Douglas Emmett (DEI) 10-K 19 Feb 16 2015 FY Annual report Financial data

DEI XBRL Filing Information

DEI XBRL Filing Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Feb. 12, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Entity Registrant Name	Douglas Emmett Inc
Entity Central Index Key	1,364,250
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		147,339,187
Entity Public Float			$ 3,700
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets
Land	$ 906,601	$ 882,449
Buildings and improvements	5,687,145	5,585,360
Tenant improvements and lease intangibles	703,683	666,672
Property under development	26,900	23,122
Investment in real estate, gross	7,324,329	7,157,603
Less: accumulated depreciation and amortization	(1,703,375)	(1,531,157)
Investment in real estate, net	5,620,954	5,626,446
Cash and cash equivalents	101,798	18,823
Tenant receivables, net	1,907	2,143
Deferred rent receivables, net	79,837	74,997
Acquired lease intangible assets, net	4,484	3,527
Interest rate contract assets	4,830	0
Investment in unconsolidated real estate funds	164,631	171,390
Other assets	87,720	41,647
Total assets	6,066,161	5,938,973
Liabilities
Secured notes payable and revolving credit facility, net	3,611,276	3,419,667
Interest payable, accounts payable and deferred revenue	57,417	54,364
Security deposits	38,683	37,450
Acquired lease intangible liabilities, net	28,605	45,959
Interest rate contract liabilities	16,310	37,386
Dividends payable	32,322	30,423
Total liabilities	3,784,613	3,625,249
Douglas Emmett, Inc. stockholders' equity:
Common Stock, $0.01 par value 750,000,000 authorized, 146,919,187 and 144,869,101 outstanding at December 31, 2015 and December 31, 2014, respectively	1,469	1,449
Additional paid-in capital	2,706,753	2,678,798
Accumulated other comprehensive loss	(9,285)	(30,089)
Accumulated deficit	(772,726)	(706,700)
Total Douglas Emmett, Inc. stockholders' equity	1,926,211	1,943,458
Noncontrolling interests	355,337	370,266
Total equity	2,281,548	2,313,724
Total liabilities and equity	$ 6,066,161	$ 5,938,973

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	750,000,000	750,000,000
Common stock, shares outstanding (in shares)	146,919,187	144,869,101

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Office rental
Rental revenues	$ 412,448	$ 396,524	$ 394,739
Tenant recoveries	43,139	44,461	45,144
Parking and other income	85,388	78,420	74,700
Total office revenues	540,975	519,405	514,583
Multifamily rental
Rental revenues	87,907	74,289	71,209
Parking and other income	6,892	5,828	5,727
Total multifamily revenues	94,799	80,117	76,936
Total revenues	635,774	599,522	591,519
Operating Expenses
Office expenses	186,556	181,160	174,935
Multifamily expenses	23,862	20,664	19,928
General and administrative	30,496	27,332	26,614
Depreciation and amortization	205,333	202,512	191,351
Total operating expenses	446,247	431,668	412,828
Operating income	189,527	167,854	178,691
Other income	15,228	17,675	6,402
Other expenses	(6,470)	(7,095)	(4,199)
Income, including depreciation, from unconsolidated real estate funds	7,694	3,713	3,098
Interest expense	(135,453)	(128,507)	(130,548)
Acquisition-related expenses	(1,771)	(786)	(607)
Net income	68,755	52,854	52,837
Less: Net income attributable to noncontrolling interests	(10,371)	(8,233)	(7,526)
Net income attributable to common stockholders	$ 58,384	$ 44,621	$ 45,311
Net income attributable to common stockholders per share – basic (usd per share)	$ 0.398	$ 0.309	$ 0.317
Net income attributable to common stockholders per share – diluted (usd per share)	$ 0.386	$ 0.300	$ 0.309

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 68,755	$ 52,854	$ 52,837
Other comprehensive income: cash flow hedges	24,850	25,045	39,562
Comprehensive income	93,605	77,899	92,399
Less: comprehensive income attributable to noncontrolling interests	(14,417)	(12,813)	(14,651)
Comprehensive income attributable to common stockholders	$ 79,188	$ 65,086	$ 77,748

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Noncontrolling Interests
Beginning balance, shares at Dec. 31, 2012		141,246,000
Stockholders' Equity [Roll Forward]
Conversion of OP Units (in shares)	1,400,000	1,359,000
Exercise of stock options (in shares)		0
Ending balance, shares at Dec. 31, 2013		142,605,000
Beginning balance at Dec. 31, 2012	$ 2,390,459	$ 1,412	$ 2,635,408	$ (82,991)	$ (574,173)	$ 410,803
Stockholders' Equity [Roll Forward]
Conversion of OP Units	18,684	14	18,670			(18,684)
Repurchase of OP Units	(352)		(173)			(180)
Repurchase of stock options	$ 0		0
Exercise of stock options		0	0
Cash flow hedge adjustment	$ 39,562			32,437		7,125
Net income	52,837					7,526
Net income attributable to common stockholders	45,311				45,311
Dividends	(105,519)				(105,518)
Contributions	653					653
Distributions	(21,237)					(21,237)
Issuance of OP Units for cash	0					0
Stock-based compensation	10,805					10,805
Ending balance at Dec. 31, 2013	$ 2,367,208	$ 1,426	2,653,905	(50,554)	(634,380)	396,811
Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 0.74
Conversion of OP Units (in shares)	2,200,000	2,224,000
Exercise of stock options (in shares)	40,000	40,000
Ending balance, shares at Dec. 31, 2014	144,869,101	144,869,000
Stockholders' Equity [Roll Forward]
Conversion of OP Units	$ 30,035	$ 22	30,013			(30,035)
Repurchase of OP Units	(2,826)		(1,197)			(1,629)
Repurchase of stock options	(4,524)		(4,524)
Exercise of stock options	602	1	601
Cash flow hedge adjustment	25,045			20,465		4,580
Net income	52,854					8,233
Net income attributable to common stockholders	44,621				44,621
Dividends	(116,941)				(116,941)
Contributions	290					290
Distributions	(22,813)					(22,813)
Issuance of OP Units for cash	0					0
Stock-based compensation	14,829					14,829
Ending balance at Dec. 31, 2014	$ 2,313,724	$ 1,449	2,678,798	(30,089)	(706,700)	370,266
Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 0.81
Conversion of OP Units (in shares)	1,800,000	1,776,000
Exercise of stock options (in shares)	274,000	274,000
Ending balance, shares at Dec. 31, 2015	146,919,187	146,919,000
Stockholders' Equity [Roll Forward]
Conversion of OP Units	$ 23,703	$ 17	23,686			(23,703)
Repurchase of OP Units	0		0			0
Repurchase of stock options	0		0
Exercise of stock options	4,272	3	4,269
Cash flow hedge adjustment	24,850			20,804		4,046
Net income	68,755					10,371
Net income attributable to common stockholders	58,384				58,384
Dividends	(124,410)				(124,410)
Contributions	0					0
Distributions	(23,265)					(23,265)
Issuance of OP Units for cash	1,000					1,000
Stock-based compensation	16,622					16,622
Ending balance at Dec. 31, 2015	$ 2,281,548	$ 1,469	$ 2,706,753	$ (9,285)	$ (772,726)	$ 355,337
Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 0.85

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Activities
Net income	$ 68,755	$ 52,854	$ 52,837
Adjustments to reconcile net income to net cash provided by operating activities:
Income, including depreciation, from unconsolidated real estate funds	(7,694)	(3,713)	(3,098)
Gain from insurance recoveries for damage to real estate	(82)	(6,621)	(431)
Depreciation and amortization	205,333	202,512	191,351
Net accretion of acquired lease intangibles	(19,100)	(16,084)	(15,693)
Straight-line rent	(4,840)	(5,335)	(6,470)
Increase (decrease) in the allowance for doubtful accounts	223	(461)	(98)
Amortization of deferred loan costs	6,969	4,097	4,214
Non-cash market value adjustments on interest rate contracts	(66)	50	88
Amortization of stock-based compensation	15,234	13,722	10,005
Operating distributions from unconsolidated real estate funds	1,068	909	783
Change in working capital components:
Tenant receivables	13	78	(331)
Interest payable, accounts payable and deferred revenue	4,557	2,668	8,816
Security deposits	1,233	1,980	1,186
Other assets	(176)	59	383
Net cash provided by operating activities	271,427	246,715	243,542
Investing Activities
Capital expenditures for improvements to real estate	(75,541)	(84,444)	(66,907)
Capital expenditures for developments	(3,720)	(4,259)	(549)
Insurance recoveries for damage to real estate	82	6,506	431
Property acquisitions	(89,906)	(220,469)	(150,000)
Deposits for property acquisitions	(75,000)	(2,500)	0
Note receivable	0	(27,500)	0
Proceeds from repayment of note receivable	1,000	0	0
Loans to related parties	(2,000)	0	(2,882)
Loan payments received from related parties	2,719	1,187	213
Contributions to unconsolidated real estate funds	(11)	0	(26,405)
Acquisitions of additional interests in unconsolidated real estate funds	0	0	(8,004)
Capital distributions from unconsolidated real estate funds	10,788	11,514	7,518
Net cash used in investing activities	(231,589)	(319,965)	(246,585)
Financing Activities
Proceeds from borrowings	1,614,400	551,000	40,000
Repayment of borrowings	(1,415,528)	(356,850)	(240,000)
Loan costs	(14,232)	(1,974)	(2,596)
Contributions by noncontrolling interests	0	290	653
Distributions to noncontrolling interests	(23,265)	(22,813)	(21,237)
Cash dividends to common stockholders	(122,510)	(115,039)	(102,422)
Exercise of stock options	4,272	603	0
Repurchase of stock options	0	(4,524)	0
Repurchase of OP Units	0	(2,826)	(352)
Net cash provided by (used in) financing activities	43,137	47,867	(325,954)
Increase (decrease) in cash and cash equivalents	82,975	(25,383)	(328,997)
Cash and cash equivalents at beginning of year	18,823	44,206	373,203
Cash and cash equivalents at end of year	101,798	18,823	44,206
SUPPLEMENTAL CASH FLOWS INFORMATION
Cash paid for interest, net of capitalized interest of $940, $294 and $75 for 2015, 2014 and 2013, respectively.	128,178	123,967	127,185
Decrease in accrual for capital expenditures for improvements to real estate and developments	1,504	952	1,224
Capitalized stock-based compensation for improvements to real estate and developments	1,358	1,086	800
Write-off of fully depreciated and amortized tenant improvements and lease intangibles	33,115	167,174	0
Write-off of fully amortized acquired lease intangible assets	220	32,230	0
Write-off of fully accreted acquired lease intangible liabilities	49,576	137,313	0
Settlement of note receivable in exchange for land and building acquired	26,500	0	0
Issuance of OP Units in exchange for land and building acquired	1,000	0	0
Application of deposit to purchase price of property	2,500	0	0
(Loss) gain from market value adjustments	(11,549)	(11,116)	903
Dividends declared	124,410	116,941	105,519
Common stock issued in exchange for OP Units	23,703	30,035	18,684
Fund X [Member]
SUPPLEMENTAL CASH FLOWS INFORMATION
(Loss) gain from market value adjustments	$ (1,922)	$ (1,767)	$ 1,779

Consolidated Statements of Cas8

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]
Capitalized interest	$ (940)	$ (294)	$ (75)

Overview

Overview	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Overview	Overview Organization and Description of Business Douglas Emmett, Inc. is a fully integrated, self-administered and self-managed REIT. We are one of the largest owners and operators of high-quality office and multifamily properties in Los Angeles County, California and Honolulu, Hawaii. We focus on owning, acquiring, developing and managing a substantial share of top-tier office properties and premier multifamily communities in neighborhoods that possess significant supply constraints, high-end executive housing and key lifestyle amenities. Through our interest in our Operating Partnership and its subsidiaries, as well as our investment in our Funds, we own or partially own, acquire, develop and manage real estate, consisting primarily of office and multifamily properties in Los Angeles County, California and Honolulu, Hawaii. As of December 31, 2015 , we owned a consolidated portfolio of fifty-four office properties (including ancillary retail space) and ten multifamily properties, as well as the fee interests in two parcels of land subject to ground leases from which we earn ground rent income. Alongside our consolidated portfolio, we also manage and own equity interests in our Funds which, at December 31, 2015 , owned eight additional office properties, for a combined sixty-two office properties in our total portfolio. The terms "us," "we" and "our" used in these financial statements refer to Douglas Emmett, Inc. and its subsidiaries. Basis of Presentation The accompanying financial statements are the consolidated financial statements of Douglas Emmett, Inc. and its subsidiaries, including our Operating Partnership. All significant intercompany balances and transactions have been eliminated in our consolidated financial statements, and to conform to additional line items added in the current period presentation, we have reported more detail for the prior periods. During the current reporting period, we reported our proceeds from, and repayments of, borrowings related to our credit facility on a gross basis in the accompanying Consolidated Statements of Cash Flows, and we reclassified the prior periods, which were previously reported on a net basis, to conform to the current period presentation. The change in presentation did not change the net cash provided by (used in) financing activities that we previously reported for the prior periods. During the current reporting period, we reclassified deferred loan fees from Other assets to Secured notes payable and revolving credit facility in the accompanying Consolidated Balance Sheets, and we reclassified the prior period to conform to the current period presentation. See "New Accounting Pronouncements" in Note 2 for more detail regarding the reclassification of deferred loan fees. The accompanying financial statements have been prepared pursuant to the rules and regulations of the SEC in conformity with US GAAP as established by the FASB in the ASC, including modifications issued under ASUs. The accompanying financial statements include, in our opinion, all adjustments, consisting of normal recurring adjustments, necessary to present fairly the financial information set forth therein. Any reference to the number of properties, square footage, per square footage amounts, apartment units and geography, are unaudited and outside the scope of our independent registered public accounting firm’s audit of our financial statements in accordance with the standards of the PCAOB.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. Investment in Real Estate We account for acquisitions of properties as business combinations, utilizing the purchase method, and include the results of operations of the acquired properties in our results of operations from their respective dates of acquisition. We expense transaction costs related to acquisitions when they are incurred. When we acquire a property, we determine the fair values of the tangible assets on an ‘‘as-if-vacant’’ basis. We use estimates of future cash flows, comparable sales, other relevant information obtained in connection with the acquisition of the property, and other valuation techniques to allocate the purchase price of each acquired property between land, buildings and improvements, tenant improvements and leasing costs, and identifiable intangible assets and liabilities such as amounts related to in-place at-market leases, acquired above- and below-market tenant leases (including for lease renewal options), and acquired above- and below-market ground leases (including for lease renewal options). The estimated fair value of acquired in-place at-market tenant leases represents the estimated costs that we would have incurred to lease the property to the occupancy level of the property at the date of acquisition, including the fair value of leasing commissions and legal costs. Additionally, we evaluate the time period over which we expect such occupancy level to be achieved and include an estimate of the net operating costs (primarily real estate taxes, insurance and utilities) incurred during the lease-up period. We record above-market and below-market in-place lease intangibles as an asset or liability based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between the contractual amounts to be received or paid pursuant to the in-place tenant or ground leases, respectively, and our estimate of fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining non-cancelable term of the lease. Our initial valuations and allocations are subject to change until the allocation is finalized within 12 months after the acquisition date. See Note 3 for our property acquisition disclosures. Buildings and site improvements are depreciated on a straight-line basis using an estimated life of forty years for buildings and fifteen years for site improvements. We carry buildings and site improvements, offset by the related accumulated depreciation and any impairment charges, on our balance sheet until they are sold. Tenant improvements are depreciated on a straight-line basis over the life of the related lease, with any remaining balance depreciated in the period of any early termination of that lease. During 2015 and 2014 , we removed the cost and accumulated depreciation of $16.0 million and $84.6 million , respectively, of fully depreciated tenant improvements determined to be no longer in use from our balance sheet. Acquired in-place leases are amortized on a straight line basis over the weighted average remaining term of the acquired in-place leases. We carry acquired in-place leases, offset by the related accumulated amortization, on our balance sheet until the related building is either sold or impaired. Leasing intangibles are amortized on a straight-line basis over the related lease term, with any remaining balance amortized in the period of any early termination of that lease. During 2015 and 2014 , we removed the cost and accumulated amortization of $17.1 million and $82.6 million , respectively, of fully amortized leasing intangibles from our balance sheet. Acquired above- and below-market tenant leases are amortized/accreted on a straight line basis over the life of the related lease and recorded as either an increase (for below-market leases) or a decrease (for above-market leases) to rental revenue. During 2015 and 2014 , we removed the cost and accumulated amortization/accretion of $0.2 million and $ 32.2 million , respectively, of fully amortized above-market tenant leases and $37.4 million and $ 137.3 million , respectively, of fully accreted below-market tenant leases from our balance sheet. Acquired above- and below-market ground leases, from which we earn ground rent income, are amortized/accreted on a straight line basis over the life of the lease and recorded either as an increase (for below-market leases) or a decrease (for above-market leases) to rental revenue. Acquired above- and below-market ground leases, for which we incur ground rent expense, are accreted/ amortized over the life of the lease and recorded either as an increase (for below-market leases) or a decrease (for above-market leases) to expense. During 2015 , we removed the cost and accumulated accretion of $12.2 million for a fully accreted above-market ground lease from our balance sheet. When assets are sold or retired, their cost and related accumulated depreciation or amortization are removed from our balance sheet with the resulting gains or losses, if any, reflected in our results of operations for the respective period. We did not dispose of any properties during 2015 , 2014 or 2013 . Repairs and maintenance are recorded as expense when incurred. Costs incurred during the period of construction of real estate are capitalized. Cost capitalization of development and redevelopment activities begins during the predevelopment period, which we define as the activities that are necessary to begin the development of the property. We cease capitalization upon substantial completion of the project, but no later than one year from cessation of major construction activity. We also cease capitalization when activities necessary to prepare the property for its intended use have been suspended. Capitalized costs are included in Property under development in our Consolidated Balance Sheets. Once major construction activity has ceased and the development or redevelopment property is in the lease-up phase, the capitalized costs are transferred to (i) Land, (ii) Building and improvements and (iii) Tenant improvements and lease intangibles on our Consolidated Balance Sheets as the historical cost of the property. During 2015 and 2014 , we capitalized $3.8 million and $4.3 million of costs related to our multifamily developments, respectively, which included $940 thousand and $294 thousand of capitalized interest, respectively. Investment in Unconsolidated Real Estate Funds At December 31, 2015 , we managed and held equity interests in two Funds: Fund X and Partnership X. We held a 68.61% interest in Fund X, and an aggregate 24.25% interest in the properties held by Partnership X and its subsidiaries. We account for our investments in the Funds using the equity method because we have significant influence but not control over the entities and our Funds do not qualify as variable interest entities. Our investment balance represents our share of the net assets of the combined Funds, additional basis (primarily due to the inclusion of the cost of raising capital that is accounted for as part of our investment basis) of $2.9 million as of December 31, 2015 and 2014 , and notes receivable with a total outstanding balance of $0.8 million and $1.5 million as of December 31, 2015 and 2014 , respectively. See Note 5 for our Fund disclosures. Impairment of Long-Lived Assets We periodically assess whether there has been an impairment in the value of our long-lived assets whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. An impairment charge is recorded when events or change in circumstances indicate that a decline in the fair value below the carrying value has occurred and such decline is other-than-temporary. Recoverability of assets to be held and used is measured by a comparison of the carrying value to the undiscounted future cash flows expected to be generated by the asset. If the carrying value exceeds the estimated undiscounted future cash flows, an impairment loss is recorded equal to the difference between the asset’s carrying value and its fair value based on the estimated discounted future cash flows. Based upon such periodic assessments, no impairments occurred during 2015 , 2014 or 2013 . We periodically assess whether there has been an impairment in the value of our investments in our Funds whenever events or changes in circumstances indicate that the carrying value of our investments in our Funds may not be recoverable. An impairment charge is recorded when events or changes in circumstances indicate that a decline in the fair value below the carrying value has occurred and such decline is other-than-temporary. The ultimate realization of the investments in our Funds is dependent upon a number of factors, including the performance of the investment and market conditions. Based upon such periodic assessments, no impairments occurred during 2015 , 2014 or 2013 . Assets to be disposed of are reported at the lower of their carrying value or fair value, less costs to sell. An asset is classified as an asset held for sale when it meets certain requirements, including the approval of the sale of the asset, the marketing of the asset for sale, and our expectation that the sale will likely occur within the next 12 months. Upon classification of an asset as held for disposition, the carrying value of the asset, excluding long-term debt, is presented on the balance sheet as properties held for disposition, we cease to depreciate the asset, and the operating results of the asset may be presented as discontinued operations for all periods presented. As of December 31, 2015 , we did not have any assets classified as held for sale. Cash and Cash Equivalents We consider short-term investments with maturities of three months or less when purchased to be cash equivalents. Revenue and Gain Recognition We recognize revenue when four basic criteria are met: (i) persuasive evidence of an arrangement exists, (ii) services are rendered, (iii) the fee is fixed and determinable and (iv) collectibility is reasonably assured. All of our tenant leases are classified as operating leases. For all lease terms exceeding one year, rental income is recognized on a straight-line basis over the term of the lease. Deferred rent receivables represent rental revenue recognized on a straight-line basis in excess of billed rents. Rental revenue from month-to-month leases or leases with no scheduled rent increases or other adjustments are recognized on a monthly basis when earned. Lease termination fees, which are included in rental revenues in the accompanying Consolidated Statements of Operations, are recognized when the related lease is canceled and we have no continuing obligation to provide services to the former tenant. We recorded lease termination revenue of $2.2 million , $2.6 million , $0.7 million during 2015 , 2014 and 2013 , respectively. We record tenant improvements and deferred revenue for leasehold improvements constructed by us as our assets that are reimbursed by tenants, and then amortize that deferred revenue as additional rental revenue over the related lease term. We recorded revenue for leasehold improvements of $1.9 million , $1.7 million , $1.8 million during 2015 , 2014 and 2013 , respectively. Amortization of deferred revenue is included in rental revenues in the accompanying Consolidated Statements of Operations. Estimated tenant recoveries for real estate taxes, common area maintenance and other recoverable operating expenses are recognized as revenue on a gross basis in the period that the recoverable expenses are incurred. Subsequent to year-end, we perform reconciliations on a lease-by-lease basis and bill or credit each tenant for any cumulative annual adjustments. The recognition of gains on sales of real estate requires that we measure the timing of a sale against various criteria related to the terms of the transaction, as well as any continuing involvement in the form of management or financial assistance associated with the property. If the sales criteria are not met, we defer gain recognition and account for the continued operations of the property by applying the finance, profit-sharing or leasing method. If the sales criteria have been met, we further analyze whether profit recognition is appropriate using the full accrual method. If the criteria to recognize profit using the full accrual method have not been met, we defer the gain and recognize it when the criteria are met or use the installment or cost recovery method as appropriate under the circumstances. We did not sell any properties during 2015 , 2014 and 2013 . Allowances for Tenant Receivables and Deferred Rent Receivables We carry tenant receivables and deferred rent receivables net of allowances. Tenant receivables consist primarily of amounts due for contractual lease payments and reimbursements of common area maintenance expenses, property taxes, and other costs recoverable from tenants. Deferred rent receivables represent the amount by which the cumulative straight-line rental revenue recorded to date exceeds cash rents billed to date under the lease agreement. We take into consideration many factors to evaluate the level of reserves necessary, including evaluations of individual tenant receivables, historical loss activity, current economic conditions and other relevant factors. As of December 31, 2015 and 2014 , we had an allowance for tenant receivables of $2.2 million and $2.0 million , respectively, and an allowance for deferred rent receivables of $6.0 million and $5.8 million , respectively. We generally do not require collateral or other security from our tenants other than letters of credit or cash security deposits. As of December 31, 2015 and 2014 , we had a total of $14.7 million of letters of credit held for security, as well as $38.7 million and $37.5 million of cash security deposits, respectively. The net impact on our results of operations from changes in our tenant receivable allowance, net of charges and recoveries, was a decrease of $223 thousand , and an increase of $ 461 thousand and $ 98 thousand d uring 2015 , 2014 and 2013 , respectively. The net impact on our results of operations from changes in our deferred rent receivable allowance, net of charges and recoveries was a decrease of $ 242 thousand , and an increase of $ 2.4 million and $ 3.9 million d uring 2015 , 2014 and 2013 , respectively. Insurance Recoveries Insurance recoveries related to property damage are recorded as other income when payment is either received or receipt is determined to be probable. Interest Income Interest income on our notes receivable is recognized over the life of the respective notes using the effective interest method and recognized on the accrual basis. Interest income is included in other income in the Consolidated Statements of Operations. See Notes 5 and 6 for details regarding our notes receivable. Loan Costs Loan costs incurred directly with the issuance of secured notes payable and revolving credit facilities are deferred and amortized to interest expense over the respective loan or credit facility term. Any unamortized amounts are written off upon early repayment of the secured notes payable, and the related cost and accumulated amortization are removed from our balance sheet. To the extent that a refinancing is considered an exchange of debt with the same lender, we account for loan costs based upon whether the old debt is determined to be modified or extinguished for accounting purposes. If the old debt is determined to be modified then we (i) continue to defer and amortize any unamortized deferred loan fees associated with the old debt at the time of the modification over the new term of the modified debt, (ii) defer and amortize the lender fees incurred in connection with the exchange over the new term of the modified debt, and (iii) expense all other costs associated with the exchange. If the old debt is determined to be extinguished then we (i) write off any unamortized amounts associated with the extinguished debt at the time of the extinguishment and remove the related cost and accumulated amortization from our balance sheet, (ii) expense all lender fees associated with the extinguishment, and (iii) defer and amortize all other costs incurred directly in connection with the extinguishment over the term of the new debt. In circumstances where we modify or exchange our revolving credit facility with the same lender, we account for the loan costs based upon whether the borrowing capacity (defined as the product of the remaining term and the maximum available credit) of the new arrangement is (a) greater than or equal to the borrowing capacity of the old arrangement, or (b) less than the borrowing capacity of the old arrangement. If the borrowing capacity of the new arrangement is greater than or equal to the borrowing capacity of the old arrangement, then we (i) continue to defer and amortize the deferred loan fees from the old arrangement over the term of the new arrangement and (ii) defer all lender and other fees directly incurred in connection with the new arrangement over the term of the new arrangement. If the borrowing capacity of the new arrangement is less than the borrowing capacity of the old arrangement, then we (i) amortize any unamortized deferred loan costs at the time of the change related to the old arrangement in proportion to the decrease in the borrowing capacity of the old arrangement and (ii) defer all lender and other fees incurred directly in connection with the new arrangement over the term of the new arrangement. Deferred loan costs are presented in the balance sheet as a direct deduction from the carrying amount of our secured notes payable and revolving credit facility. All loan costs expensed and deferred loan costs amortized are included in interest expense in our Consolidated Statements of Operations. See "Recently Adopted Accounting Pronouncements" at the end of this footnote regarding our early adoption of ASU No. 2015-3 and ASU No. 2015-15. See Note 7 for our deferred loan cost disclosures. Derivative Contracts We make use of interest rate swap and interest rate cap contracts to manage the risk associated with changes in interest rates on our floating-rate debt. When we enter into a floating-rate term loan, we generally enter into an interest rate swap agreement for the equivalent principal amount, for a period covering the majority of the loan term, which effectively converts our floating-rate debt to a fixed-rate basis during that time. In limited instances, we make use of interest rate caps to limit our exposure to interest rate increases on our floating-rate debt. We do not speculate in derivatives and we do not make use of any other derivative instruments. When we enter into derivative agreements, we generally elect to have them designated as cash flow hedges for accounting purposes. For hedging instruments designated as cash flow hedges, changes in fair value of the hedging instrument are recorded in accumulated other comprehensive income (loss) (AOCI), which is a component of equity outside of earnings, and any hedge ineffectiveness is recorded as interest expense. Amounts recorded in AOCI related to our designated hedges are reclassified to interest expense as interest payments are made on the hedged floating rate debt. Amounts reported in AOCI related to our Funds' hedges are reclassified to income, including depreciation, from unconsolidated real estate funds, as interest payments are made by our Funds on their hedged floating rate debt. For hedging instruments which are not designated as cash flow hedges, changes in fair value of the hedging instrument are recorded as interest expense. We record all derivatives on the balance sheet at fair value on a gross basis. See Note 9 for our derivative disclosures. Stock-Based Compensation We account for stock-based compensation, including stock options and LTIP Units, using the fair value method of accounting. The estimated fair value of the stock options and the long-term incentive units is amortized over their respective vesting periods. See Note 12 for our stock-based compensation disclosures. EPS We calculate basic EPS by dividing the net income attributable to common stockholders for the period by the weighted average number of common shares outstanding during the period. We calculate diluted EPS by dividing the net income attributable to common stockholders for the period by the weighted average number of common shares and dilutive instruments outstanding during the period using the treasury stock method. We account for unvested LTIP Units that contain nonforfeitable rights to dividends as participating securities and include these securities in the computation of basic and diluted EPS using the two-class method. See Note 11 for our EPS disclosures. Segment Information Segment information is prepared on the same basis that our management reviews information for operational decision-making purposes. We operate two business segments: the acquisition, development, ownership and management of office real estate, and the acquisition, development, ownership and management of multifamily real estate. The services for our office segment include primarily rental of office space and other tenant services, including parking and storage space rental. The services for our multifamily segment include primarily rental of apartments and other tenant services, including parking and storage space rental. See Note 14 for our segment disclosures. Income Taxes We have elected to be taxed as a REIT under the Code, commencing with our initial taxable year ending December 31, 2006. To qualify as a REIT, we are required (among other things) to distribute at least 90% of our REIT taxable income to our stockholders and meet the various other requirements imposed by the Code relating to matters such as operating results, asset holdings, distribution levels and diversity of stock ownership. Provided that we qualify for taxation as a REIT, we are generally not subject to corporate-level income tax on the earnings distributed currently to our stockholders that we derive from our REIT qualifying activities. If we fail to qualify as a REIT in any taxable year, and are unable to avail ourselves of certain savings provisions set forth in the Code, all of our taxable income would be subject to federal income tax at regular corporate rates, including any applicable alternative minimum tax. In addition, we are subject to taxation by various state and local jurisdictions, including those in which we transact business or reside. Our non-TRS, including our Operating Partnership, are either partnerships or disregarded entities for federal income tax purposes. Under applicable federal and state income tax rules, the allocated share of net income or loss from disregarded entities or flow-through entities (including certain limited partnerships and S-Corporations) is reportable in the income tax returns of the respective partners and stockholders. Accordingly, no income tax provision is included in the accompanying consolidated financial statements. We have elected to treat two of our subsidiaries as TRS which generally may engage in any business, including the provision of customary or non-customary services for our tenants. A TRS is treated as a regular corporation and is subject to federal income tax and applicable state income and franchise taxes at regular corporate rates. Our TRS did not have significant tax provisions or deferred income tax items for 2015 , 2014 or 2013 . New Accounting Pronouncements Changes to GAAP are established by the FASB in the form of ASUs. We consider the applicability and impact of all ASUs. Recently Issued and Adopted Accounting Pronouncements In April 2014, the FASB issued ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (Topics 205 and 360), which provides guidance for reporting discontinued operations. The amendments in this ASU change the requirements for reporting discontinued operations in Subtopic 205-20, Presentation of Financial Statements. The ASU was effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2014, which for us was the first quarter of 2015. We adopted the ASU in the first quarter of 2015 and it did not have a material impact on our financial position, results of operations or disclosures. In March 2015, the FASB issued ASU No. 2015-03, Interest—Imputation of Interest (Subtopic 835-30), which provides guidance on the presentation of debt issuance costs. To simplify the presentation of debt issuance costs, the amendments in this ASU require that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of the related debt, consistent with the manner in which debt discounts or premiums are presented. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, which for us would be the first quarter of 2016, and early adoption is permitted. We early adopted the ASU on a retrospective basis for the year ending December 31, 2015. We reclassified deferred loan costs with a carrying amount of $22.9 million and $15.6 million as of December 31, 2015 and December 31, 2014 , respectively, from Other assets to Secured notes payable and revolving credit facility, net in our Consolidated Balance Sheets. The adoption of the ASU did not impact the Consolidated Statement of Operations. See Note 7 for our deferred loan cost disclosures. In August 2015, the FASB issued ASU No. 2015-15, which provides additional guidance regarding the presentation of debt issuance costs associated with line-of-credit arrangements. The ASU permits the debt issuance costs associated with line-of-credit arrangements to be presented as an asset, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, which for us would be the first quarter of 2016, and early adoption is permitted. We early adopted the ASU for the year ending December 31, 2015. In accordance with ASU No. 2015-03 we reclassified deferred loan costs, which included deferred loan costs associated with our revolving credit facility, from Other assets to Secured notes payable and revolving credit facility, net in our Consolidated Balance Sheets. The adoption of the ASU did not impact the Consolidated Statement of Operations. See Note 7 for our deferred loan cost disclosures. Recently Issued Accounting Pronouncements In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) by one year. As a result, the ASU is now effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, which for us is the first quarter of 2018. Earlier application is permitted for fiscal years beginning after December 15, 2016, including interim reporting periods within those years, which for us is the first quarter of 2017. We do not expect this ASU to have a material impact on our financial position, results of operations or disclosures, as lease contracts are not within the scope of this ASU. In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which amends Business Combinations (Topic 805). The ASU requires that an acquirer (i) recognize adjustments to provisional amounts from Business Combinations that are identified during the measurement period in the reporting period in which the adjustment amounts are determined, (ii) record, in the same period’s financial statements, the effect on earnings, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date and (iii) disclose of the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, which for us would be the first quarter of 2016, and early adoption is permitted. The amendments in this ASU should be applied prospectively to adjustments to provisional amounts that occur after the effective date of this ASU with earlier application permitted for financial statements that have not been issued. We do not expect the ASU to have a material impact on our financial position, results of operations or disclosures. The FASB has not issued any other ASUs during 2015 or 2016 that we expect to be applicable and have a material impact on our future financial position, results of operations or disclosures.

