Enabling custom namespace schema map

[mikaelq]

Hello,

I'm very new to XBRL but am learning fast. I'm running into issues with py-xbrl parse files due to the namespace not being defined. I will likely be adding the namespaces to the ns_schema_map constant. But it made me think that there has a be a simpler method.

My first thought is to be able to define a custom ns_schema_map like you do with the cache. Since I'm so new I'm not sure if this makes sense or if there's an easy solution to my problem. If this makes sense I can implement it.

Any feedback would be much appreciated!

Thanks!
Mikael