Business Combinations - Additional Information (Details) - EMotion3D € in Thousands, $ in Thousands		3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 26, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 EUR (€)	Sep. 26, 2025 EUR (€)
Business Combination [Line Items]
Purchase price - equity consideration	$ 17,673
Purchase price - contingent considerations	7,287
Acquisition related costs		$ 184	$ 184
Business combination ceiling amount	4,163
Contingent Consideration Tranche One \| Forecast
Business Combination [Line Items]
Revenue threshold				$ 4,163	€ 3,650
Contingent Consideration Tranche Two
Business Combination [Line Items]
Revenue threshold	6,300
Contingent Consideration Tranche Three
Business Combination [Line Items]
Revenue threshold	8,400
Adjustment Holdback
Business Combination [Line Items]
Holdback amount	2,970
Purchase Price Holdback
Business Combination [Line Items]
Holdback amount	250
Subsidies Holdback
Business Combination [Line Items]
Holdback amount	720
Indemnity Holdback
Business Combination [Line Items]
Holdback amount	$ 2,000
Percentage of business acquisition contingent consideration liability due in 12 months	50.00%					50.00%
Indemnity Holdback \| Accrued Expenses And Other Current Liabilities
Business Combination [Line Items]
Holdback amount	$ 1,000
Percentage of business acquisition holdback amount	50.00%					50.00%
Indemnity Holdback \| Other Long-term Liabilities
Business Combination [Line Items]
Holdback amount	$ 1,000
Percentage of business acquisition holdback amount	50.00%					50.00%
Minimum \| Contingent Consideration Tranche Three
Business Combination [Line Items]
Revenue threshold	$ 8,400
Maximum
Business Combination [Line Items]
Contingent consideration	4,000
Maximum \| Contingent Consideration Tranche One
Business Combination [Line Items]
Contingent consideration \| €						€ 2,100
Maximum \| Contingent Consideration Tranche Two
Business Combination [Line Items]
Contingent consideration	6,000
Maximum \| Contingent Consideration Tranche Three
Business Combination [Line Items]
Contingent consideration	$ 1,250

indie Semiconductor, Inc. 10-Q