CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue:
Total revenue		$ 12,157	$ 7,586	$ 29,451	$ 15,957
Operating expenses:
Cost of goods sold		6,930	3,664	17,097	8,742
Research and development		15,043	5,823	37,206	15,457
Selling, general, and administrative		11,442	1,265	23,015	4,080
Total operating expenses		33,415	10,752	77,318	28,279
Loss from operations		(21,258)	(3,166)	(47,867)	(12,322)
Other income (expense), net:
Interest income		16	6	36	18
Interest expense		(25)	(517)	(1,175)	(1,620)
(Gain) loss from change in fair value remeasurement of SAFEs		0	(18,520)	21,600	(20,735)
Gain (loss) from change in fair value of warrants		(40,401)	0	(29,085)	0
Gain (loss) from change in fair value of earn-out liabilities		(45,516)	0	(27,677)	0
Gain (loss) from extinguishment of debt		0	0	304	0
Other income (expense)		(1,013)	28	(914)	140
Total other expense, net		(86,939)	(19,003)	(36,911)	(22,197)
Net loss before income taxes		(108,197)	(22,169)	(84,778)	(34,519)
Income tax (benefit) expense		(36)	(13)	34	9
Net loss		(108,161)	(22,156)	(84,812)	(34,528)
Less: Net loss attributable to noncontrolling interest		(28,512)	(197)	(22,127)	(590)
Net loss attributable to indie Semiconductor, Inc.		(79,649)	(21,959)	(62,685)	(33,938)
Net loss attributable to common shares —basic		(79,649)	(21,959)	(62,685)	(33,938)
Net loss attributable to common shares —diluted		$ (79,649)	$ (21,959)	$ (62,685)	$ (33,938)
Net loss per share attributable to common shares - basic (in dollars per unit)		$ (0.83)	$ (0.70)	$ (1.07)	$ (1.09)
Net loss per share attributable to common shares - diluted (in dollars per unit)		$ (0.83)	$ (0.70)	$ (1.07)	$ (1.09)
Weighted average common shares outstanding - basic (in shares)	[1]	96,368,379	31,349,643	58,791,245	31,153,933
Weighted average common shares outstanding - diluted (in shares)	[1]	96,368,379	31,349,643	58,791,245	31,153,933
Product revenue
Revenue:
Total revenue		$ 11,099	$ 5,732	$ 27,470	$ 13,294
Contract revenue
Revenue:
Total revenue		$ 1,058	$ 1,854	$ 1,981	$ 2,663

[1] (1) Retroactively restated to give effect to the reverse recapitalization.