Debt Instrument, Convertible, Premium on Initial Conversion Price

No definition available.

Name:	indi_DebtInstrumentConvertiblePremiumOnInitialConversionPrice
Namespace Prefix:	indi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Convertible, Redemption Price Percentage

+ References

No definition available.

+ Details

Name:	indi_DebtInstrumentConvertibleRedemptionPricePercentage
Namespace Prefix:	indi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Noncash Interest Expense, Debt

+ References

No definition available.

+ Details

Name:	indi_NoncashInterestExpenseDebt
Namespace Prefix:	indi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Schedule of Long Term and Short Term Debt Instruments [Line Items]

+ References

No definition available.

+ Details

Name:	indi_ScheduleOfLongTermAndShortTermDebtInstrumentsLineItems
Namespace Prefix:	indi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Short-Term Debt, Gross

+ References

No definition available.

+ Details

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Namespace Prefix:	indi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face amount or stated value per share of common stock.

+ References

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
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Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

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Period Type:	instant

- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Period Type:	duration

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

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- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Period Type:	instant

- Definition

Net increase or decrease in the carrying amount of the debt instrument for the period.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of the required periodic payments applied to interest.

+ References

+ Details

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Period Type:	duration

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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Balance Type:	debit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Period Type:	instant

- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Balance Type:	debit
Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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Balance Type:	na
Period Type:	instant

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Period Type:

Debt - Narrative (Details)											3 Months Ended		12 Months Ended
Debt - Narrative (Details)	Nov. 21, 2022 USD ($) tradingDay $ / shares	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 ($)	Apr. 29, 2021 CNY (¥)	Mar. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2023 CAD ($)	Dec. 31, 2022 CAD ($)	Dec. 31, 2022 CNY (¥)	Nov. 17, 2022 USD ($)	Nov. 16, 2022 USD ($)	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																		$ 0.0001
Unamortized discount and issuance cost											$ 5,040,000		$ 5,298,000
Proceeds from issuance of debt obligations											$ 747,000	$ 315,000
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
Redemption of shares (in shares) \| shares											0		1,112,524
Treasury stock acquired, average cost per share \| $ / shares													$ 6.65
Stock repurchased during period, value													$ 7,404,000
Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Short-term debt											$ 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											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								$ 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				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		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 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											4.50%			4.50%
Exchange ratio	0.1155869
Debt instrument, convertible, conversion price \| $ / shares	$ 8.65
Debt instrument, convertible, premium on initial conversion price	30.00%
Share price \| $ / shares	$ 6.655
Unamortized discount and issuance cost	$ 5,374,000										$ 5,024,000		5,258,000
Carrying amount											154,976,000		154,742,000
Long-term debt, fair value											233,536,000		157,440,000
Noncash interest expense, debt											234,000
Outstanding amount											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	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	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 \| Minimum \| Debt Instrument, Redemption, Period Two
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Threshold trading days \| tradingDay	20
Senior notes \| 2027 Notes \| Maximum
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Debt instrument, convertible, conversion price \| $ / shares	$ 0.1502629
Senior notes \| 2027 Notes \| Initial Purchasers
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																		$ 140,000,000
Interest rate																		4.50%
Senior notes \| 2027 Notes \| Additional Notes
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Principal amount																		$ 20,000,000
Interest rate																		4.50%
Line of credit \| CIBC loan, due 2026
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Unamortized discount and issuance cost											16,000		14,000
Carrying amount											4,897,000		5,233,000
Line of credit facility, maximum borrowing capacity								9,440,000
Monthly interest payment								$ 155,000
Outstanding amount											4,913,000		5,247,000	$ 6,655,000	$ 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								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]
Outstanding amount											746,000
Loans
Schedule of Long Term and Short Term Debt Instruments [Line Items]
Unamortized discount and issuance cost											$ 5,040,000		$ 5,298,000