7,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		$ 100,000	$ 121,000
Notes Payable June 9, 2021 , Due On March 1, 2022 | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		0.00%	0.00%
Unpaid Principal Balance																			$ 40,000,000
Fair Value Measurement Adjustments																		$ 1,019,000	8,503,000
Original issue discount and proceeds allocated to warrants																			(9,522,000)
Net Carrying Value																			38,981,000
Interest premium																		0
Cash Payment																		0
Conversion into Class A Common Stock																		$ (40,000,000)
Summary Of Debt [Abstract]
Long-Term Debt, Gross																			40,000,000
Bridge Notes | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																		10.00%
Conversion into Class A Common Stock																		$ (45,400,000)
Debt Footnote Information [Abstract]
Aggregate principal loan				$ 52,000,000.0
Original issue discount percent				10.00%
Conversion price (in dollars per share) | $ / shares				$ 2.69
Number of tranches | tranche				3
Debt conversion, percent decrease of original issue discount				50.00%
Unamortized discount				$ 5,200,000
Proceeds from notes payable, net of original issuance discount				46,800,000
Debt instrument, commitment amount				$ 300,000,000
Debt instrument, option to purchase additional notes, period				12 months
Change in fair value measurements																		24,700,000
Payments of notes payable issuance costs																		$ 3,800,000
Bridge Notes | Notes Payable | Debt Instrument, Redemption, Period One
Debt Footnote Information [Abstract]
Conversion price (in dollars per share) | $ / shares				$ 2.2865
Bridge Notes | Notes Payable | Make-Whole Amount
Debt Outstanding [Abstract]
Contractual Interest Rates																		15.00%
Debt Footnote Information [Abstract]
Redemption price, percentage																		90.00%
Bridge Notes | Notes Payable | Class A Common Stock
Debt Footnote Information [Abstract]
Debt instrument, convertible, threshold consecutive trading days | trading_day																		5
Bridge Notes | Notes Payable | Maximum
Debt Footnote Information [Abstract]
Aggregate principal loan				$ 52,000,000
Notes Payable, Settled
Debt Outstanding [Abstract]
Conversion into Class A Common Stock																		$ (73,917,000)
Notes Payable, Settled | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																		(2,365,000)
Net Carrying Value																			161,475,000
Interest premium																		2,065,000
Cash Payment																		(87,258,000)
Amended ATW Convertible Notes | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates					10.00%
Conversion into Class A Common Stock		$ (6,700,000)
Debt Footnote Information [Abstract]
Aggregate principal amount that may be issued					$ 35,000,000
Conversion price (in dollars per share) | $ / shares					$ 10
Conversion of convertible securities (in shares) | shares		11,496,868
Amended ATW Convertible Notes | Notes Payable | Debt Instrument, Redemption, Period One
Debt Footnote Information [Abstract]
Redemption price, percentage					95.00%
Conversion of optional notes issuance period | trading_day					30
Amended ATW Convertible Notes | Notes Payable | Debt Instrument, Redemption, Period Two
Debt Footnote Information [Abstract]
Redemption price, percentage					92.00%
Conversion of optional notes issuance period | trading_day					7
June, 2021 Note Due on October 31, 2026, At 0.00% | Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance																		0	40,000,000
Debt Footnote Information [Abstract]
Aggregate principal amount that may be issued					$ 40,000,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																		0	40,000,000
Interest Payable																		0	0
Interest expense																		0	0
Principal conversion into Class A Common Stock																		40,000,000	0
Interest payments																		0	0
Bridge Warrants | Notes Payable
Debt Footnote Information [Abstract]
Change in fair value measurements																		$ 95,100,000
Exercise price of the warrant (in dollars per share) | $ / shares																		$ 5.0
Bridge Warrants | Notes Payable | Class A Common Stock
Debt Footnote Information [Abstract]
Conversion of optional notes issuance period | trading_day																		20
Debt instrument, convertible, threshold consecutive trading days | trading_day																		30
Bridge Warrants | Notes Payable | Minimum
Debt Footnote Information [Abstract]
Exercise price of the warrant (in dollars per share) | $ / shares																		$ 0.01
Bridge Warrants | Notes Payable | Maximum
Debt Footnote Information [Abstract]
Exercise price of the warrant (in dollars per share) | $ / shares																		$ 15.0
Third Bridge Notes | Notes Payable
Debt Footnote Information [Abstract]
Aggregate principal loan			$ 7,500,000
Fourth Bridge Notes | Notes Payable
Debt Footnote Information [Abstract]
Aggregate principal loan																						$ 7,500,000
Third And Fourth Bridge Notes | Notes Payable
Debt Footnote Information [Abstract]
Debt conversion, converted instrument, conversion price (in dollars per share) | $ / shares			$ 1.05
SPA Notes
Debt Outstanding [Abstract]
Conversion into Class A Common Stock	$ (900,000)
SPA Notes | Minimum
Summary Of Debt [Abstract]
Conversion rate	105.00%
SPA Notes | Minimum | Class A Common Stock
Debt Footnote Information [Abstract]
Conversion price (in dollars per share) | $ / shares																					$ 0.21
SPA Notes | Maximum
Summary Of Debt [Abstract]
Conversion rate	89.00%
SPA Notes | Notes Payable
Debt Footnote Information [Abstract]
Aggregate principal loan				$ 25,000,000
