If I kept a milage log for the year of 2016 but only documented business miles and not personal miles is this ok?

[Phillip1]

If you are deducting the standard mileage rate, business miles alone will be okay. 

However, if you are deducting actual expenses, you need to business mileage and you need a total mileage figure (tracked best by taking an odometer reading every 12/31). The deduction of actual business expenses require both business and total miles to calculate a business use percentage (Business Miles/Total Miles = Business Use Percent)