removing and inserting tags in HTML

Question

Hi,

I need to convert HTML file to iXBRL format. iXBRL format is basically html with some embedded nodes or some information of html file wrapped under ixbrl tags. For this, I will need to SEARCH and REMOVE some nodes from HTML file and WRAP some nodes under iXBRL tags.

Can I use XML DOM in C# to achieve this objective. Am I right in assuming HTML file is a kind of XML file and therefore it can be completely manipulated using XML DOM classes of .Net?

Also if possible provide some code to help me out as I'm new to this.