Earnings (Loss) Per Common Share - Summary of Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net loss attributable to IDEX common shareholders	$ (9,790)	$ (26,578)	$ (10,364)	$ (38,928)
Basic weighted average common shares outstanding (in shares)	433,098,279	180,034,278	412,230,966	168,946,960
Effect of dilutive securities
Convertible preferred shares- Series A (in shares)	0	0	0	0
Convertible promissory notes (in shares)	0	0	0	0
Diluted potential common shares (in shares)	433,098,279	180,034,278	412,230,966	168,946,960
Earnings (loss) per share:
Basic (in dollars per share)	$ (0.02)	$ (0.15)	$ (0.03)	$ (0.23)
Diluted (in dollars per share)	$ (0.02)	$ (0.15)	$ (0.03)	$ (0.23)