The SEC has posted newly summarized XBRL compliance information on their website (http://www.sec.gov/info/smallbus/secg/interactivedata-secg.htm ). The guidance is directed towards small businesses but contains a concise description of the program for all companies. Information covers: the three year phase-in period, certification requirements, third-party involvement, Modified liability, consequences of non-compliance, web posting, grace periods, due dates, applicable financial statements, required formats, optional early compliance, and other helpful resources.
The information is not meant to replace the rules as published in the EDGAR Filing Manual (Chapter 6, Interactive Data), located here: http://www.sec.gov/rules/final/2009/33-9002.pdf.
The bottom line is that each company will be responsible for the content in their SEC XBRL filings and should become very familiar with all reporting requirements. http://www.sec.gov/info/smallbus/secg/interactivedata-secg.htm is an excellent place for companies large and small to begin to explore the SEC’s XBRL mandate.