Investment in Real Estate

Investment in Real Estate	12 Months Ended
	Dec. 31, 2015
Investment In Real Estate [Abstract]
Investment in Real Estate	Investment in Real Estate The tables below (in thousands) summarize our purchase price allocations for the acquisitions (these allocations are subject to adjustments within twelve months of the acquisition date). See Note 19 regarding the potential purchase of four Class A office properties in Westwood that we expect to close in the first quarter of 2016. 2015 Acquisitions During 2015 , we made two acquisitions: (i) on February 12, 2015 , we acquired the fee interest in the land (Harbor Court Land) under one of our office buildings for $27.5 million . We recognized $6.6 million of accretion of an above-market ground lease related to the purchase of the Harbor Court Land, which is included in other income in the Consolidated Statement of Operations, see Note 4 , and (ii) on March 5, 2015 , we purchased a 227,000 square foot Class A multi-tenant office property (First Financial Plaza), located in Encino, California, for $92.4 million , or approximately $407 per square foot. Harbor Court Land First Financial Plaza Land $ 12,060 $ 12,092 Buildings and improvements 15,440 75,039 Tenant improvements and lease intangibles — 6,065 Acquired above and below-market leases, net — (790 ) Net assets and liabilities acquired $ 27,500 $ 92,406 2014 Acquisitions During 2014 , we made two acquisitions: (i) on October 16, 2014 , we purchased a 216 thousand square foot Class A multi-tenant office property located adjacent to Beverly Hills (Carthay Campus) for $74.5 million , or approximately $345 per square foot, and (ii) on December 30, 2014 , we purchased a 468 unit multifamily property in Honolulu, Hawaii (Waena) for $146.0 million , or approximately $312 thousand per unit. Carthay Campus Waena Land $ 6,595 $ 26,864 Buildings and improvements 64,511 117,541 Tenant improvements and lease intangibles 5,943 1,732 Acquired above and below-market leases, net (2,580 ) (137 ) Net assets and liabilities acquired $ 74,469 $ 146,000 2013 Acquisitions During 2013 , we made two acquisitions: (i) on May 15, 2013 , we purchased a 225 thousand square foot Class A multi-tenant office property located in Beverly Hills (8484 Wilshire) for $89.0 million , or approximately $395 per square foot, and (ii)on August 15, 2013 , we purchased a 191 thousand square foot Class A multi-tenant office property located in Encino (16501 Ventura) for $61.0 million , or approximately $319 per square foot. 8484 Wilshire 16501 Ventura Land $ 8,847 $ 6,759 Buildings and improvements 77,158 55,179 Tenant improvements and lease intangibles 6,485 4,736 Acquired above and below-market leases, net (3,490 ) (5,674 ) Net assets and liabilities acquired $ 89,000 $ 61,000

Acquired Lease Intangibles

Acquired Lease Intangibles	12 Months Ended
	Dec. 31, 2015
Acquired Lease Intangibles [Abstract]
Acquired Lease Intangibles	Acquired Lease Intangibles The table below (in thousands) summarizes our above/below-market leases as of December 31 : December 31, 2015 December 31, 2014 Above-market tenant leases (1) $ 4,661 $ 3,040 Accumulated amortization - above-market tenant leases (1) (2,670 ) (2,082 ) Below-market ground leases 3,198 3,198 Accumulated amortization - below-market ground leases (705 ) (629 ) Acquired lease intangible assets, net $ 4,484 $ 3,527 Below-market tenant leases (1) $ 103,327 $ 138,088 Accumulated accretion - below-market tenant leases (1) (78,280 ) (102,335 ) Above-market ground leases (1) 4,017 16,200 Accumulated accretion - above-market ground leases (1) (459 ) (5,994 ) Acquired lease intangible liabilities, net $ 28,605 $ 45,959 _____________________________________________________________________________________ (1) During 2015 , we removed the cost and accumulated amortization/accretion of fully amortized/accreted leases from our balance sheet. See Note 2 "Investment in Real Estate". Impact on the Consolidated Statements of Operations The table below (in thousands) summarizes the net amortization/accretion related to our above/below-market leases: Year Ended December 31, 2015 2014 2013 Net accretion of above/below-market tenant leases (1) $ 12,467 $ 13,752 $ 15,511 Amortization of above-market ground leases (2) (17 ) (17 ) (17 ) Accretion of above-market ground lease (3) 50 50 50 Accretion of an above-market ground lease (4) 6,600 2,299 149 Total $ 19,100 $ 16,084 $ 15,693 _______________________________________________________________________________________ (1) Recorded as a net increase to office and multifamily rental revenues. (2) Ground leases from which we earn ground rent income. Recorded as a decrease to office parking and other income. (3) Ground lease from which we incur ground rent expense. Recorded as a decrease to office expense. (4) Ground lease from which we incurred ground rent expense. Recorded as an increase to other income. During 2015 , we acquired the fee interest in the land (Harbor Court Land). S ee Note 3 . The table below presents (in thousands) the estimated net accretion of above- and below-market tenant and ground leases at December 31, 2015 for the next five years: Year Net increase to revenues Decrease to expenses Net impact 2016 $ 7,869 $ 50 $ 7,919 2017 3,574 50 3,624 2018 3,094 50 3,144 2019 2,920 50 2,970 2020 1,411 50 1,461 Thereafter 1,695 3,307 5,002 Total $ 20,563 $ 3,557 $ 24,120

Investments In Unconsolidated R

Investments In Unconsolidated Real Estate Funds	12 Months Ended
	Dec. 31, 2015
Real Estate Investments, Net [Abstract]
Investments In Unconsolidated Real Estate Funds	Investments in Unconsolidated Real Estate Funds Description of our Funds We manage and own equity interest in two Funds, Fund X and Partnership X, through which we and investors own eight office properties totaling 1.8 million square feet in our core markets. At December 31, 2015 , we held equity interests of 68.61% of Fund X and 24.25% of Partnership X. We did not acquire any additional interests in our Funds in 2015 or 2014 . During 2013 , we acquired an additional 3.3% interest in Fund X and an additional 0.9% interest in Partnership X from an existing investor for an aggregate of approximately $8.0 million in cash. Our Funds pay us fees and reimburse us for certain expenses related to property management and other services we provide to the Funds. We also receive distributions based on invested capital and on any profits that exceed certain specified cash returns to the investors. The table below presents (in thousands) cash distributions received from our Funds: Year Ended December 31, 2015 2014 2013 Cash distributions received from our Funds $ 11,856 $ 12,423 $ 8,301 Notes receivable Our investment in the Funds includes two unsecured notes receivable. In April 2013 , we loaned $2.9 million to a related party investor in connection with a capital call made by Fund X. The loan carries interest at one month LIBOR plus 2.5% per annum, and is due and payable no later than April 1, 2017 , with mandatory prepayments equal to any distributions with respect to the related party's interest in Fund X. As of December 31, 2015 , and 2014 , the balance outstanding on the loan was $0.3 million and $1.5 million , respectively. In November 2015 , we loaned $0.5 million to Partnership X to fund working capital. The loan carries interest at one month LIBOR plus 2.5% per annum, and is due and payable no later than March 31, 2016 . As of December 31, 2015 , the balance outstanding on the loan was $0.5 million . The interest income recognized on our notes receivable is included in Other income in our Consolidated Statements of Operations. See Note 13 for our fair value disclosures. Summarized Financial Information for our Funds The accounting policies of the Funds are consistent with ours. The tables below present (in thousands) selected financial information for the Funds on a combined basis. The amounts presented represent 100% (not our pro-rata share) of amounts related to the Funds, and are based upon historical acquired book value: December 31, 2015 December 31, 2014 Total assets $ 691,543 $ 703,130 Total liabilities 389,372 389,413 Total equity 302,171 313,717 Year Ended December 31, 2015 2014 2013 Total revenues $ 69,702 $ 66,234 $ 63,976 Operating income 17,866 11,737 10,151 Net income 6,323 254 (829 )

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2015
Other Assets [Abstract]
Other Assets	Other Assets Other assets consisted of the following (in thousands) at December 31 : December 31, 2015 December 31, 2014 Note receivable (1) $ — $ 27,500 Restricted cash 194 194 Prepaid expenses 6,720 6,108 Other indefinite-lived intangible 1,988 1,988 Deposits in escrow (2) 75,000 2,500 Furniture, fixtures and equipment, net 1,448 1,425 Other 2,370 1,932 Total other assets $ 87,720 $ 41,647 ___________________________________________________ (1) On February 12, 2015 , the owner of a fee interest in the land related to one of our office buildings, to whom we previously loaned $27.5 million , repaid $1.0 million of the loan with cash, and then contributed the respective fee interest valued at $27.5 million to our Operating Partnership, subject to the remaining balance of that loan of $26.5 million , in exchange for 34,412 OP Units valued at $1.0 million . See Notes 3 and 10 . (2) At December 31, 2015 , deposits in escrow included a $75.0 million deposit in connection with the potential purchase of four Class A office properties in Westwood, expected to close in the first quarter of 2016. See Note 19 .

Secured Notes Payable and Revol

Secured Notes Payable and Revolving Credit Facility	12 Months Ended
	Dec. 31, 2015
Secured Debt [Abstract]
Secured Notes Payable and Revolving Credit Facility	Secured Notes Payable and Revolving Credit Facility, Net The following summarizes (in thousands) our secured notes payable and revolving credit facility at December 31 , 2015 and 2014 : Description (1) Maturity Date (2) Principal Balance as of December 31, 2015 Principal Balance as of December 31, 2014 Variable Interest Rate Fixed Interest Rate (3) Swap Maturity Date Fannie Mae Loan 3/1/2016 $ — $ 82,000 LIBOR + 0.62% N/A -- Term Loan (4) 3/1/2016 15,740 16,140 LIBOR + 1.60% 3.72% 4/1/2016 Term Loan 12/24/2016 20,000 20,000 LIBOR + 1.45% 3.57% 4/1/2016 Fannie Mae Loans 6/1/2017 — 18,000 LIBOR + 0.62% N/A -- Term Loan 10/2/2017 — 400,000 LIBOR + 2.00% 4.45% 7/1/2015 Term Loan 4/2/2018 256,140 510,000 LIBOR + 2.00% 4.12% 4/1/2016 Term Loan 8/1/2018 530,000 530,000 LIBOR + 1.70% 3.74% 8/1/2016 Term Loan (5) 8/5/2018 355,000 355,000 N/A 4.14% -- Term Loan (6) 2/1/2019 152,733 155,000 N/A 4.00% -- Term Loan (7) 6/5/2019 285,000 285,000 N/A 3.85% -- Fannie Mae Loan 10/1/2019 145,000 145,000 LIBOR + 1.25% 3.37% 4/1/2016 Term Loan (8) 3/1/2020 349,070 349,070 N/A 4.46% -- Fannie Mae Loans 11/2/2020 388,080 388,080 LIBOR + 1.65% 3.65% 11/1/2017 Term Loan 4/15/2022 340,000 — LIBOR + 1.40% 2.77% 4/1/2020 Term Loan 7/27/2022 180,000 — LIBOR + 1.45% 3.06% 7/1/2020 Term Loan 11/2/2022 400,000 — LIBOR + 1.35% 2.64% 11/1/2020 Fannie Mae Loan 4/1/2025 102,400 — LIBOR + 1.25% 2.84% 3/1/2020 Fannie Mae Loan 12/10/2025 115,000 — LIBOR + 1.25% 2.76% 12/1/2020 Aggregate loan principal $ 3,634,163 $ 3,253,290 Revolving credit facility (9) 8/21/2020 — 182,000 LIBOR + 1.40% N/A -- Total (10) $ 3,634,163 $ 3,435,290 Deferred loan costs, net (11) (22,887 ) (15,623 ) Total, net $ 3,611,276 $ 3,419,667 Aggregate effectively fixed rate loans $ 2,492,360 $ 1,828,080 3.35% Aggregate fixed rate loans 1,141,803 1,144,070 4.15% Aggregate variable rate loans — 463,140 N/A Total (10) $ 3,634,163 $ 3,435,290 __________________________________________________ (1) At December 31, 2015 , the weighted average remaining life, including extension options, of our term debt (excluding our revolving credit facility) was 4.5 years . For the $3.63 billion of term debt on which the interest rate was fixed under the terms of the loan or a swap, (i) the weighted average remaining life was 4.5 years , (ii) the weighted average remaining period during which interest was fixed was 2.6 years , (iii) the weighted average annual interest rate was 3.60% and (iv) including the non-cash amortization of deferred loan costs, the weighted average effective interest rate was 3.72% . Except as otherwise noted below, each loan (including our revolving credit facility) is secured by one or more separate collateral pools consisting of one or more properties, requiring monthly payments of interest only, with the outstanding principal due upon maturity. (2) Maturity dates include the effect of extension options. (3) Includes the effect of interest rate swaps and excludes the effect of prepaid loan fees. See Note 9 for details of our interest rate swaps. (4) Borrower is a consolidated entity in which our Operating Partnership owns a two-thirds interest. The loan maturity was extended to March 1, 2017 after year end. See Note 19 . (5) Interest-only until February 2016 , with principal amortization thereafter based upon a 30 -year amortization schedule. (6) Requires monthly payments of principal and interest. Principal amortization is based upon a 30 -year amortization schedule. (7) Interest only until February 2017 , with principal amortization thereafter based upon a 30 -year amortization schedule. (8) Interest is fixed until March 2018 . Interest-only until May 2016 , with principal amortization thereafter based upon a 30 -year amortization schedule. (9) $400.0 million revolving credit facility. Unused commitment fees range from 0.15% to 0.20% . (10) See Note 13 for our fair value disclosures. (11) Net of accumulated amortization of $15.2 million and $13.0 million at December 31, 2015 and 2014 , respectively. Deferred loan cost amortization was $7.0 million , $4.1 million and $4.2 million during 2015 , 2014 and 2013 , respectively. As of December 31, 2015 , the minimum future principal payments due on our secured notes payable and revolving credit facility, excluding any maturity extension options, were as follows (in thousands): Twelve months ending December 31: 2016 $ 46,939 2017 19,410 2018 1,478,014 2019 564,320 2020 683,080 Thereafter 842,400 Total future principal payments $ 3,634,163

Interest Payable, Accounts Paya

Interest Payable, Accounts Payable and Deferred Revenue	12 Months Ended
	Dec. 31, 2015
Accounts Payable and Accrued Liabilities [Abstract]
Interest Payable, Accounts Payable and Deferred Revenue	Interest Payable, Accounts Payable and Deferred Revenue Interest payable, accounts payable and deferred revenue consisted of the following (in thousands) as of December 31 : December 31, 2015 December 31, 2014 Interest payable $ 10,028 $ 9,656 Accounts payable and accrued liabilities 23,716 22,195 Deferred revenue 23,673 22,513 Total interest payable, accounts payable and deferred revenue $ 57,417 $ 54,364

Derivative Contracts

Derivative Contracts	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Contracts	Derivative Contracts Hedges of Interest Rate Risk We make use of interest rate swap and interest rate cap contracts to manage the risk associated with changes in interest rates on our floating-rate debt. When we enter into a floating-rate term loan, we generally enter into an interest rate swap agreement for the equivalent principal amount, for a period covering the majority of the loan term, which effectively converts our floating-rate debt to a fixed-rate basis during that time. In limited instances, we make use of interest rate caps to limit our exposure to interest rate increases on our floating-rate debt. We do not speculate in derivatives and we do not make use of any other derivative instruments. See note 7 for the details of our floating-rate debt that we have hedged. Summary of our derivatives As of December 31, 2015 , all of our interest rate swaps were designated as cash flow hedges: Number of Interest Rate Swaps Notional (in thousands) (1) Consolidated 15 $2,565,480 Unconsolidated Fund (2) 1 $325,000 ___________________________________________________ (1) See Note 13 for our derivative fair value disclosures. (2) The notional amount presented represents 100% , not our pro-rata share, of the amounts related to the Fund. At December 31, 2015 , we held an equity interest of 68.61% of that Fund. See Note 5 for more information regarding our Funds. Credit-risk-related Contingent Features We have agreements with each of our interest rate swap counterparties that contain a provision under which we could also be declared in default on our derivative obligations if we default on the underlying indebtedness that we are hedging. As of December 31, 2015 , there have been no events of default with respect to our interest rate swaps or our Fund's interest rate swap. The fair value of our interest rate swaps in a liability position were as follows (in thousands): December 31, 2015 December 31, 2014 Fair value of derivatives in a liability position (1) Consolidated $ 19,047 $ 40,953 __________________________________________________________________________________ (1) At December 31, 2015 , we had consolidated derivative assets of $4.2 million and our Fund's derivative was in an asset position of $737 thousand (100%, not our pro-rata share). Amounts include accrued interest and exclude any adjustment for nonperformance risk. See Note 17 with regards to our counterparty credit risk. Impact of Hedges on AOCI and Consolidated Statements of Operations The table below presents (in thousands) the effect of our derivative instruments and our Fund's derivative instrument on our AOCI and statements of operations: Year Ended December 31, 2015 2014 2013 Derivatives Designated as Cash Flow Hedges: (Loss) gain recorded in AOCI (effective portion) - our derivatives (1)(8) $ (11,549 ) $ (11,116 ) $ 903 (Loss) gain recorded in AOCI (effective portion) - our Fund's derivative (2)(8) $ (1,922 ) $ (1,767 ) $ 1,779 Loss reclassified from AOCI (effective portion) - our derivatives (3)(8) $ (37,390 ) $ (36,873 ) $ (36,246 ) Loss reclassified from AOCI (effective portion) - our Fund's derivative (4)(8) $ (931 ) $ (1,005 ) $ (549 ) Loss reclassified from AOCI (ineffective portion) - our derivatives (5)(7) $ — $ (50 ) $ (85 ) Gain recorded as interest expense (ineffective portion) (6) $ 66 $ — — Derivatives Not Designated as Cash Flow Hedges: Loss recorded as interest expense (7) $ — $ — $ (4 ) __________________________________________________ (1) Represents the change in fair value of our interest rate swaps designated as cash flow hedges, which does not impact the statement of operations. See Note 13 for our fair value disclosures. (2) Represents our share of the change in fair value of our Fund's interest rate swap designated as a cash flow hedge, which does not impact the statement of operations. (3) Reclassified from AOCI as an increase to interest expense. (4) Reclassified from AOCI as a decrease to income, including depreciation, from unconsolidated real estate funds. (5) Excluded from effectiveness testing. Reclassified from AOCI as an increase to interest expense. (6) Excluded from effectiveness testing. (7) Represents the change in fair value of our derivatives not designated as cash flow hedges. (8) See the reconciliation of our AOCI in Note 10 . Future Reclassifications from AOCI We estimate that $20.2 million of our AOCI related to our consolidated derivatives designated as cash flow hedges will be reclassified as an increase to interest expense during the next twelve months, and $193 thousand of our AOCI related to our unconsolidated Fund's derivative designated as a cash flow hedge will be reclassified as an increase to income, including depreciation, from unconsolidated real estate funds during the next twelve months.

