Bought this plant without an ID tag!

http://imgur.com/a/KKbLq

I'm in zone 5b. This plant is between 3 and 4 feet tall, and probably 5 feet wide. When the leaves get torn or damaged, they seem to repair themselves pretty quickly. The plant is happy (so far) in the humid, bright, indirect sunlight environment of the bathroom. So...what is it?! Thanks!