Dan and Randy, thank you both for your help with this!
FYI....I asked our outside auditor and our bank attorney and they both stated that we should be safe with 5 years. However, after looking at the Indiana Code and the link you sent above, I did find information stating the statute of limitations is 6 years (at least from what my non-attorney brain understood). So, I have talked with our operations department and we have decided to go with 7 years to be safe!
Some days I feel like I need a law degree to understand my job........