The other day, I was using a disk inventory program to delete some of my unwanted files and folders, and I accidentally deleted my Documents folder. It's now in the Trash. How do I restore it? I tried just dragging the folder back to the sidebar, but it doesn't show up the same. The icon in the sidebar shows as a regular folder instead of the pencil and paper that it originally had. Also, if I right-click it and click "Open Enclosing Folder," the Trash opens again, indicating that it's still in the Trash.
How can I restore my Documents folder/alias to its original state?

How can I restore my Documents folder/alias to its original state?