Revenue Recognition—All leases are classified as operating leases and minimum rents are recognized on a straight-line basis over the terms of the leases when collectability is reasonably assured and the tenant has taken possession or controls the physical use of the leased asset. The excess of rents recognized over amounts contractually due pursuant to the underlying leases is recorded as deferred rent. If the lease provides for tenant improvements, we determine whether the tenant improvements, for accounting purposes, are owned by the tenant or us. When we are the owner of the tenant improvements, the tenant is not considered to have taken physical possession or have control of the physical use of the leased asset until the tenant improvements are substantially completed. When the tenant is considered the owner of the improvements, any tenant improvement allowance that is funded is treated as incentive. Lease incentives paid to tenants are included in other assets and amortized as a reduction to rental revenue on a straight-line basis over the term of the related lease. Lease incentives of $12,648,000 and $13,084,000 are presented net of accumulated amortization of $5,029,000 and $4,303,000 at December 31, 2017 and 2016, respectively.
Reimbursements from tenants, consisting of amounts due from tenants for common area maintenance, real estate taxes, insurance, and other recoverable costs, are recognized as revenue in the period the expenses are incurred. Tenant reimbursements are recognized and presented on a gross basis when we are the primary obligor with respect to incurring expenses and with respect to having the credit risk.
In addition to minimum rents, certain leases provide for additional rents based upon varying percentages of tenants' sales in excess of annual minimums. Percentage rent is recognized once lessees' specified sales targets have been met. Included in rental and other property income for the years ended December 31, 2017, 2016 and 2015, is $304,000, $338,000 and $329,000, respectively, of percentage rent.
We derive parking revenues from leases with third-party operators. Our parking leases provide for additional rents based upon varying percentages of tenants' sales in excess of annual minimums. Parking percentage rent is recognized once lessees' specific sales targets have been met. Included in rental and other property income for the years ended December 31, 2017, 2016 and 2015, is $2,614,000, $3,156,000 and $2,290,000, respectively, of parking percentage rent.
Hotel room sales are recognized upon daily occupancy. Other hotel revenues are recognized as earned upon facility use or food and beverage consumption.
Interest income included in interest and other income or discontinued operations is comprised of interest earned on loans and our short-term investments and the accretion of net loan origination fees and discounts. Interest income on loans is accrued as earned with the accrual of interest suspended when the related loan becomes a Non-Accrual Loan.
About Revenue Disclosures
Revenue disclosures under ASC 606 explain how a company identifies performance obligations, allocates transaction prices, and determines when revenue is recognized. This section is essential for understanding whether reported revenue reflects genuine economic activity or aggressive accounting choices. Analysts examine the mix of point-in-time versus over-time recognition, which directly affects revenue timing and comparability.
Key signals: rising contract liabilities (deferred revenue) suggest strong future revenue visibility, while declining contract assets may indicate slowing project milestones. Watch for variable consideration estimates — rebates, returns, and performance bonuses that require management judgment. Significant changes in disaggregated revenue by geography or product line can reveal shifting business mix before it appears in headline numbers. Compare revenue growth against contract liability growth to assess sustainability, and scrutinize any changes in the timing of recognition that coincide with earnings pressure.