Equity

Equity	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity Attributable to Parent [Abstract]
Equity	Equity Equity Transactions During 2015 , we (i) acquired 1.8 million OP Units in exchange for issuing to the holders of the OP Units an equal number of shares of our common stock and (ii) issued 274 thousand shares of our common stock for the exercise of options for net proceeds of $4.3 million at an average price of $15.58 per share. In addition, we issued 34 thousand OP Units valued at $1.0 million in connection with the acquisition of land under one of our office buildings (see Notes 3 and 6 ). During 2014 , we (i) acquired 2.2 million OP Units in exchange for issuing to the holders of the OP Units an equal number of shares of our common stock, (ii) acquired 120 thousand OP Units for cash for a total purchase price of $2.8 million at an average price of $23.56 per unit and (iii) cash-settled options covering 691 thousand shares of our common stock for a total cost of $4.5 million at an average price of $6.55 per option. We issued 40 thousand shares of our common stock for the exercise of options for net proceeds of $603 thousand , for an average price of $15.05 per share. During 2013 , we (i) acquired 1.4 million OP Units in exchange for issuing to the holders of the OP Units an equal number of shares of our common stock and (ii) acquired 13 thousand OP Units for cash for a total purchase price of $352 thousand at an average price of $26.68 per unit. We did not sell any shares of our common stock during 2013 . Noncontrolling Interests Our noncontrolling interests consist of (i) interests in our Operating Partnership that are not owned by us and (ii) a minority partner's one-third interest in a consolidated joint venture which owns an office building in Honolulu, Hawaii. Noncontrolling interests in our Operating Partnership consist of OP Units and fully-vested LTIP Units and represented approximately 15% of our Operating Partnership's total interests as of December 31, 2015 when we and our Operating Partnership had 146.9 million shares of common stock and 26.7 million OP Units and LTIP Units outstanding, respectively. A share of our common stock, an OP Unit and an LTIP Unit (once vested and booked up) have essentially the same economic characteristics, sharing equally in the distributions from our Operating Partnership. Investors who own OP Units have the right to cause our Operating Partnership to redeem their OP Units for an amount of cash per unit equal to the market value of one share of our common stock at the date of redemption, or, at our election, exchange their OP Units for shares of our common stock on a one-for-one b asis. LTIP Units have been granted to our key employees and non-employee directors as part of their compensation. These awards generally vest over the service period and once vested can generally be converted to OP Units. See Note 12 for details of our stock-based compensation. Changes in our Ownership Interest in our Operating Partnership The table below presents (in thousands) the effect on our equity from changes in our ownership interest in our Operating Partnership for the year ended December 31 : 2015 2014 2013 Net income attributable to common stockholders $ 58,384 $ 44,621 $ 45,311 Transfers from noncontrolling interests: Exchange of OP Units with noncontrolling interests 23,703 30,035 18,684 Repurchase of OP Units from noncontrolling interests — (1,197 ) (173 ) Net transfers from noncontrolling interests $ 23,703 $ 28,838 $ 18,511 Change from net income attributable to common stockholders and transfers from noncontrolling interests $ 82,087 $ 73,459 $ 63,822 AOCI Reconciliation The table below presents (in thousands) a reconciliation of our AOCI, which consists solely of adjustments related to derivatives designated as cash flow hedges for the year ended December 31 : 2015 2014 2013 Beginning balance $ (30,089 ) $ (50,554 ) $ (82,991 ) Other comprehensive (loss) income before reclassifications - our derivatives (11,549 ) (11,116 ) 903 Other comprehensive (loss) income before reclassifications - our Fund's derivative (1,922 ) (1,767 ) 1,779 Reclassifications from AOCI - our derivatives (1) 37,390 36,923 36,331 Reclassifications from AOCI - our Fund's derivative (2) 931 1,005 549 Net current period OCI 24,850 25,045 39,562 Less OCI attributable to noncontrolling interests (4,046 ) (4,580 ) (7,125 ) OCI attributable to common stockholders 20,804 20,465 32,437 Ending balance $ (9,285 ) $ (30,089 ) $ (50,554 ) __________________________________________________ (1) Reclassification as an increase to interest expense. (2) Reclassification as a decrease to income, including depreciation, from unconsolidated real estate funds. (3) See Note 9 for the details of our derivatives and Note 13 for our derivative fair value disclosures. Dividends (unaudited) Our common stock dividends paid during 2015 are classified for federal income tax purposes as follows: Record Date Paid Date Dividend Per Share Ordinary Income Capital Gain Return of Capital 12/30/2014 1/15/2015 $0.21 $0.0735 $— $0.1365 3/31/2015 4/15/2015 0.21 0.0735 — 0.1365 6/30/2015 7/15/2015 0.21 0.0735 — 0.1365 9/30/2015 10/15/2015 0.21 0.0735 — 0.1365 Total: $0.84 $0.2940 $— $0.5460

EPS

EPS	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
EPS	EPS The table below presents the calculation of basic and diluted EPS: Year Ended December 31, 2015 2014 2013 Numerator (in thousands): Net income attributable to common stockholders $ 58,384 $ 44,621 $ 45,311 Allocation to participating securities: Unvested LTIP Units (312 ) (175 ) (178 ) Numerator for basic and diluted net income attributable to common stockholders $ 58,072 $ 44,446 $ 45,133 Denominator (in thousands): Weighted average shares of common stock outstanding - basic 146,089 144,013 142,556 Effect of dilutive securities: Stock options (1) 4,515 4,108 3,288 Weighted average shares of common stock and common stock equivalents outstanding - diluted 150,604 148,121 145,844 Basic EPS: Net income attributable to common stockholders per share $ 0.398 $ 0.309 $ 0.317 Diluted EPS: Net income attributable to common stockholders per share $ 0.386 $ 0.300 $ 0.309 ____________________________________________________ (1) The following securities (in thousands) were excluded from the computation of the weighted average diluted shares because the effect of including them would be anti-dilutive to the calculation of diluted EPS: Year Ended December 31, 2015 2014 2013 OP Units 26,371 27,444 28,026 Vested LTIP Units 181 130 355 Unvested LTIP Units 622 526 577

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2015
Share-based Compensation [Abstract]
Share-Based Compensation	Stock-Based Compensation 2006 Omnibus Stock Incentive Plan The Douglas Emmett, Inc. 2006 Omnibus Stock Incentive Plan, as amended, our stock incentive plan, permits us to make grants of incentive stock options, non-qualified stock options, stock appreciation rights, deferred stock awards, restricted stock awards, dividend equivalent rights and other stock-based awards. We had an aggregate of 14.8 million shares available for grant as of December 31, 2015 . “Full value” awards (such as LTIP unit awards, deferred stock awards, restricted stock awards) are counted against our stock incentive plan overall limits as two shares, while options and Stock Appreciation Rights are counted as one share ( 0.9 shares for options or Stock Appreciation Rights with terms of five years or less). The number of shares reserved under our stock incentive plan is also subject to adjustment in the event of a stock split, stock dividend or other change in our capitalization. Shares that are forfeited or canceled from awards under our stock incentive plan also will generally be available for future awards. Our stock incentive plan is administered by the compensation committee of our board of directors. The compensation committee may interpret our stock incentive plan and make all determinations necessary or desirable for the administration of our plan. The committee has full power and authority to select the participants to whom awards will be granted, to make any combination of awards to participants, to accelerate the exercisability or vesting of any award and to determine the specific terms and conditions of each award, subject to the provisions of our stock incentive plan. All full-time and part-time officers, employees, directors and other key persons (including consultants and prospective employees) are eligible to participate in our stock incentive plan. Other stock-based awards under our stock incentive plan include awards that are valued in whole or in part by reference to shares of our common stock, including convertible preferred stock, convertible debentures and other convertible or exchangeable securities, partnership interests in a subsidiary or our Operating Partnership, awards valued by reference to book value, fair value or performance of a subsidiary and any class of profits interest or limited liability company membership interest. We have made certain awards in the form of a separate series of units of limited partnership interests in our Operating Partnership called LTIP Units, which can be granted either as free-standing awards or in tandem with other awards under our stock incentive plan. Our LTIP Units are valued by reference to the value of our common stock at the time of grant, and are subject to such conditions and restrictions as the compensation committee may determine, including continued employment or service, computation of financial metrics and/or achievement of pre-established performance goals and objectives. Once vested, LTIP Units can generally be converted to OP Units on a one for one basis. See Note 10 . Employee Awards We grant stock-based compensation in the form of LTIP Units as a part of our annual incentive compensation to our key employees each year, a portion which vests at the date of grant, and the remainder which vests in three equal annual installments over the three calendar years following the grant date. We accrue compensation expense during each year for the portion of the annual bonuses which we expect to pay out in the form of immediately vested equity grants (we award the grants before the end of the year for which they were awarded). Compensation expense for LTIP Units which are not vested at the grant date is recognized on a straight-line basis over the requisite service period for each separately vesting portion of the award. In addition to our annual incentive compensation, we also make long-term grants in the form of LTIP Units to our executives and certain key employees. The grants generally vest in equal annual installments over four to five calendar years following the grant date, and some of these grants include a portion which vests at the date of grant. Certain amounts of stock-based compensation expense are capitalized for employees who provide leasing and construction services. We granted 0.9 million , 1.1 million and 0.6 million LTIP Units to employees during 2015 , 2014 and 2013 , respectively. Non-Employee Director Awards We granted 33 thousand , 15 thousand and 19 thousand LTIP Units to our non-employee directors during 2015 , 2014 and 2013 , respectively, which vest ratably over the year of grant in lieu of cash retainers. Historically, we made long-term grants of LTIP Units to our non-employee directors which vested over the following three years , and during 2015 we made a proportional grant to a new director who joined our board of 1 thousand LTIP units, which vested during the remainder of 2015. Compensation Expense Total net stock-based compensation expense for equity grants was $15.2 million , $13.7 million and $10.0 million during 2015 , 2014 and 2013 , respectively. These amounts are net of capitalized stock-based compensation of $1.4 million , $1.1 million , and $0.8 million during 2015 , 2014 and 2013 , respectively. We calculate the fair value of the LTIP Units granted using the market value of our common stock on the date of grant with a discount for post-vesting restrictions. The total grant date fair value of all LTIP Units granted to employees and non-employee directors in 2015 , 2014 and 2013 was $18.7 million , $21.4 million and $10.1 million , respectively. The total grant date fair value of LTIP Units granted to employees and non-employee directors which vested in 2015 , 2014 and 2013 was $15.2 million , $14.8 million and $11.1 million , respectively. The total intrinsic value of options exercised and repurchased was $4.0 million and $5.0 million during 2015 and 2014 , respectively (our policy is to issue new shares of common stock for stock options exercised on a one-for-one basis). The total unrecognized stock-based compensation expense related to nonvested LTIP Unit awards granted to employees and non-employee directors was $17.3 million at December 31, 2015 . This expense will be recognized over a weighted-average term of twenty-four months . Stock-Based Award Activity The table below presents the activity of our outstanding stock options: Stock Options: Number of Stock Options (thousands) Weighted Average Exercise Price Weighted Average Remaining Contract Life (months) Total Intrinsic Value (thousands) Outstanding at December 31, 2012 12,540 $ 18.10 59 $ 65,177 Granted — Outstanding at December 31, 2013 12,540 18.10 47 $ 65,051 Granted — Exercised (731 ) 20.03 Outstanding at December 31, 2014 11,809 17.98 36 $ 123,017 Granted — Exercised (274 ) 15.58 Outstanding at December 31, 2015 11,535 18.04 23 $ 151,569 Exercisable at December 31, 2015 11,535 18.04 23 $ 151,569 The table below presents the activity of our unvested LTIP Units: Unvested LTIP Units: Number of Units (thousands) Weighted Average Grant Date Fair Value Outstanding at December 31, 2012 891 $ 15.12 Granted 663 15.26 Vested (785 ) 14.15 Forfeited (15 ) 21.52 Outstanding at December 31, 2013 754 15.63 Granted 1,106 19.31 Vested (854 ) 17.44 Forfeited (8 ) 22.48 Outstanding at December 31, 2014 998 18.48 Granted 922 20.26 Vested (816 ) 18.59 Forfeited (8 ) 24.86 Outstanding at December 31, 2015 1,096 19.85

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments Our estimates of the fair value of financial instruments were determined using available market information and widely used valuation methods. Considerable judgment is necessary to interpret market data and determine an estimated fair value. The use of different market assumptions or valuation methods may have a material effect on the estimated fair values. The FASB fair value framework hierarchy distinguishes between assumptions based on market data obtained from sources independent of the reporting entity, and the reporting entity’s own assumptions about market-based inputs. The hierarchy is as follows: Level 1 - inputs utilize unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 - inputs are observable either directly or indirectly for similar assets and liabilities in active markets. Level 3 - inputs are unobservable assumptions generated by the reporting entity As of December 31, 2015 , we did not have any fair value measurements of financial instruments using Level 3 inputs. Financial instruments disclosed at fair value Short term financial instruments: The carrying amounts for cash and cash equivalents, tenant receivables, revolving credit lines, interest payable, accounts payable, security deposits and dividends payable approximate fair value because of the short-term nature of these instruments. Notes receivable : See Note 5 for the details of our notes receivable. Based on observable market interest rates which we consider to be Level 2 inputs, the fair value of our notes receivable approximated their carrying value at December 31, 2015 . Secured notes payable : See Note 7 for the details of our secured notes payable. We estimate the fair value of our secured notes payable by calculating the credit-adjusted present value of the principal and interest payments for each secured note payable. The calculation incorporates observable market interest rates which we consider to be Level 2 inputs, assumes that the loans will be outstanding through maturity, and excludes any maturity extension options. The table below presents (in thousands) the estimated fair value of our secured notes payable: Secured Notes Payable: December 31, 2015 December 31, 2014 Fair value $ 3,691,075 $ 3,293,351 Carrying value $ 3,634,163 $ 3,253,290 Financial instruments measured at fair value Derivative instruments: See Note 9 for the details of our derivatives. We present our derivatives on the balance sheet at fair value, on a gross basis, excluding accrued interest. We estimate the fair value of our derivative instruments by calculating the credit-adjusted present value of the expected future cash flows of each derivative. The calculation incorporates the contractual terms of the derivatives, observable market interest rates which we consider to be Level 2 inputs, and credit risk adjustments to reflect the counterparty's as well as our own nonperformance risk. Our derivatives are not subject to master netting arrangements. The table below presents (in thousands) the estimated fair value of our derivatives: December 31, 2015 December 31, 2014 Derivative Assets: Fair value - our derivatives (1) $ 4,830 $ — Fair value - our Fund's derivative (2) $ 837 $ 2,282 Derivative Liabilities: Fair value - our derivatives (1) $ 16,310 $ 37,386 ___________________________________________________________________________________ (1) The fair value of our derivatives are included in interest rate contracts in our consolidated balance sheet. (2) The fair value presented represents 100.00% , not our pro-rata share, of the fair value related to our Fund's derivative. At December 31, 2015 , we held an equity interest of 68.61% of that Fund. Our pro-rata share of the fair value of the Fund's derivative is included in our investment in unconsolidated real estate funds in our consolidated balance sheet. See Note 5 for more information regarding our Funds.

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting Segment information is prepared on the same basis that our management reviews information for operational decision-making purposes. We operate in two business segments: (i) the acquisition, development, ownership and management of office real estate and (ii) the acquisition, development, ownership and management of multifamily real estate. The services for our office segment primarily include rental of office space and other tenant services, including parking and storage space rental. The services for our multifamily segment include rental of apartments and other tenant services, including parking and storage space rental. Asset information by segment is not reported because we do not use this measure to assess performance or make decisions to allocate resources. Therefore, depreciation and amortization expense is not allocated among segments. General and administrative expenses and interest expense are not included in segment profit as our internal reporting addresses these items on a corporate level. Segment profit is not a measure of operating income or cash flows from operating activities as measured by GAAP, it is not indicative of cash available to fund cash needs, and it should not be considered as an alternative to cash flows as a measure of liquidity. Not all companies may calculate segment profit in the same manner. We consider segment profit to be an appropriate supplemental measure to net income because it can assist both investors and management in understanding the core operations of our properties. The table below presents (in thousands) the operating activity of our reportable segments: Year Ended December 31, 2015 2014 2013 Office Segment Total office revenues $ 540,975 $ 519,405 $ 514,583 Office expenses (186,556 ) (181,160 ) (174,935 ) Office Segment profit 354,419 338,245 339,648 Multifamily Segment Total multifamily revenues 94,799 80,117 76,936 Multifamily expenses (23,862 ) (20,664 ) (19,928 ) Multifamily Segment profit 70,937 59,453 57,008 Total profit from all segments $ 425,356 $ 397,698 $ 396,656 The table below (in thousands) is a reconciliation of the total profit from all segments to net income attributable to common stockholders: Year Ended December 31, 2015 2014 2013 Total profit from all segments $ 425,356 $ 397,698 $ 396,656 General and administrative expenses (30,496 ) (27,332 ) (26,614 ) Depreciation and amortization (205,333 ) (202,512 ) (191,351 ) Other income 15,228 17,675 6,402 Other expenses (6,470 ) (7,095 ) (4,199 ) Income, including depreciation, from unconsolidated real estate funds 7,694 3,713 3,098 Interest expense (135,453 ) (128,507 ) (130,548 ) Acquisition-related expenses (1,771 ) (786 ) (607 ) Net income 68,755 52,854 52,837 Less: Net income attributable to noncontrolling interests (10,371 ) (8,233 ) (7,526 ) Net income attributable to common stockholders $ 58,384 $ 44,621 $ 45,311

Future Minimum Lease Receipts

Future Minimum Lease Receipts	12 Months Ended
	Dec. 31, 2015
Operating Leases, Future Minimum Payments Receivable [Abstract]
Future Minimum Lease Receipts	Future Minimum Lease Receipts We lease space to tenants primarily under non-cancelable operating leases that generally contain provisions for a base rent plus reimbursement for certain operating expenses, and we own fee interests in two parcels of land subject to ground leases from which we earn ground rent income. The table below presents (in thousands) the future minimum base rentals on our non-cancelable office tenant and ground operating leases at December 31, 2015 : Minimum base rentals (1) during: 2016 $ 396,812 2017 358,267 2018 295,593 2019 242,862 2020 190,154 Thereafter 540,485 Total future minimum base rentals $ 2,024,173 _____________________________________________________ (1) Does not include (i) residential leases, which typically have a term of one year or less, (ii) tenant reimbursements, (iii) straight line rent, (iv) amortization/accretion of acquired above/below-market lease intangibles and (v) percentage rents. The amounts assume that those tenants with early termination options do not exercise them.

Future Minimum Lease Payments

Future Minimum Lease Payments	12 Months Ended
	Dec. 31, 2015
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Future Minimum Lease Payments	Future Minimum Lease Payments We incurred lease payments related to two ground leases of $0.7 million , $2.6 million and $2.2 million during 2015 , 2014 and 2013 , respectively. We acquired the fee interest related to one of those ground leases in February 2015 (see Notes 3 and 6 ). The table below presents (in thousands) the future minimum ground lease payments as of December 31, 2015 under our remaining ground lease: Minimum ground lease payments during: 2016 $ 733 2017 733 2018 733 2019 733 2020 733 Thereafter 48,377 Total future minimum lease payments (1) $ 52,042 ___________________________________________________ (1) Lease term ends on December 31, 2086. Ground rent is fixed at $733 thousand per year until February 28, 2019, and will then be reset to the greater of the existing ground rent or market. The table above assumes that the rental payments will continue to be $733 thousand per year after February 28, 2019.

Commitments, Contingencies and

Commitments, Contingencies and Guarantees	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Guarantees	Commitments, Contingencies and Guarantees Legal Proceedings From time to time, we are party to various lawsuits, claims and other legal proceedings that arise in the ordinary course of our business. Excluding ordinary, routine litigation incidental to our business, we are not currently a party to any legal proceedings that we believe would reasonably be expected to have a materially adverse effect on our business, financial condition or results of operations. Concentration of Risk We are subject to credit risk with respect to our tenant receivables and deferred rent receivables related to our tenant leases. Our tenants' ability to honor the terms of their respective leases remains dependent upon the economic, regulatory and social factors. We seek to minimize our credit risk from our tenant leases by (i) targeting smaller, more affluent tenants, from a diverse mix of industries, (ii) performing credit evaluations of prospective tenants and (iii) obtaining security deposits from our tenants. In 2015 , 2014 and 2013 , no tenant accounted for more than 10% of our total revenues. See Note 2 for the details of our allowances for tenant receivables and deferred rent receivables. All of our properties (including the properties owned by our Funds) are located in Los Angeles County, California and Honolulu, Hawaii, and we are dependent on the Southern California and Honolulu economies. Therefore, we are susceptible to adverse local conditions and regulations, as well as natural disasters in those areas. We are also subject to credit risk from the counterparties on our interest rate swap and interest rate cap contracts that we use to manage the risk associated with our floating rate debt. See Note 9 for the details of our interest rate contracts. We seek to minimize our credit risk by entering into agreements with a variety of high quality counterparties with investment grade ratings. We maintain our cash and cash equivalents at high quality financial institutions with investment grade ratings. Interest bearing accounts at each U.S. banking institution are insured by the FDIC up to $250 thousand . Asset Retirement Obligations Conditional asset retirement obligations represent a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement is conditional upon a future event that may or may not be within our control. A liability for a conditional asset retirement obligation must be recorded if the fair value of the obligation can be reasonably estimated. Environmental site assessments and investigations have identified twenty-three properties in our consolidated portfolio, and four properties owned by our Funds, which contain asbestos, and would have to be removed in compliance with applicable environmental regulations if these properties undergo major renovations or are demolished. As of December 31, 2015 , the obligations to remove the asbestos from these properties have indeterminable settlement dates, and we are unable to reasonably estimate the fair value of the associated conditional asset retirement obligation. Guarantees We made certain environmental and other limited indemnities and guarantees covering customary non-recourse carve-outs for a $325.0 million loan of one of our Funds. The loan matures on May 1, 2018 , and carries interest that is effectively fixed through an interest rate swap which matures on May 1, 2017 . We have also guaranteed the related swap. The Fund has agreed to indemnify us for any amounts that we would be required to pay under these agreements. As of December 31, 2015 , all obligations under the loan and swap agreements have been performed by the Fund in accordance with the terms of those agreements and the maximum future payments remaining under the swap agreement were $2.6 million . Acquisitions We did not have any commitments for acquisitions, except for the agreement that we entered into to purchase four Class A office properties in Westwood in 2016 . See Note 19 .

Quarterly Financial Information

Quarterly Financial Information (unaudited)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information [Abstract]
Quarterly Financial Information (unaudited)	Quarterly Financial Information (unaudited) The tables below present (in thousands, except per share amounts) selected quarterly information for 2015 and 2014 : Three Months Ended March 31, June 30, 2015 September 30, 2015 December 31, 2015 Total revenue $ 154,809 $ 160,457 $ 160,077 $ 160,431 Net income before noncontrolling interests 22,096 15,894 14,159 16,606 Net income attributable to common stockholders 18,699 13,448 12,070 14,167 Net income per common share - basic $ 0.128 $ 0.092 $ 0.082 $ 0.096 Net income per common share - diluted $ 0.124 $ 0.089 $ 0.080 $ 0.093 Weighted average shares of common stock outstanding - basic 145,327 145,898 146,331 146,780 Weighted average shares of common stock and common stock equivalents outstanding - diluted 149,802 150,304 150,740 151,531 Three Months Ended March 31, 2014 June 30, 2014 September 30, 2014 December 31, 2014 Total revenue $ 148,872 $ 151,422 $ 148,141 $ 151,087 Net income before noncontrolling interests 15,458 15,917 8,681 12,798 Net income attributable to common stockholders 12,976 13,363 7,389 10,893 Net income per common share - basic $ 0.090 $ 0.093 $ 0.051 $ 0.075 Net income per common share - diluted $ 0.088 $ 0.090 $ 0.050 $ 0.073 Weighted average shares of common stock outstanding - basic 143,140 143,717 144,361 144,823 Weighted average shares of common stock and common stock equivalents outstanding - diluted 146,861 147,945 148,641 148,943

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent events On December 21, 2015 , we entered into a contract under which a joint venture which we will manage is expected to pay $1.34 billion , or approximately $779 per square foot, for a portfolio of four Class A office properties totaling 1.7 million square feet in our Westwood submarket. Subject to typical closing conditions, we expect the acquisition to close in the first quarter of 2016 . On January 21, 2016 a consolidated joint venture in which we own a two thirds interest extended the maturity of a $15.7 million loan to March 1, 2017 . The loan is interest only and secured by a single office property.

