Parsing <TEXT> fails about py-xbrl HOT 4 CLOSED

Hello, please make sure to only parse documents that follow the XBRL or iXBRL specification.
The document https://www.sec.gov/Archives/edgar/data/0001634379/000156459020053234/mtcr-10q_20200930.htm is a normal HTML document without any XBRL stuff.
Use the Instance Document of this submission for extracting data with py-xbrl.

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Ah, this is just a different error indicating non ixbrl file.

I could add a pre-check in the lxml implementation that would filter this out.
Can we say that every valid htm (non xml), must contain "ixbrl" lowercase text to be valid?
Or as a warning to console that possibly invalid.

from py-xbrl.

I am not entirely sure what you mean with the following statement:

Can we say that every valid htm (non xml), must contain "ixbrl" lowercase text to be valid?

for an ixbrl instance document to be valid, it must comply with the iXBRL specification.

This includes many validation rules.
See for example the validation rules for the ix:nonFraction elements:
https://www.xbrl.org/specification/inlinexbrl-part1/rec-2013-11-18/inlinexbrl-part1-rec-2013-11-18.html#d1e5415

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But yes, you are right that it would be nice if the parser could check if a document contains valid xbrl taggings.

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