Pacific Oak Strategic Opportunity REIT (PCOK) 10-K 10 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information Document - USD ($)	12 Months Ended
	Dec. 31, 2016	Mar. 06, 2017	Jun. 30, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	KBS Strategic Opportunity REIT, Inc.
Entity Central Index Key	1,452,936
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		56,738,435
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 0

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Real estate held for investment, net	$ 1,107,031	$ 822,514
Real estate loans receivable, net	0	27,850
Real estate debt securities, net	4,683	0
Total real estate and real estate-related investments, net	1,111,714	850,364
Cash and cash equivalents	40,432	23,058
Restricted cash	24,018	5,807
Investments in unconsolidated joint ventures	75,849	74,437
Rents and other receivables, net	28,264	24,487
Above-market leases, net	633	1,038
Prepaid expenses and other assets	29,206	25,023
Total assets	1,310,116	1,004,214
Liabilities and equity
Notes and bonds payable, net	950,624	547,323
Accounts payable and accrued liabilities	26,624	17,543
Due to affiliate	55	59
Below-market leases, net	6,551	2,735
Other liabilities	18,095	14,190
Redeemable common stock payable	12,617	3,715
Total liabilities	1,014,566	585,565
Commitments and contingencies (Note 15)
Redeemable common stock	0	9,859
Equity
Preferred stock, $.01 par value; 10,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $.01 par value; 1,000,000,000 shares authorized, 56,775,767 and 58,696,115 shares issued and outstanding as of December 31, 2016 and December 31, 2015, respectively	568	587
Additional paid-in capital	455,373	504,303
Cumulative distributions and net losses	(162,289)	(111,527)
Total KBS Strategic Opportunity REIT, Inc. stockholders’ equity	293,652	393,363
Noncontrolling interests	1,898	15,427
Total equity	295,550	408,790
Total liabilities and equity	$ 1,310,116	$ 1,004,214

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	56,775,767	58,696,115
Common stock, shares outstanding (in shares)	56,775,767	58,696,115

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Rental income	$ 106,330	$ 88,543	$ 83,682
Tenant reimbursements	20,762	18,313	16,273
Interest income from real estate loans receivable	3,655	1,968	3,366
Interest income from real estate debt securities	110	0	0
Other operating income	3,387	3,304	2,833
Total revenues	134,244	112,128	106,154
Expenses:
Operating, maintenance, and management	41,906	37,512	35,957
Real estate taxes and insurance	16,887	14,565	14,189
Asset management fees to affiliate	9,628	8,348	7,648
Real estate acquisition fees to affiliate	2,964	0	2,231
Real estate acquisition fees and expenses	543	0	2,177
General and administrative expenses	5,781	3,246	3,418
Foreign currency transaction loss, net	2,997	0	0
Depreciation and amortization	52,051	44,739	47,063
Interest expense	29,249	14,986	15,598
Impairment charges on real estate	0	0	579
Total expenses	162,006	123,396	128,860
Other income (loss):
Other interest income	44	18	22
Other income (loss)	0	5,085	(18)
Equity in loss of unconsolidated joint venture	(1,408)	(368)	(1,101)
Gain on sale of real estate, net	0	13,665	55
Total other (loss) income, net	(1,364)	18,400	(1,042)
Net (loss) income	(29,126)	7,132	(23,748)
Net loss (income) attributable to noncontrolling interests	208	(4,688)	554
Net (loss) income attributable to common stockholders	$ (28,918)	$ 2,444	$ (23,194)
Net income (loss) per common share, basic and diluted (in dollars per share)	$ (0.50)	$ 0.04	$ (0.39)
Weighted-average number of common shares outstanding, basic and diluted (in shares)	58,273,335	59,656,667	59,714,540

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (29,126)	$ 7,132	$ (23,748)
Other comprehensive income:
Unrealized gain on real estate securities	0	0	9
Total other comprehensive income	0	0	9
Total comprehensive (loss) income	(29,126)	7,132	(23,739)
Total comprehensive loss (income) attributable to noncontrolling interests	208	(4,688)	554
Total comprehensive (loss) income attributable to common stockholders	$ (28,918)	$ 2,444	$ (23,185)

CONSOLIDATED STATEMENTS OF EQUI

CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Total Stockholders' Equity	Common Stock	Additional Paid-in Capital	Cumulative Distributions and Net Losses	Accumulated Other Comprehensive Gain (Loss)	Noncontrolling Interests
Balance, shares at Dec. 31, 2013			59,619,000
Balance, value at Dec. 31, 2013	$ 474,686	$ 459,822	$ 596	$ 512,036	$ (52,801)	$ (9)	$ 14,864
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(23,748)	(23,194)			(23,194)		(554)
Other comprehensive income	9	9				9
Issuance of common stock, shares			901,146
Issuance of common stock	9,911	9,911	$ 9	9,902
Transfers from redeemable common stock	7,662	7,662		7,662
Redemptions of common stock, shares			(475,817)
Redemptions of common stock	(5,104)	(5,104)	$ (5)	(5,099)
Distributions declared	(15,696)	(15,696)			(15,696)
Other offering costs	(12)	(12)		(12)
Noncontrolling interests contributions	2,585						2,585
Distributions to noncontrolling interests	(157)						(157)
Balance, shares at Dec. 31, 2014			60,044,329
Balance, value at Dec. 31, 2014	450,136	433,398	$ 600	524,489	(91,691)	0	16,738
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	7,132	2,444			2,444		4,688
Other comprehensive income	0
Issuance of common stock, shares			1,114,532
Issuance of common stock	13,573	13,573	$ 11	13,562
Transfers to redeemable common stock	(3,663)	(3,663)		(3,663)
Redemptions of common stock, shares			(2,462,746)
Redemptions of common stock	(30,100)	(30,100)	$ (24)	(30,076)
Distributions declared	(22,280)	(22,280)			(22,280)
Other offering costs	(9)	(9)		(9)
Noncontrolling interests contributions	1,343						1,343
Distributions to noncontrolling interests	$ (7,342)						(7,342)
Balance, shares at Dec. 31, 2015	58,696,115		58,696,115
Balance, value at Dec. 31, 2015	$ 408,790	393,363	$ 587	504,303	(111,527)	0	15,427
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(29,126)	(28,918)			(28,918)		(208)
Other comprehensive income	0
Issuance of common stock, shares			938,662
Issuance of common stock	12,616	12,616	$ 9	12,607
Transfers from redeemable common stock	957	957		957
Redemptions of common stock, shares			(2,859,010)
Redemptions of common stock	(38,573)	(38,573)	$ (28)	(38,545)
Distributions declared	(21,844)	(21,844)			(21,844)
Other offering costs	(7)	(7)		(7)
Acquisitions of noncontrolling interests	(37,986)	(23,942)		(23,942)			(14,044)
Noncontrolling interests contributions	803						803
Distributions to noncontrolling interests	$ (80)						(80)
Balance, shares at Dec. 31, 2016	56,775,767		56,775,767
Balance, value at Dec. 31, 2016	$ 295,550	$ 293,652	$ 568	$ 455,373	$ (162,289)	$ 0	$ 1,898

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flows from Operating Activities:
Net (loss) income	$ (29,126)	$ 7,132	$ (23,748)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Loss due to property damages	1,938	2,260	707
Equity in loss of unconsolidated joint venture	1,408	368	1,101
Depreciation and amortization	52,051	44,739	47,063
Impairment charges on real estate	0	0	579
Non-cash interest income on real estate related investments	0	(428)	(614)
Gain on sale of real estate, net	0	(13,665)	(55)
Other income	0	(5,085)	0
Unrealized loss on derivative instrument	3	0	0
Deferred rent	(3,084)	(4,499)	(8,392)
Bad debt expense	875	331	176
Amortization of above- and below-market leases, net	(2,330)	(645)	(1,339)
Amortization of deferred financing costs	4,289	2,703	2,778
Interest accretion on real estate securities	(47)	0	9
Net amortization of discount and (premium) on bond and notes payable	38	25	(1)
Foreign currency transaction loss, net	2,997	0	0
Changes in assets and liabilities:
Rents and other receivables	(2,128)	(1,126)	(1,817)
Prepaid expenses and other assets	(8,498)	(7,884)	(7,479)
Accounts payable and accrued liabilities	5,809	595	606
Due to affiliates	(4)	59	0
Other liabilities	2,465	975	2,711
Net cash provided by operating activities	26,656	25,855	12,285
Cash Flows from Investing Activities:
Acquisitions of real estate	(293,831)	0	(191,925)
Improvements to real estate	(30,581)	(35,548)	(33,873)
Proceeds from sales of real estate, net	0	38,772	1,393
Escrow deposits for future real estate purchases	(2,000)	0	0
Investments in real estate loans receivable	0	0	(5,850)
Principal proceeds from assignment of real estate loan receivable	27,850	0	0
Proceeds from condemnation proceeds	0	5,915	0
Insurance proceeds received for property damages	2,453	894	0
Principal repayments on real estate securities	0	0	333
Purchase of interest rate cap	(15)	0	0
Investment in unconsolidated joint venture	(2,820)	(2,760)	(58,987)
Distribution of capital from unconsolidated joint venture	0	0	2,179
Investment in real estate debt securities, net	(4,625)	0	0
Extension fee received on real estate loan receivable	0	0	935
Funding of development obligations	(2,926)	(515)	0
Net cash (used in) provided by investing activities	(306,495)	6,758	(285,795)
Cash Flows from Financing Activities:
Proceeds from notes and bonds payable	564,336	61,189	307,254
Principal payments on notes and bonds payable	(154,802)	(40,631)	(59,203)
Payments of deferred financing costs	(12,377)	(826)	(4,117)
Payments to redeem common stock	(38,573)	(30,100)	(5,104)
Payments of other offering costs	(865)	(9)	(12)
Distributions paid	(9,228)	(8,707)	(5,785)
Noncontrolling interests contributions	803	1,343	2,585
Distributions to noncontrolling interests	(80)	(7,342)	(157)
Acquisitions of noncontrolling interests	(37,986)	0	0
Other financing proceeds, net	647	0	0
Net cash provided by (used in) financing activities	311,875	(25,083)	235,461
Effect of exchange rate changes on cash, cash equivalents and restricted cash	3,549	0	0
Net increase (decrease) in cash, cash equivalents and restricted cash	35,585	7,530	(38,049)
Cash, cash equivalents and restricted cash, beginning of period	28,865	21,335	59,384
Cash, cash equivalents and restricted cash, end of period	64,450	28,865	21,335
Supplemental Disclosure of Cash Flow Information:
Interest paid, net of capitalized interest of $2,025, $1,856 and $1,987 for the years ended December 31, 2016, 2015 and 2014, respectively	20,759	12,265	12,258
Supplemental Disclosure of Noncash Investing and Financing Activities:
Increase in development obligations	0	4,128	0
Mortgage debt assumed in connection with real estate acquisition (at fair value)	0	0	24,793
Application of escrow deposits to acquisition of real estate	0	0	13,000
Increase in accrued improvements to real estate	3,547	0	3,095
Increase in redeemable common stock payable	8,902	3,715	0
Distributions paid to common stockholders through common stock issuances pursuant to the dividend reinvestment plan	$ 12,616	$ 13,573	$ 9,911

