Journaling trades - how much detail is too much?

I've been trying to get better about journaling my trades, not just entries and exits but the 'why' behind them, my emotional state, the news catalysts, etc. It feels like I spend almost as much time documenting as I do actually trading sometimes, especially with a few active positions. For those of you who've been doing this for a while, where's the line between thorough analysis and just creating busy work?