Failed attempt at understanding Japanese

I work in a building with a couple of Japanese companies, and sometimes I'm lucky to hear some Japanese conversations going on in the hall or elevator. Today a couple of Japanese businessmen got on the elevator and were talking about something--but I couldn't totally understand! I know that they were talking about business and work, but I couldn't get the details. Little did they know that I was intensely eavesdropping--they probably thought I was a clueless American :D But still, in a way I was clueless because I couldn't decipher everything they were saying.

This may not be a big deal to a lot of people, but to me it is because I still study and translate Japanese, but I think I've been away from Japan for too long and there aren't enough Japanese people around to get enough listening practice. Maybe those guys were using idioms or more polite language than I was used to--I don't know. But I hope to keep running into Japanese people to be able to improve my eavesdropping skills :D