CONSOLIDATED STATEMENTS OF CAS8

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Cash Flows [Abstract]
Interest capitalized	$ 2,025	$ 1,856	$ 1,987

ORGANIZATION

ORGANIZATION	12 Months Ended
	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION	ORGANIZATION KBS Strategic Opportunity REIT, Inc. (the “Company”) was formed on October 8, 2008 as a Maryland corporation and elected to be taxed as a real estate investment trust (“REIT”) beginning with the taxable year ended December 31, 2010. The Company conducts its business primarily through KBS Strategic Opportunity (BVI) Holdings, Ltd. (“KBS Strategic Opportunity BVI”), a private company limited by shares according to the British Virgin Islands Business Companies Act, 2004, which was incorporated on December 18, 2015 and is authorized to issue a maximum of 50,000 common shares with no par value. Upon incorporation, KBS Strategic Opportunity BVI issued one certificate containing 10,000 common shares with no par value to KBS Strategic Opportunity Limited Partnership (the “Operating Partnership”), a Delaware limited partnership formed on December 10, 2008. The Company is the sole general partner of, and owns a 0.1% partnership interest in, the Operating Partnership. KBS Strategic Opportunity Holdings LLC (“REIT Holdings”), a Delaware limited liability company formed on December 9, 2008, owns the remaining 99.9% interest in the Operating Partnership and is its sole limited partner. The Company is the sole member and manager of REIT Holdings. Subject to certain restrictions and limitations, the business of the Company is externally managed by KBS Capital Advisors LLC (the “Advisor”), an affiliate of the Company, pursuant to an advisory agreement the Company renewed with the Advisor on October 8, 2016 (the “Advisory Agreement”). The Advisor conducts the Company’s operations and manages its portfolio of real estate, real estate-related debt securities and other real estate-related investments. The Advisor owns 20,000 shares of the Company’s common stock. On January 8, 2009, the Company filed a registration statement on Form S-11 with the Securities and Exchange Commission (the “SEC”) to offer a minimum of 250,000 shares and a maximum of 140,000,000 shares of common stock for sale to the public (the “Offering”), of which 100,000,000 shares were registered in a primary offering and 40,000,000 shares were registered to be sold under the Company’s dividend reinvestment plan. The SEC declared the Company’s registration statement effective on November 20, 2009. The Company ceased offering shares of common stock in its primary offering on November 14, 2012 and continues to offer shares under its dividend reinvestment plan. The Company sold 56,584,976 shares of common stock in its primary offering for gross offering proceeds of $561.7 million . As of December 31, 2016 , the Company had sold 6,035,170 shares of common stock under its dividend reinvestment plan for gross offering proceeds of $ 65.4 million . Also, as of December 31, 2016 , the Company had redeemed 6,140,622 shares sold in the Offering for $ 77.0 million . Additionally, on December 29, 2011 and October 23, 2012, the Company issued 220,994 shares and 55,249 shares of common stock, respectively, for $2.0 million and $0.5 million , respectively, in private transactions exempt from the registration requirements pursuant to Section 4(2) of the Securities Act of 1933. On March 2, 2016, KBS Strategic Opportunity BVI filed a final prospectus with the Israel Securities Authority for a proposed offering of up to 1,000,000,000 Israeli new Shekels of Series A debentures (the “Debentures”) at an annual interest rate not to exceed 4.25% . On March 1, 2016, KBS Strategic Opportunity BVI commenced the institutional tender of the Debentures and accepted application for 842.5 million Israeli new Shekels. On March 7, 2016, KBS Strategic Opportunity BVI commenced the public tender of the Debentures and accepted 127.7 million Israeli new Shekels. In the aggregate, KBS Strategic Opportunity BVI accepted 970.2 million Israeli new Shekels (approximately $249.2 million as of March 8, 2016 ) in both the institutional and public tenders at an annual interest rate of 4.25% . KBS Strategic Opportunity BVI issued the Debentures on March 8, 2016. The terms of the Debentures require principal installment payments equal to 20% of the face value of the Debentures on March 1st of each year from 2019 to 2023. In connection with the above-referenced offering, on March 8, 2016, the Operating Partnership assigned to KBS Strategic Opportunity BVI all of its interests in the subsidiaries through which the Company indirectly owns all of its real estate and real estate-related investments. The Operating Partnership owns all of the issued and outstanding equity of KBS Strategic Opportunity BVI. As a result of these transactions, the Company now holds all of its real estate and real estate-related investments indirectly through KBS Strategic Opportunity BVI. As of December 31, 2016 , the Company owned 11 office properties, one office campus consisting of nine office buildings, one office portfolio consisting of four office buildings and 25 acres of undeveloped land, one office portfolio consisting of three office properties, one office/flex/industrial portfolio consisting of 21 buildings, one retail property, two apartment properties, two investments in undeveloped land encompassing an aggregate of 1,670 acres, two investments in unconsolidated joint ventures and an investment in real estate debt securities.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation and Basis of Presentation The consolidated financial statements include the accounts of the Company, REIT Holdings, the Operating Partnership and their direct and indirect wholly owned subsidiaries, and joint ventures in which the Company has a controlling interest. All significant intercompany balances and transactions are eliminated in consolidation. The consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) as contained within the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) and the rules and regulations of the SEC. Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates. Reclassifications Certain amounts in the Company’s prior period consolidated financial statements have been reclassified to conform to the current period presentation. These reclassifications have not changed the results of operations of prior periods. During the year ended December 31, 2016 , the Company elected to early adopt ASU No. 2016-18 (as defined below). As a result, the Company no longer presents transfers between cash and restricted cash in the consolidated statements of cash flows. Instead, restricted cash is included with cash and cash equivalents when reconciling the beginning of period and end of period total amounts shown on the consolidated statements of cash flows. Revenue Recognition Real Estate The Company recognizes minimum rent, including rental abatements, lease incentives and contractual fixed increases attributable to operating leases, on a straight-line basis over the term of the related leases when collectibility is reasonably assured and records amounts expected to be received in later years as deferred rent receivable. If the lease provides for tenant improvements, the Company determines whether the tenant improvements, for accounting purposes, are owned by the tenant or the Company. When the Company is the owner of the tenant improvements, the tenant is not considered to have taken physical possession or have control of the physical use of the leased asset until the tenant improvements are substantially completed. When the tenant is the owner of the tenant improvements, any tenant improvement allowance (including amounts that can be taken in the form of cash or a credit against the tenant’s rent) that is funded is treated as a lease incentive and amortized as a reduction of revenue over the lease term. Tenant improvement ownership is determined based on various factors including, but not limited to: • whether the lease stipulates how a tenant improvement allowance may be spent; • whether the amount of a tenant improvement allowance is in excess of market rates; • whether the tenant or landlord retains legal title to the improvements at the end of the lease term; • whether the tenant improvements are unique to the tenant or general-purpose in nature; and • whether the tenant improvements are expected to have any residual value at the end of the lease. The Company records property operating expense reimbursements due from tenants for common area maintenance, real estate taxes, and other recoverable costs in the period the related expenses are incurred. The Company makes estimates of the collectibility of its tenant receivables related to base rents, including deferred rent, expense reimbursements and other revenue or income. Management specifically analyzes accounts receivable, deferred rents receivable, historical bad debts, customer creditworthiness, current economic trends and changes in customer payment terms when evaluating the adequacy of the allowance for doubtful accounts. In addition, with respect to tenants in bankruptcy, management makes estimates of the expected recovery of pre-petition and post-petition claims in assessing the estimated collectibility of the related receivable. In some cases, the ultimate resolution of these claims can exceed one year. When a tenant is in bankruptcy, the Company will record a bad debt reserve for the tenant’s receivable balance and generally will not recognize subsequent rental revenue until cash is received or until the tenant is no longer in bankruptcy and has the ability to make rental payments. Real Estate Loans Receivable Interest income on the Company’s real estate loans receivable is recognized on an accrual basis over the life of the investment using the interest method. Direct loan origination or acquisition fees and costs, as well as acquisition premiums or discounts, are amortized over the term of the loan as an adjustment to interest income. The Company places loans on non-accrual status when any portion of principal or interest is 90 days past due, or earlier when concern exists as to the ultimate collection of principal or interest. When a loan is placed on non-accrual status, the Company reserves for any unpaid accrued interest and generally does not recognize subsequent interest income until cash is received, or the loan returns to accrual status. The Company will resume the accrual of interest if it determines the collection of interest, according to the contractual terms of the loan, is probable. The Company generally recognizes income on impaired loans on either a cash basis, where interest income is only recorded when received in cash, or on a cost-recovery basis, where all cash receipts are applied against the carrying value of the loan. The Company considers the collectibility of the loan’s principal balance in determining whether to recognize income on impaired loans on a cash basis or a cost-recovery basis. The Company will recognize interest income on loans purchased at discounts to face value where the Company expects to collect less than the contractual amounts due under the loan when that expectation is due, at least in part, to the credit quality of the borrower. Income is recognized at an interest rate equivalent to the estimated yield on the loan, as calculated using the carrying value of the loan and the expected cash flows. Changes in estimated cash flows are recognized through an adjustment to the yield on the loan on a prospective basis. Projecting cash flows for these types of loans requires a significant amount of assumptions and judgment, which may have a significant impact on the amount and timing of revenue recognized on these investments. The Company recognizes interest income on non-performing loans on a cash basis or cost-recovery basis since these loans generally do not have an estimated yield and collection of principal and interest is not assured. Real Estate Debt Securities Interest income on the Company’s real estate debt securities is recognized on an accrual basis over the life of the investment using the interest method. Direct origination or acquisition fees and costs, as well as acquisition