Debt conversion, converted instrument, conversion price (in dollars per share) | $ / shares			$ 1.05
Change in fair value measurements																		$ 7,700,000
SPA Notes | Notes Payable | Senyun
Debt Footnote Information [Abstract]
Aggregate principal loan																							$ 60,000,000
Proceeds of additional funding																		30,000,000.0
Proceeds from funding net of original issue discount																		27,000,000.0
Notes Payable, Excluding Bridge Notes | Notes Payable
Debt Outstanding [Abstract]
Conversion into Class A Common Stock																		$ (99,500,000)	(98,400,000)
March 1, 2021 Notes Due on March 1, 2022 At 14.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates															14.00%
Debt Footnote Information [Abstract]
Exercise price of the warrant (in dollars per share) | $ / shares															$ 10.00
Liability value															$ 5,000,000
Summary Of Debt [Abstract]
Issuance period															15 days
Fully diluted capitalization (in percent)															0.20%
Notes Payable Due On March 1, 2022, At 14.00% | Ares Warrants
Debt Footnote Information [Abstract]
Exercise price of the warrant (in dollars per share) | $ / shares										$ 10.00
Warrants rights (in shares) | shares										670,092
Summary Of Debt [Abstract]
Fair value of warrants										$ 2,500,000
Notes Payable Due On March 1, 2022, At 14.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates															14.00%
Summary Of Debt [Abstract]
Cash requirement											$ 25,000,000				$ 5,000,000
Restricted cash																			25,000,000
August 26, 2021 Notes, Due on March 1, 2022 At 0.00% | Notes Payable
Summary Of Debt [Abstract]
Payment premium, percentage								14.00%
Notes Payable June 9, 2021 Notes, Due On December 9, 2022 | Notes Payable
Debt Footnote Information [Abstract]
Aggregate principal loan												$ 20,000,000
Notes Payable June 9, 2021 Notes 2, Due On December 9, 2022 | Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance																			20,000,000
Debt Footnote Information [Abstract]
Original issue discount percent												13.00%
Proceeds from notes payable, net of original issuance discount																			17,400,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																			20,000,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net																			2,600,000
Notes Payable, Convertible, Due December 2022, June 2021 Notes | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates												10.00%
Debt Footnote Information [Abstract]
Aggregate principal amount that may be issued												$ 40,000,000
Aggregate principal loan												20,000,000
Proceeds from notes payable, net of original issuance discount												$ 35,600,000
Exercise price of the warrant (in dollars per share) | $ / shares												$ 10.00
Warrants rights (in shares) | shares												1,500,000
Payments of notes payable issuance costs												$ 200,000
Summary Of Debt [Abstract]
Additions												4,200,000
Changes in fair value measurements												$ 5,100,000
Liquidation premium, percent												30.00%
Notes Payable June 9, 2021 Notes 1, Due On December 9, 2022 | Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance																			20,000,000
Debt Footnote Information [Abstract]
Original issue discount percent												8.00%
Proceeds from notes payable, net of original issuance discount																			18,203,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																			20,000,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net																			1,797,000
Notes Payable August 10, 2021 Optional Notes, Due On February 10, 2023, At 15.00% | US-Based Investment Firm Warrants
Debt Footnote Information [Abstract]
Exercise price of the warrant (in dollars per share) | $ / shares									$ 10.00
Warrants rights (in shares) | shares									1,187,083
Summary Of Debt [Abstract]
Fair value of warrants									$ 8,000,000
Warrants exercisable period									7 years
Notes Payable August 10, 2021 Optional Notes, Due On February 10, 2023, At 15.00% | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates									15.00%
Unpaid Principal Balance									$ 33,900,000										33,917,000
Debt Footnote Information [Abstract]
Original issue discount percent									8.00%
Conversion price (in dollars per share) | $ / shares									$ 10.00
Proceeds from notes payable, net of original issuance discount									$ 30,400,000										30,375,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross									33,900,000										33,917,000
Interest Payable																			183,000
Interest expense																			183,000
Debt issuance costs recorded in interest expense									$ 800,000
Liquidation premium, percent									30.00%
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net																			3,542,000
Notes Payable - China, Due On Demand, At 0.00% | Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance																			5,458,000
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount																				$ 4,400,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																			5,458,000
Foreign Currency Transaction Gain (Loss), Unrealized																			133,000
Reclassification Of Debt Instrument																			730,000
Note Payable With Repayment In 12% Increments, Contingent On Fundraising Event | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			0
Net Carrying Value																			0								57,293,000
Cash Payment																			0
Conversion into Class A Common Stock																			(73,177,000)
Summary Of Debt [Abstract]
Interest expense																			3,408
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			17,177,000
