Documentation is the references and records that describe the structure, operations, strategy and maintenance of your company.
Documentation can include lab journals that plot your research and development, or manuals to help your employees keep on top of procedures and processes. Documentation includes documents and drawings.
Intellectual Asset Management means understanding that documentation is a valuable intellectual asset and how to protect that intellectual asset and convert it into a valuable product or service. For instance, your lab journal may be eventually become a patent or registered design which protects your product before it launches in the market place.