>>> ensure that the document is print quality?
...for cmyk pictures used in lithography the rule of thumb is 1.5 to 2 times the line screen used to image film or plates for press, it is generally accepted that cmyk images need to be at around 300dpi at actual size. When scaling graphics larger in layout applications reduces the dpi, shrinking them increases the dpi...
...logos tend to be artworked in illustrator or an equivalent vector application. Vector graphics are device resolution independent meaning they can be scaled larger to any size and the output device will render the vector artwork the best it is able to. When reducing vector graphics note that thin key lines can caused problems, especially if in tints. As the graphic reduces in size lines can disappear if the output device isn't capable of imaging them. As a rule 0.25pt strokes are the very minimum a line should get...
...one bit bitmaps (line art graphics) are generally OK around 600dpi to 1400dpi (at actual size)...
Andrew