Debt - Narrative (Details) $ / shares in Units, $ in Thousands																				1 Months Ended					12 Months Ended		36 Months Ended
	Nov. 18, 2021 USD ($)	Nov. 18, 2021 CNY (¥)	Nov. 05, 2021 USD ($)	Nov. 05, 2021 USD ($)	Oct. 18, 2021 USD ($)	Oct. 18, 2021 CNY (¥)	Oct. 12, 2021 CAD ($)	Jun. 21, 2021 USD ($)	Jun. 17, 2021 USD ($)	Jun. 10, 2021 USD ($) shares	Jun. 09, 2021 shares	Apr. 29, 2021 USD ($)	Apr. 29, 2021 CNY (¥)	Nov. 13, 2020	Oct. 30, 2020 USD ($)	Jan. 31, 2020 USD ($)	Dec. 03, 2018	Dec. 03, 2017	Jan. 31, 2015 USD ($)	Oct. 31, 2021 USD ($)	Oct. 31, 2020 USD ($) shares	May 31, 2020 USD ($)	Nov. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2021 USD ($) convertibleNote shares	Dec. 31, 2020 USD ($)	Oct. 01, 2024 USD ($)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 CAD ($)	May 10, 2021 USD ($)	Oct. 15, 2020 USD ($)	Oct. 15, 2020 CNY (¥)	Oct. 01, 2020 $ / shares shares	Nov. 13, 2019 USD ($)	Nov. 13, 2019 CNY (¥)	Apr. 30, 2018 $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares	Aug. 31, 2017 shares	Dec. 04, 2012 USD ($) convertibleNote
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Repayment of debt																									$ 17,543,000	$ 4,183,000
Warrant Liability										$ 74,408,000															100,467,000	0
Cash paid for interest																									1,234,000	1,476,000
Gain (loss) on extinguishment of debt																									304,000	0
Proceeds from issuance of debt obligations																									775,000	6,112,000
Short-term debt																									810,000	459,000
Class A
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Conversion of convertible securities (in shares) | shares											284,925
Trinity term loan, due 2022 | Class G | Common warrant
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Warrants issued (in shares) | shares																																					6,250
Exercise price (in dollars per share) | $ / shares																																					$ 35.42
Short term loan agreement | Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount | ¥													¥ 4,000
Short term loan agreement | CITIC Group Corporation Ltd. | Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																																		$ 285,000	¥ 2,000,000
Interest rate																																		4.785%	4.785%
Extension term														12 months
Short term loan agreement | NCBC | Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																															$ 151,000	¥ 1,000,000
Interest rate					4.785%	4.785%																									4.785%	4.785%
Proceeds from issuance of debt obligations					$ 150,000	¥ 1,000,000						$ 155,000	¥ 1,000,000
Short-term debt | ¥																												¥ 2,000,000
Short term loan agreement | Bank of Nanjing | Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Interest rate	4.00%	4.00%
Proceeds from issuance of debt obligations	$ 453,000	¥ 3,000,000
Short-term debt																									787,000			¥ 5,000,000
TeraXion short term loan | Canada Economic Development | Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Interest rate							8.00%
Short-term debt																									23,000
Convertible debt | Embry Convertible Subordinated Notes Payable
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Number of convertible notes (in convertible notes) | convertibleNote																																							2
Principal amount																																							$ 3,500,000
Accrued interest										512,000																458,000													$ 107,000
Interest rate																	3.07%																						0.93%
Extension term																	36 months	12 months
Carrying amount										3,607,000															0	3,496,000
Outstanding amount										$ 4,119,000															$ 0	3,607,000
Convertible debt | First convertible subordinated note
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																																							$ 2,604,000
Convertible debt | First convertible subordinated note | Class A
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Number of convertible equity instruments (in shares) | shares																									185,000
Conversion of convertible securities (in shares) | shares											185,000
Convertible debt | Second convertible subordinated note
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																																							$ 1,003,000
Convertible debt | Second convertible subordinated note | Class C
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Number of convertible equity instruments (in shares) | convertibleNote																									100,000
Conversion of convertible securities (in shares) | shares											100,000
Line of credit | PacWest Term Loan and Revolving Line of Credit
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Outstanding amount																									$ 889,000
Minimum cash balance																									2,300,000
Line of credit facility, maximum borrowing capacity																									20,000,000	2,000,000
Line of credit | PacWest Term Loan and Revolving Line of Credit | Common warrant
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Warrants issued (in shares) | shares																																				3,388		3,388,000
Line of credit | PacWest Term Loan and Revolving Line of Credit | Revolving credit facility
