Debt - Narrative (Details)												3 Months Ended	9 Months Ended		12 Months Ended
	Nov. 21, 2022 USD ($) tradingDay $ / shares	Nov. 16, 2022 USD ($)	Jun. 24, 2022 USD ($)	Jun. 24, 2022 CNY (¥)	Jun. 21, 2022 USD ($)	Jun. 21, 2022 CNY (¥)	Oct. 18, 2021 USD ($)	Oct. 18, 2021 CNY (¥)	Oct. 12, 2021 CAD ($)	Apr. 29, 2021 USD ($)	Apr. 29, 2021 CNY (¥)	Sep. 30, 2023 USD ($) $ / shares	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares	Sep. 30, 2023 CAD ($)	Jun. 21, 2023 $ / shares	Dec. 31, 2022 CAD ($)	Dec. 31, 2022 CNY (¥)	Nov. 17, 2022 USD ($)	Aug. 26, 2022 $ / shares	Apr. 27, 2022 USD ($)	Apr. 27, 2022 CNY (¥)	Jan. 19, 2022 USD ($)	Jan. 19, 2022 CNY (¥)	Jan. 04, 2022 USD ($)	Oct. 15, 2020 USD ($)	Oct. 15, 2020 CNY (¥)
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Common stock, par value (in dollars per share) | $ / shares																					$ 0.0001
Unamortized discount and issuance cost												$ 4,552,000	$ 4,552,000		$ 5,298,000
Proceeds from issuance of short-term debt obligations													$ 1,717,000	$ 1,059,000
Convertible debt into Class A common shares
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Common stock, par value (in dollars per share) | $ / shares												$ 0.1000	$ 0.1000		$ 0.1000		$ 0.0001
Redemption of shares (in shares) | shares													0		1,112,524
Treasury stock acquired, average cost per share | $ / shares															$ 6.65
Share Repurchase in connection with 2027 Notes															$ 7,404,000
Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Short-term debt												$ 0	$ 0		1,450,000
CIBC loan, due 2026 | Prime rate | Revolving credit facility
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Basis spread on variable rate (in percent)													0.25%
TeraXion Line Of Credit Used As Securitization | Revolving credit facility
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Line of credit facility, maximum borrowing capacity																$ 5,000,000		$ 7,000,000
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																								$ 315,000	¥ 2,000,000
Interest rate (in percent)					3.70%	3.70%																		3.90%	3.90%
Increase in short-term debt					$ 448,000	¥ 3,000,000
Short-term debt															725,000				¥ 5,000,000
Short term loan agreement | NCBC | Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																						$ 304,000	¥ 2,000,000				$ 151,000	¥ 1,000,000
Interest rate (in percent)			3.15%	3.15%			4.785%	4.785%														4.26%	4.26%				4.785%	4.785%
Increase in short-term debt			$ 448,000	¥ 3,000,000
Short-term debt															704,000				¥ 5,000,000
Proceeds from issuance of short-term debt obligations							$ 150,000	¥ 1,000,000		$ 155,000	¥ 1,000,000
Promissory note, due 2023 | Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																										$ 10,000,000
Short-term debt															9,961,000
Short-term debt, gross															10,000,000
Senior notes | 2027 Notes
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																				$ 160,000,000
Interest rate (in percent)												4.50%	4.50%			4.50%
Exchange ratio	0.1155869
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares	$ 8.65
Debt instrument, convertible, premium on initial conversion price	30.00%
Share price (in dollars per share) | $ / shares	$ 6.655
Unamortized discount and issuance cost	$ 5,374,000											$ 4,538,000	$ 4,538,000		5,258,000
Carrying amount												155,462,000	155,462,000		154,742,000
Long-term debt, fair value												164,352,000	$ 164,352,000		$ 157,440,000
Debt instrument, fair value percent of aggregate principal amount (in percent)													102.72%		98.40%
Noncash interest expense, debt												246,000	$ 721,000
Outstanding amount												160,000,000	160,000,000		$ 160,000,000
Senior notes | 2027 Notes | Debt Instrument, Redemption, Period One
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Debt instrument, convertible, threshold consecutive trading days | tradingDay	30
Debt instrument, convertible, threshold percentage of stock price trigger	130.00%
Debt instrument, convertible, redemption price percentage (in percent)	98.00%
Senior notes | 2027 Notes | Debt Instrument, Redemption, Period Two
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Debt instrument, convertible, threshold consecutive trading days | tradingDay	30
Debt instrument, convertible, redemption price percentage (in percent)	100.00%
Senior notes | 2027 Notes | Minimum | Debt Instrument, Redemption, Period One
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Threshold trading days | tradingDay	20
Senior notes | 2027 Notes | Initial Purchasers
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount		$ 140,000,000
Interest rate (in percent)		4.50%
Exercisable period		30 days
Senior notes | 2027 Notes | Additional Notes
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount		$ 20,000,000
Interest rate (in percent)		4.50%
Senior notes | 2027 Notes | Additional Shares | Maximum
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Exchange ratio	0.1502629
Line of credit | CIBC loan, due 2026
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Unamortized discount and issuance cost												14,000	14,000		14,000
Carrying amount												4,203,000	4,203,000		5,233,000
Line of credit facility, maximum borrowing capacity									$ 9,440,000
Monthly interest payment									$ 155,000
Outstanding amount												4,217,000	4,217,000		5,247,000	$ 5,726,000		$ 7,119,000
Line of credit | CIBC loan, due 2026 | Prime rate
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Basis spread on variable rate (in percent)									0.25%
Line of credit | TeraXion Line Of Credit Used As Securitization | Revolving credit facility
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Unamortized discount and issuance cost												0	0		0
Carrying amount												1,717,000	1,717,000		0
Outstanding amount												$ 1,717,000	$ 1,717,000		$ 0	$ 2,332,000