Notes Payable - Schedule of Notes Payable (Details) $ / shares in Units, $ in Thousands																3 Months Ended		9 Months Ended
	Feb. 25, 2022 USD ($)	Dec. 30, 2021 USD ($)	Sep. 30, 2021 USD ($) $ / shares	Aug. 26, 2021	Aug. 10, 2021 USD ($) $ / shares shares	Aug. 05, 2021 USD ($) $ / shares shares	Jul. 21, 2021 USD ($) $ / shares shares	Jul. 20, 2021 USD ($) shares	Jun. 30, 2021 USD ($)	Jun. 09, 2021 USD ($) instrument $ / shares shares	Mar. 12, 2021 USD ($) $ / shares shares	Mar. 08, 2021 USD ($)	Mar. 01, 2021 USD ($) scenario $ / shares	Jan. 15, 2021 USD ($)	Jan. 13, 2021 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) $ / shares	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) $ / shares	Sep. 30, 2020 USD ($)	Sep. 09, 2021 $ / shares shares	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Outstanding [Abstract]
Notes payable, current portion			$ 103,505													$ 103,505		$ 103,505				$ 149,199
Notes payable, less current portion			99,618													99,618		99,618				9,168
Total notes payable			203,123					$ 85,202								203,123		203,123
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount																		172,031	$ 25,621
Restricted cash			$ 25,083													25,083	$ 713	25,083	713			$ 703	$ 1,133
Debt transaction costs paid																		3,355	2,554
Aggregate principal amounts of debt converted																		2,863	0
Summary Of Debt [Abstract]
Interest expense																296	8,505	26,550	22,955
Net proceeds																		172,031	25,621
Debt Converted [Abstract]
Cash Payment																		(48,210)	0
Loss on Settlement																$ 94,727	$ (609)	$ 96,036	$ (295)
Class A Common Stock
Debt Footnote Information [Abstract]
Exercise price (in dollars per share) | $ / shares										$ 10.00										$ 10.00
Aggregate shares able to be purchased from warrants issued (in shares) | shares					272,730					1,500,000										1,187,083
Share price (in dollars per share) | $ / shares			$ 10.00													$ 10.00		$ 10.00
US-Based Investment Firm Warrants
Debt Footnote Information [Abstract]
Term of warrants										7 years
Exercise price (in dollars per share) | $ / shares					$ 10.00
Aggregate shares able to be purchased from warrants issued (in shares) | shares					1,187,083
Changes in fair value measurements			$ 5,125		$ 7,976
Warrants exercisable period					7 years
US-Based Investment Firm Warrants | Class A Common Stock
Debt Footnote Information [Abstract]
Exercise price (in dollars per share) | $ / shares					$ 10.00		$ 10.00
Aggregate shares able to be purchased from warrants issued (in shares) | shares					1,500,000		2,687,083
Ares Warrants
Debt Footnote Information [Abstract]
Exercise price (in dollars per share) | $ / shares						$ 10.00
Exercisable period						6 years
Aggregate shares able to be purchased from warrants issued (in shares) | shares						670,092
Fair value of warrants						$ 2,507															$ 5,000
Note Payable, Due Various Maturity Dates, At 12.00%
Debt Converted [Abstract]
Loss on Settlement																$ 0
Notes Payable, Convertible, Due October 2021 At 0.00%, March 12 Notes
Debt Footnote Information [Abstract]
Outstanding principal, accrued and unpaid interest and accrued original issue discount percentage											130.00%
Notes payable
Debt Outstanding [Abstract]
Unpaid Principal Balance			173,451						$ 160,302							173,451		$ 173,451
Fair Value Measurement Adjustments			45,280				$ 24,113									45,280		45,280
Proceeds Allocated to Warrants			(15,608)													(15,608)		(15,608)
Net Carrying Value			203,123													203,123		203,123
Interest expense																2,378		4,997
Debt Footnote Information [Abstract]
Unpaid Principal Balance			$ 173,451						160,302							$ 173,451		$ 173,451
Cash paid							48,210
Principal amounts converted or repaid							85,202
Accrued interest settled							7,435
Share price (in dollars per share) | $ / shares			$ 10.00													$ 10.00		$ 10.00
Summary Of Debt [Abstract]
Outstanding principal			$ 173,451						160,302							$ 173,451		$ 173,451
Debt Converted [Abstract]