Schedule III - Consolidated Rea

Schedule III - Consolidated Real Estate and Accumulated Depreciation and Amortization	12 Months Ended
	Dec. 31, 2015
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Schedule III	Initial Cost Cost Capitalized Subsequent to Acquisition Gross Carrying Amount Property Name Encumbrances Land Building & Improvements Improvements Land Building & Improvements Total Accumulated Depreciation & Amortization Year Built / Renovated Year Acquired Office Properties 100 Wilshire $ 139,199 $ 12,769 $ 78,447 $ 139,015 $ 27,108 $ 203,123 $ 230,231 $ (55,453 ) 1968/2002 1999 11777 San Vicente 25,931 5,032 15,768 29,652 6,714 43,738 50,452 (11,672 ) 1974/1998 1999 12400 Wilshire 61,436 5,013 34,283 76,037 8,828 106,505 115,333 (29,203 ) 1985 1996 16501 Ventura 39,803 6,759 53,112 8,357 6,759 61,469 68,228 (5,826 ) 1986/2012 2013 1901 Avenue of the Stars 152,733 18,514 131,752 111,569 26,163 235,672 261,835 (65,741 ) 1968/2001 2001 401 Wilshire 79,787 9,989 29,187 115,820 21,787 133,209 154,996 (37,307 ) 1981/2000 1996 8484 Wilshire (1) — 8,846 77,780 14,982 8,846 92,763 101,609 (7,683 ) 1972/2013 2013 9601 Wilshire 145,845 16,597 54,774 110,173 17,658 163,886 181,544 (46,309 ) 1962/2004 2001 Beverly Hills Medical Center 31,469 4,955 27,766 28,176 6,435 54,462 60,897 (15,469 ) 1964/2004 2004 Bishop Place 73,813 8,317 105,651 60,435 8,833 165,570 174,403 (48,947 ) 1992 2004 Bishop Square 180,000 16,273 213,793 25,303 16,273 239,096 255,369 (47,217 ) 1972/1983 2010 Brentwood Court 6,318 2,564 8,872 722 2,563 9,595 12,158 (2,714 ) 1984 2006 Brentwood Executive Plaza 25,461 3,255 9,654 33,518 5,921 40,506 46,427 (11,863 ) 1983/1996 1995 Brentwood Medical Plaza 25,805 5,934 27,836 2,296 5,933 30,133 36,066 (8,958 ) 1975 2006 Brentwood San Vicente Medical 13,297 5,557 16,457 1,142 5,557 17,599 23,156 (4,918 ) 1957/1985 2006 Brentwood/Saltair 13,065 4,468 11,615 12,195 4,775 23,503 28,278 (6,916 ) 1986 2000 Bundy/Olympic 24,056 4,201 11,860 30,036 6,030 40,067 46,097 (11,127 ) 1991/1998 1994 Camden Medical Arts 38,021 3,102 12,221 27,931 5,298 37,956 43,254 (10,446 ) 1972/1992 1995 Carthay Campus 48,007 6,595 70,454 2,252 6,594 72,707 79,301 (3,455 ) 1965/2008 2014 Century Park Plaza 77,984 10,275 70,761 107,147 16,153 172,030 188,183 (47,291 ) 1972/1987 1999 Century Park West (1) — 3,717 29,099 528 3,667 29,677 33,344 (8,436 ) 1971 2007 Columbus Center 10,559 2,096 10,396 9,648 2,333 19,807 22,140 (5,702 ) 1987 2001 Coral Plaza 25,831 4,028 15,019 19,069 5,366 32,750 38,116 (9,516 ) 1981 1998 Cornerstone Plaza (1) — 8,245 80,633 5,380 8,263 85,995 94,258 (21,316 ) 1986 2007 Encino Gateway 51,463 8,475 48,525 53,166 15,653 94,513 110,166 (28,212 ) 1974/1998 2000 Encino Plaza 30,011 5,293 23,125 47,307 6,165 69,560 75,725 (20,173 ) 1971/1992 2000 Encino Terrace 91,133 12,535 59,554 94,210 15,533 150,766 166,299 (44,433 ) 1986 1999 Executive Tower (1) — 6,660 32,045 60,942 9,471 90,176 99,647 (26,110 ) 1989 1995 First Financial Plaza 54,085 12,092 81,104 877 12,092 81,981 94,073 (2,304 ) 1986 2015 Gateway Los Angeles 28,429 2,376 15,302 48,669 5,119 61,228 66,347 (17,204 ) 1987 1994 Harbor Court 30,992 51 41,001 49,029 12,060 78,021 90,081 (19,859 ) 1994 2004 Honolulu Club 15,740 1,863 16,766 6,631 1,863 23,397 25,260 (6,406 ) 1980 2008 Landmark II 118,684 6,086 109,259 82,081 13,070 184,356 197,426 (62,616 ) 1989 1997 Lincoln/Wilshire 38,021 3,833 12,484 23,382 7,475 32,224 39,699 (8,623 ) 1996 2000 MB Plaza 25,769 4,533 22,024 30,973 7,503 50,027 57,530 (15,846 ) 1971/1996 1998 Olympic Center 25,656 5,473 22,850 32,645 8,247 52,721 60,968 (15,584 ) 1985/1996 1997 One Westwood (1) — 10,350 29,784 59,698 9,194 90,638 99,832 (24,762 ) 1987/2004 1999 Palisades Promenade 35,904 5,253 15,547 53,637 9,664 64,773 74,437 (17,498 ) 1990 1995 Initial Cost Cost Capitalized Subsequent to Acquisition Gross Carrying Amount Property Name Encumbrances Land Building & Improvements Improvements Land Building & Improvements Total Accumulated Depreciation & Amortization Year Built / Renovated Year Acquired Office Properties (continued) Saltair/San Vicente 21,269 5,075 6,946 16,995 7,557 21,459 29,016 (6,289 ) 1964/1992 1997 San Vicente Plaza 9,430 7,055 12,035 481 7,055 12,516 19,571 (4,050 ) 1985 2006 Santa Monica Square (1) — 5,366 18,025 20,271 6,863 36,799 43,662 (10,856 ) 1983/2004 2001 Second Street Plaza 35,802 4,377 15,277 35,589 7,421 47,822 55,243 (13,800 ) 1991 1997 Sherman Oaks Galleria 264,297 33,213 17,820 409,918 48,328 412,623 460,951 (123,734 ) 1981/2002 1997 Studio Plaza 115,591 9,347 73,358 131,054 15,015 198,744 213,759 (61,295 ) 1988/2004 1995 The Trillium (1) — 20,688 143,263 83,941 21,989 225,903 247,892 (65,067 ) 1988 2005 Tower at Sherman Oaks 20,000 4,712 15,747 37,861 8,685 49,635 58,320 (15,377 ) 1967/1991 1997 Valley Executive Tower 78,943 8,446 67,672 100,195 11,737 164,576 176,313 (47,454 ) 1984 1998 Valley Office Plaza 41,271 5,731 24,329 47,504 8,957 68,607 77,564 (21,048 ) 1966/2002 1998 Verona 14,262 2,574 7,111 14,672 5,111 19,246 24,357 (5,482 ) 1991 1997 Village on Canon 58,337 5,933 11,389 49,122 13,303 53,141 66,444 (14,486 ) 1989/1995 1994 Warner Center Towers 285,000 43,110 292,147 400,021 59,418 675,860 735,278 (192,550 ) 1982-1993/2004 2002 Westside Towers 107,386 8,506 79,532 81,586 14,568 155,056 169,624 (42,921 ) 1985 1998 Westwood Place 47,788 8,542 44,419 51,742 11,448 93,255 104,703 (25,998 ) 1987 1999 Multifamily Properties 555 Barrington 43,440 6,461 27,639 40,513 14,903 59,710 74,613 (16,178 ) 1989 1999 Barrington Plaza 153,630 28,568 81,485 152,861 58,208 204,706 262,914 (54,394 ) 1963/1998 1998 Barrington/Kiowa 11,345 5,720 10,052 513 5,720 10,565 16,285 (2,885 ) 1974 2006 Barry 9,000 6,426 8,179 493 6,426 8,672 15,098 (2,492 ) 1973 2006 Kiowa 4,535 2,605 3,263 260 2,605 3,523 6,128 (1,009 ) 1972 2006 Moanalua Hillside Apartments 145,000 19,426 85,895 38,827 30,071 114,077 144,148 (30,710 ) 1968/2004 2005 Pacific Plaza 46,400 10,091 16,159 74,058 27,816 72,492 100,308 (19,035 ) 1963/1998 1999 The Shores 144,610 20,809 74,191 198,035 60,555 232,480 293,035 (60,515 ) 1965-67/2002 1999 Villas at Royal Kunia 90,120 42,887 71,376 14,473 35,164 93,572 128,736 (28,714 ) 1990/1995 2006 Waena 102,400 26,864 119,273 317 26,864 119,590 146,454 (3,921 ) 1970/2009-2014 2014 Ground Lease Owensmouth/Warner (1) — 23,848 — — 23,848 — 23,848 — N/A 2006 Total Operating Properties $ 3,634,163 $ 628,354 $ 3,053,142 $ 3,615,933 $ 906,601 $ 6,390,828 $ 7,297,429 $ (1,703,375 ) Property Under Development Landmark II Development — 13,070 — 2,154 13,070 2,154 15,224 — 2013/2015 N/A Moanalua Hillside Apartments Development — 5,294 — 6,382 5,294 6,382 11,676 — 2013/2015 N/A Total Property Under Development $ — $ 18,364 $ — $ 8,536 $ 18,364 $ 8,536 $ 26,900 $ — Grand Total $ 3,634,163 $ 646,718 $ 3,053,142 $ 3,624,469 $ 924,965 $ 6,399,364 $ 7,324,329 $ (1,703,375 ) __________________________________________________ (1) Encumbered by our revolving credit facility, which had a zero balance at December 31, 2015 . The aggregate cost of consolidated real estate in the table above for federal income tax purposes was $4.41 billion at December 31, 2015 . The table below presents (in thousands) a reconciliation of our investment in real estate: Year Ended December 31, 2015 2014 2013 Real Estate Assets Balance, beginning of period $ 7,157,603 $ 7,012,733 $ 6,786,537 Additions: Property acquisitions 120,696 223,186 159,164 Improvements 75,367 84,578 66,483 Developments 3,778 4,280 549 Deductions: Write-offs (33,115 ) (167,174 ) — Balance, end of period $ 7,324,329 $ 7,157,603 $ 7,012,733 Accumulated Depreciation and Amortization Balance, beginning of period $ (1,531,157 ) $ (1,495,819 ) $ (1,304,468 ) Additions: Depreciation and amortization (205,333 ) (202,512 ) (191,351 ) Deductions: Write-offs 33,115 167,174 — Balance, end of period $ (1,703,375 ) $ (1,531,157 ) $ (1,495,819 )

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates.
Investment in Real Estate	Investment in Real Estate We account for acquisitions of properties as business combinations, utilizing the purchase method, and include the results of operations of the acquired properties in our results of operations from their respective dates of acquisition. We expense transaction costs related to acquisitions when they are incurred. When we acquire a property, we determine the fair values of the tangible assets on an ‘‘as-if-vacant’’ basis. We use estimates of future cash flows, comparable sales, other relevant information obtained in connection with the acquisition of the property, and other valuation techniques to allocate the purchase price of each acquired property between land, buildings and improvements, tenant improvements and leasing costs, and identifiable intangible assets and liabilities such as amounts related to in-place at-market leases, acquired above- and below-market tenant leases (including for lease renewal options), and acquired above- and below-market ground leases (including for lease renewal options). The estimated fair value of acquired in-place at-market tenant leases represents the estimated costs that we would have incurred to lease the property to the occupancy level of the property at the date of acquisition, including the fair value of leasing commissions and legal costs. Additionally, we evaluate the time period over which we expect such occupancy level to be achieved and include an estimate of the net operating costs (primarily real estate taxes, insurance and utilities) incurred during the lease-up period. We record above-market and below-market in-place lease intangibles as an asset or liability based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between the contractual amounts to be received or paid pursuant to the in-place tenant or ground leases, respectively, and our estimate of fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining non-cancelable term of the lease. Our initial valuations and allocations are subject to change until the allocation is finalized within 12 months after the acquisition date. See Note 3 for our property acquisition disclosures. Buildings and site improvements are depreciated on a straight-line basis using an estimated life of forty years for buildings and fifteen years for site improvements. We carry buildings and site improvements, offset by the related accumulated depreciation and any impairment charges, on our balance sheet until they are sold. Tenant improvements are depreciated on a straight-line basis over the life of the related lease, with any remaining balance depreciated in the period of any early termination of that lease. During 2015 and 2014 , we removed the cost and accumulated depreciation of $16.0 million and $84.6 million , respectively, of fully depreciated tenant improvements determined to be no longer in use from our balance sheet. Acquired in-place leases are amortized on a straight line basis over the weighted average remaining term of the acquired in-place leases. We carry acquired in-place leases, offset by the related accumulated amortization, on our balance sheet until the related building is either sold or impaired. Leasing intangibles are amortized on a straight-line basis over the related lease term, with any remaining balance amortized in the period of any early termination of that lease. During 2015 and 2014 , we removed the cost and accumulated amortization of $17.1 million and $82.6 million , respectively, of fully amortized leasing intangibles from our balance sheet. Acquired above- and below-market tenant leases are amortized/accreted on a straight line basis over the life of the related lease and recorded as either an increase (for below-market leases) or a decrease (for above-market leases) to rental revenue. During 2015 and 2014 , we removed the cost and accumulated amortization/accretion of $0.2 million and $ 32.2 million , respectively, of fully amortized above-market tenant leases and $37.4 million and $ 137.3 million , respectively, of fully accreted below-market tenant leases from our balance sheet. Acquired above- and below-market ground leases, from which we earn ground rent income, are amortized/accreted on a straight line basis over the life of the lease and recorded either as an increase (for below-market leases) or a decrease (for above-market leases) to rental revenue. Acquired above- and below-market ground leases, for which we incur ground rent expense, are accreted/ amortized over the life of the lease and recorded either as an increase (for below-market leases) or a decrease (for above-market leases) to expense. During 2015 , we removed the cost and accumulated accretion of $12.2 million for a fully accreted above-market ground lease from our balance sheet. When assets are sold or retired, their cost and related accumulated depreciation or amortization are removed from our balance sheet with the resulting gains or losses, if any, reflected in our results of operations for the respective period. We did not dispose of any properties during 2015 , 2014 or 2013 . Repairs and maintenance are recorded as expense when incurred. Costs incurred during the period of construction of real estate are capitalized. Cost capitalization of development and redevelopment activities begins during the predevelopment period, which we define as the activities that are necessary to begin the development of the property. We cease capitalization upon substantial completion of the project, but no later than one year from cessation of major construction activity. We also cease capitalization when activities necessary to prepare the property for its intended use have been suspended. Capitalized costs are included in Property under development in our Consolidated Balance Sheets. Once major construction activity has ceased and the development or redevelopment property is in the lease-up phase, the capitalized costs are transferred to (i) Land, (ii) Building and improvements and (iii) Tenant improvements and lease intangibles on our Consolidated Balance Sheets as the historical cost of the property. During 2015 and 2014 , we capitalized $3.8 million and $4.3 million of costs related to our multifamily developments, respectively, which included $940 thousand and $294 thousand of capitalized interest, respectively.
Investment in Unconsolidated Real Estate Funds	Investment in Unconsolidated Real Estate Funds At December 31, 2015 , we managed and held equity interests in two Funds: Fund X and Partnership X. We held a 68.61% interest in Fund X, and an aggregate 24.25% interest in the properties held by Partnership X and its subsidiaries. We account for our investments in the Funds using the equity method because we have significant influence but not control over the entities and our Funds do not qualify as variable interest entities. Our investment balance represents our share of the net assets of the combined Funds, additional basis (primarily due to the inclusion of the cost of raising capital that is accounted for as part of our investment basis) of $2.9 million as of December 31, 2015 and 2014 , and notes receivable with a total outstanding balance of $0.8 million and $1.5 million as of December 31, 2015 and 2014 , respectively. See Note 5 for our Fund disclosures.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets We periodically assess whether there has been an impairment in the value of our long-lived assets whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. An impairment charge is recorded when events or change in circumstances indicate that a decline in the fair value below the carrying value has occurred and such decline is other-than-temporary. Recoverability of assets to be held and used is measured by a comparison of the carrying value to the undiscounted future cash flows expected to be generated by the asset. If the carrying value exceeds the estimated undiscounted future cash flows, an impairment loss is recorded equal to the difference between the asset’s carrying value and its fair value based on the estimated discounted future cash flows. Based upon such periodic assessments, no impairments occurred during 2015 , 2014 or 2013 . We periodically assess whether there has been an impairment in the value of our investments in our Funds whenever events or changes in circumstances indicate that the carrying value of our investments in our Funds may not be recoverable. An impairment charge is recorded when events or changes in circumstances indicate that a decline in the fair value below the carrying value has occurred and such decline is other-than-temporary. The ultimate realization of the investments in our Funds is dependent upon a number of factors, including the performance of the investment and market conditions. Based upon such periodic assessments, no impairments occurred during 2015 , 2014 or 2013 . Assets to be disposed of are reported at the lower of their carrying value or fair value, less costs to sell. An asset is classified as an asset held for sale when it meets certain requirements, including the approval of the sale of the asset, the marketing of the asset for sale, and our expectation that the sale will likely occur within the next 12 months. Upon classification of an asset as held for disposition, the carrying value of the asset, excluding long-term debt, is presented on the balance sheet as properties held for disposition, we cease to depreciate the asset, and the operating results of the asset may be presented as discontinued operations for all periods presented. As of December 31, 2015 , we did not have any assets classified as held for sale.
Cash and Cash Equivalents	Cash and Cash Equivalents We consider short-term investments with maturities of three months or less when purchased to be cash equivalents.
Revenue and Gain Recognition	Revenue and Gain Recognition We recognize revenue when four basic criteria are met: (i) persuasive evidence of an arrangement exists, (ii) services are rendered, (iii) the fee is fixed and determinable and (iv) collectibility is reasonably assured. All of our tenant leases are classified as operating leases. For all lease terms exceeding one year, rental income is recognized on a straight-line basis over the term of the lease. Deferred rent receivables represent rental revenue recognized on a straight-line basis in excess of billed rents. Rental revenue from month-to-month leases or leases with no scheduled rent increases or other adjustments are recognized on a monthly basis when earned. Lease termination fees, which are included in rental revenues in the accompanying Consolidated Statements of Operations, are recognized when the related lease is canceled and we have no continuing obligation to provide services to the former tenant. We recorded lease termination revenue of $2.2 million , $2.6 million , $0.7 million during 2015 , 2014 and 2013 , respectively. We record tenant improvements and deferred revenue for leasehold improvements constructed by us as our assets that are reimbursed by tenants, and then amortize that deferred revenue as additional rental revenue over the related lease term. We recorded revenue for leasehold improvements of $1.9 million , $1.7 million , $1.8 million during 2015 , 2014 and 2013 , respectively. Amortization of deferred revenue is included in rental revenues in the accompanying Consolidated Statements of Operations. Estimated tenant recoveries for real estate taxes, common area maintenance and other recoverable operating expenses are recognized as revenue on a gross basis in the period that the recoverable expenses are incurred. Subsequent to year-end, we perform reconciliations on a lease-by-lease basis and bill or credit each tenant for any cumulative annual adjustments. The recognition of gains on sales of real estate requires that we measure the timing of a sale against various criteria related to the terms of the transaction, as well as any continuing involvement in the form of management or financial assistance associated with the property. If the sales criteria are not met, we defer gain recognition and account for the continued operations of the property by applying the finance, profit-sharing or leasing method. If the sales criteria have been met, we further analyze whether profit recognition is appropriate using the full accrual method. If the criteria to recognize profit using the full accrual method have not been met, we defer the gain and recognize it when the criteria are met or use the installment or cost recovery method as appropriate under the circumstances. We did not sell any properties during 2015 , 2014 and 2013 .
Allowances for Tenant Receivables and Deferred Rent Receivables	Allowances for Tenant Receivables and Deferred Rent Receivables We carry tenant receivables and deferred rent receivables net of allowances. Tenant receivables consist primarily of amounts due for contractual lease payments and reimbursements of common area maintenance expenses, property taxes, and other costs recoverable from tenants. Deferred rent receivables represent the amount by which the cumulative straight-line rental revenue recorded to date exceeds cash rents billed to date under the lease agreement. We take into consideration many factors to evaluate the level of reserves necessary, including evaluations of individual tenant receivables, historical loss activity, current economic conditions and other relevant factors.
Insurance Recoveries	Insurance Recoveries Insurance recoveries related to property damage are recorded as other income when payment is either received or receipt is determined to be probable.
Interest Income	Interest Income Interest income on our notes receivable is recognized over the life of the respective notes using the effective interest method and recognized on the accrual basis. Interest income is included in other income in the Consolidated Statements of Operations. See Notes 5 and 6 for details regarding our notes receivable.
Loan Costs	Loan Costs Loan costs incurred directly with the issuance of secured notes payable and revolving credit facilities are deferred and amortized to interest expense over the respective loan or credit facility term. Any unamortized amounts are written off upon early repayment of the secured notes payable, and the related cost and accumulated amortization are removed from our balance sheet. To the extent that a refinancing is considered an exchange of debt with the same lender, we account for loan costs based upon whether the old debt is determined to be modified or extinguished for accounting purposes. If the old debt is determined to be modified then we (i) continue to defer and amortize any unamortized deferred loan fees associated with the old debt at the time of the modification over the new term of the modified debt, (ii) defer and amortize the lender fees incurred in connection with the exchange over the new term of the modified debt, and (iii) expense all other costs associated with the exchange. If the old debt is determined to be extinguished then we (i) write off any unamortized amounts associated with the extinguished debt at the time of the extinguishment and remove the related cost and accumulated amortization from our balance sheet, (ii) expense all lender fees associated with the extinguishment, and (iii) defer and amortize all other costs incurred directly in connection with the extinguishment over the term of the new debt. In circumstances where we modify or exchange our revolving credit facility with the same lender, we account for the loan costs based upon whether the borrowing capacity (defined as the product of the remaining term and the maximum available credit) of the new arrangement is (a) greater than or equal to the borrowing capacity of the old arrangement, or (b) less than the borrowing capacity of the old arrangement. If the borrowing capacity of the new arrangement is greater than or equal to the borrowing capacity of the old arrangement, then we (i) continue to defer and amortize the deferred loan fees from the old arrangement over the term of the new arrangement and (ii) defer all lender and other fees directly incurred in connection with the new arrangement over the term of the new arrangement. If the borrowing capacity of the new arrangement is less than the borrowing capacity of the old arrangement, then we (i) amortize any unamortized deferred loan costs at the time of the change related to the old arrangement in proportion to the decrease in the borrowing capacity of the old arrangement and (ii) defer all lender and other fees incurred directly in connection with the new arrangement over the term of the new arrangement. Deferred loan costs are presented in the balance sheet as a direct deduction from the carrying amount of our secured notes payable and revolving credit facility. All loan costs expensed and deferred loan costs amortized are included in interest expense in our Consolidated Statements of Operations. See "Recently Adopted Accounting Pronouncements" at the end of this footnote regarding our early adoption of ASU No. 2015-3 and ASU No. 2015-15. See Note 7 for our deferred loan cost disclosures.
Derivative Contracts	Derivative Contracts We make use of interest rate swap and interest rate cap contracts to manage the risk associated with changes in interest rates on our floating-rate debt. When we enter into a floating-rate term loan, we generally enter into an interest rate swap agreement for the equivalent principal amount, for a period covering the majority of the loan term, which effectively converts our floating-rate debt to a fixed-rate basis during that time. In limited instances, we make use of interest rate caps to limit our exposure to interest rate increases on our floating-rate debt. We do not speculate in derivatives and we do not make use of any other derivative instruments. When we enter into derivative agreements, we generally elect to have them designated as cash flow hedges for accounting purposes. For hedging instruments designated as cash flow hedges, changes in fair value of the hedging instrument are recorded in accumulated other comprehensive income (loss) (AOCI), which is a component of equity outside of earnings, and any hedge ineffectiveness is recorded as interest expense. Amounts recorded in AOCI related to our designated hedges are reclassified to interest expense as interest payments are made on the hedged floating rate debt. Amounts reported in AOCI related to our Funds' hedges are reclassified to income, including depreciation, from unconsolidated real estate funds, as interest payments are made by our Funds on their hedged floating rate debt. For hedging instruments which are not designated as cash flow hedges, changes in fair value of the hedging instrument are recorded as interest expense. We record all derivatives on the balance sheet at fair value on a gross basis. See Note 9 for our derivative disclosures.
Stock-Based Compensation	Stock-Based Compensation We account for stock-based compensation, including stock options and LTIP Units, using the fair value method of accounting. The estimated fair value of the stock options and the long-term incentive units is amortized over their respective vesting periods. See Note 12 for our stock-based compensation disclosures.
EPS	EPS We calculate basic EPS by dividing the net income attributable to common stockholders for the period by the weighted average number of common shares outstanding during the period. We calculate diluted EPS by dividing the net income attributable to common stockholders for the period by the weighted average number of common shares and dilutive instruments outstanding during the period using the treasury stock method. We account for unvested LTIP Units that contain nonforfeitable rights to dividends as participating securities and include these securities in the computation of basic and diluted EPS using the two-class method. See Note 11 for our EPS disclosures.
Segment Information	Segment Information Segment information is prepared on the same basis that our management reviews information for operational decision-making purposes. We operate two business segments: the acquisition, development, ownership and management of office real estate, and the acquisition, development, ownership and management of multifamily real estate. The services for our office segment include primarily rental of office space and other tenant services, including parking and storage space rental. The services for our multifamily segment include primarily rental of apartments and other tenant services, including parking and storage space rental. See Note 14 for our segment disclosures.
Income Taxes	Income Taxes We have elected to be taxed as a REIT under the Code, commencing with our initial taxable year ending December 31, 2006. To qualify as a REIT, we are required (among other things) to distribute at least 90% of our REIT taxable income to our stockholders and meet the various other requirements imposed by the Code relating to matters such as operating results, asset holdings, distribution levels and diversity of stock ownership. Provided that we qualify for taxation as a REIT, we are generally not subject to corporate-level income tax on the earnings distributed currently to our stockholders that we derive from our REIT qualifying activities. If we fail to qualify as a REIT in any taxable year, and are unable to avail ourselves of certain savings provisions set forth in the Code, all of our taxable income would be subject to federal income tax at regular corporate rates, including any applicable alternative minimum tax. In addition, we are subject to taxation by various state and local jurisdictions, including those in which we transact business or reside. Our non-TRS, including our Operating Partnership, are either partnerships or disregarded entities for federal income tax purposes. Under applicable federal and state income tax rules, the allocated share of net income or loss from disregarded entities or flow-through entities (including certain limited partnerships and S-Corporations) is reportable in the income tax returns of the respective partners and stockholders. Accordingly, no income tax provision is included in the accompanying consolidated financial statements. We have elected to treat two of our subsidiaries as TRS which generally may engage in any business, including the provision of customary or non-customary services for our tenants. A TRS is treated as a regular corporation and is subject to federal income tax and applicable state income and franchise taxes at regular corporate rates. Our TRS did not have significant tax provisions or deferred income tax items for 2015 , 2014 or 2013 .
New Accounting Pronouncements	New Accounting Pronouncements Changes to GAAP are established by the FASB in the form of ASUs. We consider the applicability and impact of all ASUs. Recently Issued and Adopted Accounting Pronouncements In April 2014, the FASB issued ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (Topics 205 and 360), which provides guidance for reporting discontinued operations. The amendments in this ASU change the requirements for reporting discontinued operations in Subtopic 205-20, Presentation of Financial Statements. The ASU was effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2014, which for us was the first quarter of 2015. We adopted the ASU in the first quarter of 2015 and it did not have a material impact on our financial position, results of operations or disclosures. In March 2015, the FASB issued ASU No. 2015-03, Interest—Imputation of Interest (Subtopic 835-30), which provides guidance on the presentation of debt issuance costs. To simplify the presentation of debt issuance costs, the amendments in this ASU require that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of the related debt, consistent with the manner in which debt discounts or premiums are presented. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, which for us would be the first quarter of 2016, and early adoption is permitted. We early adopted the ASU on a retrospective basis for the year ending December 31, 2015. We reclassified deferred loan costs with a carrying amount of $22.9 million and $15.6 million as of December 31, 2015 and December 31, 2014 , respectively, from Other assets to Secured notes payable and revolving credit facility, net in our Consolidated Balance Sheets. The adoption of the ASU did not impact the Consolidated Statement of Operations. See Note 7 for our deferred loan cost disclosures. In August 2015, the FASB issued ASU No. 2015-15, which provides additional guidance regarding the presentation of debt issuance costs associated with line-of-credit arrangements. The ASU permits the debt issuance costs associated with line-of-credit arrangements to be presented as an asset, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, which for us would be the first quarter of 2016, and early adoption is permitted. We early adopted the ASU for the year ending December 31, 2015. In accordance with ASU No. 2015-03 we reclassified deferred loan costs, which included deferred loan costs associated with our revolving credit facility, from Other assets to Secured notes payable and revolving credit facility, net in our Consolidated Balance Sheets. The adoption of the ASU did not impact the Consolidated Statement of Operations. See Note 7 for our deferred loan cost disclosures. Recently Issued Accounting Pronouncements In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) by one year. As a result, the ASU is now effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, which for us is the first quarter of 2018. Earlier application is permitted for fiscal years beginning after December 15, 2016, including interim reporting periods within those years, which for us is the first quarter of 2017. We do not expect this ASU to have a material impact on our financial position, results of operations or disclosures, as lease contracts are not within the scope of this ASU. In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which amends Business Combinations (Topic 805). The ASU requires that an acquirer (i) recognize adjustments to provisional amounts from Business Combinations that are identified during the measurement period in the reporting period in which the adjustment amounts are determined, (ii) record, in the same period’s financial statements, the effect on earnings, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date and (iii) disclose of the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, which for us would be the first quarter of 2016, and early adoption is permitted. The amendments in this ASU should be applied prospectively to adjustments to provisional amounts that occur after the effective date of this ASU with earlier application permitted for financial statements that have not been issued. We do not expect the ASU to have a material impact on our financial position, results of operations or disclosures. The FASB has not issued any other ASUs during 2015 or 2016 that we expect to be applicable and have a material impact on our future financial position, results of operations or disclosures.