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Interest rate																			4.25%
Outstanding amount																									0	1,675,000
Line of credit | PacWest Term Loan and Revolving Line of Credit | Secured debt
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																			$ 10,000,000
Interest rate																			4.50%
Outstanding amount																									0	0
Line of credit | PacWest Term Loan and Revolving Line of Credit | Prime rate | Revolving credit facility
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Basis spread on variable rate																			0.75%
Line of credit | PacWest Term Loan and Revolving Line of Credit | Prime rate | Secured debt
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Basis spread on variable rate																			1.00%
Line of credit | PacWest Term Loan and Revolving Line of Credit | Class A | Common warrant
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Conversion of convertible securities (in shares) | shares										82,187,000
Line of credit | Amended PacWest Term Loan and Revolving Line of Credit
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Line of credit facility, maximum borrowing capacity			$ 20,000,000	$ 20,000,000
Line of credit | Amended PacWest Term Loan and Revolving Line of Credit | Revolving credit facility
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Interest rate			2.10%	2.10%
Collateral percentage			102.50%
Line of credit | PacWest Revolving Line of Credit | Revolving credit facility
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Carrying amount																									0	1,675,000
Outstanding amount																									0	1,675,000
Repayment of debt				$ 1,675,000
Line of credit | TeraXion Line of Credit
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Carrying amount																									7,083,000	0
Outstanding amount																									7,102,000	0			$ 8,976
Line of credit facility, maximum borrowing capacity							$ 9,440
Monthly interest payment							$ 155
Line of credit | TeraXion Line of Credit | Prime rate
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Basis spread on variable rate							0.25%
Line of credit | TeraXion Line of Credit used as Securitization
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Line of credit facility, maximum borrowing capacity																													$ 7,000
Line of credit | TeraXion Line of Credit used as Securitization | Prime rate
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Basis spread on variable rate							0.25%
Loans | Trinity term loan, due 2022
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																					$ 12,000,000																$ 15,000,000
Interest rate																					10.75%																11.25%
Carrying amount															$ 11,325,000										0	11,335,000
Outstanding amount																									0	12,000,000
Repayment of debt								$ 13,261,000
Lender fee								1,200,000													$ 474,000
Proceeds from issuance of long-term debt															$ 194,000
Prepayment fee																					4.00%
Prepayment fee																					1.00%
End-of-term fee																					$ 720,000
Monthly interest payment																				$ 108,000				$ 141,000
Monthly loan payment																							$ 493,000
Effective interest rate																				15.80%
Repurchased face amount								12,000,000
Cash paid for interest								61,000
Gain (loss) on extinguishment of debt								$ (1,585,000)
Unamortized discount																									577,000
Unamortized debt issuance costs																									1,008,000
Loans | Trinity term loan, due 2022 | Forecast | Subsequent Event
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Monthly loan payment																											$ 391,000
Loans | Trinity term loan, due 2022 | Prime rate
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Basis spread on variable rate																					7.50%
Loans | Trinity term loan, due 2022 | Class A | Common warrant
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Conversion of convertible securities (in shares) | shares										196,346,000
Loans | Trinity term loan, due 2022 | Class G | Common warrant
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Warrants issued (in shares) | shares																					1,844,000												1,844				6,250
Exercise price (in dollars per share) | $ / shares																																	$ 35.42			$ 35.42	$ 35.42
Warrant Liability																					$ 405,000
Loans | Tropez note
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																$ 2,000,000
Interest rate																12.00%
Extension term																12 months
Carrying amount																									0	2,000,000
Outstanding amount																									0	2,000,000
Repayment of debt									$ 2,346,000
Renewal period																180 days
Loans | PPP loan, due 2022
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																														$ 1,868,000
Accrued interest																														$ 21,000
Interest rate																						1.00%
Carrying amount																									0	1,868,000
Outstanding amount																									0	$ 1,868,000
Proceeds from issuance of long-term debt																						$ 1,868,000
Gain (loss) on extinguishment of debt																									$ 1,889,000