premiums or discounts, are amortized over the term of the securities as an adjustment to interest income. Income is recognized at an interest rate equivalent to the estimated yield on the real estate debt security, as calculated using the carrying value of the real estate debt security and the expected cash flows. Changes in estimated cash flows are recognized through an adjustment to the yield on the real estate debt security on a prospective basis. Projecting cash flows for these types of real estate debt securities requires a significant amount of assumptions and judgment, which may have a significant impact on the amount and timing of revenue recognized on these investments. The Company places real estate debt securities on nonaccrual status when any portion of principal or interest is 90 days past due, or earlier when concern exists as to the ultimate collection of principal or interest. When a real estate debt security is placed on nonaccrual status, the Company reserves for any unpaid accrued interest and generally does not recognize subsequent interest income until cash is received, or the real estate debt security returns to accrual status. The Company will resume the accrual of interest if it determines that the collection of interest, according to the contractual terms of the real estate debt security, is probable. Cash and Cash Equivalents The Company recognizes interest income on its cash and cash equivalents as it is earned and records such amounts as other interest income. Real Estate Depreciation and Amortization Real estate costs related to the acquisition and improvement of properties are capitalized and amortized over the expected useful life of the asset on a straight-line basis. Repair and maintenance costs are charged to expense as incurred and significant replacements and betterments are capitalized. Repair and maintenance costs include all costs that do not extend the useful life of the real estate asset. The Company considers the period of future benefit of an asset to determine its appropriate useful life. Expenditures for tenant improvements are capitalized and amortized over the shorter of the tenant’s lease term or expected useful life. The Company anticipates the estimated useful lives of its assets by class to be generally as follows: Buildings 25-40 years Building improvements 10-40 years Tenant improvements Shorter of lease term or expected useful life Tenant origination and absorption costs Remaining term of related leases, including below-market renewal periods Real Estate Acquisition Valuation The Company records the acquisition of income-producing real estate or real estate that will be used for the production of income as a business combination. All assets acquired and liabilities assumed in a business combination are measured at their acquisition-date fair values. Acquisition costs are expensed as incurred and restructuring costs that do not meet the definition of a liability at the acquisition date are expensed in periods subsequent to the acquisition date. Real estate obtained in satisfaction of a loan is recorded at the estimated fair value of the real estate (net of liabilities assumed) or the fair value of the loan satisfied if more clearly evident. The excess of the carrying value of the loan over the fair value of the property is charged-off against the reserve for loan losses when title to the property is obtained. Costs of holding the property are expensed as incurred in the Company’s consolidated statements of operations. Intangible assets include the value of in-place leases, which represents the estimated value of the net cash flows of the in-place leases to be realized, as compared to the net cash flows that would have occurred had the property been vacant at the time of acquisition and subject to lease-up. Acquired in-place lease value will be amortized to expense over the average remaining terms of the respective in-place leases, including any below-market renewal periods. The Company assesses the acquisition date fair values of all tangible assets, identifiable intangibles and assumed liabilities using methods similar to those used by independent appraisers, generally utilizing a discounted cash flow analysis that applies appropriate discount and/or capitalization rates and available market information. Estimates of future cash flows are based on a number of factors, including historical operating results, known and anticipated trends, and market and economic conditions. The fair value of tangible assets of an acquired property considers the value of the property as if it were vacant. The Company records above-market and below-market in-place lease values for acquired properties based on the present value (using a discount that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) management’s estimate of fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining non-cancelable term of above-market in-place leases and for the initial term plus any extended term for any leases with below-market renewal options. The Company amortizes any recorded above-market or below-market lease values as a reduction or increase, respectively, to rental income over the remaining non-cancelable terms of the respective lease, including any below-market renewal periods. The Company estimates the value of tenant origination and absorption costs by considering the estimated carrying costs during hypothetical expected lease up periods, considering current market conditions. In estimating carrying costs, the Company includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods. The Company amortizes the value of tenant origination and absorption costs to depreciation and amortization expense over the remaining non-cancelable term of the leases. Estimates of the fair values of the tangible assets, identifiable intangibles and assumed liabilities require the Company to make significant assumptions to estimate market lease rates, property-operating expenses, carrying costs during lease-up periods, discount rates, market absorption periods, and the number of years the property will be held for investment. The use of inappropriate assumptions would result in an incorrect valuation of the Company’s acquired tangible assets, identifiable intangibles and assumed liabilities, which would impact the amount of the Company’s net income. Direct investments in undeveloped land or properties without leases in place at the time of acquisition are accounted for as an asset acquisition and not as a business combination. Acquisition fees and expenses are capitalized into the cost basis of an asset acquisition. Additionally, during the time in which the Company is incurring costs necessary to bring these investments to their intended use, certain costs such as legal fees, real estate taxes and insurance and financing costs are also capitalized. Impairment of Real Estate and Related Intangible Assets and Liabilities The Company continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets and liabilities may not be recoverable or realized. When indicators of potential impairment suggest that the carrying value of real estate and related intangible assets and liabilities may not be recoverable, the Company assesses the recoverability by estimating whether the Company will recover the carrying value of the real estate and related intangible assets and liabilities through its undiscounted future cash flows and its eventual disposition. If, based on this analysis, the Company does not believe that it will be able to recover the carrying value of the real estate and related intangible assets and liabilities, the Company would record an impairment loss to the extent that the carrying value exceeds the estimated fair value of the real estate and related intangible assets and liabilities. The Company did not record any impairment losses on its real estate and related intangible assets and liabilities during the years ended December 31, 2016 and 2015 . During the year ended December 31, 2014 , the Company recorded an impairment charge of $ 0.6 million with respect to one real estate property, which was sold on September 10, 2015. Projecting future cash flows involves estimating expected future operating income and expenses related to the real estate and its related intangible assets and liabilities as well as market and other trends. Using inappropriate assumptions to estimate cash flows could result in incorrect fair values of the real estate and its related intangible assets and liabilities and could result in the overstatement of the carrying values of the Company’s real estate and related intangible assets and liabilities and an overstatement of its net income. Insurance Proceeds for Property Damages The Company maintains an insurance policy that provides coverage for property damages and business interruption. Losses due to physical damages are recognized during the accounting period in which they occur, while the amount of monetary assets to be received from the insurance policy is recognized when receipt of insurance recoveries is probable. Losses, which are reduced by the related probable insurance recoveries, are recorded as operating, maintenance and management expenses on the accompanying consolidated statements of operations. Anticipated proceeds in excess of recognized losses would be considered a gain contingency and recognized when the contingency related to the insurance claim has been resolved. Anticipated recoveries for lost rental revenue due to property damages are also considered to be a gain contingency and recognized when the contingency related to the insurance claim has been resolved. Real Estate Held for Sale and Discontinued Operations The Company generally considers real estate to be “held for sale” when the following criteria are met: (i) management commits to a plan to sell the property, (ii) the property is available for sale immediately, (iii) the property is actively being marketed for sale at a price that is reasonable in relation to its current fair value, (iv) the sale of the property within one year is considered probable and (v) significant changes to the plan to sell are not expected. Real estate that is held for sale and its related assets are classified as “real estate held for sale” and “assets related to real estate held for sale,” respectively, for all periods presented in the accompanying consolidated financial statements. Notes payable and other liabilities related to real estate held for sale are classified as “notes payable related to real estate held for sale” and “liabilities related to real estate held for sale,” respectively, for all periods presented in the accompanying consolidated financial statements. Real estate classified as held for sale is no longer depreciated and is reported at the lower of its carrying value or its estimated fair value less estimated costs to sell. Additionally, with respect to properties that were classified as held for sale in financial statements prior to January 1, 2014, the Company records the operating results and related gains (losses) on sale as discontinued operations for all periods presented if the operations have been or are expected to be eliminated and the Company will not have any significant continuing involvement in the operations of the property following the sale. Operating results and related gains (losses) on sale of properties that were disposed of or classified as held for sale in the ordinary course of business during the years ended December 31, 2015 and 2014 that had not been classified as held for sale in financial statements prior to January 1, 2014 are included in continuing operations on the Company’s consolidated statements of operations. Real Estate Loans Receivable and Loan Loss Reserves The Company’s real estate loans receivable are recorded at amortized cost, net of loan loss reserves (if any), and evaluated for impairment at each balance sheet date. The amortized cost of a real estate loan receivable is the outstanding unpaid principal balance, net of unamortized acquisition premiums or discounts and unamortized costs and fees directly associated with the origination or acquisition of the loan. The amount of impairment, if any, will be measured by comparing the amortized cost of the loan to the present value