Is it better to detain, or reject?

Is it better to detain, or reject? References At some point in the game, you start getting bribes of 5 credits for every 2 immigrants you detain. Whilst slamming the detain button as soon as you see it is easy, it often takes a while to get a suspicious character out of my booth. Given that you don\'t NEED to detain people, doesn\'t it make more economic sense to always reject their visa and get 5 credits per immigrant, rather than 2.5 with detaining?