The Company follows the provisions of ASC Topic 420, "Exit or Disposal Cost Obligations", which addresses financial accounting and reporting for costs associated with exit or disposal activities. The statement requires companies to recognize costs associated with exit or disposal activities when they are incurred rather than at the date of a commitment to an exit or disposal plan. The Company records liabilities that primarily include estimated severance and other costs related to employee benefits and certain estimated costs to exit equipment and facility lease obligations and other service contracts and also costs for leases with no future economic benefit. As of
July 31, 2013, the Company's accrued restructuring balance totaled $5.2 million, of which remaining contractual obligations represented $1.2 million. These contractual obligations principally represent future obligations under non-cancelable real estate leases. Restructuring estimates relating to real estate leases involve consideration of a number of factors including: potential sublet rental rates, estimated vacancy period for the property, brokerage commissions and certain other costs. Estimates relating to potential sublet rates and expected vacancy periods are most likely to have a material impact on the Company's results of operations in the event that actual amounts differ significantly from estimates. These estimates involve judgment and uncertainties, and the settlement of these liabilities could differ materially from recorded amounts. As such, in the course of making such estimates management often uses third party real estate advisors to assist management in its assessment of the marketplace for purposes of estimating sublet rates and vacancy periods. A 10%-20% unfavorable settlement of our remaining restructuring liabilities, as compared to our current estimates, would decrease our income from continuing operations by approximately $0.5 millionto $1.0 million.
Share-Based Compensation Expense
The Company recognizes share-based compensation in accordance with the provisions of ASC Topic 718, "Compensation-Stock Compensation" ("ASC Topic 718") which requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and directors including employee stock options and employee stock purchases based on estimated fair values.
ASC Topic 718 requires companies to estimate the fair value of share-based payment awards on the date of grant. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods in the Company's Consolidated Statements of Operations.
ASC Topic 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company estimates its forfeiture rate based on a historical analysis of share-based payment award forfeitures. If actual forfeitures should vary from estimated forfeitures, adjustments to share-based compensation expense may be required. The Company uses the binomial-lattice option-pricing model ("binomial-lattice model") for valuation of share-based awards with time-based vesting. The Company believes that the binomial-lattice model is an accurate model for valuing employee stock options since it reflects the impact of stock price changes on option exercise behavior. For share-based awards based on market conditions, specifically, the Company's stock price, the compensation cost and derived service periods are estimated using the
Monte Carlovaluation method. The Company uses third party analyses to assist in developing the assumptions used in its binomial-lattice model and Monte Carlovaluations and the resulting fair value used to record compensation expense. The Company's determination of fair value of stock options on the date of grant using an option-pricing model is affected by the Company's stock price as well as assumptions regarding a number of highly complex and subjective variables. These