Revenue Recognition and Receivables Management has determined that all of the Companys leases with its various tenants are operating leases. Rental income with scheduled rent increases is recognized using the straight-line method over the respective non-cancelable terms of the leases. The aggregate excess of rental revenue recognized on a straight-line basis over the contractual base rents is included in receivables on the consolidated balance sheet. Leases also generally contain provisions under which the tenants reimburse the Company for a portion of property operating expenses and real estate taxes incurred, generally attributable to their respective allocable portions of gross leasable area. Such income is recognized in the periods earned. In addition, a limited number of operating leases contain contingent rent provisions under which tenants are required to pay, as additional rent, a percentage of their sales in excess of a specified amount. The Company defers recognition of contingent rental income until those specified sales targets are met. Revenues also include items such as lease termination fees, which tend to fluctuate more than rents from year to year. Termination fees are fees that the Company has agreed to accept in consideration for permitting certain tenants to terminate their lease prior to the contractual expiration. The Company recognizes lease termination income when the following conditions are met: (1) the lease termination agreement has been executed, (2) the lease termination fee is determinable, (3) all the Companys landlord services pursuant to the terminated lease have been rendered, and (4) collectability of the lease termination fee is assured. The Company must make estimates as to the collectability of its accounts receivable related to base rent, straight-line rent, percentage rent, expense reimbursements and other revenues. When management analyzes accounts receivable and evaluates the adequacy of the allowance for doubtful accounts, it considers such things as historical bad de