of the expected cash flows discounted at the loan’s effective interest rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent and collection of principal and interest is not assured. If a loan is deemed to be impaired, the Company will record a loan loss reserve and a provision for loan losses to recognize impairment. As of December 31, 2016 , there was no loan loss reserve and the Company did not record any impairment losses related to its real estate loans receivable during the years ended December 31, 2016 , 2015 and 2014 . The reserve for loan losses is a valuation allowance that reflects management’s estimate of loan losses inherent in the loan portfolio as of the balance sheet date. The reserve is adjusted through “Provision for loan losses” on the Company’s consolidated statements of operations and is decreased by charge-offs to specific loans when losses are confirmed. The Company considers a loan to be impaired when, based upon current information and events, it believes that it is probable that the Company will be unable to collect all amounts due under the contractual terms of the loan agreement. If the Company purchases a loan at a discount to face value and at the acquisition date the Company expects to collect less than the contractual amounts due under the terms of the loan based, at least in part, on the Company’s assessment of the credit quality of the borrower, the Company will consider such a loan to be impaired when, based upon current information and events, it believes that it is probable that the Company will be unable to collect all amounts the Company estimated to be collected at the time of acquisition. The Company also considers a loan to be impaired if it grants the borrower a concession through a modification of the loan terms or if it expects to receive assets (including equity interests in the borrower) with fair values that are less than the carrying value of the loan in satisfaction of the loan. A reserve is established when the present value of payments expected to be received, observable market prices, the estimated fair value of the collateral (for loans that are dependent on the collateral for repayment) or amounts expected to be received in satisfaction of a loan are lower than the carrying value of that loan. Failure to recognize impairments would result in the overstatement of earnings and the carrying value of the Company’s real estate loans held for investment. Actual losses, if any, could significantly differ from estimated amounts. Real Estate Debt Securities The Company classifies its investment in real estate debt securities as held to maturity as the Company has the intent and ability to hold this investment until maturity. The Company’s real estate debt securities are recorded at amortized cost, net of other-than-temporary impairment (if any), and evaluated for other-than-temporary impairment at each balance sheet date. The amortized cost of a real estate debt security is the outstanding unpaid principal balance, net of unamortized acquisition premiums or discounts and unamortized costs and fees directly associated with the origination or acquisition of the real estate debt security. The amount of other-than-temporary impairment, if any, will be measured by comparing the amortized cost of the real estate debt security to the present value of the expected cash flows discounted at the real estate debt security’s effective interest rate, the real estate debt security’s observable market price, or the fair value of the collateral if the real estate debt security is collateral dependent and collection of principal and interest is not assured. If a real estate debt security is deemed to be other-than-temporarily impaired, the Company will record an other-than-temporary impairment on the consolidated statements of operations. As of December 31, 2016 , the Company did not record any other-than-temporary impairment losses related to its real estate debt securities during the year ended December 31, 2016 . Investments in Unconsolidated Joint Ventures Equity Method The Company accounts for investments in unconsolidated joint venture entities in which the Company may exercise significant influence over, but does not control, using the equity method of accounting. Under the equity method, the investment is initially recorded at cost and subsequently adjusted to reflect additional contributions or distributions and the Company’s proportionate share of equity in the joint venture’s income (loss). The Company recognizes its proportionate share of the ongoing income or loss of the unconsolidated joint venture as equity in income (loss) of unconsolidated joint venture on the consolidated statements of operations. On a quarterly basis, the Company evaluates its investment in an unconsolidated joint venture for other-than-temporary impairments. As of December 31, 2016 , the Company did not identify any indicators of impairment related to its unconsolidated real estate joint venture accounted for under the equity method. Cost Method The Company accounts for investments in unconsolidated joint venture entities in which the Company does not have the ability to exercise significant influence and has virtually no influence over partnership operating and financial policies using the cost method of accounting. Under the cost method, income distributions from the partnership are recognized in other income. Distributions that exceed the Company’s share of earnings are applied to reduce the carrying value of the Company’s investment and any capital contributions will increase the carrying value of the Company’s investment. On a quarterly basis, the Company evaluates its cost method investment in an unconsolidated joint venture for other-than-temporary impairments. The fair value of a cost method investment is not estimated if there are no identified events or changes in circumstances that would indicate a significant adverse effect on the fair value of the investment. As of December 31, 2016 , the Company did not identify any indicators of impairment related to its unconsolidated real estate joint venture accounted for under the cost method. Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents may include cash and short-term investments. Cash and cash equivalents are stated at cost, which approximates fair value. There were no restrictions on the use of the Company’s cash and cash equivalents as of December 31, 2016 and 2015 . The Company’s cash and cash equivalents balance exceeded federally insurable limits as of December 31, 2016 . The Company monitors the cash balances in its operating accounts and adjusts the cash balances as appropriate; however, these cash balances could be impacted if the underlying financial institutions fail or are subject to other adverse conditions in the financial markets. To date, the Company has experienced no loss or lack of access to cash in its operating accounts. Restricted Cash Restricted cash is comprised of lender impound reserve accounts on the Company’s borrowings for security deposits, property taxes, insurance, debt service obligations and capital improvements and replacements. Rents and Other Receivables The Company periodically evaluates the collectibility of amounts due from tenants and maintains an allowance for doubtful accounts for estimated losses resulting from the inability of tenants to make required payments under lease agreements. In addition, the Company maintains an allowance for deferred rent receivable that arises from the straight-lining of rents. The Company exercises judgment in establishing these allowances and considers payment history and current credit status of its tenants in developing these estimates. Deferred Financing Costs Deferred financing costs represent commitment fees, loan fees, legal fees and other third-party costs associated with obtaining financing and are presented on the balance sheet as a direct deduction from the carrying value of the associated debt liability. These costs are amortized over the terms of the respective financing agreements using the interest method. Unamortized deferred financing costs are generally expensed when the associated debt is refinanced or repaid before maturity unless specific rules are met that would allow for the carryover of such costs to the refinanced debt. Deferred financing costs incurred before an associated debt liability is recognized are included in prepaid and other assets on the balance sheet. Costs incurred in seeking financing transactions that do not close are expensed in the period in which it is determined that the financing will not close. Fair Value Measurements Under GAAP, the Company is required to measure certain financial instruments at fair value on a recurring basis. In addition, the Company is required to measure other non-financial and financial assets at fair value on a non-recurring basis (e.g., carrying value of impaired real estate loans receivable and long-lived assets). Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The GAAP fair value framework uses a three-tiered approach. Fair value measurements are classified and disclosed in one of the following three categories: • Level 1: unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities; • Level 2: quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which significant inputs and significant value drivers are observable in active markets; and • Level 3: prices or valuation techniques where little or no market data is available that requires inputs that are both significant to the fair value measurement and unobservable. When available, the Company utilizes quoted market prices from an independent third-party source to determine fair value and classifies such items in Level 1 or Level 2. In instances where the market for a financial instrument is not active, regardless of the availability of a nonbinding quoted market price, observable inputs might not be relevant and could require the Company to make a significant adjustment to derive a fair value measurement. Additionally, in an inactive market, a market price quoted from an independent third party may rely more on models with inputs based on information available only to that independent third party. When the Company determines that the market for a financial instrument owned by the Company is illiquid or when market transactions for similar instruments do not appear orderly, the Company uses several valuation sources (including internal valuations, discounted cash flow analysis and quoted market prices) and establishes a fair value by assigning weights to the various valuation sources. Additionally, when determining the fair value of liabilities in circumstances in which a quoted price in an active market for an identical liability is not available, the Company measures fair value using (i) a valuation technique that uses the quoted price of the identical liability when traded as an asset or quoted prices for similar liabilities when traded as assets or (ii) another valuation technique that is consistent with the principles of fair value measurement, such as the income approach or the market approach. Changes in assumptions or estimation methodologies can have a material effect on these estimated fair values. In this regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, may not be realized in an immediate settlement of the instrument. The Company considers the following factors to be indicators of an inactive market: (i) there are few recent transactions, (ii) price quotations are not based on current information, (iii) price quotations vary substantially either over time or among market makers (for example, some brokered markets), (iv) indexes that previously were highly correlated with the fair values of the asset or liability are demonstrably uncorrelated with recent indications of fair value for that asset or liability, (v) there is a significant increase in implied liquidity risk premiums, yields, or performance indicators (such as delinquency rates or loss severities) for observed transactions or quoted prices when compared with the Company’s estimate of expected cash flows, considering all available market data about credit and other nonperformance risk for the asset or liability, (vi) there is a wide bid-ask spread or significan

