The Securities and Exchange Commission is allowing Inline XBRL to be filed. Here is a filing from one public company that was submitted in Inline XBRL and accepted by the SEC:
https://www.sec.gov/Archives/edgar/data/920760/000162828016017488/0001628280-16-017488-index.htm
You can go to that page and click on the link for the first document, the 10-Q HTML file, and you will be taken to the new SEC Inline XBRL Viewer. (Or just click here)
The SEC is seeking feedback. Please be sure to provide your feedback. That is how things get improved.
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SEC Inline XBRL Mockup Provided: https://www.sec.gov/ix?doc=ixviewer/samples/bst/out/bst-20160930.htm