Debt Instrument, Other Settlement Gain (Loss)																			(1,293,000)
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			0
Notes Payable, Due On June 2021, At 12.00% | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			0
Net Carrying Value																			0								19,100,000
Cash Payment																			0
Conversion into Class A Common Stock																			(25,198,000)
Summary Of Debt [Abstract]
Interest expense																			1,281
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			6,098,000
Debt Instrument, Other Settlement Gain (Loss)																			0
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			0
Notes Payable, Settlements Prior To Transaction | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			0
Net Carrying Value																			0								76,393,000
Cash Payment																			0
Conversion into Class A Common Stock																			(98,375,000)
Summary Of Debt [Abstract]
Interest expense																			4,689
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			23,275,000
Debt Instrument, Other Settlement Gain (Loss)																			(1,293,000)
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			0
Notes Payable, NPA Tranche, Due October 2021 | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			104,000
Net Carrying Value																			0								21,059,000
Cash Payment																			(17,636,000)
Conversion into Class A Common Stock																			(7,141,000)
Summary Of Debt [Abstract]
Interest expense																			976
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			3,614,000
Debt Instrument, Other Settlement Gain (Loss)																			0
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			2,699,000
Notes Payable - China, Due On Demand, At 9.00% | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			0
Net Carrying Value																			0								3,659,000
Cash Payment																			0
Conversion into Class A Common Stock																			(6,428,000)
Summary Of Debt [Abstract]
Interest expense																			374
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			2,713,000
Debt Instrument, Other Settlement Gain (Loss)																			56,000
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			2,430,000
Notes Payable - China, Various Dates 2021, At 6.00% | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			0
Net Carrying Value																			0								4,807,000
Cash Payment																			0
Conversion into Class A Common Stock																			(5,674,000)
Summary Of Debt [Abstract]
Interest expense																			164
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			757,000
Debt Instrument, Other Settlement Gain (Loss)																			110,000
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			2,145,000
Note Payable, Due March 2022 | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			1,988,000
Net Carrying Value																			0								17,712,000
Cash Payment																			0
Conversion into Class A Common Stock																			(20,367,000)
Summary Of Debt [Abstract]
Interest expense																			0
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			0
Debt Instrument, Other Settlement Gain (Loss)																			667,000
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			7,698,000
January 13 And March 8, 2021 Notes, Due October 2021, Various Interest Rates | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			6,935,000
Net Carrying Value																			0								0
Cash Payment																			0
Conversion into Class A Common Stock																			(23,725,000)
Summary Of Debt [Abstract]
Interest expense																			0
Long-Term Debt, Net Of Original Issue Discount And Warrants																			16,790,000
Accrued Interest At Settlement																			0
Debt Instrument, Other Settlement Gain (Loss)																			0
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			8,968,000
Note Payable, Due October 2021 At 12.75% | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			138,000
Net Carrying Value																			0								20,972,000
Cash Payment																			(18,992,000)
Conversion into Class A Common Stock																			(3,055,000)
Summary Of Debt [Abstract]
Interest expense																			1,334
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			270,000
Debt Instrument, Other Settlement Gain (Loss)																			667,000
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			1,155,000
January 13 Notes and March 12 Notes, Due October 6, 2021, At 8.00% & 15.75% | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			4,901,000
Net Carrying Value																			0								0
Cash Payment																			(11,582,000)
Conversion into Class A Common Stock																			(2,151,000)
Summary Of Debt [Abstract]
Interest expense																			632
Long-Term Debt, Net Of Original Issue Discount And Warrants																			8,750,000
Accrued Interest At Settlement																			82,000
Debt Instrument, Other Settlement Gain (Loss)																			0
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			813,000
Notes Payable, Settlements During The Transaction | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			14,066,000
Net Carrying Value																			0								68,209,000
Cash Payment																			(48,210,000)
Conversion into Class A Common Stock																			(68,541,000)
Summary Of Debt [Abstract]
Interest expense																			3,480
Long-Term Debt, Net Of Original Issue Discount And Warrants																			25,540,000
Accrued Interest At Settlement																			7,436,000
Debt Instrument, Other Settlement Gain (Loss)																			1,500,000
