I don't understand how somebody could steal that amount of money in less than a year without somebody catching on!
Its easy, no checks and balances. obviously he was trusted and no one ever looked at the original bank statements to verify what was in the accounts. Check out the following two Grand larcenies as examples:
Penn Yan man steals over 75K from a service organization over the period of two years. It was discovered when he went in the hospital and someone else wrote a check and it bounced. This happened despite a monthly meeting with three trustees of the club to go over finances. The trustees took him at his word and the nice computer printout he gave them every month telling them how much money they had. They never asked to see an actual bank statement.
Penn Yan bank teller steals over 12K from drawer while working at a local bank. Done over a period of several months. How did she do it? She realized that the bank was not following its own procedures on counting cash drawers like they were suppose to so she just kept "borrowing money" from her drawer.
Penn Yan teller steals 2K from proceeds of a business night deposit. Again, no checks and balances followed. Employee realized that the bank did not follow its procedure of having two people opening the night deposit and counting the money. They skipped the second part and let individual tellers count deposits. Made it easy to slip an envelope in her clothing and announce that there were only 11 drops in the bag that they gave her instead of 12!!