Unpaid Principal Balance			173,451						160,302							173,451		173,451
Accrued Interest at Settlement							30,710
Fair Value Measurement Adjustments			$ 45,280				24,113									45,280		45,280
Cash Payment							(48,210)
Settlement with Commit-ment to Issue Class A Common Stock							$ (166,916)
Loss on Settlement																(25,908)		25,908
Notes payable | Class A Common Stock
Debt Footnote Information [Abstract]
Shares issued from conversion (in shares) | shares							6,854,013	7,823,306
Aggregate principal amounts of debt converted								$ 75,100
Debt Converted [Abstract]
Accrued Interest at Settlement								23,275
Loss on Settlement																$ 25,908		$ 25,908
Notes payable | Notes Payable, China Various Other, Due On Demand At 0.00%
Debt Outstanding [Abstract]
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 5,366													$ 5,366		$ 5,366
Fair Value Measurement Adjustments			0													0		0
Proceeds Allocated to Warrants			0													0		0
Net Carrying Value			$ 5,366													5,366		5,366
Interest expense																$ 0		$ 0
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount														$ 102
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 5,366													$ 5,366		$ 5,366
Summary Of Debt [Abstract]
Outstanding principal			$ 5,366													$ 5,366		$ 5,366
Net proceeds														$ 102
Debt Converted [Abstract]
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 5,366													$ 5,366		$ 5,366
Fair Value Measurement Adjustments			$ 0													$ 0		$ 0
Notes payable | March 1, 2021 And August 26, 2021 Notes | Subsequent Event
Debt Footnote Information [Abstract]
Principal payments	$ 96,921
Notes payable, related parties, accrued interest	9,856
Interest premium	2,065
Aggregate principal amounts of debt converted	$ 85,000
Notes payable | March 1, 2021 Notes Due on March 1, 2022 At 14.00%
Debt Outstanding [Abstract]
Contractual Interest Rates			14.00%										14.00%			14.00%		14.00%
Unpaid Principal Balance			$ 55,000													$ 55,000		$ 55,000
Fair Value Measurement Adjustments			5,076													5,076		5,076
Proceeds Allocated to Warrants			(2,507)													(2,507)		(2,507)
Net Carrying Value			$ 57,569													57,569		57,569
Interest expense																$ 1,962		$ 4,536
Debt Footnote Information [Abstract]
Aggregate principal amount that may be issued													$ 85,000
Aggregate principal													55,000
Proceeds from notes payable, net of original issuance discount									51,510				51,510
Debt issuance costs paid by lender													$ 90
Original issue discount percent													4.00%
Contractual Interest Rates			14.00%										14.00%			14.00%		14.00%
Issuance period													15 days
Term of warrants													6 years
Fully diluted capitalization (in percent)													0.20%
Exercise price (in dollars per share) | $ / shares													$ 10.00
Number of scenarios | scenario													2
Liability value													$ 5,000
Unpaid Principal Balance			$ 55,000													$ 55,000		$ 55,000
Debt issuance costs recorded in interest expense			315													315		315
Summary Of Debt [Abstract]
Outstanding principal			55,000													55,000		55,000
Accrued interest			4,536													4,536		4,536
Original issue discount			3,490													3,490		3,490
Debt issuance costs recorded in interest expense			$ 315													$ 315		315
Principal payments																		0
Interest payments																		$ 0
Net proceeds									51,510				$ 51,510
Debt Converted [Abstract]
Contractual Interest Rates			14.00%										14.00%			14.00%		14.00%
Unpaid Principal Balance			$ 55,000													$ 55,000		$ 55,000
Fair Value Measurement Adjustments			$ 5,076													$ 5,076		$ 5,076
Notes payable | August 26, 2021 Notes, Due on March 1, 2022 At 0.00%
Debt Outstanding [Abstract]
Contractual Interest Rates			14.00%													14.00%		14.00%
Unpaid Principal Balance			$ 30,000													$ 30,000		$ 30,000
Fair Value Measurement Adjustments			1,402													1,402		1,402
Proceeds Allocated to Warrants			0													0		0