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			25,908,000
Note Payable, Due April 2022 | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			0
Net Carrying Value																			193,000								9,168,000
Cash Payment																			0
Conversion into Class A Common Stock																			0
Summary Of Debt [Abstract]
Interest expense																			92
Long-Term Debt, Net Of Original Issue Discount And Warrants																			0
Accrued Interest At Settlement																			0
Debt Instrument, Other Settlement Gain (Loss)																			(8,975,000)
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			(8,975,000)
Settlements And Loan Forgiveness | Notes Payable
Debt Outstanding [Abstract]
Fair Value Measurement Adjustments																			14,066,000
Net Carrying Value																			193,000								$ 153,770,000
Cash Payment																			(48,210,000)
Conversion into Class A Common Stock																			(166,916,000)
Summary Of Debt [Abstract]
Interest expense																			8,261
Long-Term Debt, Net Of Original Issue Discount And Warrants																			25,540,000
Accrued Interest At Settlement																			30,711,000
Debt Instrument, Other Settlement Gain (Loss)																			(8,768,000)
Loss on extinguishment of related party notes payable, notes payable and vendor payables in trust, net																			16,933,000
Notes Payable, Due On April 17, 2022, At 1.00% | Notes Payable
Debt Outstanding [Abstract]
Net Carrying Value																								$ 200,000
Summary Of Debt [Abstract]
Accrued interest settled							$ 200,000
Notes Payable - Due On March 9, 2021, Additional Notes, January 13 Notes | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																0.00%
Debt Footnote Information [Abstract]
Aggregate principal loan																$ 11,300,000
Original issue discount percent																8.00%
Proceeds from notes payable, net of original issuance discount																$ 9,900,000
Summary Of Debt [Abstract]
Debt issuance costs paid by lender																$ 500,000
Notes Payable - Due On March 9, 2021, Additional Note, March 12 Notes | Notes Payable
Debt Footnote Information [Abstract]
Aggregate principal loan													$ 7,000,000
Original issue discount percent													8.00%
Proceeds from notes payable, net of original issuance discount													$ 6,400,000
Notes Payable - Due On March 9, 2021, Additional Notes | Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance																			0
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount																			16,310,000
Exercise price of the warrant (in dollars per share) | $ / shares																$ 10.00
Warrants rights (in shares) | shares																662,083
Summary Of Debt [Abstract]
Long-Term Debt, Gross																			0
Fair value of warrants																$ 2,000,000.0
Warrants exercisable period													7 years
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net																			1,940,000
Principal Conversion Premium Payments Settled With Equity																			23,725,000
Notes Payable, Various Other Notes, Due On October 6, 2021, Additional January 2021 Note | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates																8.00%
Debt Footnote Information [Abstract]
Aggregate principal loan																$ 3,800,000
Original issue discount percent																6.50%
Proceeds from notes payable, net of original issuance discount																$ 3,300,000
Summary Of Debt [Abstract]
Debt issuance costs paid by lender																$ 200,000
Percent of premium convertible into equity																50.00%
Notes Payable, Various Other Notes, Due On October 6, 2021, Additional January 2021 Note | Notes Payable | Minimum
Summary Of Debt [Abstract]
Liquidation premium, percent																35.00%
Notes Payable, Various Other Notes, Due On October 6, 2021, Additional January 2021 Note | Notes Payable | Maximum
Summary Of Debt [Abstract]
Liquidation premium, percent																45.00%
Notes Payable, Various Other Notes, Due On October 6, 2021, Additional March 2021 Note | Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates														15.75%
Debt Footnote Information [Abstract]
Aggregate principal loan														$ 5,600,000
Original issue discount percent														6.50%
Proceeds from notes payable, net of original issuance discount														$ 5,200,000
Summary Of Debt [Abstract]
Debt issuance costs paid by lender														$ 300,000
Percent of premium convertible into equity														50.00%
Notes Payable, Various Other Notes, Due On October 6, 2021, Additional March 2021 Note | Notes Payable | Minimum
Summary Of Debt [Abstract]
Liquidation premium, percent														42.00%
Notes Payable, Various Other Notes, Due On October 6, 2021, Additional March 2021 Note | Notes Payable | Maximum
Summary Of Debt [Abstract]
Liquidation premium, percent														52.00%
Notes Payable, Various Other Notes, Due On October 6, 2021, At 12.75%, Additional Note | Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance																			0
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount																			8,218,000
Summary Of Debt [Abstract]
Long-Term Debt, Gross																			0
Interest expense																			632,000
Interest payments																			550,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net																			1,132,000
Interest Payments Settled With Equity																			82,000
Principal Conversion Premium Payments Settled With Equity																			2,069,000
Principal Payments And Conversion Premium Settled With Cash																			$ 11,582,000