In early 2018, the SEC removed the ability to preview XBRL reports using their website. Filers can still download the SEC's previewer software and install it on a computer to preview reports locally. To download the SEC's rendering software, follow the instructions on this website.
You can also preview reports using GoFiler instead. GoFiler has a function built into the software to set up the SEC's previewer software and use it for previewing reports. See this article for more information.