Net Carrying Value			$ 31,402													31,402		31,402
Interest expense																$ 393
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount																		$ 29,913
Contractual Interest Rates			14.00%													14.00%		14.00%
Unpaid Principal Balance			$ 30,000													$ 30,000		$ 30,000
Debt issuance costs recorded in interest expense			87													87		87
Debt term				1 year
Payment premium percentage				14.00%
Summary Of Debt [Abstract]
Outstanding principal			30,000													30,000		30,000
Accrued interest			393													393		393
Interest expense																		393
Original issue discount			0													0		0
Debt issuance costs recorded in interest expense			$ 87													$ 87		87
Principal payments																		0
Interest payments																		0
Net proceeds																		$ 29,913
Debt Converted [Abstract]
Contractual Interest Rates			14.00%													14.00%		14.00%
Unpaid Principal Balance			$ 30,000													$ 30,000		$ 30,000
Fair Value Measurement Adjustments			$ 1,402													$ 1,402		$ 1,402
Notes payable | PPP Loan Due on April 17, 2022 At 1.00%
Debt Outstanding [Abstract]
Contractual Interest Rates			1.00%													1.00%		1.00%
Unpaid Principal Balance			$ 9,168													$ 9,168		$ 9,168
Fair Value Measurement Adjustments			0													0		0
Proceeds Allocated to Warrants			0													0		0
Net Carrying Value			$ 9,168													9,168		9,168
Interest expense																$ 23		$ 68
Debt Footnote Information [Abstract]
Contractual Interest Rates			1.00%													1.00%		1.00%
Unpaid Principal Balance			$ 9,168													$ 9,168		$ 9,168
Summary Of Debt [Abstract]
Outstanding principal			$ 9,168													$ 9,168		$ 9,168
Debt Converted [Abstract]
Contractual Interest Rates			1.00%													1.00%		1.00%
Unpaid Principal Balance			$ 9,168													$ 9,168		$ 9,168
Fair Value Measurement Adjustments			$ 0													$ 0		$ 0
Notes payable | PPP Loan Due on April 17, 2022 At 1.00% | Subsequent Event
Debt Outstanding [Abstract]
Net Carrying Value		$ 195
Debt Footnote Information [Abstract]
Principal amounts converted or repaid		8,975
Accrued interest settled		$ 155
Notes payable | June 9, 2021 Note 1 Due on December 9, 2022 At 0.00%
Debt Outstanding [Abstract]
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 20,000													$ 20,000		$ 20,000
Fair Value Measurement Adjustments			10,079													10,079		10,079
Proceeds Allocated to Warrants			(2,563)													(2,563)		(2,563)
Net Carrying Value			27,516													27,516		27,516
Interest expense																$ 0		$ 0
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount			$ 18,203
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 20,000													$ 20,000		$ 20,000
Debt issuance costs recorded in interest expense			197													197		197
Summary Of Debt [Abstract]
Outstanding principal			20,000													20,000		20,000
Accrued interest			0													0		0
Interest expense																0		0
Original issue discount			1,600													1,600		1,600
Debt issuance costs recorded in interest expense			197													$ 197		197
Principal payments																		0
Interest payments																		$ 0
Net proceeds			$ 18,203
Debt Converted [Abstract]
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 20,000													$ 20,000		$ 20,000
Fair Value Measurement Adjustments			$ 10,079													$ 10,079		$ 10,079
Notes payable | June 9, 2021 Note 2 Due on December 9, 2022 At 0.00%
Debt Outstanding [Abstract]
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 20,000													$ 20,000		$ 20,000
Fair Value Measurement Adjustments			7,402													7,402		7,402
Proceeds Allocated to Warrants			(2,562)													(2,562)		(2,562)
Net Carrying Value			24,840													24,840		24,840
Interest expense																$ 0		$ 0
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount			$ 17,400
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 20,000													$ 20,000		$ 20,000
Debt issuance costs recorded in interest expense			0													0		0
Summary Of Debt [Abstract]
