It is possible to restore deleted documents for 3 months after they have been deleted. This is done in the control panel and so only system administrators can do this.
1. Go to the control panel and select Documents in the list.
2. Click Deleted DocumentsDocuments to the right on the page.
3. To restore a document, click Restore.
You can also It is possible to restore multiple documents simultaneously by selecting the documents and clicking clicking Restore under Options for selected objects.