It surely is a good idea to do this kind of training - this way you will be shaking a bit all muscle groups without overloading them right away. In bodybuilding you need to be gradual in everything, and when coming back, you need to be gradual with the weights you lift. If you are not going to lift heavy, then lift a lot with different muscles.
After a couple of weeks in this regimen, you can start lifting heavier and focusing on particular muscle groups on each training day. Personally, I do the same after my breaks - feels like my body is better conditioned after a couple of weeks with this regimen of training.