Why was this such a box office flop?

I just saw this movie for the first time and absolutely loved it. When it was released, I don’t remember seeing any trailers or promotion. I checked its box office and apparently it was a big flop which I don’t understand. It made less than $1 million worldwide with a budget of $20 million.

Why did this flop so much and why wasn’t it released to more theaters? I think this is the type of movie which is a little too smart and complex for the average audience member. That’s personally why I think it flopped.