REAL ESTATE HELD FOR INVESTMENT

REAL ESTATE HELD FOR INVESTMENT	12 Months Ended
	Dec. 31, 2016
Real Estate [Abstract]
REAL ESTATE HELD FOR INVESTMENT	REAL ESTATE HELD FOR INVESTMENT As of December 31, 2016 , the Company owned 11 office properties, one office campus consisting of nine office buildings, one office portfolio consisting of four office buildings and 25 acres of undeveloped land, one office portfolio consisting of three office properties, one office/flex/industrial portfolio consisting of 21 buildings and one retail property encompassing, in the aggregate, approximately 5.5 million rentable square feet. As of December 31, 2016 , these properties were 86% occupied. In addition, the Company owned two apartment properties containing 383 units and encompassing approximately 0.3 million rentable square feet, which were 92% occupied. The Company also owned two investments in undeveloped land encompassing an aggregate of 1,670 acres. The following table summarizes the Company’s real estate held for investment as of December 31, 2016 and 2015 , respectively (in thousands): December 31, 2016 December 31, 2015 Land $ 322,499 $ 223,201 Buildings and improvements 855,744 646,979 Tenant origination and absorption costs 48,964 43,894 Total real estate, cost 1,227,207 914,074 Accumulated depreciation and amortization (120,176 ) (91,560 ) Total real estate, net $ 1,107,031 $ 822,514 The following table provides summary information regarding the Company’s real estate held for investment as of December 31, 2016 (in thousands): Property Date Acquired or Foreclosed on City State Property Type Land Building and Improvements Tenant Origination and Absorption Total Real Estate, at Cost Accumulated Depreciation and Amortization Total Real Estate, Net Ownership % Northridge Center I & II 03/25/2011 Atlanta GA Office $ 2,234 $ 7,495 $ — $ 9,729 $ (2,509 ) $ 7,220 100.0 % Iron Point Business Park 06/21/2011 Folsom CA Office 2,671 19,515 — 22,186 (4,914 ) 17,272 100.0 % Richardson Portfolio: Palisades Central I 11/23/2011 Richardson TX Office 1,037 10,260 657 11,954 (2,605 ) 9,349 90.0 % Palisades Central II 11/23/2011 Richardson TX Office 810 17,835 348 18,993 (4,432 ) 14,561 90.0 % Greenway I 11/23/2011 Richardson TX Office 561 2,363 — 2,924 (691 ) 2,233 90.0 % Greenway III 11/23/2011 Richardson TX Office 702 3,709 559 4,970 (1,481 ) 3,489 90.0 % Undeveloped Land 11/23/2011 Richardson TX Undeveloped Land 3,134 — — 3,134 — 3,134 90.0 % Total Richardson Portfolio 6,244 34,167 1,564 41,975 (9,209 ) 32,766 Park Highlands (1) 12/30/2011 North Las Vegas NV Undeveloped Land 34,162 — — 34,162 — 34,162 (1) Bellevue Technology Center 07/31/2012 Bellevue WA Office 25,506 56,814 3,577 85,897 (10,810 ) 75,087 100.0 % Powers Ferry Landing East 09/24/2012 Atlanta GA Office 1,643 8,016 99 9,758 (2,393 ) 7,365 100.0 % 1800 West Loop 12/04/2012 Houston TX Office 8,360 60,482 4,781 73,623 (12,894 ) 60,729 100.0 % West Loop I & II 12/07/2012 Houston TX Office 7,300 32,240 1,864 41,404 (5,921 ) 35,483 100.0 % Burbank Collection 12/12/2012 Burbank CA Retail 4,175 11,090 725 15,990 (1,721 ) 14,269 90.0 % Austin Suburban Portfolio 03/28/2013 Austin TX Office 8,288 68,344 1,872 78,504 (10,533 ) 67,971 100.0 % Westmoor Center 06/12/2013 Westminster CO Office 10,058 67,157 5,175 82,390 (12,022 ) 70,368 100.0 % Central Building 07/10/2013 Seattle WA Office 7,015 26,720 1,636 35,371 (4,013 ) 31,358 100.0 % 50 Congress Street 07/11/2013 Boston MA Office 9,876 41,396 2,407 53,679 (6,747 ) 46,932 100.0 % 1180 Raymond 08/20/2013 Newark NJ Apartment 8,292 37,542 — 45,834 (3,925 ) 41,909 100.0 % Park Highlands II (2) 12/10/2013 North Las Vegas NV Undeveloped Land 23,464 — — 23,464 — 23,464 100.0 % Maitland Promenade II 12/18/2013 Orlando FL Office 3,434 24,722 3,520 31,676 (4,516 ) 27,160 100.0 % Plaza Buildings 01/14/2014 Bellevue WA Office 53,040 138,900 7,301 199,241 (18,448 ) 180,793 100.0 % 424 Bedford 01/31/2014 Brooklyn NY Apartment 8,860 25,498 — 34,358 (2,049 ) 32,309 90.0 % Richardson Land II 09/04/2014 Richardson TX Undeveloped Land 3,418 — — 3,418 — 3,418 90.0 % Westpark Portfolio 05/10/2016 Redmond WA Office/Flex/Industrial 36,085 84,660 8,813 129,558 (4,550 ) 125,008 100.0 % 353 Sacramento 07/11/2016 San Francisco CA Office 58,374 110,986 5,630 174,990 (3,002 ) 171,988 100.0 % $ 322,499 $ 855,744 $ 48,964 $ 1,227,207 $ (120,176 ) $ 1,107,031 _____________________ (1) On March 18, 2016, the Company increased its membership interest in the Park Highlands joint venture from 50.1% to 51.58% by acquiring an additional 1.48% membership interest from one of the joint venture partners. On June 6, 2016, the Company increased its membership interest in the Park Highlands joint venture from 51.58% to 97.62% by acquiring an additional 46.04% membership interest from one of the joint venture partners. On June 25, 2016, the Company increased its membership interest in the Park Highlands joint venture from 97.62% to 100% by acquiring the remaining 2.38% membership interest from the remaining joint venture partner. On September 7, 2016, a subsidiary of the Company that owns a portion of Park Highlands, sold 820 units of 10% Class A non-voting preferred membership units for $0.8 million to accredited investors. The amount of the Class A non-voting preferred membership units raised, net of offering costs, is included in other liabilities on the accompanying consolidated balance sheets. (2) On March 18, 2016, the Company increased its membership interest in the Park Highlands II joint venture from 99.5% to 100% by acquiring the remaining 0.5% membership interest from its joint venture partner. Operating Leases Certain of the Company’s real estate properties are leased to tenants under operating leases for which the terms and expirations vary. As of December 31, 2016 , the leases, excluding options to extend and apartment leases, which have terms that are generally one year or less, had remaining terms of up to 11.3 years with a weighted-average remaining term of 3.6 years. Some of the leases have provisions to extend the lease agreements, options for early termination after paying a specified penalty, rights of first refusal to purchase the property at competitive market rates, and other terms and conditions as negotiated. The Company retains substantially all of the risks and benefits of ownership of the real estate assets leased to tenants. Generally, upon the execution of a lease, the Company requires a security deposit from tenants in the form of a cash deposit and/or a letter of credit. The amount required as a security deposit varies depending upon the terms of the respective leases and the creditworthiness of the tenant, but generally are not significant amounts. Therefore, exposure to credit risk exists to the extent that a receivable from a tenant exceeds the amount of its security deposit. Security deposits received in cash and assumed in real estate acquisitions or foreclosures related to tenant leases are included in other liabilities in the accompanying consolidated balance sheets and totaled $7.2 million and $5.3 million as of December 31, 2016 and 2015 , respectively. During the years ended December 31, 2016 , 2015 and 2014 , the Company recognized deferred rent from tenants of $3.1 million , $4.5 million and $ 8.4 million , respectively, net of lease incentive amortization. As of December 31, 2016 and 2015 , the cumulative deferred rent receivable balance, including unamortized lease incentive receivables, was $26.8 million and $22.8 million , respectively, and is included in rents and other receivables on the accompanying balance sheets. The cumulative deferred rent balance included $3.2 million and $2.8 million of unamortized lease incentives as of December 31, 2016 and 2015 , respectively. The Company records property operating expense reimbursements due from tenants for common area maintenance, real estate taxes, and other recoverable costs in the period the related expenses are incurred. As of December 31, 2016 , the future minimum rental income from the Company’s properties, excluding apartment leases, under non-cancelable operating leases was as follows (in thousands): 2017 $ 99,868 2018 87,056 2019 72,682 2020 57,188 2021 43,201 Thereafter 90,412 $ 450,407 As of December 31, 2016 , the Company’s commercial real estate properties were leased to approximately 650 tenants over a diverse range of industries and geographic areas. The Company’s highest tenant industry concentrations (greater than 10% of annualized base rent) were as follows: Industry Number of Tenants Annualized Base Rent (1) (in thousands) Percentage of Annualized Base Rent Finance 51 $ 11,223 10.8 % Computer System Design & Programming 57 11,161 10.7 % Insurance Carriers & Related Activities 31 10,474 10.0 % $ 32,858 31.5 % _____________________ (1) Annualized base rent represents annualized contractual base rental income as of December 31, 2016 , adjusted to straight-line any contractual tenant concessions (including free rent), rent increases and rent decreases from the lease’s inception through the balance of the lease term. No other tenant industries accounted for more than 10% of annualized base rent. No material tenant credit issues have been identified at this time. Geographic Concentration Risk As of December 31, 2016 , the Company’s real estate investments in Washington, California and Texas represented 31.5% , 15.5% and 15.3% of the Company’s total assets, respectively. As a result, the geographic concentration of the Company’s portfolio makes it particularly susceptible to adverse economic developments in the Washington, California and Texas real estate markets. Any adverse economic or real estate developments in these markets, such as business layoffs or downsizing, industry slowdowns, relocations of businesses, changing demographics and other factors, or any decrease in demand for office space resulting from the local business climate, could adversely affect the Company’s operating results and its ability to make distributions to stockholders. Property Damage During the year ended December 31, 2016 , 1800 West Loop suffered physical damages due to floods. The Company’s insurance policy provides coverage for property damage and business interruption subject to a deductible of up to $100,000 per incident. Based on management’s estimates, the Company recognized an estimated aggregate loss due to damages of $1.5 million during the year ended December 31, 2016 , which was reduced by $1.4 million of estimated insurance recoveries related to such damages, which the Company determined were probable of collection. The aggregate net loss due to damages of $0.1 million during the year ended December 31, 2016 was classified as operating, maintenance and management expenses on the accompanying consolidated statements of operations and relates to the Company’s insurance deductible. Recent Acquisitions On May 10, 2016, the Company, through an indirect wholly owned subsidiary (the “Westpark Portfolio Buyer”), acquired a portfolio of 21 office/flex/industrial buildings containing a total of 778,472 rentable square feet located on approximately 41 acres of land in Redmond, Washington (the “Westpark Portfolio”). The purchase price (net of closing credits) of the Westpark Portfolio was $125.8 million plus closing costs. The seller is not affiliated with the Company or the Advisor. The Company recorded $36.1 million to land, $81.2 million to building and improvements, $9.0 million to tenant origination and absorption costs, $0.1 million to above-market lease assets and $0.6 million to below-market lease liabilities during the year ended December 31, 2016. The intangible assets and liabilities acquired in connection with this acquisition have weighted-average amortization periods as of the date of acquisition of 4.4 years for tenant origination and absorption costs, 2.7 years for above-market lease assets and 3.5 years for below-market lease liabilities. On July 11, 2016, the Company, through an indirect wholly owned subsidiary, acquired an office building containing 284,751 rentable square feet located on approximately 0.35 acres of land in San Francisco, California (“353 Sacramento”). The purchase price (net of closing credits) of 353 Sacramento was $168.0 million plus closing costs. The seller is not affiliated with the Company or the Advisor. The Company recorded $58.4 million to land, $110.0 million to building and improvements, $5.7 million to tenant origination and absorption costs and $6.1 million to below-market lease liabilities during the year ended December 31, 2016. The intangible assets and liabilities acquired in connection with this acquisition have weighted-average amortization periods as of the date of acquisition of 3.3 years for tenant origination and absorption costs and 2.6 years for below-market lease liabilities. The Company recorded these acquisitions as business combinations and expensed $3.5 million of acquisition costs related to the Westpark Portfolio and 353 Sacramento for the year ended December 31, 2016. During the year ended December 31, 2016, the Company recognized $14.7 million of total revenues and $7.7 million of operating expenses from these properties.

