"The fixed portion of the bonus is guaranteed and calculated to be equal to 50% of each year's annual salary." - this portion should surely be accrued.
"The incentive bonus payable for a given fiscal year for Mr. Sprague is typically determined by the Compensation Committee of the Board of Directors within 60 days after the close of that fiscal year." - this portion probably will not be accrued.
Perhaps it is an "a bit of both" thing.