An entity is demonstrably committed to pay termination benefits when, and only when, an entity has a detailed formal plan for the termination and is without realistic possibility of withdrawal. The detailed plan shall include, as a minimum: (a) the location, function, and approximate number of employees whose services are to be terminated; (b) the termination benefits for each job classification or function; and (c) the time at which the plan will be implemented. Implementation shall begin as soon as possible and the period of time to complete implementation shall be such that material changes to the plan are not likely.