Doc box office: 'Janis' number one again

Laurie Anderson's Heart of a Dog climbs back into the top five

Janis Joplin photographed by Baron Wolman. Courtesy janisjoplin.com

Amy Berg's film on Janis Joplin is once again the top documentary at the North American box office.

Janis: Little Girl Blue earned $7,362 over the weekend to push its cume to $333,631, according to audience measurement firm Rentrak.

The film played on only eight screens, down from nine the previous week.

Coming in second over the weekend was Troublemakers: The Story of Land Art, directed by James Crump, According to the Troublemakers website, "The film features a cadre of renegade New York artists that sought to transcend the limitations of painting and sculpture by producing earthworks on a monumental scale in the desolate desert spaces of the American southwest."

Another New York-based artist, Laurie Anderson, saw her documentary return to the top five this weekend. Heart of a Dog's box office total after 13 weeks of release now stands at $335,785, Rentrak reported.

Laurie Anderson photographed in West Hollywood, California. Credit: Matt Carey

Rounding out the top five were Censored Voices, directed by Mor Loushy, and Hitchcock/Truffaut, from director Kent Jones. The latter film is based largely on audio of a conversation between the legendary filmmakers that took place in 1962. It features contemporary interviews with the likes of Martin Scorsese, Wes Anderson, David Fincher and Richard Linklater.