TENANT ORIGINATION AND ABSORPTI

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES	12 Months Ended
	Dec. 31, 2016
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities [Abstract]
TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES	TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES As of December 31, 2016 and 2015 , the Company’s tenant origination and absorption costs, above-market lease assets and below-market lease liabilities (excluding fully amortized assets and liabilities and accumulated amortization) were as follows (in thousands): Tenant Origination and Absorption Costs Above-Market Lease Assets Below-Market Lease Liabilities December 31, December 31, December 31, December 31, December 31, December 31, Cost $ 48,964 $ 43,894 $ 1,877 $ 2,399 $ (10,945 ) $ (5,826 ) Accumulated Amortization (23,989 ) (22,749 ) (1,244 ) (1,361 ) 4,394 3,091 Net Amount $ 24,975 $ 21,145 $ 633 $ 1,038 $ (6,551 ) $ (2,735 ) Increases (decreases) in net income as a result of amortization of the Company’s tenant origination and absorption costs, above-market lease assets and below-market lease liabilities for the years ended December 31, 2016 , 2015 and 2014 were as follows (in thousands): Tenant Origination and Absorption Costs Above-Market Lease Assets Below-Market Lease Liabilities For the Years Ended December 31, For the Years Ended December 31, For the Years Ended December 31, 2016 2015 2014 2016 2015 2014 2016 2015 2014 Amortization $ (10,850 ) $ (10,555 ) $ (15,020 ) $ (459 ) $ (1,023 ) $ (1,070 ) $ 2,789 $ 1,668 $ 2,409 The remaining unamortized balance for these outstanding intangible assets and liabilities as of December 31, 2016 will be amortized for the years ending December 31 as follows (in thousands): Tenant Origination and Above-Market Below-Market 2017 $ (9,614 ) $ (296 ) $ 3,501 2018 (6,014 ) (139 ) 1,558 2019 (3,835 ) (89 ) 751 2020 (2,423 ) (65 ) 501 2021 (1,484 ) (44 ) 178 Thereafter (1,605 ) — 62 $ (24,975 ) $ (633 ) $ 6,551 Weighted-Average Remaining Amortization Period 3.8 years 3.1 years 2.6 years Additionally, as of December 31, 2016 and 2015 , the Company had recorded tax abatement intangible assets, net of amortization, which are included in prepaid expenses and other assets in the accompanying balance sheets, of $6.3 million and $7.2 million , respectively. During the years ended December 31, 2016 , 2015 and 2014 , the Company recorded amortization expense of $ $1.0 million , $1.0 million and $0.9 million related to tax abatement intangible assets, respectively.

REAL ESTATE LOAN RECEIVABLE

REAL ESTATE LOAN RECEIVABLE	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
REAL ESTATE LOANS RECEIVABLE	REAL ESTATE LOAN RECEIVABLE As of December 31, 2015 , the Company owned one real estate loan receivable, which was repaid during the year ended December 31, 2016 . The information for that real estate loan receivable as of December 31, 2016 and 2015 is set forth below (in thousands): Loan Name Location of Related Property or Collateral Date Originated Property Type Loan Type Outstanding Principal Balance as of December 31, 2016 Book Value as of December 31, 2016 Book Value as of December 31, 2015 (1) Contractual Interest Rate Annualized Effective Interest Rate Maturity Date University House First Mortgage New York, New York 3/20/2013 Student Housing Mortgage $ — $ — $ 27,850 (2) (2) (2) _____________________ (1) Book value of the real estate loan receivable represents outstanding principal balance adjusted for unamortized acquisition discounts, origination fees and direct origination and acquisition costs and additional interest accretion. (2) See below for a discussion of the University House First Mortgage. On June 30, 2015, the University House First Mortgage matured without repayment. As a result, on July 1, 2015, the Company provided notice to the borrower of default. As of July 1, 2015, the Company had determined the University House Mortgage to be impaired and began recognizing income on a cash basis. The Company did not record a provision for loan loss reserves during the years ended December 31, 2016 or 2015 as the Company believed the entire principal balance of $27.9 million related to the University House First Mortgage to be fully recoverable. On April 21, 2016, the Company, through an indirect wholly owned subsidiary, entered into an assignment of mortgage to assign the University House First Mortgage to an assignee unaffiliated with the Company or the Advisor. On April 22, 2016, the Company received $31.6 million in connection with the assignment of the University House First Mortgage. The proceeds received from the assignment reflect the entire principal balance and interest due, including any default interest, as of April 21, 2016, plus any legal costs incurred by the Company in connection with the assignment. For the years ended December 31, 2016 , 2015 and 2014 interest income from real estate loans receivable consisted of the following (in thousands): 2016 2015 2014 Contractual interest income (including deferred interest) $ 3,655 $ 1,540 $ 2,752 Accretion of closing costs, origination fees and extension fees, net — 428 614 Interest income from real estate loans receivable $ 3,655 $ 1,968 $ 3,366

REAL ESTATE DEBT SECURITIES

REAL ESTATE DEBT SECURITIES	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
REAL ESTATE DEBT SECURITIES	REAL ESTATE DEBT SECURITIES As of December 31, 2016 , the Company owned an investment in real estate debt securities. The information for those real estate debt securities as of December 31, 2016 is set forth below (in thousands): Debt Securities Name Date Originated Debt Securities Type Outstanding Principal Balance as of December 31, 2016 (1) Book Value as of December 31, 2016 (2) Contractual Interest Rate (3) Annualized Effective Interest Rate (3) Maturity Date Battery Point Series B Preferred Units 10/28/2016 Series B Preferred Units $ 5,000 $ 4,683 7.0 % 13.1 % 10/28/2019 _____________________ (1) Outstanding principal balance as of December 31, 2016 represents original principal balance outstanding under the real estate debt securities. (2) Book value of the real estate debt securities represents outstanding principal balance adjusted for unamortized acquisition discounts, origination fees and direct origination and acquisition costs and additional interest accretion. (3) Contractual interest rate is the stated interest rate on the face of the real estate securities. Annualized effective interest rate is calculated as the actual interest income recognized in 2016 , using the interest method, annualized (if applicable) and divided by the average amortized cost basis of the investment. The annualized effective interest rate and contractual interest rate presented are as of December 31, 2016 . See "Battery Point Series B Preferred Units" below. The following summarizes the activity related to real estate debt securities for the year ended December 31, 2016 (in thousands): Real estate debt securities - December 31, 2015 $ — Face value of real estate debt securities acquired 5,000 Deferred interest receivable and interest accretion 30 Commitment fee, net of closing costs and acquisition fee (364 ) Accretion of commitment fee, net of closing costs 17 Real estate debt securities - December 31, 2016 $ 4,683 For the years ended December 31, 2016 , interest income from real estate debt securities consisted of the following (in thousands): Contractual interest income $ 63 Interest accretion 30 Accretion of commitment fee, net of closing costs and acquisition fee 17 Interest income from real estate debt securities $ 110 Battery Point Series B Preferred Units On October 28, 2016, the Company, through an indirect wholly owned subsidiary, entered into a purchase agreement to purchase up to an aggregate of 25,000 units of Series B Preferred Units (the “Preferred Units”) of Battery Point Trust LLC (“Battery Point”), over a six-month period at a per-unit price of $1,000 , resulting in an aggregate investment of $25.0 million . On October 28, 2016, the Company purchased an initial 5,000 Preferred Units, net of an equity commitment fee of $0.6 million , for a net payment of $4.4 million . The Preferred Units are entitled to the payment of quarterly distributions at the following annual rates: 7.0% for the period commencing October 28, 2016 through April 28, 2017; 9.0% for the period commencing April 29, 2017 through April 28, 2018; and 12.0% for the period commencing April 29, 2018 through October 28, 2019. The Company may be required to purchase additional Preferred Units no more frequently than once a month during the period beginning in November 2016 and ending in April 2017. Each minimum required additional purchase of Preferred Units is 5,000 units. Battery Point may redeem the Preferred Units at any time, subject to payment to the Company of an exit fee in the amount of 1.0% of the redemption price if Battery Point redeems the Preferred Units after April 28, 2017.

