Loss Per Common Share - Schedule of Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Net loss from continuing operations	$ (204,850)	$ (213,633)
Net loss from discontinued operations	(29,276)	(68,452)
Preferred stock dividends	(481)	(56)
Net loss attributable to Ideanomics, Inc. common stockholders	$ (234,607)	$ (282,141)
Basic weighted average common shares outstanding (in shares)	9,971,038	4,101,624
Diluted weighted average common shares outstanding (in shares)	9,971,038	4,101,624
Basic and diluted
Basic loss per share from continuing operations (in dollars per share)	$ (20.59)	$ (52.10)
Diluted loss per share from continuing operations (in dollars per share)	(20.59)	(52.10)
Basic loss per share from discontinued operations (in dollars per share)	(2.94)	(16.69)
Diluted loss per share from discontinued operations (in dollars per share)	(2.94)	(16.69)
Basic loss per share (in dollars per share)	(23.53)	(68.79)
Diluted loss per share (in dollars per share)	$ (23.53)	$ (68.79)