Outstanding principal			20,000													20,000		20,000
Accrued interest			0													0		0
Interest expense																0		0
Original issue discount			2,600													2,600		2,600
Debt issuance costs recorded in interest expense			0													$ 0		$ 0
Net proceeds			$ 17,400
Debt Converted [Abstract]
Contractual Interest Rates			0.00%													0.00%		0.00%
Unpaid Principal Balance			$ 20,000													$ 20,000		$ 20,000
Fair Value Measurement Adjustments			$ 7,402													$ 7,402		$ 7,402
Notes payable | August 10, 2021 Optional Notes Due on February 10,2023 At 0.00%
Debt Outstanding [Abstract]
Contractual Interest Rates			15.00%													15.00%		15.00%
Unpaid Principal Balance			$ 33,917													$ 33,917		$ 33,917
Fair Value Measurement Adjustments			21,321													21,321		21,321
Proceeds Allocated to Warrants			(7,976)													(7,976)		(7,976)
Net Carrying Value			47,262													47,262		47,262
Interest expense																$ 0		$ 0
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount			$ 30,375
Contractual Interest Rates			15.00%													15.00%		15.00%
Unpaid Principal Balance			$ 33,917													$ 33,917		$ 33,917
Debt issuance costs recorded in interest expense			$ 828													$ 828		$ 828
Conversion price (in dollars per share) | $ / shares			$ 10.00													$ 10.00		$ 10.00
Liquidation premium, percent			30.00%													30.00%		30.00%
Summary Of Debt [Abstract]
Outstanding principal			$ 33,917													$ 33,917		$ 33,917
Original issue discount			2,714													2,714		2,714
Debt issuance costs recorded in interest expense			828													$ 828		$ 828
Net proceeds			$ 30,375
Debt Converted [Abstract]
Contractual Interest Rates			15.00%													15.00%		15.00%
Unpaid Principal Balance			$ 33,917													$ 33,917		$ 33,917
Fair Value Measurement Adjustments			21,321													21,321		21,321
Notes payable | Note Payable, Due October 2021 At 14.00%
Debt Footnote Information [Abstract]
Cash requirement							$ 25,000						$ 5,000
Restricted cash			$ 25,000													$ 25,000		25,000
Notes payable | Notes Payable, Due December 2022, June 2021 Notes
Debt Outstanding [Abstract]
Contractual Interest Rates										10.00%
Debt Footnote Information [Abstract]
Aggregate principal amount that may be issued										$ 40,000
Aggregate principal										20,000
Proceeds from notes payable, net of original issuance discount										$ 35,603
Contractual Interest Rates										10.00%
Number of notes payable | instrument										2
Liquidation premium, percent										30.00%
Original issuance discount										$ 4,200
Changes in fair value measurements										5,125
Debt transaction costs paid										$ 197
Threshold period for additional issuance										12 months
Summary Of Debt [Abstract]
Net proceeds										$ 35,603
Debt Converted [Abstract]
Contractual Interest Rates										10.00%
Notes payable | Notes Payable, Convertible, Due December 2022, June 2021 Notes - Note 1
Debt Footnote Information [Abstract]
Aggregate principal										$ 20,000
Original issue discount percent										8.00%
Notes payable | Notes Payable, Convertible, Due December 2022, August 2021 - Optional Notes
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount																		$ 30,375
Original issue discount percent			8.00%													8.00%		8.00%
Summary Of Debt [Abstract]
Net proceeds																		$ 30,375
Notes payable | Note Payable, Due March 2022
Debt Outstanding [Abstract]
Unpaid Principal Balance															$ 15,000
Debt Footnote Information [Abstract]
Unpaid Principal Balance															15,000
Increase in principal amount															667
Proceeds from increase in principal															0
Summary Of Debt [Abstract]
Outstanding principal															15,000
Debt Converted [Abstract]
Unpaid Principal Balance															15,000
Notes payable | Notes Payable, Convertible, Due December 2022, June 2021 Notes - Note 2
Debt Footnote Information [Abstract]
Aggregate principal										$ 20,000
Original issue discount percent										13.00%