Investment in Real Estate (Tabl

Investment in Real Estate (Tables)	12 Months Ended
	Dec. 31, 2015
Investment In Real Estate [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	Carthay Campus Waena Land $ 6,595 $ 26,864 Buildings and improvements 64,511 117,541 Tenant improvements and lease intangibles 5,943 1,732 Acquired above and below-market leases, net (2,580 ) (137 ) Net assets and liabilities acquired $ 74,469 $ 146,000 8484 Wilshire 16501 Ventura Land $ 8,847 $ 6,759 Buildings and improvements 77,158 55,179 Tenant improvements and lease intangibles 6,485 4,736 Acquired above and below-market leases, net (3,490 ) (5,674 ) Net assets and liabilities acquired $ 89,000 $ 61,000 Harbor Court Land First Financial Plaza Land $ 12,060 $ 12,092 Buildings and improvements 15,440 75,039 Tenant improvements and lease intangibles — 6,065 Acquired above and below-market leases, net — (790 ) Net assets and liabilities acquired $ 27,500 $ 92,406

Acquired Lease Intangibles (Tab

Acquired Lease Intangibles (Tables)	12 Months Ended
	Dec. 31, 2015
Acquired Lease Intangibles [Abstract]
Summary Of Acquired Lease Intangibles	The table below (in thousands) summarizes our above/below-market leases as of December 31 : December 31, 2015 December 31, 2014 Above-market tenant leases (1) $ 4,661 $ 3,040 Accumulated amortization - above-market tenant leases (1) (2,670 ) (2,082 ) Below-market ground leases 3,198 3,198 Accumulated amortization - below-market ground leases (705 ) (629 ) Acquired lease intangible assets, net $ 4,484 $ 3,527 Below-market tenant leases (1) $ 103,327 $ 138,088 Accumulated accretion - below-market tenant leases (1) (78,280 ) (102,335 ) Above-market ground leases (1) 4,017 16,200 Accumulated accretion - above-market ground leases (1) (459 ) (5,994 ) Acquired lease intangible liabilities, net $ 28,605 $ 45,959 _____________________________________________________________________________________ (1) During 2015 , we removed the cost and accumulated amortization/accretion of fully amortized/accreted leases from our balance sheet. See Note 2 "Investment in Real Estate".
Schedule Of Net Amortization Or Accretion Of Above/Below-Market Leases	The table below (in thousands) summarizes the net amortization/accretion related to our above/below-market leases: Year Ended December 31, 2015 2014 2013 Net accretion of above/below-market tenant leases (1) $ 12,467 $ 13,752 $ 15,511 Amortization of above-market ground leases (2) (17 ) (17 ) (17 ) Accretion of above-market ground lease (3) 50 50 50 Accretion of an above-market ground lease (4) 6,600 2,299 149 Total $ 19,100 $ 16,084 $ 15,693 _______________________________________________________________________________________ (1) Recorded as a net increase to office and multifamily rental revenues. (2) Ground leases from which we earn ground rent income. Recorded as a decrease to office parking and other income. (3) Ground lease from which we incur ground rent expense. Recorded as a decrease to office expense. (4) Ground lease from which we incurred ground rent expense. Recorded as an increase to other income. During 2015 , we acquired the fee interest in the land (Harbor Court Land). S ee Note 3 .
Schedule Of Estimated Net Accretion	The table below presents (in thousands) the estimated net accretion of above- and below-market tenant and ground leases at December 31, 2015 for the next five years: Year Net increase to revenues Decrease to expenses Net impact 2016 $ 7,869 $ 50 $ 7,919 2017 3,574 50 3,624 2018 3,094 50 3,144 2019 2,920 50 2,970 2020 1,411 50 1,461 Thereafter 1,695 3,307 5,002 Total $ 20,563 $ 3,557 $ 24,120

Investments In Unconsolidated32

Investments In Unconsolidated Real Estate Funds (Tables)	12 Months Ended
	Dec. 31, 2015
Real Estate Investments, Net [Abstract]
Equity investees summarized financial information	The table below presents (in thousands) cash distributions received from our Funds: Year Ended December 31, 2015 2014 2013 Cash distributions received from our Funds $ 11,856 $ 12,423 $ 8,301 Summarized Financial Information for our Funds The accounting policies of the Funds are consistent with ours. The tables below present (in thousands) selected financial information for the Funds on a combined basis. The amounts presented represent 100% (not our pro-rata share) of amounts related to the Funds, and are based upon historical acquired book value: December 31, 2015 December 31, 2014 Total assets $ 691,543 $ 703,130 Total liabilities 389,372 389,413 Total equity 302,171 313,717 Year Ended December 31, 2015 2014 2013 Total revenues $ 69,702 $ 66,234 $ 63,976 Operating income 17,866 11,737 10,151 Net income 6,323 254 (829 )

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Other Assets [Abstract]
Schedule Of Other Assets	Other assets consisted of the following (in thousands) at December 31 : December 31, 2015 December 31, 2014 Note receivable (1) $ — $ 27,500 Restricted cash 194 194 Prepaid expenses 6,720 6,108 Other indefinite-lived intangible 1,988 1,988 Deposits in escrow (2) 75,000 2,500 Furniture, fixtures and equipment, net 1,448 1,425 Other 2,370 1,932 Total other assets $ 87,720 $ 41,647 ___________________________________________________ (1) On February 12, 2015 , the owner of a fee interest in the land related to one of our office buildings, to whom we previously loaned $27.5 million , repaid $1.0 million of the loan with cash, and then contributed the respective fee interest valued at $27.5 million to our Operating Partnership, subject to the remaining balance of that loan of $26.5 million , in exchange for 34,412 OP Units valued at $1.0 million . See Notes 3 and 10 . (2) At December 31, 2015 , deposits in escrow included a $75.0 million deposit in connection with the potential purchase of four Class A office properties in Westwood, expected to close in the first quarter of 2016. See Note 19 .

Secured Notes Payable and Rev34

Secured Notes Payable and Revolving Credit Facility (Tables)	12 Months Ended
	Dec. 31, 2015
Secured Debt [Abstract]
Schedule Of Secured Notes Payable	The following summarizes (in thousands) our secured notes payable and revolving credit facility at December 31 , 2015 and 2014 : Description (1) Maturity Date (2) Principal Balance as of December 31, 2015 Principal Balance as of December 31, 2014 Variable Interest Rate Fixed Interest Rate (3) Swap Maturity Date Fannie Mae Loan 3/1/2016 $ — $ 82,000 LIBOR + 0.62% N/A -- Term Loan (4) 3/1/2016 15,740 16,140 LIBOR + 1.60% 3.72% 4/1/2016 Term Loan 12/24/2016 20,000 20,000 LIBOR + 1.45% 3.57% 4/1/2016 Fannie Mae Loans 6/1/2017 — 18,000 LIBOR + 0.62% N/A -- Term Loan 10/2/2017 — 400,000 LIBOR + 2.00% 4.45% 7/1/2015 Term Loan 4/2/2018 256,140 510,000 LIBOR + 2.00% 4.12% 4/1/2016 Term Loan 8/1/2018 530,000 530,000 LIBOR + 1.70% 3.74% 8/1/2016 Term Loan (5) 8/5/2018 355,000 355,000 N/A 4.14% -- Term Loan (6) 2/1/2019 152,733 155,000 N/A 4.00% -- Term Loan (7) 6/5/2019 285,000 285,000 N/A 3.85% -- Fannie Mae Loan 10/1/2019 145,000 145,000 LIBOR + 1.25% 3.37% 4/1/2016 Term Loan (8) 3/1/2020 349,070 349,070 N/A 4.46% -- Fannie Mae Loans 11/2/2020 388,080 388,080 LIBOR + 1.65% 3.65% 11/1/2017 Term Loan 4/15/2022 340,000 — LIBOR + 1.40% 2.77% 4/1/2020 Term Loan 7/27/2022 180,000 — LIBOR + 1.45% 3.06% 7/1/2020 Term Loan 11/2/2022 400,000 — LIBOR + 1.35% 2.64% 11/1/2020 Fannie Mae Loan 4/1/2025 102,400 — LIBOR + 1.25% 2.84% 3/1/2020 Fannie Mae Loan 12/10/2025 115,000 — LIBOR + 1.25% 2.76% 12/1/2020 Aggregate loan principal $ 3,634,163 $ 3,253,290 Revolving credit facility (9) 8/21/2020 — 182,000 LIBOR + 1.40% N/A -- Total (10) $ 3,634,163 $ 3,435,290 Deferred loan costs, net (11) (22,887 ) (15,623 ) Total, net $ 3,611,276 $ 3,419,667 Aggregate effectively fixed rate loans $ 2,492,360 $ 1,828,080 3.35% Aggregate fixed rate loans 1,141,803 1,144,070 4.15% Aggregate variable rate loans — 463,140 N/A Total (10) $ 3,634,163 $ 3,435,290 __________________________________________________ (1) At December 31, 2015 , the weighted average remaining life, including extension options, of our term debt (excluding our revolving credit facility) was 4.5 years . For the $3.63 billion of term debt on which the interest rate was fixed under the terms of the loan or a swap, (i) the weighted average remaining life was 4.5 years , (ii) the weighted average remaining period during which interest was fixed was 2.6 years , (iii) the weighted average annual interest rate was 3.60% and (iv) including the non-cash amortization of deferred loan costs, the weighted average effective interest rate was 3.72% . Except as otherwise noted below, each loan (including our revolving credit facility) is secured by one or more separate collateral pools consisting of one or more properties, requiring monthly payments of interest only, with the outstanding principal due upon maturity. (2) Maturity dates include the effect of extension options. (3) Includes the effect of interest rate swaps and excludes the effect of prepaid loan fees. See Note 9 for details of our interest rate swaps. (4) Borrower is a consolidated entity in which our Operating Partnership owns a two-thirds interest. The loan maturity was extended to March 1, 2017 after year end. See Note 19 . (5) Interest-only until February 2016 , with principal amortization thereafter based upon a 30 -year amortization schedule. (6) Requires monthly payments of principal and interest. Principal amortization is based upon a 30 -year amortization schedule. (7) Interest only until February 2017 , with principal amortization thereafter based upon a 30 -year amortization schedule. (8) Interest is fixed until March 2018 . Interest-only until May 2016 , with principal amortization thereafter based upon a 30 -year amortization schedule. (9) $400.0 million revolving credit facility. Unused commitment fees range from 0.15% to 0.20% . (10) See Note 13 for our fair value disclosures. (11) Net of accumulated amortization of $15.2 million and $13.0 million at December 31, 2015 and 2014 , respectively. Deferred loan cost amortization was $7.0 million , $4.1 million and $4.2 million during 2015 , 2014 and 2013 , respectively.
Schedule Of Minimum Future Principal Payments Due On Secured Notes Payable	As of December 31, 2015 , the minimum future principal payments due on our secured notes payable and revolving credit facility, excluding any maturity extension options, were as follows (in thousands): Twelve months ending December 31: 2016 $ 46,939 2017 19,410 2018 1,478,014 2019 564,320 2020 683,080 Thereafter 842,400 Total future principal payments $ 3,634,163

Interest Payable, Accounts Pa35

Interest Payable, Accounts Payable and Deferred Revenue (Tables)	12 Months Ended
	Dec. 31, 2015
Accounts Payable and Accrued Liabilities [Abstract]
Schedule Of Accounts Payable And Accrued Expenses	Interest payable, accounts payable and deferred revenue consisted of the following (in thousands) as of December 31 : December 31, 2015 December 31, 2014 Interest payable $ 10,028 $ 9,656 Accounts payable and accrued liabilities 23,716 22,195 Deferred revenue 23,673 22,513 Total interest payable, accounts payable and deferred revenue $ 57,417 $ 54,364

Derivative Contracts (Tables)

Derivative Contracts (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Derivatives	As of December 31, 2015 , all of our interest rate swaps were designated as cash flow hedges: Number of Interest Rate Swaps Notional (in thousands) (1) Consolidated 15 $2,565,480 Unconsolidated Fund (2) 1 $325,000 ___________________________________________________ (1) See Note 13 for our derivative fair value disclosures. (2) The notional amount presented represents 100% , not our pro-rata share, of the amounts related to the Fund. At December 31, 2015 , we held an equity interest of 68.61% of that Fund. See Note 5 for more information regarding our Funds.
Schedule of Fair Values in a Asset or Liability Position	The fair value of our interest rate swaps in a liability position were as follows (in thousands): December 31, 2015 December 31, 2014 Fair value of derivatives in a liability position (1) Consolidated $ 19,047 $ 40,953 __________________________________________________________________________________ (1) At December 31, 2015 , we had consolidated derivative assets of $4.2 million and our Fund's derivative was in an asset position of $737 thousand (100%, not our pro-rata share). Amounts include accrued interest and exclude any adjustment for nonperformance risk. See Note 17 with regards to our counterparty credit risk.
Effect of Derivative Instruments on OCI and Statements of Operations	The table below presents (in thousands) the effect of our derivative instruments and our Fund's derivative instrument on our AOCI and statements of operations: Year Ended December 31, 2015 2014 2013 Derivatives Designated as Cash Flow Hedges: (Loss) gain recorded in AOCI (effective portion) - our derivatives (1)(8) $ (11,549 ) $ (11,116 ) $ 903 (Loss) gain recorded in AOCI (effective portion) - our Fund's derivative (2)(8) $ (1,922 ) $ (1,767 ) $ 1,779 Loss reclassified from AOCI (effective portion) - our derivatives (3)(8) $ (37,390 ) $ (36,873 ) $ (36,246 ) Loss reclassified from AOCI (effective portion) - our Fund's derivative (4)(8) $ (931 ) $ (1,005 ) $ (549 ) Loss reclassified from AOCI (ineffective portion) - our derivatives (5)(7) $ — $ (50 ) $ (85 ) Gain recorded as interest expense (ineffective portion) (6) $ 66 $ — — Derivatives Not Designated as Cash Flow Hedges: Loss recorded as interest expense (7) $ — $ — $ (4 ) __________________________________________________ (1) Represents the change in fair value of our interest rate swaps designated as cash flow hedges, which does not impact the statement of operations. See Note 13 for our fair value disclosures. (2) Represents our share of the change in fair value of our Fund's interest rate swap designated as a cash flow hedge, which does not impact the statement of operations. (3) Reclassified from AOCI as an increase to interest expense. (4) Reclassified from AOCI as a decrease to income, including depreciation, from unconsolidated real estate funds. (5) Excluded from effectiveness testing. Reclassified from AOCI as an increase to interest expense. (6) Excluded from effectiveness testing. (7) Represents the change in fair value of our derivatives not designated as cash flow hedges. (8) See the reconciliation of our AOCI in Note 10 .

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity Attributable to Parent [Abstract]
Net Income Attributable To Common Stockholders And Transfers (To) From Noncontrolling Interests	The table below presents (in thousands) the effect on our equity from changes in our ownership interest in our Operating Partnership for the year ended December 31 : 2015 2014 2013 Net income attributable to common stockholders $ 58,384 $ 44,621 $ 45,311 Transfers from noncontrolling interests: Exchange of OP Units with noncontrolling interests 23,703 30,035 18,684 Repurchase of OP Units from noncontrolling interests — (1,197 ) (173 ) Net transfers from noncontrolling interests $ 23,703 $ 28,838 $ 18,511 Change from net income attributable to common stockholders and transfers from noncontrolling interests $ 82,087 $ 73,459 $ 63,822
Schedule of Accumulated Other Comprehensive Income (Loss)	The table below presents (in thousands) a reconciliation of our AOCI, which consists solely of adjustments related to derivatives designated as cash flow hedges for the year ended December 31 : 2015 2014 2013 Beginning balance $ (30,089 ) $ (50,554 ) $ (82,991 ) Other comprehensive (loss) income before reclassifications - our derivatives (11,549 ) (11,116 ) 903 Other comprehensive (loss) income before reclassifications - our Fund's derivative (1,922 ) (1,767 ) 1,779 Reclassifications from AOCI - our derivatives (1) 37,390 36,923 36,331 Reclassifications from AOCI - our Fund's derivative (2) 931 1,005 549 Net current period OCI 24,850 25,045 39,562 Less OCI attributable to noncontrolling interests (4,046 ) (4,580 ) (7,125 ) OCI attributable to common stockholders 20,804 20,465 32,437 Ending balance $ (9,285 ) $ (30,089 ) $ (50,554 ) __________________________________________________ (1) Reclassification as an increase to interest expense. (2) Reclassification as a decrease to income, including depreciation, from unconsolidated real estate funds. (3) See Note 9 for the details of our derivatives and Note 13 for our derivative fair value disclosures.
Common Stock Dividends Classification For United States Federal Income Tax Purposes	Our common stock dividends paid during 2015 are classified for federal income tax purposes as follows: Record Date Paid Date Dividend Per Share Ordinary Income Capital Gain Return of Capital 12/30/2014 1/15/2015 $0.21 $0.0735 $— $0.1365 3/31/2015 4/15/2015 0.21 0.0735 — 0.1365 6/30/2015 7/15/2015 0.21 0.0735 — 0.1365 9/30/2015 10/15/2015 0.21 0.0735 — 0.1365 Total: $0.84 $0.2940 $— $0.5460

EPS (Tables)

EPS (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The table below presents the calculation of basic and diluted EPS: Year Ended December 31, 2015 2014 2013 Numerator (in thousands): Net income attributable to common stockholders $ 58,384 $ 44,621 $ 45,311 Allocation to participating securities: Unvested LTIP Units (312 ) (175 ) (178 ) Numerator for basic and diluted net income attributable to common stockholders $ 58,072 $ 44,446 $ 45,133 Denominator (in thousands): Weighted average shares of common stock outstanding - basic 146,089 144,013 142,556 Effect of dilutive securities: Stock options (1) 4,515 4,108 3,288 Weighted average shares of common stock and common stock equivalents outstanding - diluted 150,604 148,121 145,844 Basic EPS: Net income attributable to common stockholders per share $ 0.398 $ 0.309 $ 0.317 Diluted EPS: Net income attributable to common stockholders per share $ 0.386 $ 0.300 $ 0.309 ____________________________________________________ (1) The following securities (in thousands) were excluded from the computation of the weighted average diluted shares because the effect of including them would be anti-dilutive to the calculation of diluted EPS: Year Ended December 31, 2015 2014 2013 OP Units 26,371 27,444 28,026 Vested LTIP Units 181 130 355 Unvested LTIP Units 622 526 577

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Share-based Compensation [Abstract]
Summary of Outstanding Stock Options	The table below presents the activity of our outstanding stock options: Stock Options: Number of Stock Options (thousands) Weighted Average Exercise Price Weighted Average Remaining Contract Life (months) Total Intrinsic Value (thousands) Outstanding at December 31, 2012 12,540 $ 18.10 59 $ 65,177 Granted — Outstanding at December 31, 2013 12,540 18.10 47 $ 65,051 Granted — Exercised (731 ) 20.03 Outstanding at December 31, 2014 11,809 17.98 36 $ 123,017 Granted — Exercised (274 ) 15.58 Outstanding at December 31, 2015 11,535 18.04 23 $ 151,569 Exercisable at December 31, 2015 11,535 18.04 23 $ 151,569
Schedule of Unvested LTIP Units	The table below presents the activity of our unvested LTIP Units: Unvested LTIP Units: Number of Units (thousands) Weighted Average Grant Date Fair Value Outstanding at December 31, 2012 891 $ 15.12 Granted 663 15.26 Vested (785 ) 14.15 Forfeited (15 ) 21.52 Outstanding at December 31, 2013 754 15.63 Granted 1,106 19.31 Vested (854 ) 17.44 Forfeited (8 ) 22.48 Outstanding at December 31, 2014 998 18.48 Granted 922 20.26 Vested (816 ) 18.59 Forfeited (8 ) 24.86 Outstanding at December 31, 2015 1,096 19.85

Fair Value of Financial Instr40

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Estimated Fair Value of Secured Notes Payable	The table below presents (in thousands) the estimated fair value of our secured notes payable: Secured Notes Payable: December 31, 2015 December 31, 2014 Fair value $ 3,691,075 $ 3,293,351 Carrying value $ 3,634,163 $ 3,253,290
Schedule of Estimated Fair Value of Derivatives	The table below presents (in thousands) the estimated fair value of our derivatives: December 31, 2015 December 31, 2014 Derivative Assets: Fair value - our derivatives (1) $ 4,830 $ — Fair value - our Fund's derivative (2) $ 837 $ 2,282 Derivative Liabilities: Fair value - our derivatives (1) $ 16,310 $ 37,386 ___________________________________________________________________________________ (1) The fair value of our derivatives are included in interest rate contracts in our consolidated balance sheet. (2) The fair value presented represents 100.00% , not our pro-rata share, of the fair value related to our Fund's derivative. At December 31, 2015 , we held an equity interest of 68.61% of that Fund. Our pro-rata share of the fair value of the Fund's derivative is included in our investment in unconsolidated real estate funds in our consolidated balance sheet. See Note 5 for more information regarding our Funds.

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Operating Activity Within Reportable Segments	The table below presents (in thousands) the operating activity of our reportable segments: Year Ended December 31, 2015 2014 2013 Office Segment Total office revenues $ 540,975 $ 519,405 $ 514,583 Office expenses (186,556 ) (181,160 ) (174,935 ) Office Segment profit 354,419 338,245 339,648 Multifamily Segment Total multifamily revenues 94,799 80,117 76,936 Multifamily expenses (23,862 ) (20,664 ) (19,928 ) Multifamily Segment profit 70,937 59,453 57,008 Total profit from all segments $ 425,356 $ 397,698 $ 396,656
Reconciliation Of Segment Profit To Net Loss Attributable To Common Stockholders	The table below (in thousands) is a reconciliation of the total profit from all segments to net income attributable to common stockholders: Year Ended December 31, 2015 2014 2013 Total profit from all segments $ 425,356 $ 397,698 $ 396,656 General and administrative expenses (30,496 ) (27,332 ) (26,614 ) Depreciation and amortization (205,333 ) (202,512 ) (191,351 ) Other income 15,228 17,675 6,402 Other expenses (6,470 ) (7,095 ) (4,199 ) Income, including depreciation, from unconsolidated real estate funds 7,694 3,713 3,098 Interest expense (135,453 ) (128,507 ) (130,548 ) Acquisition-related expenses (1,771 ) (786 ) (607 ) Net income 68,755 52,854 52,837 Less: Net income attributable to noncontrolling interests (10,371 ) (8,233 ) (7,526 ) Net income attributable to common stockholders $ 58,384 $ 44,621 $ 45,311

Future Minimum Lease Receipts (

Future Minimum Lease Receipts (Tables)	12 Months Ended
	Dec. 31, 2015
Operating Leases, Future Minimum Payments Receivable [Abstract]
Schedule Of Future Minimum Base Rentals On Non-Cancelable Office And Ground Operating Leases	The table below presents (in thousands) the future minimum base rentals on our non-cancelable office tenant and ground operating leases at December 31, 2015 : Minimum base rentals (1) during: 2016 $ 396,812 2017 358,267 2018 295,593 2019 242,862 2020 190,154 Thereafter 540,485 Total future minimum base rentals $ 2,024,173 _____________________________________________________ (1) Does not include (i) residential leases, which typically have a term of one year or less, (ii) tenant reimbursements, (iii) straight line rent, (iv) amortization/accretion of acquired above/below-market lease intangibles and (v) percentage rents. The amounts assume that those tenants with early termination options do not exercise them.

Future Minimum Lease Payments (

Future Minimum Lease Payments (Tables)	12 Months Ended
	Dec. 31, 2015
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Future Minimum Ground Lease Payments	The table below presents (in thousands) the future minimum ground lease payments as of December 31, 2015 under our remaining ground lease: Minimum ground lease payments during: 2016 $ 733 2017 733 2018 733 2019 733 2020 733 Thereafter 48,377 Total future minimum lease payments (1) $ 52,042 ___________________________________________________ (1) Lease term ends on December 31, 2086. Ground rent is fixed at $733 thousand per year until February 28, 2019, and will then be reset to the greater of the existing ground rent or market. The table above assumes that the rental payments will continue to be $733 thousand per year after February 28, 2019.

Quarterly Financial Informati44

Quarterly Financial Information (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information [Abstract]
Schedule of Quarterly Financial Information	The tables below present (in thousands, except per share amounts) selected quarterly information for 2015 and 2014 : Three Months Ended March 31, June 30, 2015 September 30, 2015 December 31, 2015 Total revenue $ 154,809 $ 160,457 $ 160,077 $ 160,431 Net income before noncontrolling interests 22,096 15,894 14,159 16,606 Net income attributable to common stockholders 18,699 13,448 12,070 14,167 Net income per common share - basic $ 0.128 $ 0.092 $ 0.082 $ 0.096 Net income per common share - diluted $ 0.124 $ 0.089 $ 0.080 $ 0.093 Weighted average shares of common stock outstanding - basic 145,327 145,898 146,331 146,780 Weighted average shares of common stock and common stock equivalents outstanding - diluted 149,802 150,304 150,740 151,531 Three Months Ended March 31, 2014 June 30, 2014 September 30, 2014 December 31, 2014 Total revenue $ 148,872 $ 151,422 $ 148,141 $ 151,087 Net income before noncontrolling interests 15,458 15,917 8,681 12,798 Net income attributable to common stockholders 12,976 13,363 7,389 10,893 Net income per common share - basic $ 0.090 $ 0.093 $ 0.051 $ 0.075 Net income per common share - diluted $ 0.088 $ 0.090 $ 0.050 $ 0.073 Weighted average shares of common stock outstanding - basic 143,140 143,717 144,361 144,823 Weighted average shares of common stock and common stock equivalents outstanding - diluted 146,861 147,945 148,641 148,943

Overview (Details)

Overview (Details)	Dec. 31, 2015office_propertypropertyland_parcel
Overview [Line Items]
Number of office properties owned | office_property	62
Wholly Owned Consolidated Office Properties [Member]
Overview [Line Items]
Number of office properties owned | property	54
Number of multifamily properties owned | property	10
Number of land parcels | land_parcel	2
Partially Owned Properties [Member]
Overview [Line Items]
Number of office properties owned | office_property	8

Summary of Significant Accoun46

Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)segmentsubsidiary	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Apr. 30, 2013USD ($)
Tenant improvements, fully depreciated, written off	$ 16,000	$ 84,600
Leasing intangibles, fully amortized, written off	17,100	82,600
Above-market leases, fully amortized, written off	220	32,230	$ 0
Write-off of fully accreted acquired lease intangible liabilities	49,576	137,313	0
Development costs capitalized	3,800	4,300
Interest costs capitalized	940	294
Additional basis	2,900	2,900
Note receivable from related party	800
Lease termination revenue	2,200	2,600	700
Revenue recognized for leasehold improvements	1,900	1,700	1,800
Letters of credit held for security	14,700	14,700
Security deposits	38,683	37,450
Increase (decrease) in the allowance for doubtful accounts	$ 223	(461)	(98)
Number of segments | segment	2
Percentage of minimum distribution of taxable income to qualify as a REIT (at least)	90.00%
Number of subsidiaries elected to be treated as taxable REIT subsidiaries | subsidiary	2
Deferred loan costs	$ 22,887	15,623
Other Assets [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]
Deferred loan costs	(22,900)	(15,600)
Long-term Debt [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]
Deferred loan costs	22,900	15,600
Tenant Receivable [Member]
Allowance for doubtful accounts	2,200	2,000
Increase (decrease) in the allowance for doubtful accounts	(223)	461	98
Deferred Rent Receivable [Member]
Allowance for doubtful accounts	6,000	5,800
Increase (decrease) in the allowance for doubtful accounts	$ (242)	2,400	3,900
Building [Member]
Useful life	40 years
Site Improvements [Member]
Useful life	15 years
Fund X [Member]
Note receivable from related party		1,500	$ 300	$ 2,900
Above Market Tenant Leases [Member]
Above-market leases, fully amortized, written off	$ 200	32,200
Below Market Tenant Leases [Member]
Below-market leases, fully accreted, written off	37,400	$ 137,300
Above Market Ground Leases [Member]
Write-off of fully accreted acquired lease intangible liabilities	$ 12,200
Partnership X [Member]
Ownership percentage	24.25%
Fund X [Member]
Ownership percentage	68.61%

Investment In Real Estate (Narr

Investment In Real Estate (Narrative) (Details) ft² in Thousands, $ / multifamily_unit in Thousands, $ in Thousands	Mar. 05, 2015USD ($)ft²$ / ft²	Feb. 12, 2015USD ($)	Dec. 30, 2014USD ($)multifamily_unit$ / multifamily_unit	Dec. 31, 2015USD ($)property	Dec. 31, 2014USD ($)property	Dec. 31, 2013USD ($)property	Oct. 16, 2014USD ($)ft²$ / ft²	Aug. 15, 2013USD ($)ft²$ / ft²	May. 15, 2013USD ($)ft²$ / ft²
Real Estate Acquisition [Line Items]
Number of acquisitions | property				2	2	2
Amortization (accretion) of above and below market leases				$ (19,100)	$ (16,084)	$ (15,693)
Harbor Court Land [Member]
Real Estate Acquisition [Line Items]
Payments to acquire businesses, gross		$ 27,500
Real estate acquired purchase price		27,500
First Financial Plaza [Member]
Real Estate Acquisition [Line Items]
Payments to acquire businesses, gross	$ 92,400
Area of real estate property acquired (in square feet) | ft²	227
Price paid for real estate acquired per square foot | $ / ft²	407
Real estate acquired purchase price	$ 92,406
Carthay Campus [Member]
Real Estate Acquisition [Line Items]
Area of real estate property acquired (in square feet) | ft²							216
Price paid for real estate acquired per square foot | $ / ft²							345
Real estate acquired purchase price							$ 74,469
Waena [Member]
Real Estate Acquisition [Line Items]
Real estate acquired purchase price			$ 146,000
Number of multifamily units acquired | multifamily_unit			468
Price of real estate acquired (usd per multifamily unit) | $ / multifamily_unit			312
8484 Wilshire [Member]
Real Estate Acquisition [Line Items]
Area of real estate property acquired (in square feet) | ft²									225
Price paid for real estate acquired per square foot | $ / ft²									395
Real estate acquired purchase price									$ 89,000
16501 Ventura [Member]
Real Estate Acquisition [Line Items]
Area of real estate property acquired (in square feet) | ft²								191
Price paid for real estate acquired per square foot | $ / ft²								319
Real estate acquired purchase price								$ 61,000
Other Income [Member] | Above Market Ground Leases [Member]
Real Estate Acquisition [Line Items]
Amortization (accretion) of above and below market leases				$ (6,600)	$ (2,299)	$ (149)
Other Income [Member] | Above Market Ground Leases [Member] | Harbor Court Land [Member]
Real Estate Acquisition [Line Items]
Amortization (accretion) of above and below market leases		$ 6,600

