I voted on the top-end, (fully published) since I have several modules that I have ran in the past that I could have sold as published modules. I guess the intent was to maybe make them available to others, though I never did. Mostly never completed them, is why. One module that I can think of, I had 13 full pages of text, descriptions, boxed-text, the whole nine-yards. I just never did complete it, even though I ran the adventure to completion.
Then I sometimes go for the other extreme. "PCs wander through the forest, and encounter a Satyr", and I'll jot a few other notes down on a piece of paper. Usually, those games suck, though.
I like having a methodical plan of events that I can go through. I'm currently working on a campaign for my group that I'll run *someday*, but I decided to start early so that I'd be ready for it when it happened. I have a page and a half of bullet-point "events" and then I've broken those up into sections that I think might consists of a nights' worth of game.
I'll take that, and develop a detailed map, and list out treasure, and monsters, complete with stat blocks (swiped from the SRD), and possibly make props of puzzles, and languages for them to decipher. (the campaign I'm planning will feature puzzles and riddles heavily).