Notes payable | Subtotal settlements just prior to the closing of the Business Combination
Debt Outstanding [Abstract]
Unpaid Principal Balance									75,100
Fair Value Measurement Adjustments								0
Debt Footnote Information [Abstract]
Unpaid Principal Balance									75,100
Summary Of Debt [Abstract]
Outstanding principal									75,100
Debt Converted [Abstract]
Unpaid Principal Balance									75,100
Accrued Interest at Settlement								23,275
Fair Value Measurement Adjustments								0
Cash Payment								0
Settlement with Commit-ment to Issue Class A Common Stock								$ (98,375)
Loss on Settlement																$ 0		0
Notes payable | Note Payable, Due Various Maturity Dates, At 12.00%
Debt Outstanding [Abstract]
Contractual Interest Rates								12.00%
Unpaid Principal Balance									56,000
Fair Value Measurement Adjustments								$ 0
Debt Footnote Information [Abstract]
Contractual Interest Rates								12.00%
Unpaid Principal Balance									56,000
Summary Of Debt [Abstract]
Outstanding principal									56,000
Debt Converted [Abstract]
Contractual Interest Rates								12.00%
Unpaid Principal Balance									56,000
Accrued Interest at Settlement								$ 17,177
Fair Value Measurement Adjustments								0
Cash Payment								0
Settlement with Commit-ment to Issue Class A Common Stock								$ (73,177)
Loss on Settlement																		0
Notes payable | Note Payable, Due June 30, 2021 At 12.00%
Debt Outstanding [Abstract]
Contractual Interest Rates								12.00%
Unpaid Principal Balance									19,100
Fair Value Measurement Adjustments								$ 0
Debt Footnote Information [Abstract]
Contractual Interest Rates								12.00%
Unpaid Principal Balance									19,100
Summary Of Debt [Abstract]
Outstanding principal									19,100
Debt Converted [Abstract]
Contractual Interest Rates								12.00%
Unpaid Principal Balance									19,100
Accrued Interest at Settlement								$ 6,098
Fair Value Measurement Adjustments								0
Cash Payment								0
Settlement with Commit-ment to Issue Class A Common Stock								$ (25,198)
Loss on Settlement																0		0
Notes payable | Subtotal settlements pursuant to the closing of the Business Combination
Debt Outstanding [Abstract]
Unpaid Principal Balance									85,202
Fair Value Measurement Adjustments							24,113
Debt Footnote Information [Abstract]
Unpaid Principal Balance									85,202
Summary Of Debt [Abstract]
Outstanding principal									85,202
Debt Converted [Abstract]
Unpaid Principal Balance									85,202
Accrued Interest at Settlement							7,435
Fair Value Measurement Adjustments							24,113
Cash Payment							(48,210)
Settlement with Commit-ment to Issue Class A Common Stock							$ (68,541)
Loss on Settlement																(25,908)		(25,908)
Notes payable | Note Payable, NPA Tranche, Due October 2021
Debt Outstanding [Abstract]
Contractual Interest Rates							10.00%
Unpaid Principal Balance									17,636
Fair Value Measurement Adjustments							$ 3,527
Debt Footnote Information [Abstract]
Contractual Interest Rates							10.00%
Unpaid Principal Balance									17,636
Summary Of Debt [Abstract]
Outstanding principal									17,636
Debt Converted [Abstract]
Contractual Interest Rates							10.00%
Unpaid Principal Balance									17,636
Accrued Interest at Settlement							$ 3,613
Fair Value Measurement Adjustments							3,527
Cash Payment							(17,636)
Settlement with Commit-ment to Issue Class A Common Stock							(7,141)
Loss on Settlement																(2,699)		2,699
Notes payable | January 13 And March 8, 2021 Notes, Due October 2021, Various Interest Rates
Debt Outstanding [Abstract]
Unpaid Principal Balance			$ 0						9,350							0		0
Fair Value Measurement Adjustments							4,301
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount									8,218
Unpaid Principal Balance			0						9,350							0		0
Debt issuance costs recorded in interest expense									532
Summary Of Debt [Abstract]
Outstanding principal			0						9,350							0		0
Accrued interest			0													0		0
Interest expense																82		632
Original issue discount									600