Investment in Real Estate (Deta

Investment in Real Estate (Details) - USD ($) $ in Thousands	Mar. 05, 2015	Feb. 12, 2015	Dec. 30, 2014	Oct. 16, 2014	Aug. 15, 2013	May. 15, 2013
Harbor Court Land [Member]
Real Estate Acquisition [Line Items]
Land		$ 12,060
Buildings and improvements		15,440
Tenant improvements and lease intangibles		0
Acquired above and below-market leases, net		0
Net assets and liabilities acquired		$ 27,500
First Financial Plaza [Member]
Real Estate Acquisition [Line Items]
Land	$ 12,092
Buildings and improvements	75,039
Tenant improvements and lease intangibles	6,065
Acquired above and below-market leases, net	(790)
Net assets and liabilities acquired	$ 92,406
Carthay Campus [Member]
Real Estate Acquisition [Line Items]
Land				$ 6,595
Buildings and improvements				64,511
Tenant improvements and lease intangibles				5,943
Acquired above and below-market leases, net				(2,580)
Net assets and liabilities acquired				$ 74,469
Waena [Member]
Real Estate Acquisition [Line Items]
Land			$ 26,864
Buildings and improvements			117,541
Tenant improvements and lease intangibles			1,732
Acquired above and below-market leases, net			(137)
Net assets and liabilities acquired			$ 146,000
8484 Wilshire [Member]
Real Estate Acquisition [Line Items]
Land						$ 8,847
Buildings and improvements						77,158
Tenant improvements and lease intangibles						6,485
Acquired above and below-market leases, net						(3,490)
Net assets and liabilities acquired						$ 89,000
16501 Ventura [Member]
Real Estate Acquisition [Line Items]
Land					$ 6,759
Buildings and improvements					55,179
Tenant improvements and lease intangibles					4,736
Acquired above and below-market leases, net					(5,674)
Net assets and liabilities acquired					$ 61,000

Acquired Lease Intangibles (Sum

Acquired Lease Intangibles (Summary Of Acquired Lease Intangibles) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Acquired Lease Intangibles [Line Items]
Acquired lease intangible assets, net	$ 4,484	$ 3,527
Acquired lease intangible liabilities, net	28,605	45,959
Above Market Tenant Leases [Member]
Schedule Of Acquired Lease Intangibles [Line Items]
Acquired lease intangible assets, gross	4,661	3,040
Accumulated amortization	(2,670)	(2,082)
Below Market Ground Leases [Member]
Schedule Of Acquired Lease Intangibles [Line Items]
Acquired lease intangible assets, gross	3,198	3,198
Accumulated amortization	(705)	(629)
Below Market Tenant Leases [Member]
Schedule Of Acquired Lease Intangibles [Line Items]
Acquired lease intangible liabilities, gross	103,327	138,088
Accumulated accretion	(78,280)	(102,335)
Above Market Ground Leases [Member]
Schedule Of Acquired Lease Intangibles [Line Items]
Acquired lease intangible liabilities, gross	4,017	16,200
Accumulated accretion	$ (459)	$ (5,994)

Acquired Lease Intangibles (Sch

Acquired Lease Intangibles (Schedule Net Amortization Or Accretion) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Accretion of above and below market leases	$ 19,100	$ 16,084	$ 15,693
Operating Lease Revenue [Member] | Tenant Lease [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Accretion of above and below market leases	12,467	13,752	15,511
Office Parking And Other Income [Member] | Above Market Ground Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Accretion of above and below market leases	(17)	(17)	(17)
Office Expense [Member] | Above Market Ground Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Accretion of above and below market leases	50	50	50
Other Income [Member] | Above Market Ground Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Accretion of above and below market leases	$ 6,600	$ 2,299	$ 149

Acquired Lease Intangibles (Est

Acquired Lease Intangibles (Estimated Net Accretion for the Next Five Years) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Estimated Net Accretion for the Next Five Years [Abstract]
2,016	$ 7,919
2,017	3,624
2,018	3,144
2,019	2,970
2,020	1,461
Thereafter	5,002
Total	24,120
Revenue [Member]
Estimated Net Accretion for the Next Five Years [Abstract]
2,016	7,869
2,017	3,574
2,018	3,094
2,019	2,920
2,020	1,411
Thereafter	1,695
Total	20,563
Expense [Member]
Estimated Net Accretion for the Next Five Years [Abstract]
2,016	50
2,017	50
2,018	50
2,019	50
2,020	50
Thereafter	3,307
Total	$ 3,557

Investments In Unconsolidated52

Investments In Unconsolidated Real Estate Funds (Narrative) (Details) ft² in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)ft²office_propertyNumber_of_funds_managednote	Dec. 31, 2013USD ($)	Nov. 30, 2015USD ($)	Dec. 31, 2014USD ($)	Apr. 30, 2013USD ($)
Schedule of Equity Method Investments [Line Items]
Number of office properties owned | office_property	62
Note receivable from related party	$ 0.8
Percentage of amounts related to fund	100.00%
Partially Owned Properties [Member]
Schedule of Equity Method Investments [Line Items]
Number of real estate funds owned and managed | Number_of_funds_managed	2
Area of real estate property (in square feet) | ft²	1.8
Additional interest acquired, value		$ 8
Partnership X [Member]
Schedule of Equity Method Investments [Line Items]
Additional interest acquired, percent		0.90%
Fund X [Member]
Schedule of Equity Method Investments [Line Items]
Additional interest acquired, percent		3.30%
Fund X [Member]
Schedule of Equity Method Investments [Line Items]
Note receivable from related party		$ 0.3		$ 1.5	$ 2.9
Related party transaction date	Apr. 1, 2017
Partnership X [Member]
Schedule of Equity Method Investments [Line Items]
Note receivable from related party	$ 0.5		$ 0.5
Related party transaction date	Mar. 31, 2016
Partially Owned Properties [Member]
Schedule of Equity Method Investments [Line Items]
Number of office properties owned | office_property	8
Fund X [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	68.61%
Number of unsecured notes receivable | note	2
Partnership X [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	24.25%
LIBOR [Member] | Fund X [Member]
Schedule of Equity Method Investments [Line Items]
Variable rate description	LIBOR plus 2.5%
Basis spread	2.50%
LIBOR [Member] | Partnership X [Member]
Schedule of Equity Method Investments [Line Items]
Variable rate description	LIBOR plus 2.5%
Basis spread	2.50%

Investments In Unconsolidated53

Investments In Unconsolidated Real Estate Funds (Summary Of Financial Position For Investments In Unconsolidated Real Estate Funds) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Real Estate Investments, Net [Abstract]
Cash distributions received from our Funds	$ 11,856	$ 12,423	$ 8,301
Total assets	691,543	703,130
Total liabilities	389,372	389,413
Total equity	$ 302,171	$ 313,717

Investments In Unconsolidated54

Investments In Unconsolidated Real Estate Funds (Summary Of Statement Of Operations For Investments In Unconsolidated Real Estate Funds) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Real Estate Investments, Net [Abstract]
Total revenues	$ 69,702	$ 66,234	$ 63,976
Operating income	17,866	11,737	10,151
Net income	$ 6,323	$ 254	$ (829)

Other Assets (Schedule Of Other

Other Assets (Schedule Of Other Assets) (Details) $ in Thousands	Feb. 12, 2015USD ($)shares	Dec. 31, 2015USD ($)office_propertypropertyshares	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Schedule of Equity Method Investments [Line Items]
Note receivable	$ 27,500	$ 0	$ 27,500
Restricted cash		194	194
Prepaid expenses		6,720	6,108
Other indefinite-lived intangible		1,988	1,988
Deposits in escrow		75,000	2,500
Furniture, fixtures and equipment, net		1,448	1,425
Other		2,370	1,932
Total other assets		87,720	41,647
Note receivable, cash consideration, repayment	1,000	$ 1,000	0	$ 0
Note receivable, non cash consideration repayment	$ 26,500
Issued in exchange for contributed property | shares	34,412	34,000
Issuance of OP Units in exchange for land and building acquired	$ 1,000	$ 1,000	$ 0	$ 0
Number of office properties | office_property		62
Westwood Submarket [Member]
Schedule of Equity Method Investments [Line Items]
Deposits in escrow		$ 75,000
Westwood Submarket [Member] | Office Building [Member]
Schedule of Equity Method Investments [Line Items]
Number of office properties | property		4

Secured Notes Payable and Rev56

Secured Notes Payable and Revolving Credit Facility (Schedule Of Secured Notes Payable) (Details)	12 Months Ended
	Dec. 31, 2015USD ($)propertycollateral_poolRate	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Debt Instrument [Line Items]
Aggregate loan principal	$ 3,634,163,000	$ 3,253,290,000
Total	3,634,163,000	3,435,290,000
Deferred loan costs, net	(22,887,000)	(15,623,000)
Total, net	$ 3,611,276,000	3,419,667,000
Weighted average remaining life of outstanding term debt	4 years 6 months
Debt at fixed interest rate	$ 3,630,000,000
Weighted average remaining life of interest rate swaps and fixed rate debt (in years)	4 years 6 months
Weighted average interest rate for fixed & effectively fixed rate debt	3.60%
Effective weighted average interest rate for fixed & effectively fixed rate debt	3.72%
Number of properties in collateral pools | property	6
Ownership percentage in joint venture	66.67%
Debt amortization period	30 years
Net accumulated amortization	$ 15,200,000	13,000,000
Amortization of deferred loan costs	$ 6,969,000	4,097,000	$ 4,214,000
Fannie Mae Loan, Maturity Date 3/1/2016 [Member]
Debt Instrument [Line Items]
Maturity Date	Mar. 1, 2016
Aggregate loan principal	$ 0	82,000,000
Variable Interest Rate	LIBOR + 0.62%
Term Loan With Maturity Date 3/1/2016 [Member]
Debt Instrument [Line Items]
Maturity Date	Mar. 1, 2016
Aggregate loan principal	$ 15,740,000	16,140,000
Variable Interest Rate	LIBOR + 1.60%
Annual fixed interest rate	3.72%
Swap Maturity Date	Apr. 1, 2016
Term Loan, Maturity Date 12/24/2016 [Member]
Debt Instrument [Line Items]
Maturity Date	Dec. 24, 2016
Aggregate loan principal	$ 20,000,000	20,000,000
Variable Interest Rate	LIBOR + 1.45%
Annual fixed interest rate	3.57%
Swap Maturity Date	Apr. 1, 2016
Fannie Mae Loans, Maturity Date 6/1/17 [Member]
Debt Instrument [Line Items]
Maturity Date	Jun. 1, 2017
Aggregate loan principal	$ 0	18,000,000
Variable Interest Rate	LIBOR + 0.62%
Term Loan With Effective Annual Fixed Interest Rate At 4.45% [Member]
Debt Instrument [Line Items]
Maturity Date	Oct. 2, 2017
Aggregate loan principal	$ 0	400,000,000
Variable Interest Rate	LIBOR + 2.00%
Annual fixed interest rate	4.45%
Swap Maturity Date	Jul. 1, 2015
Term Loan With Effective Annual Fixed Interest Rate At 4.12% [Member]
Debt Instrument [Line Items]
Maturity Date	Apr. 2, 2018
Aggregate loan principal	$ 256,140,000	510,000,000
Variable Interest Rate	LIBOR + 2.00%
Annual fixed interest rate	4.12%
Swap Maturity Date	Apr. 1, 2016
Term Loan With Effective Annual Fixed Interest Rate At 3.74% [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 1, 2018
Aggregate loan principal	$ 530,000,000	530,000,000
Variable Interest Rate	LIBOR + 1.70%
Annual fixed interest rate	3.74%
Swap Maturity Date	Aug. 1, 2016
Term Loan With Effective Annual Fixed Interest Rate At 4.14% [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 5, 2018
Aggregate loan principal	$ 355,000,000	355,000,000
Annual fixed interest rate	4.14%
Monthly interest-only payments end date	Feb. 5, 2016
Term Loan With Effective Annual Fixed Interest Rate At 4.00% [Member]
Debt Instrument [Line Items]
Maturity Date	Feb. 1, 2019
Aggregate loan principal	$ 152,733,000	155,000,000
Annual fixed interest rate	4.00%
Long term Fixed Rate Debt with effective interest rate of 3.85% [Member]
Debt Instrument [Line Items]
Maturity Date	Jun. 5, 2019
Aggregate loan principal	$ 285,000,000	285,000,000
Annual fixed interest rate	3.85%
Monthly interest-only payments end date	Feb. 5, 2017
Fannie Mae Loans, Maturity Date 10/1/2019 [Member]
Debt Instrument [Line Items]
Maturity Date	Oct. 1, 2019
Aggregate loan principal	$ 145,000,000	145,000,000
Variable Interest Rate	LIBOR + 1.25%
Annual fixed interest rate	3.37%
Swap Maturity Date	Apr. 1, 2016
Term Loan With Effective Annual Fixed Interest Rate At 4.46% [Member]
Debt Instrument [Line Items]
Maturity Date	Mar. 1, 2020
Aggregate loan principal	$ 349,070,000	349,070,000
Annual fixed interest rate	4.46%
Monthly interest-only payments end date	May 1, 2016
Debt instrument period of fixed interest end date	Mar. 1, 2018
Fannie Mae Loans With Effective Annual Fixed Interest Rate At Three Point Six Five Percentage [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 2, 2020
Aggregate loan principal	$ 388,080,000	388,080,000
Variable Interest Rate	LIBOR + 1.65%
Annual fixed interest rate	3.65%
Swap Maturity Date	Nov. 1, 2017
Term Loan With Maturity Date of 04/15/2022 [Member]
Debt Instrument [Line Items]
Maturity Date	Apr. 15, 2022
Aggregate loan principal	$ 340,000,000	0
Variable Interest Rate	LIBOR + 1.40%
Annual fixed interest rate	2.77%
Swap Maturity Date	Apr. 1, 2020
Term Loan With Effective Annual Fixed Interest Rate At 3.06% [Member]
Debt Instrument [Line Items]
Maturity Date	Jul. 27, 2022
Aggregate loan principal	$ 180,000,000	0
Variable Interest Rate	LIBOR + 1.45%
Annual fixed interest rate	3.06%
Swap Maturity Date	Jul. 1, 2020
Term Loan, Fixed Interest rate of 2.64% [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 2, 2022
Aggregate loan principal	$ 400,000,000	0
Variable Interest Rate	LIBOR + 1.35%
Annual fixed interest rate	2.64%
Swap Maturity Date	Nov. 1, 2020
Fannie Mae Loan With Maturity Date Of 04/1/2025 [Member]
Debt Instrument [Line Items]
Maturity Date	Apr. 1, 2025
Aggregate loan principal	$ 102,400,000	0
Variable Interest Rate	LIBOR + 1.25%
Annual fixed interest rate	2.84%
Swap Maturity Date	Mar. 1, 2020
Fannie Mae Loan, Maturity Date 12/10/2025 [Member]
Debt Instrument [Line Items]
Maturity Date	Dec. 10, 2025
Aggregate loan principal	$ 115,000,000	0
Variable Interest Rate	LIBOR + 1.25%
Annual fixed interest rate	2.76%
Swap Maturity Date	Dec. 1, 2020
Revolving Credit Facility With Maturity Date 08/21/2020 [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 21, 2020
Revolving credit facility	$ 0	182,000,000
Variable Interest Rate	LIBOR + 1.40%
Number of collateral pools | collateral_pool	3
Revolving credit facility, maximum borrowing capacity	$ 400,000,000
Effective Fixed Rate Loans [Member]
Debt Instrument [Line Items]
Total	$ 2,492,360,000	1,828,080,000
Fixed Interest Rate	3.35%
Fixed Rate Loans [Member]
Debt Instrument [Line Items]
Total	$ 1,141,803,000	1,144,070,000
Fixed Interest Rate	4.15%
Weighted average life of fixed interest rate for fixed & effectively fixed rate debt (in years)	2 years 7 months
Variable Rate Loans [Member]
Debt Instrument [Line Items]
Total	$ 0	$ 463,140,000
LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.40%
LIBOR [Member] | Fannie Mae Loan, Maturity Date 3/1/2016 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.62%
LIBOR [Member] | Term Loan With Maturity Date 3/1/2016 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.60%
LIBOR [Member] | Term Loan, Maturity Date 12/24/2016 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.45%
LIBOR [Member] | Fannie Mae Loans, Maturity Date 6/1/17 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.62%
LIBOR [Member] | Term Loan With Effective Annual Fixed Interest Rate At 4.45% [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
LIBOR [Member] | Term Loan With Effective Annual Fixed Interest Rate At 4.12% [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
LIBOR [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.74% [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.70%
LIBOR [Member] | Fannie Mae Loans, Maturity Date 10/1/2019 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
LIBOR [Member] | Fannie Mae Loans With Effective Annual Fixed Interest Rate At Three Point Six Five Percentage [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.65%
LIBOR [Member] | Term Loan With Maturity Date of 04/15/2022 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.40%
LIBOR [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.06% [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.45%
LIBOR [Member] | Term Loan, Fixed Interest rate of 2.64% [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.35%
LIBOR [Member] | Fannie Mae Loan With Maturity Date Of 04/1/2025 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
LIBOR [Member] | Fannie Mae Loan, Maturity Date 12/10/2025 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
outstanding principal is greater than $100,000,000 [Member] | Revolving Credit Facility With Maturity Date 08/21/2020 [Member]
Debt Instrument [Line Items]
Commitment fee, percentage | Rate	0.15%
outstanding principal is less than $100,000,000 [Member] | Revolving Credit Facility With Maturity Date 08/21/2020 [Member]
Debt Instrument [Line Items]
Commitment fee, percentage | Rate	0.20%

Secured Notes Payable and Rev57

Secured Notes Payable and Revolving Credit Facility (Schedule Of Minimum Future Principal Payments Due On Secured Notes Payable) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Secured Debt [Abstract]
2,016	$ 46,939
2,017	19,410
2,018	1,478,014
2,019	564,320
2,020	683,080
Thereafter	842,400
Total future principal payments	$ 3,634,163	$ 3,435,290

Interest Payable, Accounts Pa58

Interest Payable, Accounts Payable and Deferred Revenue (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accounts Payable and Accrued Liabilities [Abstract]
Interest payable	$ 10,028	$ 9,656
Accounts payable and accrued liabilities	23,716	22,195
Deferred revenue	23,673	22,513
Total interest payable, accounts payable and deferred revenue	$ 57,417	$ 54,364

Derivative Contracts (Narrative

Derivative Contracts (Narrative) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Derivative [Line Items]
Derivative designated as cash flow hedge to be reclassified	$ 20,200
Fund X [Member]
Derivative [Line Items]
Derivative designated as cash flow hedge to be reclassified	$ 193

Derivative Contracts (Summary o

Derivative Contracts (Summary of Derivatives) (Details) $ in Thousands	Dec. 31, 2015USD ($)instrument
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Number of Interest Rate Swaps | instrument	15
Notional | $	$ 2,565,480
Fund X [Member]
Derivative [Line Items]
Ownership percentage	68.61%
Fund X [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Ownership percentage	68.61%
Fund X [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Number of Interest Rate Swaps | instrument	1
Notional | $	$ 325,000
Percentage of notional amount	100.00%

Derivative Contracts (Schedule

Derivative Contracts (Schedule of Fair Value in a Asset or Liability Position) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Interest rate contract assets	$ 4,830	$ 0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Fair value of derivatives in a net liability position	19,047	$ 40,953
Interest rate contract assets	4,200
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Fund X [Member]
Derivative [Line Items]
Interest rate contract assets	$ 737

Derivative Contracts (Effect of

Derivative Contracts (Effect of Derivative Instruments on OCI and Statements of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
(Loss) gain recorded in AOCI (effective portion)	$ (11,549)	$ (11,116)	$ 903
Cash Flow Hedging [Member] | Derivatives Designated As Hedges [Member]
Derivative [Line Items]
(Loss) gain recorded in AOCI (effective portion)	(11,549)	(11,116)	903
Loss reclassified from AOCI (effective portion)	(37,390)	(36,873)	(36,246)
Interest Expense [Member] | Cash Flow Hedging [Member] | Derivatives Designated As Hedges [Member]
Derivative [Line Items]
Loss reclassified from AOCI (ineffective portion)	0	(50)	(85)
Gain recorded as interest expense (ineffective portion)	66	0	0
Interest Expense [Member] | Cash Flow Hedging [Member] | Derivatives Not Designated As Hedges [Member]
Derivative [Line Items]
Loss recorded as interest expense	0	0	(4)
Fund X [Member]
Derivative [Line Items]
(Loss) gain recorded in AOCI (effective portion)	(1,922)	(1,767)	1,779
Fund X [Member] | Cash Flow Hedging [Member] | Derivatives Designated As Hedges [Member]
Derivative [Line Items]
(Loss) gain recorded in AOCI (effective portion)	(1,922)	(1,767)	1,779
Loss reclassified from AOCI (effective portion)	$ (931)	$ (1,005)	$ (549)

Equity (Narrative) (Details)

Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Feb. 12, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stockholders' Equity Attributable to Parent [Abstract]
Number of operating partnership units converted to shares of common stock		1,800,000	2,200,000	1,400,000
Exercise of stock options (in shares)		274,000	40,000
Exercise of stock options		$ 4,272	$ 603	$ 0
Exercise of stock options, average share price (usd per share)		$ 15.58	$ 15.05
Issuance of OP units	34,412	34,000
Issuance of OP Units in exchange for land and building acquired	$ 1,000	$ 1,000	$ 0	$ 0
Number of operating partnership units redeemed for cash			120,000	13,000
Total purchase price		0	$ 2,826	$ 352
Average redemption price (usd per share)			$ 23.56	$ 26.68
Common stock options settled (in shares)			691,000
Purchase price of stock options		$ 0	$ 4,524	$ 0
Average purchase price of options (usd per share)			$ 6.55
Noncontrolling interest, ownership percentage by noncontrolling owners		15.00%
Common stock, shares outstanding (in shares)		146,919,187	144,869,101
Operating partnership units and fully-vested long-term incentive plan units outstanding		26,700,000
Number of shares of common stock issued upon redemption of one OP unit		1

Equity (Net Income Attributable

Equity (Net Income Attributable To Common Stockholders And Transfers (To) From Noncontrolling Interests) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stockholders' Equity Attributable to Parent [Abstract]
Net income attributable to common stockholders	$ 14,167	$ 12,070	$ 13,448	$ 18,699	$ 10,893	$ 7,389	$ 13,363	$ 12,976	$ 58,384	$ 44,621	$ 45,311
Common stock issued in exchange for OP Units									23,703	30,035	18,684
Repurchase of OP Units from noncontrolling interests									0	(1,197)	(173)
Net transfers from noncontrolling interests									23,703	28,838	18,511
Change from net income attributable to common stockholders and transfers from noncontrolling interests									$ 82,087	$ 73,459	$ 63,822

Equity (Accumulated Other Compr

Equity (Accumulated Other Comprehensive Income (Loss) Schedule) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	$ (30,089)
Net current period other comprehensive income	24,850	$ 25,045	$ 39,562
Balance at end of period	(9,285)	(30,089)
Cash Flow Hedging [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(30,089)	(50,554)	(82,991)
Other comprehensive (loss) income before reclassifications	(11,549)	(11,116)	903
Reclassifications from AOCI	37,390	36,923	36,331
Net current period other comprehensive income	24,850	25,045	39,562
Less other comprehensive income attributable to noncontrolling interests	(4,046)	(4,580)	(7,125)
Other comprehensive income attributable to common stockholders	20,804	20,465	32,437
Balance at end of period	(9,285)	(30,089)	(50,554)
Fund X [Member] | Cash Flow Hedging [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive (loss) income before reclassifications	(1,922)	(1,767)	1,779
Reclassifications from AOCI	$ 931	$ 1,005	$ 549

Equity (Dividends) (Details)

Equity (Dividends) (Details)	12 Months Ended
	Dec. 31, 2015$ / shares
Dividends Payable [Line Items]
Dividend Per Share (usd per share)	$ 0.84
Ordinary Income (usd per share)	0.2940
Capital Gain (usd per share)	0
Return of Capital (usd per share)	$ 0.5460
Dividends Paid, 1/15/2015 [Member]
Dividends Payable [Line Items]
Record Date	Dec. 30, 2014
Paid Date	Jan. 15, 2015
Dividend Per Share (usd per share)	$ 0.21
Ordinary Income (usd per share)	0.0735
Capital Gain (usd per share)	0
Return of Capital (usd per share)	$ 0.1365
Dividends Paid, 4/15/2015 [Member]
Dividends Payable [Line Items]
Record Date	Mar. 31, 2015
Paid Date	Apr. 15, 2015
Dividend Per Share (usd per share)	$ 0.21
Ordinary Income (usd per share)	0.0735
Capital Gain (usd per share)	0
Return of Capital (usd per share)	$ 0.1365
Dividends Paid, 7/15/2015 [Member]
Dividends Payable [Line Items]
Record Date	Jun. 30, 2015
Paid Date	Jul. 15, 2015
Dividend Per Share (usd per share)	$ 0.21
Ordinary Income (usd per share)	0.0735
Capital Gain (usd per share)	0
Return of Capital (usd per share)	$ 0.1365
Dividends Paid, 10/15/2015 [Member]
Dividends Payable [Line Items]
Record Date	Sep. 30, 2015
Paid Date	Oct. 15, 2015
Dividend Per Share (usd per share)	$ 0.21
Ordinary Income (usd per share)	0.0735
Capital Gain (usd per share)	0
Return of Capital (usd per share)	$ 0.1365

EPS (Details)

EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net income attributable to common stockholders	$ 14,167	$ 12,070	$ 13,448	$ 18,699	$ 10,893	$ 7,389	$ 13,363	$ 12,976	$ 58,384	$ 44,621	$ 45,311
Allocation to participating securities: Unvested LTIP Units									(312)	(175)	(178)
Numerator for basic and diluted net income attributable to common stockholders									$ 58,072	$ 44,446	$ 45,133
Weighted average shares of common stock outstanding - basic (in shares)	146,780,000	146,331,000	145,898,000	145,327,000	144,823,000	144,361,000	143,717,000	143,140,000	146,089,000	144,013,000	142,556,000
Effect of dilutive securities: Stock options (in shares)									4,515,000	4,108,000	3,288,000
Weighted average shares of common stock and common stock equivalents outstanding - diluted (in shares)	151,531,000	150,740,000	150,304,000	149,802,000	148,943,000	148,641,000	147,945,000	146,861,000	150,604,000	148,121,000	145,844,000
Net income attributable to common stockholders per share - basic EPS (dollars per share)	$ 0.096	$ 0.082	$ 0.092	$ 0.128	$ 0.075	$ 0.051	$ 0.093	$ 0.090	$ 0.398	$ 0.309	$ 0.317
Net income attributable to common stockholders per share - diluted EPS (dollars per share)	$ 0.093	$ 0.080	$ 0.089	$ 0.124	$ 0.073	$ 0.050	$ 0.090	$ 0.088	$ 0.386	$ 0.300	$ 0.309
OP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted EPS (in shares)									26,371	27,444	28,026
Vested LTIP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted EPS (in shares)									181	130	355
Unvested LTIP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted EPS (in shares)									622	526	577

