Revenues

On January 1, 2018, the Company adopted ASU No. 2014-09, "Revenue from Contracts with Customers" using a modified retrospective transition method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods after January 1, 2018 are presented under the new standard, while prior period amounts are not adjusted and continue to be reported in accordance with the old revenue recognition standard.

Based on a full analysis of applicable contracts, the Company determined that the new standard did not have an impact to reported revenues from prior or current periods.

Revenue Recognition

Revenue from Leasing

The Company generates revenues primarily from leasing apartment homes to tenants. Such leasing revenues are recorded when due from tenants and are recognized monthly as they are earned, which is not materially different than on a straight-line basis. Apartment homes are rented under short-term leases (generally, lease terms of 6 to 12 months). Revenues from tenants leasing commercial space are recorded on a straight-line basis over the life of the respective lease.

The Company also generates other property-related revenue associated with the leasing of apartment homes, including storage income, pet rent, and other miscellaneous revenue. Similar to rental income, such revenues are recorded when due from tenants and recognized monthly as they are earned.

Revenue from Contracts with Customers

Apart from rental and other property-related revenue, revenues from contracts with customers are recognized as control of the promised services is passed to the customer.

For customer contracts related to management and other fees from affiliates (which includes asset management and property management), the transaction price and amount of revenue to be recognized is determined each quarter based on the management fee calculated and earned for that month or quarter. The contract will contain a description of the service and the fee percentage for management services. Payments from such services are one month or one quarter in arrears of the service performed.

Disaggregated Revenue

The following table presents the Company’s revenues disaggregated by revenue source ($ in thousands):



	2018		2017		2016
Rental	$	1,296,435	$	1,263,476	$	1,201,995
Other property leasing revenue	94,435		90,849		83,728
Management and other fees from affiliates	9,183		9,574		8,278
Total revenues	$	1,400,053	$	1,363,899	$	1,294,001

The following table presents the Company’s rental and other property-leasing revenues disaggregated by geographic operating segment ($ in thousands):



	2018		2017		2016
Southern California	$	592,281	$	574,552	$	540,000
Northern California	522,561		505,313		453,140
Seattle Metro	236,525		229,871		217,259
Other real estate assets ⁽¹⁾	39,503		44,589		75,324
Total rental and other property leasing revenues	$	1,390,870	$	1,354,325	$	1,285,723

(1) Other real estate assets consists of revenue generated from retail space, commercial properties, held for sale properties, and disposition properties. Executive management does not evaluate such operating performance geographically.

The following table presents the Company’s rental and other property-leasing revenues disaggregated by current property category status ($ in thousands):



	2018		2017		2016
Same-property ⁽¹⁾	$	1,279,640	$	1,244,743	$	1,185,685
Acquisitions ⁽²⁾	42,481		39,289		—
Development ⁽³⁾	2,713		—		—
Redevelopment	20,345		19,641		18,737
Non-residential/other, net ⁽⁴⁾	45,691		50,652		81,301
Total rental and other property leasing revenues	$	1,390,870	$	1,354,325	$	1,285,723

(1) Stabilized properties consolidated by the Company for the years ended December 31, 2018, 2017 and 2016.

(2) Acquisitions includes properties acquired which did not have comparable stabilized results as of January 1, 2017.

(3) Development includes properties developed which did not have stabilized results as of January 1, 2017.

(4) Non-residential/other, net consists of revenue generated from retail space, commercial properties, held for sale properties, disposition properties and student housing.

Deferred Revenues and Remaining Performance Obligations

When cash payments are received or due in advance of the Company’s performance of contracts with customers, deferred revenue is recorded. The total deferred revenue balance related to such contracts was $6.2 million and $9.3 million as of December 31, 2018 and December 31, 2017, respectively, and was included in accounts payable and accrued liabilities within the accompanying consolidated balance sheets. The amount of revenue recognized for the year ended December 31, 2018 that was included in the December 31, 2017 deferred revenue balance was $3.1 million, which was included in interest and other income within the consolidated statements of income and comprehensive income.

A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in the new revenue recognition accounting standard. As of December 31, 2018, the Company had $6.2 million of remaining performance obligations. The Company expects to recognize approximately 37% of these remaining performance obligations in 2019, an additional 24% through 2021, and the remaining balance thereafter.

Practical Expedients

The Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less or when variable consideration is allocated entirely to a wholly unsatisfied performance obligation.