Debt issuance costs recorded in interest expense									532
Principal payments									9,350
Interest payments									632
Net proceeds									8,218
Debt Converted [Abstract]
Unpaid Principal Balance			0						9,350							0		0
Accrued Interest at Settlement							82
Fair Value Measurement Adjustments							4,301
Cash Payment							(11,582)
Settlement with Commit-ment to Issue Class A Common Stock							$ (2,151)
Loss on Settlement																(813)		813
Notes payable | January 13 Notes and March 12 Notes, Due October 2021 At 0.00%
Debt Outstanding [Abstract]
Contractual Interest Rates							0.00%
Unpaid Principal Balance			0						18,250							0		0
Fair Value Measurement Adjustments							$ 5,475
Debt Footnote Information [Abstract]
Proceeds from notes payable, net of original issuance discount									16,310
Contractual Interest Rates							0.00%
Term of warrants											7 years
Unpaid Principal Balance			0						18,250							0		0
Debt issuance costs recorded in interest expense									480
Warrant liability											$ 1,988
Summary Of Debt [Abstract]
Outstanding principal			0						18,250							0		0
Accrued interest			0													0		0
Interest expense																0		0
Original issue discount			1,460													1,460		1,460
Debt issuance costs recorded in interest expense									480
Principal payments									18,250
Interest payments									0
Net proceeds									16,310
Debt Converted [Abstract]
Contractual Interest Rates							0.00%
Unpaid Principal Balance			$ 0						18,250							0		0
Accrued Interest at Settlement							$ 0
Fair Value Measurement Adjustments							5,475
Cash Payment							0
Settlement with Commit-ment to Issue Class A Common Stock							$ (23,725)
Loss on Settlement																(8,968)		8,968
Notes payable | Note Payable, Due October 2021 At 12.75%
Debt Outstanding [Abstract]
Contractual Interest Rates							12.75%
Unpaid Principal Balance									15,667						15,000
Fair Value Measurement Adjustments							$ 4,700
Debt Footnote Information [Abstract]
Contractual Interest Rates							12.75%
Unpaid Principal Balance									15,667						15,000
Increase in principal amount															667
Proceeds from increase in principal															0
Summary Of Debt [Abstract]
Outstanding principal									15,667						15,000
Debt Converted [Abstract]
Contractual Interest Rates							12.75%
Unpaid Principal Balance									15,667						$ 15,000
Accrued Interest at Settlement							$ 0
Fair Value Measurement Adjustments							4,700
Cash Payment							0
Settlement with Commit-ment to Issue Class A Common Stock							$ (20,367)
Loss on Settlement																(7,698)		7,698
Notes payable | Note Payable, Due March 2022 At 0%
Debt Outstanding [Abstract]
Contractual Interest Rates							0.00%
Unpaid Principal Balance									15,667
Fair Value Measurement Adjustments							$ 6,110
Debt Footnote Information [Abstract]
Contractual Interest Rates							0.00%
Unpaid Principal Balance									15,667
Summary Of Debt [Abstract]
Outstanding principal									15,667
Debt Converted [Abstract]
Contractual Interest Rates							0.00%
Unpaid Principal Balance									15,667
Accrued Interest at Settlement							$ 270
Fair Value Measurement Adjustments							6,110
Cash Payment							(18,992)
Settlement with Commit-ment to Issue Class A Common Stock							$ (3,055)
Loss on Settlement																(1,155)		1,155
Notes payable | Notes Payable, China Various Other, Various Dates 2021
Debt Outstanding [Abstract]
Contractual Interest Rates							6.00%
Unpaid Principal Balance									4,917
Fair Value Measurement Adjustments							$ 0
Debt Footnote Information [Abstract]
Contractual Interest Rates							6.00%
Unpaid Principal Balance									4,917
Summary Of Debt [Abstract]
Outstanding principal									4,917
Debt Converted [Abstract]
Contractual Interest Rates							6.00%
Unpaid Principal Balance									4,917
Accrued Interest at Settlement							$ 757
Fair Value Measurement Adjustments							0
Cash Payment							0
Settlement with Commit-ment to Issue Class A Common Stock							$ (5,674)
Loss on Settlement																(2,145)		2,145
