Creating an outline around a shape creating by overlapping shapes

Hi all,

I'm new here and to Illustrator (self taught).  This is probaby a very simple question to answer.  I created this logo below by first making a compound path to create the hole in the large circle, then overlapped the four circle shapes over it.  Somewhere along the way I added lines along the main circle and figured out the live paint bucket tool to get the circle in the four color quadrants.

Now I need to add a white outline around the perimeter of the entire logo for printing on dark blue - and also need to have the white outline appear along the inside of the main circle.

All the commands I have tried in pathfinder don't seem to be working - if I can get an outline it also goes around each of the four circles.  Hope I am explaining this clearly.  Thank you for your help!