Summary of Significant Accounting Policies - Schedule of Balance Sheet Excluding Held for Sale Businesses (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 1,884			$ 3,245
Accounts receivable, net	3,066			4,269
Inventory, net	16,781			23,192
Current assets of discontinued operations	10,463			33,296
Total current assets	46,160			114,038
Property and equipment, net	11,128			7,845
Intangible assets, net	39,980			43,622
Operating lease right of use assets	10,814			10,533
Other non-current assets	2,866			2,276
Non-current assets of discontinued operations	3,082			19,212
Total assets	151,284			242,801
Accounts payable and accrued expenses	62,800
Current portion of operating lease liabilities	2,828			2,031
Other current liabilities	14,900
Current liabilities of discontinued operations	7,499			13,909
Total current liabilities	109,339			76,863
Operating lease liabilities - long term	11,244			8,566
Non-current liabilities of discontinued operations	1,938			5,210
Total liabilities	128,151			96,238
Equity
Common stock	1,499			597
Additional paid-in capital	1,071,219			1,004,082
Accumulated deficit	(1,049,603)			(866,450)
Accumulated other comprehensive loss	(6,684)			(6,104)
Total Ideanomics, Inc. stockholders' equity	16,431			132,125
Non-controlling interest	(1,248)			4,326
Total equity	15,183	$ 79,126	$ 89,780	136,451	$ 282,636	$ 319,427	$ 364,800	$ 365,368
Total liabilities, convertible redeemable preferred stock, and equity	151,284			242,801
Series A Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Convertible redeemable preferred stock	1,262			1,262
Series B Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Convertible redeemable preferred stock	1,863			8,850
Series C Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Convertible redeemable preferred stock	4,825			0
Pro Forma
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	386			1,103
Accounts receivable, net	14			30
Inventory, net	5			0
Prepaid expenses and other current assets	5,267			36,062
Current assets of discontinued operations	40,485			76,843
Total current assets	46,157			114,038
Property and equipment, net	2,911			782
Intangible assets, net	62			25
Operating lease right of use assets	4,510			3,516
Other non-current assets	477			7,798
Non-current assets of discontinued operations	97,167			116,780
Total assets	151,284			242,939
Accounts payable and accrued expenses	45,080			16,037
Current portion of operating lease liabilities	1,802			818
Other current liabilities	13,701			8,764
Current liabilities of discontinued operations	48,757			51,247
Total current liabilities	109,340			76,866
Operating lease liabilities - long term	5,699			2,662
Deferred tax liabilities	310			0
Non-current liabilities of discontinued operations	12,802			16,848
Total liabilities	128,151			96,376
Equity
Common stock	1,499			597
Additional paid-in capital	1,071,219			1,004,082
Accumulated deficit	(1,049,603)			(866,450)
Accumulated other comprehensive loss	(6,684)			(6,104)
Total Ideanomics, Inc. stockholders' equity	16,431			132,125
Non-controlling interest	(1,248)			4,326
Total equity	15,183			136,451
Total liabilities, convertible redeemable preferred stock, and equity	151,284			242,939
Pro Forma | Series A Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Convertible redeemable preferred stock	1,262			1,262
Pro Forma | Series B Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Convertible redeemable preferred stock	1,863			8,850
Pro Forma | Series C Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Convertible redeemable preferred stock	$ 4,825			$ 0