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)installmentshares	Dec. 31, 2014USD ($)shares	Dec. 31, 2013USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant	14,800,000
Number of full value shares counted against overall limits of the stock incentive plan	2
Number of shares counted against overall limits of the stock incentive plan, vesting in over five years	1
Number of shares counted against overall limits of the stock incentive plan, vesting in five years or less	0.9
Awards granted to key employees (in shares)	900,000	1,100,000	600,000
Non-employee director awards granted in lieu of cash compensation (in shares)	33,000	15,000	19,000
Equity compensation expense | $	$ 15,234	$ 13,722	$ 10,005
Capitalized stock-based compensation | $	1,358	1,086	800
Total grant fair value of LTIP units | $	18,700	21,400	10,100
Total grant date fair value of LTIP units which vested during the period | $	15,200	14,800	$ 11,100
Intrinsic value of options exercised | $	4,000	$ 5,000
Unrecognized compensation cost related to nonvested options and LTIP unit awards | $	$ 17,300
Unrecognized compensation cost related to nonvested options and LTIP unit awards, recognition period	24 months
New Non-Employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-employee director awards granted in lieu of cash compensation (in shares)	1,000
Stock Appreciation Rights and Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Long-term Incentive Plan Units [Member] | Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Number of annual vesting installments | installment	3
Long-term Incentive Plan Units [Member] | Executives And Certain Key Employees [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Long-term Incentive Plan Units [Member] | Executives And Certain Key Employees [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Long-term Incentive Plan Units [Member] | Non-employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

Stock-Based Compensation (Outst

Stock-Based Compensation (Outstanding Stock Options) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Number of Stock Options (thousands)
Outstanding, beginning balance (in shares)	11,809	12,540	12,540
Granted (in shares)	0	0	0
Exercised (in shares)	(274)	(731)
Outstanding, ending balance (in shares)	11,535	11,809	12,540	12,540
Exercisable (in shares)	11,535
Weighted Average Exercise Price
Outstanding, weighted average exercise price, beginning balance (usd per share)	$ 17.98	$ 18.10	$ 18.10
Exercised (usd per share)	15.58	20.03
Outstanding, weighted average exercise price, ending balance (usd per share)	18.04	$ 17.98	$ 18.10	$ 18.10
Exercisable, weighted average exercise price (usd per share)	$ 18.04
Weighted Average Remaining Contract Life (months)	23 months	36 months	47 months	59 months
Exercisable, Weighted Average Remaining Contract Life	23 months
Total Intrinsic Value	$ 151,569	$ 123,017	$ 65,051	$ 65,177
Exercisable, Total Intrinsic Value	$ 151,569

Stock-Based Compensation (Unves

Stock-Based Compensation (Unvested LTIP Units) (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Number of Units (thousands)
Outstanding, beginning balance (in shares)	998	754	891
Granted (in shares)	922	1,106	663
Vested (in shares)	(816)	(854)	(785)
Forfeited (in shares)	(8)	(8)	(15)
Outstanding, ending balance (in shares)	1,096	998	754
Weighted Average Grant Date Fair Value
Outstanding, weighted average grant date fair value, beginning balance (usd per share)	$ 18.48	$ 15.63	$ 15.12
Granted (usd per share)	20.26	19.31	15.26
Vested (usd per share)	18.59	17.44	14.15
Forfeited (usd per share)	24.86	22.48	21.52
Outstanding, weighted average grant date fair value, ending balance (usd per share)	$ 19.85	$ 18.48	$ 15.63

Fair Value of Financial Instr71

Fair Value of Financial Instruments - Estimated Fair Value of Secured Notes Payable (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair value	$ 3,691,075	$ 3,293,351
Carrying value	$ 3,634,163	$ 3,253,290

Fair Value of Financial Instr72

Fair Value of Financial Instruments - Estimated Fair Value of Derivatives (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value - our derivatives	$ 4,830	$ 0
Fair value - our derivatives	16,310	37,386
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value - our derivatives	4,830	0
Fair value - our derivatives	$ 16,310	37,386
Fund X [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Ownership percentage	68.61%
Fund X [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value - our Fund's derivative	$ 837	$ 2,282
Interest Rate Swap [Member] | Fund X [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investment, summarized financial information, percentage of fair value of derivative	100.00%

Segment Reporting (Narrative) (

Segment Reporting (Narrative) (Details)	12 Months Ended
	Dec. 31, 2015segment
Segment Reporting [Abstract]
Number of segments	2

Segment Reporting (Operating Ac

Segment Reporting (Operating Activity Within Reportable Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total office revenues	$ 540,975	$ 519,405	$ 514,583
Office expenses	(186,556)	(181,160)	(174,935)
Total multifamily revenues	94,799	80,117	76,936
Multifamily expenses	(23,862)	(20,664)	(19,928)
Total profit from all segments	425,356	397,698	396,656
Office Segment [Member]
Segment Reporting Information [Line Items]
Total office revenues	540,975	519,405	514,583
Office expenses	(186,556)	(181,160)	(174,935)
Total profit from all segments	354,419	338,245	339,648
Multifamily Segment [Member]
Segment Reporting Information [Line Items]
Total multifamily revenues	94,799	80,117	76,936
Multifamily expenses	(23,862)	(20,664)	(19,928)
Total profit from all segments	$ 70,937	$ 59,453	$ 57,008

Segment Reporting (Reconciliati

Segment Reporting (Reconciliation Of Segment Profit To Net Income Attributable To Common Stockholders) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting [Abstract]
Total profit from all segments									$ 425,356	$ 397,698	$ 396,656
General and administrative expenses									(30,496)	(27,332)	(26,614)
Depreciation and amortization									(205,333)	(202,512)	(191,351)
Other income									15,228	17,675	6,402
Other expenses									(6,470)	(7,095)	(4,199)
Income, including depreciation, from unconsolidated real estate funds									7,694	3,713	3,098
Interest expense									(135,453)	(128,507)	(130,548)
Acquisition-related expenses									(1,771)	(786)	(607)
Net income	$ 16,606	$ 14,159	$ 15,894	$ 22,096	$ 12,798	$ 8,681	$ 15,917	$ 15,458	68,755	52,854	52,837
Less: Net income attributable to noncontrolling interests									(10,371)	(8,233)	(7,526)
Net income attributable to common stockholders	$ 14,167	$ 12,070	$ 13,448	$ 18,699	$ 10,893	$ 7,389	$ 13,363	$ 12,976	$ 58,384	$ 44,621	$ 45,311

Future Minimum Lease Receipts76

Future Minimum Lease Receipts (Narrative) (Details)	Dec. 31, 2015land_parcel
Wholly Owned Consolidated Office Properties [Member]
Operating Leased Assets [Line Items]
Number of land parcels	2

Future Minimum Lease Receipts77

Future Minimum Lease Receipts (Schedule Of Future Minimum Base Rentals On Non-Cancelable Office And Ground Operating Leases) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Operating Leases, Future Minimum Payments Receivable [Abstract]
2,016	$ 396,812
2,017	358,267
2,018	295,593
2,019	242,862
2,020	190,154
Thereafter	540,485
Total future minimum base rentals	$ 2,024,173

Future Minimum Lease Payments78

Future Minimum Lease Payments (Narrative) (Details) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 28, 2015lease	Dec. 31, 2015USD ($)ground_lease	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Number of ground leases | ground_lease		2
Ground lease payments expense | $		$ 0.7	$ 2.6	$ 2.2
Number of ground leases with purchase options | lease	1

Future Minimum Lease Payments79

Future Minimum Lease Payments (Future Minimum Ground Lease Payments) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,016	$ 733
2,017	733
2,018	733
2,019	733
2,020	733
Thereafter	48,377
Total future minimum lease payments	52,042
Future ground rent payments per year	$ 733

Commitments, Contingencies an80

Commitments, Contingencies and Guarantees (Details)	12 Months Ended
	Dec. 31, 2015USD ($)office_propertypropertytenant	Dec. 31, 2014USD ($)tenant	Dec. 31, 2013tenant
Other Commitments [Line Items]
Number of tenants accounting for more than 10% of our total rental revenue and tenant recoveries | tenant	0	0	0
Amount accounts are insured by FDIC (up to)	$ 250,000
Number of properties containing asbestos | property	23
Loan principal	$ 3,611,276,000	$ 3,419,667,000
Number of office properties | office_property	62
Office Building [Member] | Westwood Submarket [Member]
Other Commitments [Line Items]
Number of office properties | property	4
Fund X [Member]
Other Commitments [Line Items]
Number of properties containing asbestos | property	4
Loan principal	$ 325,000,000
Maturity date	May 1, 2018
Swap Maturity Date	May 1, 2017
Maximum future payments under the swap agreement	$ 2,600,000

Quarterly Financial Informati81

Quarterly Financial Information (unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information [Abstract]
Total revenue	$ 160,431	$ 160,077	$ 160,457	$ 154,809	$ 151,087	$ 148,141	$ 151,422	$ 148,872	$ 635,774	$ 599,522	$ 591,519
Net income	16,606	14,159	15,894	22,096	12,798	8,681	15,917	15,458	68,755	52,854	52,837
Net income attributable to common stockholders	$ 14,167	$ 12,070	$ 13,448	$ 18,699	$ 10,893	$ 7,389	$ 13,363	$ 12,976	$ 58,384	$ 44,621	$ 45,311
Net income per common share - basic	$ 0.096	$ 0.082	$ 0.092	$ 0.128	$ 0.075	$ 0.051	$ 0.093	$ 0.090	$ 0.398	$ 0.309	$ 0.317
Net income per common share - diluted	$ 0.093	$ 0.080	$ 0.089	$ 0.124	$ 0.073	$ 0.050	$ 0.090	$ 0.088	$ 0.386	$ 0.300	$ 0.309
Weighted average shares of common stock outstanding - basic	146,780	146,331	145,898	145,327	144,823	144,361	143,717	143,140	146,089	144,013	142,556
Weighted average shares of common stock and common stock equivalents outstanding - diluted	151,531	150,740	150,304	149,802	148,943	148,641	147,945	146,861	150,604	148,121	145,844

Subsequent Events (Details)

Subsequent Events (Details) $ in Thousands, ft² in Millions	3 Months Ended
	Mar. 31, 2016USD ($)ft²property$ / ft²	Jan. 21, 2016USD ($)	Dec. 31, 2015USD ($)office_propertyproperty	Dec. 31, 2014USD ($)
Subsequent Event [Line Items]
Number of office properties | office_property			62
Long-term Debt			$ 3,611,276	$ 3,419,667
Subsequent Event [Member] | Corporate Joint Venture [Member]
Subsequent Event [Line Items]
Ownership percentage in joint venture		66.67%
Subsequent Event [Member] | Secured Debt [Member] | Term Loan With Maturity Date 3/1/2017 [Member] | Corporate Joint Venture [Member]
Subsequent Event [Line Items]
Long-term Debt		$ 15,700
Westwood Submarket [Member] | Office Building [Member]
Subsequent Event [Line Items]
Number of office properties | property			4
Westwood Submarket [Member] | Office Building [Member] | Scenario, Forecast [Member] | Corporate Joint Venture [Member]
Subsequent Event [Line Items]
Sale of Class A office property, amount	$ 1,340,000
Proceeds from sale of office properties (in dollars per square foot) | $ / ft²	779
Number of office properties | property	4
Area of real estate property (in square feet) | ft²	1.7

