Debt - Narrative (Details)															1 Months Ended					3 Months Ended		9 Months Ended		36 Months Ended
	Nov. 05, 2021 USD ($)	Nov. 05, 2021 USD ($)	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 ($)	Jun. 30, 2018 USD ($) $ / shares shares	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) shares convertibleNote	Sep. 30, 2020 USD ($)	Oct. 01, 2024 USD ($)	May 10, 2021 USD ($)	Dec. 31, 2020 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 $ / 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																						$ 15,008,000	$ 4,183,000
Warrants outstanding					$ 74,408,000															$ 103,492,000		103,492,000				$ 0
Interest paid																						1,188,000	1,121,000
Gain (loss) on extinguishment of debt																				0	$ 0	304,000	$ 0
Short-term debt																				621,000		621,000				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 | ¥								¥ 4,000,000
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
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%
Increase in short-term debt							$ 155,000	¥ 1,000,000
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																				2,000,000		2,000,000				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																				1,675,000		1,675,000				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				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
Line of credit | Amended PacWest Term Loan and Revolving Line of Credit | Subsequent Event
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 | Subsequent Event
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																				1,675,000		1,675,000				1,675,000
Outstanding amount																				1,675,000		1,675,000				1,675,000
Line of credit | PacWest Revolving Line of Credit | Revolving credit facility | Subsequent Event
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Repayment of debt		$ 1,675,000
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		0				3,496,000
Outstanding amount					$ 4,119,000															0		$ 0				3,606,000
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
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		$ 0				11,335,000
Outstanding amount																				0		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																			$ 141,000
Monthly loan payment																		$ 493,000
Repurchased face amount			12,000,000
Interest paid			61,000
Gain (loss) on extinguishment of debt			$ (1,585,000)
Unamortized discount																				577,000		577,000
Unamortized debt issuance costs																				1,008,000		1,008,000
Loans | Trinity term loan, due 2022 | Subsequent Event
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Monthly interest payment															$ 108,000
Effective interest rate															15.80%
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
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			6,250,000										1,844
Exercise price (in dollars per share) | $ / shares																			$ 35.42										$ 35.42			$ 35.42
Warrants outstanding																$ 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		0				2,000,000
Outstanding amount																				0		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		0				1,868,000
Outstanding amount																				$ 0		0				$ 1,868,000
Proceeds from issuance of long-term debt																	$ 1,868,000
Gain (loss) on extinguishment of debt																						$ 1,889,000