Notes payable | Notes Payable, China Various Other, Due On Demand At 9.00%
Debt Outstanding [Abstract]
Contractual Interest Rates							9.00%
Unpaid Principal Balance									3,715
Fair Value Measurement Adjustments							$ 0
Debt Footnote Information [Abstract]
Contractual Interest Rates							9.00%
Unpaid Principal Balance									3,715
Summary Of Debt [Abstract]
Outstanding principal									3,715
Debt Converted [Abstract]
Contractual Interest Rates							9.00%
Unpaid Principal Balance									$ 3,715
Accrued Interest at Settlement							$ 2,713
Fair Value Measurement Adjustments							0
Cash Payment							0
Settlement with Commit-ment to Issue Class A Common Stock							$ (6,428)
Loss on Settlement																$ (2,430)		$ 2,430
Notes payable | Note Payable, Convertible, Due October 2021 At 8.00%
Debt Outstanding [Abstract]
Contractual Interest Rates															8.00%
Debt Footnote Information [Abstract]
Aggregate principal															$ 3,750
Proceeds from notes payable, net of original issuance discount															3,285
Debt issuance costs paid by lender															$ 225
Original issue discount percent															6.50%
Contractual Interest Rates															8.00%
Percent of premium convertible into equity															50.00%
Summary Of Debt [Abstract]
Net proceeds															$ 3,285
Debt Converted [Abstract]
Contractual Interest Rates															8.00%
Notes payable | Note Payable, Convertible, Due October 2021 At 8.00% | Minimum
Debt Footnote Information [Abstract]
Liquidation premium, percent															35.00%
Notes payable | Note Payable, Convertible, Due October 2021 At 8.00% | Maximum
Debt Footnote Information [Abstract]
Liquidation premium, percent															45.00%
Notes payable | Note Payable, Convertible, Due October 2021 At 15.75%
Debt Outstanding [Abstract]
Contractual Interest Rates												15.75%
Debt Footnote Information [Abstract]
Aggregate principal												$ 5,600
Proceeds from notes payable, net of original issuance discount												4,933
Debt issuance costs paid by lender												$ 307
Original issue discount percent												6.50%
Contractual Interest Rates												15.75%
Percent of premium convertible into equity												50.00%
Summary Of Debt [Abstract]
Net proceeds												$ 4,933
Debt Converted [Abstract]
Contractual Interest Rates												15.75%
Notes payable | Note Payable, Convertible, Due October 2021 At 15.75% | Minimum
Debt Footnote Information [Abstract]
Liquidation premium, percent												42.00%
Notes payable | Note Payable, Convertible, Due October 2021 At 15.75% | Maximum
Debt Footnote Information [Abstract]
Liquidation premium, percent												52.00%
Notes payable | Notes Payable, Convertible, Due October 2021 At 0.00%, January 13 Notes
Debt Outstanding [Abstract]
Contractual Interest Rates															0.00%
Debt Footnote Information [Abstract]
Aggregate principal															$ 11,250
Proceeds from notes payable, net of original issuance discount															9,870
Debt issuance costs paid by lender															$ 480
Original issue discount percent															8.00%
Contractual Interest Rates															0.00%
Exercise price (in dollars per share) | $ / shares															$ 19.25
Aggregate shares able to be purchased from warrants issued (in shares) | shares															38,182
Summary Of Debt [Abstract]
Net proceeds															$ 9,870
Debt Converted [Abstract]
Contractual Interest Rates															0.00%
Notes payable | Notes Payable, Convertible, Due October 2021 At 0.00%, March 12 Notes
Debt Footnote Information [Abstract]
Aggregate principal											7,000
Proceeds from notes payable, net of original issuance discount											$ 6,440
Original issue discount percent											8.00%
Exercise price (in dollars per share) | $ / shares											$ 19.18
Aggregate shares able to be purchased from warrants issued (in shares) | shares											306,228
Shares issued from conversion (in shares) | shares											2,372,500
Summary Of Debt [Abstract]
Net proceeds											$ 6,440