Schedule III - Consolidated R83

Schedule III - Consolidated Real Estate and Accumulated Depreciation and Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015
Encumbrances				$ 3,634,163
Initial Cost of Land				646,718
Initial Cost of Buildings & Improvements				3,053,142
Costs Capitalized Subsequent to Acquisition, Improvements				3,624,469
Gross Carrying Amount of Land				924,965
Gross Carrying Amount of Buildings & Improvements				6,399,364
Gross Carrying Amount of Land and Buildings & Improvements	$ 7,157,603	$ 7,012,733	$ 6,786,537	7,324,329
Accumulated Depreciation & Amortization	(1,531,157)	(1,495,819)	(1,304,468)	(1,703,375)
Aggregate cost of total real estate for federal income tax purposes				4,410,000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, beginning of period	7,157,603	7,012,733	6,786,537
Property acquisitions	120,696	223,186	159,164
Improvements	75,367	84,578	66,483
Developments	3,778	4,280	549
Write-offs	(33,115)	(167,174)	0
Balance, end of period	7,324,329	7,157,603	7,012,733
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, beginning of period	(1,531,157)	(1,495,819)	(1,304,468)
Depreciation and amortization	(205,333)	(202,512)	(191,351)
Write-offs	33,115	167,174	0
Balance, end of period	(1,703,375)	$ (1,531,157)	$ (1,495,819)
Operating Property [Member]
Encumbrances				3,634,163
Initial Cost of Land				628,354
Initial Cost of Buildings & Improvements				3,053,142
Costs Capitalized Subsequent to Acquisition, Improvements				3,615,933
Gross Carrying Amount of Land				906,601
Gross Carrying Amount of Buildings & Improvements				6,390,828
Gross Carrying Amount of Land and Buildings & Improvements	7,297,429			7,297,429
Accumulated Depreciation & Amortization	(1,703,375)			(1,703,375)
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	7,297,429
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(1,703,375)
Operating Property [Member] | 100 Wilshire [Member]
Encumbrances				139,199
Initial Cost of Land				12,769
Initial Cost of Buildings & Improvements				78,447
Costs Capitalized Subsequent to Acquisition, Improvements				139,015
Gross Carrying Amount of Land				27,108
Gross Carrying Amount of Buildings & Improvements				203,123
Gross Carrying Amount of Land and Buildings & Improvements	230,231			230,231
Accumulated Depreciation & Amortization	$ (55,453)			(55,453)
Year Built	Jan. 1, 1968
Year Renovated	Jan. 1, 2002
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 230,231
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(55,453)
Operating Property [Member] | 11777 San Vicente [Member]
Encumbrances				25,931
Initial Cost of Land				5,032
Initial Cost of Buildings & Improvements				15,768
Costs Capitalized Subsequent to Acquisition, Improvements				29,652
Gross Carrying Amount of Land				6,714
Gross Carrying Amount of Buildings & Improvements				43,738
Gross Carrying Amount of Land and Buildings & Improvements	50,452			50,452
Accumulated Depreciation & Amortization	$ (11,672)			(11,672)
Year Built	Jan. 1, 1974
Year Renovated	Jan. 1, 1998
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 50,452
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,672)
Operating Property [Member] | 12400 Wilshire [Member]
Encumbrances				61,436
Initial Cost of Land				5,013
Initial Cost of Buildings & Improvements				34,283
Costs Capitalized Subsequent to Acquisition, Improvements				76,037
Gross Carrying Amount of Land				8,828
Gross Carrying Amount of Buildings & Improvements				106,505
Gross Carrying Amount of Land and Buildings & Improvements	115,333			115,333
Accumulated Depreciation & Amortization	$ (29,203)			(29,203)
Year Built	Jan. 1, 1985
Year Acquired	Jan. 1, 1996
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 115,333
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(29,203)
Operating Property [Member] | 16501 Ventura [Member]
Encumbrances				39,803
Initial Cost of Land				6,759
Initial Cost of Buildings & Improvements				53,112
Costs Capitalized Subsequent to Acquisition, Improvements				8,357
Gross Carrying Amount of Land				6,759
Gross Carrying Amount of Buildings & Improvements				61,469
Gross Carrying Amount of Land and Buildings & Improvements	68,228			68,228
Accumulated Depreciation & Amortization	$ (5,826)			(5,826)
Year Built	Jan. 1, 1986
Year Renovated	Jan. 1, 2012
Year Acquired	Jan. 1, 2013
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 68,228
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(5,826)
Operating Property [Member] | 1901 Avenue Of Stars [Member]
Encumbrances				152,733
Initial Cost of Land				18,514
Initial Cost of Buildings & Improvements				131,752
Costs Capitalized Subsequent to Acquisition, Improvements				111,569
Gross Carrying Amount of Land				26,163
Gross Carrying Amount of Buildings & Improvements				235,672
Gross Carrying Amount of Land and Buildings & Improvements	261,835			261,835
Accumulated Depreciation & Amortization	$ (65,741)			(65,741)
Year Built	Jan. 1, 1968
Year Renovated	Jan. 1, 2001
Year Acquired	Jan. 1, 2001
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 261,835
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(65,741)
Operating Property [Member] | 401 Wilshire [Member]
Encumbrances				79,787
Initial Cost of Land				9,989
Initial Cost of Buildings & Improvements				29,187
Costs Capitalized Subsequent to Acquisition, Improvements				115,820
Gross Carrying Amount of Land				21,787
Gross Carrying Amount of Buildings & Improvements				133,209
Gross Carrying Amount of Land and Buildings & Improvements	154,996			154,996
Accumulated Depreciation & Amortization	$ (37,307)			(37,307)
Year Built	Jan. 1, 1981
Year Renovated	Jan. 1, 2000
Year Acquired	Jan. 1, 1996
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 154,996
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(37,307)
Operating Property [Member] | 8484 Wilshire [Member]
Encumbrances				0
Initial Cost of Land				8,846
Initial Cost of Buildings & Improvements				77,780
Costs Capitalized Subsequent to Acquisition, Improvements				14,982
Gross Carrying Amount of Land				8,846
Gross Carrying Amount of Buildings & Improvements				92,763
Gross Carrying Amount of Land and Buildings & Improvements	101,609			101,609
Accumulated Depreciation & Amortization	$ (7,683)			(7,683)
Year Built	Jan. 1, 1972
Year Renovated	Jan. 1, 2013
Year Acquired	Jan. 1, 2013
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 101,609
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(7,683)
Operating Property [Member] | 9601 Wilshire [Member]
Encumbrances				145,845
Initial Cost of Land				16,597
Initial Cost of Buildings & Improvements				54,774
Costs Capitalized Subsequent to Acquisition, Improvements				110,173
Gross Carrying Amount of Land				17,658
Gross Carrying Amount of Buildings & Improvements				163,886
Gross Carrying Amount of Land and Buildings & Improvements	181,544			181,544
Accumulated Depreciation & Amortization	$ (46,309)			(46,309)
Year Built	Jan. 1, 1962
Year Renovated	Jan. 1, 2004
Year Acquired	Jan. 1, 2001
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 181,544
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(46,309)
Operating Property [Member] | Beverly Hills Medical Center [Member]
Encumbrances				31,469
Initial Cost of Land				4,955
Initial Cost of Buildings & Improvements				27,766
Costs Capitalized Subsequent to Acquisition, Improvements				28,176
Gross Carrying Amount of Land				6,435
Gross Carrying Amount of Buildings & Improvements				54,462
Gross Carrying Amount of Land and Buildings & Improvements	60,897			60,897
Accumulated Depreciation & Amortization	$ (15,469)			(15,469)
Year Built	Jan. 1, 1964
Year Renovated	Jan. 1, 2004
Year Acquired	Jan. 1, 2004
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 60,897
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(15,469)
Operating Property [Member] | Bishop Place [Member]
Encumbrances				73,813
Initial Cost of Land				8,317
Initial Cost of Buildings & Improvements				105,651
Costs Capitalized Subsequent to Acquisition, Improvements				60,435
Gross Carrying Amount of Land				8,833
Gross Carrying Amount of Buildings & Improvements				165,570
Gross Carrying Amount of Land and Buildings & Improvements	174,403			174,403
Accumulated Depreciation & Amortization	$ (48,947)			(48,947)
Year Built	Jan. 1, 1992
Year Acquired	Jan. 1, 2004
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 174,403
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(48,947)
Operating Property [Member] | Bishop Square [Member]
Encumbrances				180,000
Initial Cost of Land				16,273
Initial Cost of Buildings & Improvements				213,793
Costs Capitalized Subsequent to Acquisition, Improvements				25,303
Gross Carrying Amount of Land				16,273
Gross Carrying Amount of Buildings & Improvements				239,096
Gross Carrying Amount of Land and Buildings & Improvements	255,369			255,369
Accumulated Depreciation & Amortization	$ (47,217)			(47,217)
Year Built	Jan. 1, 1972
Year Renovated	Jan. 1, 1983
Year Acquired	Jan. 1, 2010
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 255,369
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(47,217)
Operating Property [Member] | Brentwood Court [Member]
Encumbrances				6,318
Initial Cost of Land				2,564
Initial Cost of Buildings & Improvements				8,872
Costs Capitalized Subsequent to Acquisition, Improvements				722
Gross Carrying Amount of Land				2,563
Gross Carrying Amount of Buildings & Improvements				9,595
Gross Carrying Amount of Land and Buildings & Improvements	12,158			12,158
Accumulated Depreciation & Amortization	$ (2,714)			(2,714)
Year Built	Jan. 1, 1984
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 12,158
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(2,714)
Operating Property [Member] | Brentwood Executive Plaza [Member]
Encumbrances				25,461
Initial Cost of Land				3,255
Initial Cost of Buildings & Improvements				9,654
Costs Capitalized Subsequent to Acquisition, Improvements				33,518
Gross Carrying Amount of Land				5,921
Gross Carrying Amount of Buildings & Improvements				40,506
Gross Carrying Amount of Land and Buildings & Improvements	46,427			46,427
Accumulated Depreciation & Amortization	$ (11,863)			(11,863)
Year Built	Jan. 1, 1983
Year Renovated	Jan. 1, 1996
Year Acquired	Jan. 1, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 46,427
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,863)
Operating Property [Member] | Brentwood Medical Plaza [Member]
Encumbrances				25,805
Initial Cost of Land				5,934
Initial Cost of Buildings & Improvements				27,836
Costs Capitalized Subsequent to Acquisition, Improvements				2,296
Gross Carrying Amount of Land				5,933
Gross Carrying Amount of Buildings & Improvements				30,133
Gross Carrying Amount of Land and Buildings & Improvements	36,066			36,066
Accumulated Depreciation & Amortization	$ (8,958)			(8,958)
Year Built	Jan. 1, 1975
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 36,066
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(8,958)
Operating Property [Member] | Brentwood San Vicente Medical [Member]
Encumbrances				13,297
Initial Cost of Land				5,557
Initial Cost of Buildings & Improvements				16,457
Costs Capitalized Subsequent to Acquisition, Improvements				1,142
Gross Carrying Amount of Land				5,557
Gross Carrying Amount of Buildings & Improvements				17,599
Gross Carrying Amount of Land and Buildings & Improvements	23,156			23,156
Accumulated Depreciation & Amortization	$ (4,918)			(4,918)
Year Built	Jan. 1, 1957
Year Renovated	Jan. 1, 1985
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 23,156
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(4,918)
Operating Property [Member] | Brentwood Saltair [Member]
Encumbrances				13,065
Initial Cost of Land				4,468
Initial Cost of Buildings & Improvements				11,615
Costs Capitalized Subsequent to Acquisition, Improvements				12,195
Gross Carrying Amount of Land				4,775
Gross Carrying Amount of Buildings & Improvements				23,503
Gross Carrying Amount of Land and Buildings & Improvements	28,278			28,278
Accumulated Depreciation & Amortization	$ (6,916)			(6,916)
Year Built	Jan. 1, 1986
Year Acquired	Jan. 1, 2000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 28,278
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(6,916)
Operating Property [Member] | Bundy Olympic [Member]
Encumbrances				24,056
Initial Cost of Land				4,201
Initial Cost of Buildings & Improvements				11,860
Costs Capitalized Subsequent to Acquisition, Improvements				30,036
Gross Carrying Amount of Land				6,030
Gross Carrying Amount of Buildings & Improvements				40,067
Gross Carrying Amount of Land and Buildings & Improvements	46,097			46,097
Accumulated Depreciation & Amortization	$ (11,127)			(11,127)
Year Built	Jan. 1, 1991
Year Renovated	Jan. 1, 1998
Year Acquired	Jan. 1, 1994
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 46,097
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,127)
Operating Property [Member] | Camden Medical Arts [Member]
Encumbrances				38,021
Initial Cost of Land				3,102
Initial Cost of Buildings & Improvements				12,221
Costs Capitalized Subsequent to Acquisition, Improvements				27,931
Gross Carrying Amount of Land				5,298
Gross Carrying Amount of Buildings & Improvements				37,956
Gross Carrying Amount of Land and Buildings & Improvements	43,254			43,254
Accumulated Depreciation & Amortization	$ (10,446)			(10,446)
Year Built	Jan. 1, 1972
Year Renovated	Jan. 1, 1992
Year Acquired	Jan. 1, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 43,254
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(10,446)
Operating Property [Member] | Carthay Campus [Member]
Encumbrances				48,007
Initial Cost of Land				6,595
Initial Cost of Buildings & Improvements				70,454
Costs Capitalized Subsequent to Acquisition, Improvements				2,252
Gross Carrying Amount of Land				6,594
Gross Carrying Amount of Buildings & Improvements				72,707
Gross Carrying Amount of Land and Buildings & Improvements	79,301			79,301
Accumulated Depreciation & Amortization	$ (3,455)			(3,455)
Year Built	Jan. 1, 1965
Year Renovated	Jan. 1, 2008
Year Acquired	Jan. 1, 2014
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 79,301
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(3,455)
Operating Property [Member] | Century Park Plaza [Member]
Encumbrances				77,984
Initial Cost of Land				10,275
Initial Cost of Buildings & Improvements				70,761
Costs Capitalized Subsequent to Acquisition, Improvements				107,147
Gross Carrying Amount of Land				16,153
Gross Carrying Amount of Buildings & Improvements				172,030
Gross Carrying Amount of Land and Buildings & Improvements	188,183			188,183
Accumulated Depreciation & Amortization	$ (47,291)			(47,291)
Year Built	Jan. 1, 1972
Year Renovated	Jan. 1, 1987
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 188,183
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(47,291)
Operating Property [Member] | Century Park West [Member]
Encumbrances				0
Initial Cost of Land				3,717
Initial Cost of Buildings & Improvements				29,099
Costs Capitalized Subsequent to Acquisition, Improvements				528
Gross Carrying Amount of Land				3,667
Gross Carrying Amount of Buildings & Improvements				29,677
Gross Carrying Amount of Land and Buildings & Improvements	33,344			33,344
Accumulated Depreciation & Amortization	$ (8,436)			(8,436)
Year Built	Jan. 1, 1971
Year Acquired	Jan. 1, 2007
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 33,344
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(8,436)
Operating Property [Member] | Columbus Center [Member]
Encumbrances				10,559
Initial Cost of Land				2,096
Initial Cost of Buildings & Improvements				10,396
Costs Capitalized Subsequent to Acquisition, Improvements				9,648
Gross Carrying Amount of Land				2,333
Gross Carrying Amount of Buildings & Improvements				19,807
Gross Carrying Amount of Land and Buildings & Improvements	22,140			22,140
Accumulated Depreciation & Amortization	$ (5,702)			(5,702)
Year Built	Jan. 1, 1987
Year Acquired	Jan. 1, 2001
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 22,140
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(5,702)
Operating Property [Member] | Coral Plaza [Member]
Encumbrances				25,831
Initial Cost of Land				4,028
Initial Cost of Buildings & Improvements				15,019
Costs Capitalized Subsequent to Acquisition, Improvements				19,069
Gross Carrying Amount of Land				5,366
Gross Carrying Amount of Buildings & Improvements				32,750
Gross Carrying Amount of Land and Buildings & Improvements	38,116			38,116
Accumulated Depreciation & Amortization	$ (9,516)			(9,516)
Year Built	Jan. 1, 1981
Year Acquired	Jan. 1, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 38,116
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(9,516)
Operating Property [Member] | Cornerstone Plaza [Member]
Encumbrances				0
Initial Cost of Land				8,245
Initial Cost of Buildings & Improvements				80,633
Costs Capitalized Subsequent to Acquisition, Improvements				5,380
Gross Carrying Amount of Land				8,263
Gross Carrying Amount of Buildings & Improvements				85,995
Gross Carrying Amount of Land and Buildings & Improvements	94,258			94,258
Accumulated Depreciation & Amortization	$ (21,316)			(21,316)
Year Built	Jan. 1, 1986
Year Acquired	Jan. 1, 2007
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 94,258
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(21,316)
Operating Property [Member] | Encino Gateway [Member]
Encumbrances				51,463
Initial Cost of Land				8,475
Initial Cost of Buildings & Improvements				48,525
Costs Capitalized Subsequent to Acquisition, Improvements				53,166
Gross Carrying Amount of Land				15,653
Gross Carrying Amount of Buildings & Improvements				94,513
Gross Carrying Amount of Land and Buildings & Improvements	110,166			110,166
Accumulated Depreciation & Amortization	$ (28,212)			(28,212)
Year Built	Jan. 1, 1974
Year Renovated	Jan. 1, 1998
Year Acquired	Jan. 1, 2000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 110,166
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(28,212)
Operating Property [Member] | Encino Plaza [Member]
Encumbrances				30,011
Initial Cost of Land				5,293
Initial Cost of Buildings & Improvements				23,125
Costs Capitalized Subsequent to Acquisition, Improvements				47,307
Gross Carrying Amount of Land				6,165
Gross Carrying Amount of Buildings & Improvements				69,560
Gross Carrying Amount of Land and Buildings & Improvements	75,725			75,725
Accumulated Depreciation & Amortization	$ (20,173)			(20,173)
Year Built	Jan. 1, 1971
Year Renovated	Jan. 1, 1992
Year Acquired	Jan. 1, 2000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 75,725
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(20,173)
Operating Property [Member] | Encino Terrace [Member]
Encumbrances				91,133
Initial Cost of Land				12,535
Initial Cost of Buildings & Improvements				59,554
Costs Capitalized Subsequent to Acquisition, Improvements				94,210
Gross Carrying Amount of Land				15,533
Gross Carrying Amount of Buildings & Improvements				150,766
Gross Carrying Amount of Land and Buildings & Improvements	166,299			166,299
Accumulated Depreciation & Amortization	$ (44,433)			(44,433)
Year Built	Jan. 1, 1986
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 166,299
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(44,433)
Operating Property [Member] | Executive Tower [Member]
Encumbrances				0
Initial Cost of Land				6,660
Initial Cost of Buildings & Improvements				32,045
Costs Capitalized Subsequent to Acquisition, Improvements				60,942
Gross Carrying Amount of Land				9,471
Gross Carrying Amount of Buildings & Improvements				90,176
Gross Carrying Amount of Land and Buildings & Improvements	99,647			99,647
Accumulated Depreciation & Amortization	$ (26,110)			(26,110)
Year Built	Jan. 1, 1989
Year Acquired	Jan. 1, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 99,647
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(26,110)
Operating Property [Member] | First Financial Plaza [Member]
Encumbrances				54,085
Initial Cost of Land				12,092
Initial Cost of Buildings & Improvements				81,104
Costs Capitalized Subsequent to Acquisition, Improvements				877
Gross Carrying Amount of Land				12,092
Gross Carrying Amount of Buildings & Improvements				81,981
Gross Carrying Amount of Land and Buildings & Improvements	94,073			94,073
Accumulated Depreciation & Amortization	$ (2,304)			(2,304)
Year Built	Jan. 1, 1986
Year Acquired	Jan. 1, 2015
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 94,073
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(2,304)
Operating Property [Member] | Gateway Los Angeles [Member]
Encumbrances				28,429
Initial Cost of Land				2,376
Initial Cost of Buildings & Improvements				15,302
Costs Capitalized Subsequent to Acquisition, Improvements				48,669
Gross Carrying Amount of Land				5,119
Gross Carrying Amount of Buildings & Improvements				61,228
Gross Carrying Amount of Land and Buildings & Improvements	66,347			66,347
Accumulated Depreciation & Amortization	$ (17,204)			(17,204)
Year Built	Jan. 1, 1987
Year Acquired	Jan. 1, 1994
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 66,347
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(17,204)
Operating Property [Member] | Harbor Court [Member]
Encumbrances				30,992
Initial Cost of Land				51
Initial Cost of Buildings & Improvements				41,001
Costs Capitalized Subsequent to Acquisition, Improvements				49,029
Gross Carrying Amount of Land				12,060
Gross Carrying Amount of Buildings & Improvements				78,021
Gross Carrying Amount of Land and Buildings & Improvements	90,081			90,081
Accumulated Depreciation & Amortization	$ (19,859)			(19,859)
Year Built	Jan. 1, 1994
Year Acquired	Jan. 1, 2004
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 90,081
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(19,859)
Operating Property [Member] | Honolulu Club [Member]
Encumbrances				15,740
Initial Cost of Land				1,863
Initial Cost of Buildings & Improvements				16,766
Costs Capitalized Subsequent to Acquisition, Improvements				6,631
Gross Carrying Amount of Land				1,863
Gross Carrying Amount of Buildings & Improvements				23,397
Gross Carrying Amount of Land and Buildings & Improvements	25,260			25,260
Accumulated Depreciation & Amortization	$ (6,406)			(6,406)
Year Built	Jan. 1, 1980
Year Acquired	Jan. 1, 2008
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 25,260
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(6,406)
Operating Property [Member] | Landmark Two [Member]
Encumbrances				118,684
Initial Cost of Land				6,086
Initial Cost of Buildings & Improvements				109,259
Costs Capitalized Subsequent to Acquisition, Improvements				82,081
Gross Carrying Amount of Land				13,070
Gross Carrying Amount of Buildings & Improvements				184,356
Gross Carrying Amount of Land and Buildings & Improvements	197,426			197,426
Accumulated Depreciation & Amortization	$ (62,616)			(62,616)
Year Built	Jan. 1, 1989
Year Acquired	Jan. 1, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 197,426
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(62,616)
Operating Property [Member] | Lincoln Wilshire [Member]
Encumbrances				38,021
Initial Cost of Land				3,833
Initial Cost of Buildings & Improvements				12,484
Costs Capitalized Subsequent to Acquisition, Improvements				23,382
Gross Carrying Amount of Land				7,475
Gross Carrying Amount of Buildings & Improvements				32,224
Gross Carrying Amount of Land and Buildings & Improvements	39,699			39,699
Accumulated Depreciation & Amortization	$ (8,623)			(8,623)
Year Built	Jan. 1, 1996
Year Acquired	Jan. 1, 2000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 39,699
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(8,623)
Operating Property [Member] | Mb Plaza [Member]
Encumbrances				25,769
Initial Cost of Land				4,533
Initial Cost of Buildings & Improvements				22,024
Costs Capitalized Subsequent to Acquisition, Improvements				30,973
Gross Carrying Amount of Land				7,503
Gross Carrying Amount of Buildings & Improvements				50,027
Gross Carrying Amount of Land and Buildings & Improvements	57,530			57,530
Accumulated Depreciation & Amortization	$ (15,846)			(15,846)
Year Built	Jan. 1, 1971
Year Renovated	Jan. 1, 1996
Year Acquired	Jan. 1, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 57,530
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(15,846)
Operating Property [Member] | Olympic Center [Member]
Encumbrances				25,656
Initial Cost of Land				5,473
Initial Cost of Buildings & Improvements				22,850
Costs Capitalized Subsequent to Acquisition, Improvements				32,645
Gross Carrying Amount of Land				8,247
Gross Carrying Amount of Buildings & Improvements				52,721
Gross Carrying Amount of Land and Buildings & Improvements	60,968			60,968
Accumulated Depreciation & Amortization	$ (15,584)			(15,584)
Year Built	Jan. 1, 1985
Year Renovated	Jan. 1, 1996
Year Acquired	Jan. 1, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 60,968
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(15,584)
Operating Property [Member] | One Westwood [Member]
Encumbrances				0
Initial Cost of Land				10,350
Initial Cost of Buildings & Improvements				29,784
Costs Capitalized Subsequent to Acquisition, Improvements				59,698
Gross Carrying Amount of Land				9,194
Gross Carrying Amount of Buildings & Improvements				90,638
Gross Carrying Amount of Land and Buildings & Improvements	99,832			99,832
Accumulated Depreciation & Amortization	$ (24,762)			(24,762)
Year Built	Jan. 1, 1987
Year Renovated	Jan. 1, 2004
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 99,832
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(24,762)
Operating Property [Member] | Palisades Promenade [Member]
Encumbrances				35,904
Initial Cost of Land				5,253
Initial Cost of Buildings & Improvements				15,547
Costs Capitalized Subsequent to Acquisition, Improvements				53,637
Gross Carrying Amount of Land				9,664
Gross Carrying Amount of Buildings & Improvements				64,773
Gross Carrying Amount of Land and Buildings & Improvements	74,437			74,437
Accumulated Depreciation & Amortization	$ (17,498)			(17,498)
Year Built	Jan. 1, 1990
Year Acquired	Jan. 1, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 74,437
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(17,498)
Operating Property [Member] | Saltair San Vicente [Member]
Encumbrances				21,269
Initial Cost of Land				5,075
Initial Cost of Buildings & Improvements				6,946
Costs Capitalized Subsequent to Acquisition, Improvements				16,995
Gross Carrying Amount of Land				7,557
Gross Carrying Amount of Buildings & Improvements				21,459
Gross Carrying Amount of Land and Buildings & Improvements	29,016			29,016
Accumulated Depreciation & Amortization	$ (6,289)			(6,289)
Year Built	Jan. 1, 1964
Year Renovated	Jan. 1, 1992
Year Acquired	Jan. 1, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 29,016
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(6,289)
Operating Property [Member] | San Vicente Plaza [Member]
Encumbrances				9,430
Initial Cost of Land				7,055
Initial Cost of Buildings & Improvements				12,035
Costs Capitalized Subsequent to Acquisition, Improvements				481
Gross Carrying Amount of Land				7,055
Gross Carrying Amount of Buildings & Improvements				12,516
Gross Carrying Amount of Land and Buildings & Improvements	19,571			19,571
Accumulated Depreciation & Amortization	$ (4,050)			(4,050)
Year Built	Jan. 1, 1985
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 19,571
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(4,050)
Operating Property [Member] | Santa Monica Square [Member]
Encumbrances				0
Initial Cost of Land				5,366
Initial Cost of Buildings & Improvements				18,025
Costs Capitalized Subsequent to Acquisition, Improvements				20,271
Gross Carrying Amount of Land				6,863
Gross Carrying Amount of Buildings & Improvements				36,799
Gross Carrying Amount of Land and Buildings & Improvements	43,662			43,662
Accumulated Depreciation & Amortization	$ (10,856)			(10,856)
Year Built	Jan. 1, 1983
Year Renovated	Jan. 1, 2004
Year Acquired	Jan. 1, 2001
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 43,662
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(10,856)
Operating Property [Member] | Second Street Plaza [Member]
Encumbrances				35,802
Initial Cost of Land				4,377
Initial Cost of Buildings & Improvements				15,277
Costs Capitalized Subsequent to Acquisition, Improvements				35,589
Gross Carrying Amount of Land				7,421
Gross Carrying Amount of Buildings & Improvements				47,822
Gross Carrying Amount of Land and Buildings & Improvements	55,243			55,243
Accumulated Depreciation & Amortization	$ (13,800)			(13,800)
Year Built	Jan. 1, 1991
Year Acquired	Jan. 1, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 55,243
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(13,800)
Operating Property [Member] | Sherman Oaks Galleria [Member]
Encumbrances				264,297
Initial Cost of Land				33,213
Initial Cost of Buildings & Improvements				17,820
Costs Capitalized Subsequent to Acquisition, Improvements				409,918
Gross Carrying Amount of Land				48,328
Gross Carrying Amount of Buildings & Improvements				412,623
Gross Carrying Amount of Land and Buildings & Improvements	460,951			460,951
Accumulated Depreciation & Amortization	$ (123,734)			(123,734)
Year Built	Jan. 1, 1981
Year Renovated	Jan. 1, 2002
Year Acquired	Jan. 1, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 460,951
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(123,734)
Operating Property [Member] | Studio Plaza [Member]
Encumbrances				115,591
Initial Cost of Land				9,347
Initial Cost of Buildings & Improvements				73,358
Costs Capitalized Subsequent to Acquisition, Improvements				131,054
Gross Carrying Amount of Land				15,015
Gross Carrying Amount of Buildings & Improvements				198,744
Gross Carrying Amount of Land and Buildings & Improvements	213,759			213,759
Accumulated Depreciation & Amortization	$ (61,295)			(61,295)
Year Built	Jan. 1, 1988
Year Renovated	Jan. 1, 2004
Year Acquired	Jan. 1, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 213,759
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(61,295)
Operating Property [Member] | Trillium [Member]
Encumbrances				0
Initial Cost of Land				20,688
Initial Cost of Buildings & Improvements				143,263
Costs Capitalized Subsequent to Acquisition, Improvements				83,941
Gross Carrying Amount of Land				21,989
Gross Carrying Amount of Buildings & Improvements				225,903
Gross Carrying Amount of Land and Buildings & Improvements	247,892			247,892
Accumulated Depreciation & Amortization	$ (65,067)			(65,067)
Year Built	Jan. 1, 1988
Year Acquired	Jan. 1, 2005
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 247,892
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(65,067)
Operating Property [Member] | Tower At Sherman Oaks [Member]
Encumbrances				20,000
Initial Cost of Land				4,712
Initial Cost of Buildings & Improvements				15,747
Costs Capitalized Subsequent to Acquisition, Improvements				37,861
Gross Carrying Amount of Land				8,685
Gross Carrying Amount of Buildings & Improvements				49,635
Gross Carrying Amount of Land and Buildings & Improvements	58,320			58,320
Accumulated Depreciation & Amortization	$ (15,377)			(15,377)
Year Built	Jan. 1, 1967
Year Renovated	Jan. 1, 1991
Year Acquired	Jan. 1, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 58,320
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(15,377)
Operating Property [Member] | Valley Executive Tower [Member]
Encumbrances				78,943
Initial Cost of Land				8,446
Initial Cost of Buildings & Improvements				67,672
Costs Capitalized Subsequent to Acquisition, Improvements				100,195
Gross Carrying Amount of Land				11,737
Gross Carrying Amount of Buildings & Improvements				164,576
Gross Carrying Amount of Land and Buildings & Improvements	176,313			176,313
Accumulated Depreciation & Amortization	$ (47,454)			(47,454)
Year Built	Jan. 1, 1984
Year Acquired	Jan. 1, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 176,313
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(47,454)
Operating Property [Member] | Valley Office Plaza [Member]
Encumbrances				41,271
Initial Cost of Land				5,731
Initial Cost of Buildings & Improvements				24,329
Costs Capitalized Subsequent to Acquisition, Improvements				47,504
Gross Carrying Amount of Land				8,957
Gross Carrying Amount of Buildings & Improvements				68,607
Gross Carrying Amount of Land and Buildings & Improvements	77,564			77,564
Accumulated Depreciation & Amortization	$ (21,048)			(21,048)
Year Built	Jan. 1, 1966
Year Renovated	Jan. 1, 2002
Year Acquired	Jan. 1, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 77,564
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(21,048)
Operating Property [Member] | Verona [Member]
Encumbrances				14,262
Initial Cost of Land				2,574
Initial Cost of Buildings & Improvements				7,111
Costs Capitalized Subsequent to Acquisition, Improvements				14,672
Gross Carrying Amount of Land				5,111
Gross Carrying Amount of Buildings & Improvements				19,246
Gross Carrying Amount of Land and Buildings & Improvements	24,357			24,357
Accumulated Depreciation & Amortization	$ (5,482)			(5,482)
Year Built	Jan. 1, 1991
Year Acquired	Jan. 1, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 24,357
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(5,482)
Operating Property [Member] | Village On Canon [Member]
Encumbrances				58,337
Initial Cost of Land				5,933
Initial Cost of Buildings & Improvements				11,389
Costs Capitalized Subsequent to Acquisition, Improvements				49,122
Gross Carrying Amount of Land				13,303
Gross Carrying Amount of Buildings & Improvements				53,141
Gross Carrying Amount of Land and Buildings & Improvements	66,444			66,444
Accumulated Depreciation & Amortization	$ (14,486)			(14,486)
Year Built	Jan. 1, 1989
Year Renovated	Jan. 1, 1995
Year Acquired	Jan. 1, 1994
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 66,444
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(14,486)
Operating Property [Member] | Warner Center Towers [Member]
Encumbrances				285,000
Initial Cost of Land				43,110
Initial Cost of Buildings & Improvements				292,147
Costs Capitalized Subsequent to Acquisition, Improvements				400,021
Gross Carrying Amount of Land				59,418
Gross Carrying Amount of Buildings & Improvements				675,860
Gross Carrying Amount of Land and Buildings & Improvements	735,278			735,278
Accumulated Depreciation & Amortization	$ (192,550)			(192,550)
Year Renovated	Jan. 1, 2004
Year Acquired	Jan. 1, 2002
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 735,278
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(192,550)
Operating Property [Member] | Westside Towers [Member]
Encumbrances				107,386
Initial Cost of Land				8,506
Initial Cost of Buildings & Improvements				79,532
Costs Capitalized Subsequent to Acquisition, Improvements				81,586
Gross Carrying Amount of Land				14,568
Gross Carrying Amount of Buildings & Improvements				155,056
Gross Carrying Amount of Land and Buildings & Improvements	169,624			169,624
Accumulated Depreciation & Amortization	$ (42,921)			(42,921)
Year Built	Jan. 1, 1985
Year Acquired	Jan. 1, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 169,624
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(42,921)
Operating Property [Member] | Westwood Place [Member]
Encumbrances				47,788
Initial Cost of Land				8,542
Initial Cost of Buildings & Improvements				44,419
Costs Capitalized Subsequent to Acquisition, Improvements				51,742
Gross Carrying Amount of Land				11,448
Gross Carrying Amount of Buildings & Improvements				93,255
Gross Carrying Amount of Land and Buildings & Improvements	104,703			104,703
Accumulated Depreciation & Amortization	$ (25,998)			(25,998)
Year Built	Jan. 1, 1987
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 104,703
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(25,998)
Operating Property [Member] | 555 Barrington [Member]
Encumbrances				43,440
Initial Cost of Land				6,461
Initial Cost of Buildings & Improvements				27,639
Costs Capitalized Subsequent to Acquisition, Improvements				40,513
Gross Carrying Amount of Land				14,903
Gross Carrying Amount of Buildings & Improvements				59,710
Gross Carrying Amount of Land and Buildings & Improvements	74,613			74,613
Accumulated Depreciation & Amortization	$ (16,178)			(16,178)
Year Built	Jan. 1, 1989
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 74,613
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(16,178)
Operating Property [Member] | Barrington Plaza [Member]
Encumbrances				153,630
Initial Cost of Land				28,568
Initial Cost of Buildings & Improvements				81,485
Costs Capitalized Subsequent to Acquisition, Improvements				152,861
Gross Carrying Amount of Land				58,208
Gross Carrying Amount of Buildings & Improvements				204,706
Gross Carrying Amount of Land and Buildings & Improvements	262,914			262,914
Accumulated Depreciation & Amortization	$ (54,394)			(54,394)
Year Built	Jan. 1, 1963
Year Renovated	Jan. 1, 1998
Year Acquired	Jan. 1, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 262,914
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(54,394)
Operating Property [Member] | Barrington Kiowa [Member]
Encumbrances				11,345
Initial Cost of Land				5,720
Initial Cost of Buildings & Improvements				10,052
Costs Capitalized Subsequent to Acquisition, Improvements				513
Gross Carrying Amount of Land				5,720
Gross Carrying Amount of Buildings & Improvements				10,565
Gross Carrying Amount of Land and Buildings & Improvements	16,285			16,285
Accumulated Depreciation & Amortization	$ (2,885)			(2,885)
Year Built	Jan. 1, 1974
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 16,285
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(2,885)
Operating Property [Member] | Barry [Member]
Encumbrances				9,000
Initial Cost of Land				6,426
Initial Cost of Buildings & Improvements				8,179
Costs Capitalized Subsequent to Acquisition, Improvements				493
Gross Carrying Amount of Land				6,426
Gross Carrying Amount of Buildings & Improvements				8,672
Gross Carrying Amount of Land and Buildings & Improvements	15,098			15,098
Accumulated Depreciation & Amortization	$ (2,492)			(2,492)
Year Built	Jan. 1, 1973
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 15,098
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(2,492)
Operating Property [Member] | Kiowa [Member]
Encumbrances				4,535
Initial Cost of Land				2,605
Initial Cost of Buildings & Improvements				3,263
Costs Capitalized Subsequent to Acquisition, Improvements				260
Gross Carrying Amount of Land				2,605
Gross Carrying Amount of Buildings & Improvements				3,523
Gross Carrying Amount of Land and Buildings & Improvements	6,128			6,128
Accumulated Depreciation & Amortization	$ (1,009)			(1,009)
Year Built	Jan. 1, 1972
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 6,128
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(1,009)
Operating Property [Member] | Moanalua Hillside [Member]
Encumbrances				145,000
Initial Cost of Land				19,426
Initial Cost of Buildings & Improvements				85,895
Costs Capitalized Subsequent to Acquisition, Improvements				38,827
Gross Carrying Amount of Land				30,071
Gross Carrying Amount of Buildings & Improvements				114,077
Gross Carrying Amount of Land and Buildings & Improvements	144,148			144,148
Accumulated Depreciation & Amortization	$ (30,710)			(30,710)
Year Built	Jan. 1, 1968
Year Renovated	Jan. 1, 2004
Year Acquired	Jan. 1, 2005
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 144,148
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(30,710)
Operating Property [Member] | Pacific Plaza [Member]
Encumbrances				46,400
Initial Cost of Land				10,091
Initial Cost of Buildings & Improvements				16,159
Costs Capitalized Subsequent to Acquisition, Improvements				74,058
Gross Carrying Amount of Land				27,816
Gross Carrying Amount of Buildings & Improvements				72,492
Gross Carrying Amount of Land and Buildings & Improvements	100,308			100,308
Accumulated Depreciation & Amortization	$ (19,035)			(19,035)
Year Built	Jan. 1, 1963
Year Renovated	Jan. 1, 1998
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 100,308
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(19,035)
Operating Property [Member] | The Shores [Member]
Encumbrances				144,610
Initial Cost of Land				20,809
Initial Cost of Buildings & Improvements				74,191
Costs Capitalized Subsequent to Acquisition, Improvements				198,035
Gross Carrying Amount of Land				60,555
Gross Carrying Amount of Buildings & Improvements				232,480
Gross Carrying Amount of Land and Buildings & Improvements	293,035			293,035
Accumulated Depreciation & Amortization	$ (60,515)			(60,515)
Year Renovated	Jan. 1, 2002
Year Acquired	Jan. 1, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 293,035
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(60,515)
Operating Property [Member] | Villas At Royal Kunia [Member]
Encumbrances				90,120
Initial Cost of Land				42,887
Initial Cost of Buildings & Improvements				71,376
Costs Capitalized Subsequent to Acquisition, Improvements				14,473
Gross Carrying Amount of Land				35,164
Gross Carrying Amount of Buildings & Improvements				93,572
Gross Carrying Amount of Land and Buildings & Improvements	128,736			128,736
Accumulated Depreciation & Amortization	$ (28,714)			(28,714)
Year Built	Jan. 1, 1990
Year Renovated	Jan. 1, 1995
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 128,736
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(28,714)
Operating Property [Member] | Waena [Member]
Encumbrances				102,400
Initial Cost of Land				26,864
Initial Cost of Buildings & Improvements				119,273
Costs Capitalized Subsequent to Acquisition, Improvements				317
Gross Carrying Amount of Land				26,864
Gross Carrying Amount of Buildings & Improvements				119,590
Gross Carrying Amount of Land and Buildings & Improvements	146,454			146,454
Accumulated Depreciation & Amortization	$ (3,921)			(3,921)
Year Built	Jan. 1, 1970
Year Acquired	Jan. 1, 2014
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 146,454
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(3,921)
Operating Property [Member] | Owensmouth Warner [Member]
Encumbrances				0
Initial Cost of Land				23,848
Initial Cost of Buildings & Improvements				0
Costs Capitalized Subsequent to Acquisition, Improvements				0
Gross Carrying Amount of Land				23,848
Gross Carrying Amount of Buildings & Improvements				0
Gross Carrying Amount of Land and Buildings & Improvements	23,848			23,848
Accumulated Depreciation & Amortization	$ 0			0
Year Acquired	Jan. 1, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 23,848
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	$ 0
Operating Property [Member] | Minimum [Member] | Warner Center Towers [Member]
Year Built	Jan. 1, 1982
Operating Property [Member] | Minimum [Member] | The Shores [Member]
Year Built	Jan. 1, 1965
Operating Property [Member] | Minimum [Member] | Waena [Member]
Year Renovated	Jan. 1, 2009
Operating Property [Member] | Maximum [Member] | Warner Center Towers [Member]
Year Built	Jan. 1, 1993
Operating Property [Member] | Maximum [Member] | The Shores [Member]
Year Built	Jan. 1, 1967
Operating Property [Member] | Maximum [Member] | Waena [Member]
Year Renovated	Jan. 1, 2014
Property Under Development [Member]
Encumbrances				0
Initial Cost of Land				18,364
Initial Cost of Buildings & Improvements				0
Costs Capitalized Subsequent to Acquisition, Improvements				8,536
Gross Carrying Amount of Land				18,364
Gross Carrying Amount of Buildings & Improvements				8,536
Gross Carrying Amount of Land and Buildings & Improvements	$ 26,900			26,900
Accumulated Depreciation & Amortization	0			0
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	26,900
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	0
Property Under Development [Member] | Landmark II Development [Member] [Member]
Encumbrances				0
Initial Cost of Land				13,070
Initial Cost of Buildings & Improvements				0
Costs Capitalized Subsequent to Acquisition, Improvements				2,154
Gross Carrying Amount of Land				13,070
Gross Carrying Amount of Buildings & Improvements				2,154
Gross Carrying Amount of Land and Buildings & Improvements	15,224			15,224
Accumulated Depreciation & Amortization	0			0
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	15,224
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	0
Property Under Development [Member] | Moanalua Hillside Apartments - Development [Member]
Encumbrances				0
Initial Cost of Land				5,294
Initial Cost of Buildings & Improvements				0
Costs Capitalized Subsequent to Acquisition, Improvements				6,382
Gross Carrying Amount of Land				5,294
Gross Carrying Amount of Buildings & Improvements				6,382
Gross Carrying Amount of Land and Buildings & Improvements	11,676			11,676
Accumulated Depreciation & Amortization	0			$ 0
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	11,676
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	$ 0
Property Under Development [Member] | Minimum [Member] | Landmark II Development [Member] [Member]
Year Built	Jan. 1, 2013
Property Under Development [Member] | Minimum [Member] | Moanalua Hillside Apartments - Development [Member]
Year Built	Jan. 1, 2013
Property Under Development [Member] | Maximum [Member] | Landmark II Development [Member] [Member]
Year Built	Jan. 1, 2015
Property Under Development [Member] | Maximum [Member] | Moanalua Hillside Apartments - Development [Member]
Year Built	Jan. 1, 2015