An idea is worth next to nothing without a team to implement. You can't legally own an idea. So you have to build the business on top of it to give it value.
Here's some recommended reading:
I Had That Idea Years Ago
Do You Have An Invention?
Your Idea Has No Value
The Real Truth About Selling Your Invention
Idea or Implementation
Ideas are Easy, Doing Stuff is Hard
Tim Berry is the chairman of Eugene, Ore.-Palo Alto Software, which produces business-planning software. He founded Bplans.com and wrote The Plan-As-You-Go Business Plan, published by Entrepreneur Press. Berry is also a co-founder of HavePresence.com, a leader in a local angel-investment group and a judge of international business-plan competitions.