Don't know about that particular company but I do know it's an incredibly complicated process. Cinema organisations employ "bookers" at their head offices - these people negotiate with the distributors over how many screens / prints / weeks a particular title will be shown across their company. Lots of things are taken into account. If it's already been out in America, its admissions there will be a factor. If it's a sequel, the admissions of its prequel will be another. The amount of screens in a particular cinema will, too.
Take "The Soloist" as a recent example - cinemas all over the country were trailering this for months (and had "coming soon" posters up too) only to not get the film when it was released. (Although I think in that film's case there was some kind of delay in it being released here)
And I remember Braveheart showing for 82 weeks at the Odeon in Edinburgh!