America: Imagine the World Without Herthe latest documentary from conservative writer/director Dinesh D’Souza, is starting to ease its way out of theaters, but not without hitting another box-office milestone, passing Michael Moore’s Capitalism: A Love Story, to become the No. 6 political doc of all time. D’Souza’s book of the same name also had a major milestone, hitting No. 1 on the New York Times non-fiction bestseller list.

The film version reduced the number of screens carrying it by more than a third this week, dropping from 760 to 478, as its per-theater average dropped to $785. The resulting $375,000 in revenues was enough, however, to push the movie past $14 million in cumulative box office, and to pass Moore’s 2009 doc on all-time lists. Filmmakers noted America is only the 17th non-fiction film of any kind to pass the $14 million mark.

Another Moore film, 2004’s Fahrenheit 9/11, remains the all-time box-office champ among docs, political or otherwise. That film, largely a critique of President George W. Bush, cost an estimated $6 million to make and grossed $119.1 million in the United States, after an opening-weekend gross of $23.9 million.

America‘s backers say they intend to keep the film in at least some theaters through the end of summer.