REAL ESTATE SALES

REAL ESTATE SALES	12 Months Ended
	Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
REAL ESTATE SALES	REAL ESTATE SALES In accordance with ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU No. 2014-08”), results of operations and related gains (losses) on sale from properties that are classified as held for sale in the ordinary course of business on or subsequent to January 1, 2014 would generally be included in continuing operations on the Company’s consolidated statements of operations. Results of operations and related gains (losses) on sale from properties that were classified as held for sale in financial statements issued prior to January 1, 2014 will remain in discontinued operations on the Company’s consolidated statements of operations. Prior to the adoption of ASU No. 2014-08, the operations of properties held for sale or to be disposed of and the aggregate net gains recognized upon their disposition were presented as discontinued operations in the accompanying consolidated statements of operations for all periods presented. During the year ended December 31, 2016 , the Company did not dispose of any real estate properties. During the years ended December 31, 2014 and 2015, the Company sold one office property and two office properties, respectively. The operations of these properties and gain on sale are included in continuing operations on the accompanying statements of operations. The following table summarizes certain revenue and expenses related to these properties for the years ended December 31, 2016 , 2015 and 2014 (in thousands): Years Ended December 31, 2016 2015 2014 Total revenues $ — $ 215 $ 1,134 Total expenses 16 645 2,473

NOTES AND BONDS PAYABLE

NOTES AND BONDS PAYABLE	12 Months Ended
	Dec. 31, 2016
Notes and Bonds Payable [Abstract]
NOTES AND BONDS PAYABLE	NOTES AND BONDS PAYABLE As of December 31, 2016 and December 31, 2015 , the Company’s notes and bonds payable consisted of the following (dollars in thousands): Book Value as of Book Value as of Contractual Interest Rate as of December 31, 2016 (1) Effective Interest Rate at December 31, 2016 (1) Payment Type Maturity Date (2) Richardson Portfolio Mortgage Loan $ 40,594 $ 41,177 One-Month LIBOR + 2.10% 2.72% Principal & Interest 05/01/2017 Bellevue Technology Center Mortgage Loan 59,400 52,960 One-Month LIBOR + 2.25% 2.87% Principal & Interest 03/01/2017 (3) Portfolio Revolving Loan Facility (4) 11,799 47,087 One-Month LIBOR + 2.25% 2.87% Principal & Interest 05/01/2017 Portfolio Mortgage Loan 106,479 100,032 One-Month LIBOR + 2.25% 2.87% Principal & Interest 07/01/2017 Burbank Collection Mortgage Loan 9,812 9,098 One-Month LIBOR + 2.35% 3.04% Principal & Interest 09/30/2017 50 Congress Mortgage Loan 31,525 28,075 One-Month LIBOR + 1.90% 2.52% Interest Only (5) 10/01/2017 1180 Raymond Bond Payable 6,635 6,795 6.50% 6.50% Principal & Interest 09/01/2036 Central Building Mortgage Loan 27,600 24,896 One-Month LIBOR + 1.75% 2.37% Interest Only 11/13/2018 Maitland Promenade II Mortgage Loan (6) 20,877 20,182 One-Month LIBOR + 2.90% 3.52% Principal & Interest 01/01/2018 Westmoor Center Mortgage Loan 62,000 56,036 One-Month LIBOR + 2.25% 2.87% Interest Only (5) 02/01/2018 Plaza Buildings Senior Loan 109,866 111,000 One-Month LIBOR + 1.90% 2.52% Principal & Interest 01/14/2017 (7) 424 Bedford Mortgage Loan 24,832 25,358 3.91% 3.91% Principal & Interest 10/01/2022 1180 Raymond Mortgage Loan 31,000 28,100 One-Month LIBOR + 2.25% 2.87% Interest Only 12/01/2017 KBS SOR (BVI) Holdings, Ltd. Series A Debentures (8) 251,811 — 4.25% 4.25% (6) 03/01/2023 Westpark Portfolio Mortgage Loan 83,200 — One-Month LIBOR + 2.50% 3.12% Interest Only (5) 07/01/2020 353 Sacramento Mortgage Loan (9) 85,500 — One-Month LIBOR + 2.75% 3.46% Interest Only 10/14/2018 Total Notes and Bonds Payable principal outstanding 962,930 550,796 Net Premium/(Discount) on Notes and Bonds Payable (10) 88 50 Deferred financing costs, net (12,394 ) (3,523 ) Total Notes and Bonds Payable, net $ 950,624 $ 547,323 _____________________ (1) Contractual interest rate represents the interest rate in effect under the loan as of December 31, 2016 . Effective interest rate is calculated as the actual interest rate in effect as of December 31, 2016 (consisting of the contractual interest rate and contractual floor rates), using interest rate indices at December 31, 2016 , where applicable. (2) Represents the initial maturity date or the maturity date as extended as of December 31, 2016 ; subject to certain conditions, the maturity dates of certain loans may be extended beyond the date shown. (3) Subsequent to December 31, 2016 , the maturity date of the Bellevue Technology Center Mortgage Loan was extended to March 1, 2019. (4) The Portfolio Revolving Loan Facility is secured by the 1800 West Loop Building and the Iron Point Business Park. The Portfolio Revolving Loan Facility is comprised of $63.5 million of revolving debt and $12.4 million of non-revolving debt available to be used for tenant improvements, leasing commissions and capital improvements, subject to certain terms and conditions contained in the loan documents. As of December 31, 2016 , $11.8 million of non-revolving debt had been disbursed to the Company and the remaining $63.5 million of revolving debt and $0.6 million of non-revolving debt is available for future disbursements, subject to certain conditions contained in the loan documents. (5) Represents the payment type required under the loan as of December 31, 2016 . Certain future monthly payments due under this loan also include amortizing principal payments. For more information of the Company's contractual obligations under its notes and bonds payable, see five-year maturity table below. (6) Interest on the Maitland Promenade II Mortgage Loan is calculated at a variable annual rate of 290 basis points over one-month LIBOR, but at no point shall the interest rate be less than 3.25% . (7) Subsequent to December 31, 2016 , the maturity date of the Plaza Buildings Senior Loan was extended to January 14, 2018. (8) See " - Israeli Bond Financing" below. (9) As of December 31, 2016, $85.5 million had been disbursed to the Company and up to $30.0 million is available for future disbursements to be used for tenant improvements, leasing commissions and capital improvements, subject to certain terms and conditions contained in the loan documents. In addition, the Company has entered into an interest rate cap that effectively limits one-month LIBOR on up to $115.5 million of the outstanding loan balance at 3.0% effective October 14, 2016 through October 14, 2018. (10) Represents the unamortized premium/discount on notes and bonds payable due to the above- and below-market interest rates when the debt was assumed. The discount/premium is amortized over the remaining life of the notes and bonds payable. During the years ended December 31, 2016 , 2015 and 2014 , the Company incurred $ 29.2 million , $15.0 million and $15.6 million of interest expense, respectively. Included in interest expense for the years ended December 31, 2016 , 2015 and 2014 , was $4.3 million , $ 2.7 million and $ 2.8 million of amortization of deferred financing costs, respectively. Additionally, during the years ended December 31, 2016 , 2015 and 2014 , the Company capitalized $2.0 million , $ 1.9 million and $ 2.0 million of interest, respectively, to its investments in undeveloped land. As of December 31, 2016 , the Company’s deferred financing costs were $12.5 million , net of amortization, of which $12.4 million is included in notes and bonds payable, net and $0.1 million is included in prepaid expenses and other assets on the accompanying consolidated balance sheets. As of December 31, 2015 , the Company’s deferred financing costs were $4.7 million , net of amortization, of which $3.5 million is included in notes and bonds payable, net and $1.2 million is included in prepaid expenses and other assets on the accompanying consolidated balance sheets. As of December 31, 2016 and 2015 , the Company’s interest payable was $5.3 million and $1.2 million , respectively. The following is a schedule of maturities, including principal amortization payments, for all notes and bonds payable outstanding as of December 31, 2016 (in thousands): 2017 $ 402,153 2018 196,253 2019 52,251 2020 132,876 2021 51,241 Thereafter 128,156 $ 962,930 The Company’s notes payable contain financial debt covenants. As of December 31, 2016 , the Company was in compliance with all of these debt covenants. Israeli Bond Financing On March 2, 2016, KBS Strategic Opportunity BVI, a wholly owned subsidiary of the Company, filed a final prospectus with the Israel Securities Authority for a proposed offering of up to 1,000,000,000 Israeli new Shekels of Series A debentures (the “Debentures”) at an annual interest rate not to exceed 4.25% . On March 1, 2016, KBS Strategic Opportunity BVI commenced the institutional tender of the Debentures and accepted application for 842.5 million Israeli new Shekels. On March 7, 2016, KBS Strategic Opportunity BVI commenced the public tender of the Debentures and accepted 127.7 million Israeli new Shekels. In the aggregate, KBS Strategic Opportunity BVI accepted 970.2 million Israeli new Shekels (approximately $249.2 million as of March 8, 2016 ) in both the institutional and public tenders at an annual interest rate of 4.25% . KBS Strategic Opportunity BVI issued the Debentures on March 8, 2016. The terms of the Debentures require principal installment payments equal to 20% of the face value of the Debentures on March 1st of each year from 2019 to 2023. As of December 31, 2016 , the Company incurred legal, rating and underwriting fees of approximately $9.8 million in connection with the offering. In addition, the Company funded interest reserves of 20.8 million Israeli new Shekels (approximately $5.4 million as of December 31, 2016 ) and 1.0 million Israeli new Shekels (approximately $0.3 million as of December 31, 2016 ) of expense reserve required by the Debenture documents. The deed of trust that governs the terms of the Debentures contains various financial covenants. As of December 31, 2016 , the Company was in compliance with all of these financial debt covenants.

