Immaterial Corrections of Prior Period Financial Statements - Statement of Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue	$ 25,391	$ 29,939
Gross profit	20	10,713
Selling, general and administrative expenses	37,095	16,889
Depreciation and amortization	1,285	1,328
Total operating expenses	39,344	23,721
Loss from operations	(39,324)	(13,008)
Loss on disposal of subsidiaries, net	(180)	0
Other income (expense), net	191	(338)
Loss before income taxes and non-controlling interest	(28,132)	(13,793)
Income tax benefit	378	7,345
Income (loss) on investment	(1,338)	(154)
Net loss	(29,092)	(6,602)	$ (256,700)
Foreign currency translation adjustments	1,209	(693)
Comprehensive loss	(27,883)	(7,295)
Comprehensive loss attributable to non-controlling interest	296	433
Comprehensive loss attributable to Ideanomics, Inc. common shareholders	(27,587)	(6,862)
Sale of products
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue	14,877	4,515
Sale of services
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue	$ 10,460	25,210
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		19,096
Gross profit		10,842
Selling, general and administrative expenses		17,019
Depreciation and amortization		1,128
Total operating expenses		23,651
Loss from operations		(12,809)
Loss on disposal of subsidiaries, net		(212)
Other income (expense), net		(156)
Loss before income taxes and non-controlling interest		(13,594)
Income tax benefit		7,256
Income (loss) on investment		(237)
Net loss		(6,575)
Foreign currency translation adjustments		(860)
Comprehensive loss		(7,435)
Comprehensive loss attributable to non-controlling interest		552
Comprehensive loss attributable to Ideanomics, Inc. common shareholders		(6,883)
Previously Reported | Sale of products
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		4,354
Previously Reported | Sale of services
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		14,742
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		130
Gross profit		(129)
Selling, general and administrative expenses		(130)
Depreciation and amortization		200
Total operating expenses		70
Loss from operations		(199)
Loss on disposal of subsidiaries, net		182
Other income (expense), net		(182)
Loss before income taxes and non-controlling interest		(199)
Income tax benefit		89
Income (loss) on investment		83
Net loss		(27)
Foreign currency translation adjustments		167
Comprehensive loss		140
Comprehensive loss attributable to non-controlling interest		(119)
Comprehensive loss attributable to Ideanomics, Inc. common shareholders		21
Adjustment | Sale of products
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		161
Adjustment | Sale of services
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		$ 6