Acquisitions and Divestitures - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Total revenue	$ 117,617	$ 114,588
Net loss attributable to IDEX common shareholders	$ (257,281)	$ (94,097)
Earnings (loss) per share
Basic (in dollars per share)	$ (0.57)	$ (0.40)
Diluted (in dollars per share)	$ (0.57)	$ (0.40)
Weighted average shares outstanding
Basic (in shares)	447,829,204	232,707,448
Diluted (in shares)	447,829,204	232,707,448
DBOT
Business Acquisition [Line Items]
Total revenue			$ 44,675
Net loss attributable to IDEX common shareholders			$ (99,417)

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Pro forma basic earnings per share or earnings per unit, which is commonly presented in initial public offerings based on the terms of the offering.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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The weighted average number of shares or units and dilutive common stock or unit equivalents outstanding in the calculation of proforma diluted earnings per share (earnings per unit), which is commonly presented in initial public offerings based on the terms of the offering.

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