How to parse the outstanding shares from sec.gov Edgar 10-K 10-Q documents?

Does anyone know how I can extract the number of outstanding shares from the sec.gov Edgar 10-K and 10-Q documents?

Here's an example of the document: http://ift.tt/1tvCSJD ( or the html version http://ift.tt/1wX7ELl)

Is there a Python code to do this?

The shares are usually listed like this in the beginning of the file: "At October 16, 2014, there were 284,816,184 shares of Google’s Class A common stock outstanding, 54,210,195 shares of Google’s Class B common stock outstanding and 339,339,275 Class C capital stock outstanding."

Is there also any other way such as parsing the XBRL data?