Don't you wonder yourself what the extra value of displaying the same icon over and over again when you have only 2 options to be displayed in your column:
show icon X or show nothing
Instead, from a usability perspective I think it will be much "cleaner" to have the icon in the column header instead and if a document match the condition you display a checked box instead. something similar as in the attached image.
stop the wilderness of not understandable / little saying icons!