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS	DERIVATIVE INSTRUMENTS The Company enters into derivative instruments for risk management purposes to hedge its exposure to cash flow variability caused by changing interest rates and foreign currency exchange rate movements. The primary goal of the Company’s risk management practices related to interest rate risk is to prevent changes in interest rates from adversely impacting the Company’s ability to achieve its investment return objectives. The Company does not enter into derivatives for speculative purposes. The Company enters into foreign currency collars to mitigate its exposure to foreign currency exchange rate movements on its bonds payable outstanding denominated in Israeli new Shekels. The foreign currency collar consists of a purchased call option to buy and a sold put option to sell the Israeli new Shekels. A foreign currency collar guarantees that the exchange rate of the currency will not fluctuate beyond the range of the options’ strike prices. The following table summarizes the notional amount and other information related to the Company’s foreign currency collars as of December 31, 2016 . The notional amount is an indication of the extent of the Company’s involvement in each instrument at that time, but does not represent exposure to credit, interest rate or market risks (currency in thousands): Derivative Instruments Notional Amount Strike Price Trade Date Maturity Date Derivative instruments not designated as hedging instruments Foreign currency collar $ 100,000 3.72 - 3.83 ILS-USD 08/08/2016 08/08/2017 Foreign currency collar 50,000 3.67 - 3.77 ILS-USD 08/16/2016 08/16/2017 Foreign currency collar 50,000 3.68 - 3.78 ILS-USD 08/16/2016 08/16/2017 Foreign currency collar 50,000 3.67 - 3.77 ILS-USD 08/22/2016 08/22/2017 $ 250,000 The Company enters into interest rate caps to mitigate its exposure to rising interest rates on its variable rate notes payable. The values of interest rate caps are primarily impacted by interest rates, market expectations about interest rates, and the remaining life of the instrument. In general, increases in interest rates, or anticipated increases in interest rates, will increase the value of interest rate caps. As the remaining life of an interest rate cap decreases, the value of the instrument will generally decrease towards zero. As of December 31, 2016 , the Company had entered into an interest rate cap with a notional amount of $115.5 million that effectively limits one-month LIBOR at 3.0% effective October 14, 2016 through October 14, 2018. The following table sets forth the fair value of the Company’s derivative instruments as well as their classification on the consolidated balance sheets as of December 31, 2016 (dollars in thousands): December 31, 2016 Derivative Instruments Balance Sheet Location Number of Instruments Fair Value Derivative instruments not designated as hedging instruments Interest rate cap Prepaid expenses and other assets 1 $ 12 Foreign currency collars Other liabilities 4 $ (3,910 ) The change in fair value of foreign currency collars that are not designated as cash flow hedges are recorded as foreign currency transaction gains or losses in the accompanying consolidated statements of operations. During the year ended December 31, 2016 , the Company recognized a $3.9 million loss related to the foreign currency collars, which is shown net against $0.9 million of foreign currency transaction gains in the accompanying consolidated statements of operations as foreign currency transaction loss, net.

FAIR VALUE DISCLOSURES

FAIR VALUE DISCLOSURES	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
FAIR VALUE DISCLOSURES	FAIR VALUE DISCLOSURES Under GAAP, the Company is required to measure certain financial instruments at fair value on a recurring basis. In addition, the Company is required to measure other non-financial and financial assets at fair value on a non-recurring basis (e.g., carrying value of impaired real estate loans receivable and long-lived assets). Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The GAAP fair value framework uses a three-tiered approach. Fair value measurements are classified and disclosed in one of the following three categories: • Level 1: unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities; • Level 2: quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which significant inputs and significant value drivers are observable in active markets; and • Level 3: prices or valuation techniques where little or no market data is available that requires inputs that are both significant to the fair value measurement and unobservable. The fair value for certain financial instruments is derived using valuation techniques that involve significant management judgment. The price transparency of financial instruments is a key determinant of the degree of judgment involved in determining the fair value of the Company’s financial instruments. Financial instruments for which actively quoted prices or pricing parameters are available and for which markets contain orderly transactions will generally have a higher degree of price transparency than financial instruments for which markets are inactive or consist of non-orderly trades. The Company evaluates several factors when determining if a market is inactive or when market transactions are not orderly. The following is a summary of the methods and assumptions used by management in estimating the fair value of each class of financial instruments for which it is practicable to estimate the fair value: Cash and cash equivalents, rent and other receivables and accounts payable and accrued liabilities: These balances approximate their fair values due to the short maturities of these items. Real estate loan receivable: The Company’s real estate loan receivable is presented in the accompanying consolidated balance sheets at its amortized cost net of recorded loan loss reserves and not at fair value. The fair value of real estate loan receivable was estimated using an internal valuation model that considers the expected cash flows for the loans, underlying collateral values (for collateral dependent loans) and estimated yield requirements of institutional investors for loans with similar characteristics, including remaining loan term, loan-to-value, type of collateral and other credit enhancements. The Company classifies these inputs as Level 3 inputs. Real estate debt securities : The Company’s real estate debt securities are presented in the accompanying consolidated balance sheets at their amortized cost net of recorded loss reserves (if any) and not at fair value. The fair value of real estate debt securities was estimated using an internal valuation model that considers the expected cash flows for the loans, underlying collateral values (for collateral dependent loans) and estimated yield requirements of institutional investors for real estate debt securities with similar characteristics, including remaining loan term, loan-to-value, type of collateral and other credit enhancements. The Company classifies these inputs as Level 3 inputs. Notes and bonds payable: The fair values of the Company’s notes and bonds payable are estimated using a discounted cash flow analysis based on management’s estimates of current market interest rates for instruments with similar characteristics, including remaining loan term, loan-to-value ratio, type of collateral and other credit enhancements. Additionally, when determining the fair value of liabilities in circumstances in which a quoted price in an active market for an identical liability is not available, the Company measures fair value using (i) a valuation technique that uses the quoted price of the identical liability when traded as an asset or quoted prices for similar liabilities or similar liabilities when traded as assets or (ii) another valuation technique that is consistent with the principles of fair value measurement, such as the income approach or the market approach. The Company classifies these inputs as Level 3 inputs. The Company’s bonds issued in Israel are publicly traded on the Tel-Aviv Stock Exchange. The Company used the quoted price as of December 31, 2016 for the fair value of its bonds issued in Israel. The Company classifies this input as a Level 1 input. Derivative instruments : The Company’s derivative instruments are presented at fair value on the accompanying consolidated balance sheets. The valuation of these instruments is determined using a proprietary model that utilizes observable inputs. As such, the Company classifies these inputs as Level 2 inputs. The following were the face values, carrying amounts and fair values of the Company’s financial instruments as of December 31, 2016 and December 31, 2015 , which carrying amounts do not approximate the fair values (in thousands): December 31, 2016 December 31, 2015 Face Value Carrying Amount Fair Value Face Value Carrying Amount Fair Value Financial assets: Real estate loan receivable $ — $ — $ — $ 27,850 $ 27,850 $ 27,850 Real estate debt securities $ 5,000 $ 4,683 $ 4,683 $ — $ — $ — Financial liabilities: Notes and bond payable $ 711,119 $ 707,169 $ 711,425 $ 550,796 $ 547,323 $ 554,007 KBS SOR (BVI) Holdings, Ltd. Series A Debentures $ 251,811 $ 243,455 $ 253,120 $ — $ — $ — Disclosure of the fair value of financial instruments is based on pertinent information available to the Company as of the period end and requires a significant amount of judgment. This has made the estimation of fair values difficult and, therefore, both the actual results and the Company’s estimate of value at a future date could be materially different. As of December 31, 2016 , the Company measured the following assets and liabilities at fair value (in thousands): Fair Value Measurements Using Total Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Recurring Basis: Asset derivative - interest rate cap $ 12 $ — $ 12 $ — Liability derivatives - foreign currency collars $ (3,910 ) $ — $ (3,910 ) $ —

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS The Advisory Agreement entitles the Advisor to specified fees upon the provision of certain services with regard to the investment of funds in real estate and real estate-related investments and the disposition of real estate and real estate-related investments (including the discounted payoff of non-performing loans) among other services, as well as reimbursement of certain costs incurred by the Advisor in providing services to the Company. The Advisory Agreement may also entitle the Advisor to certain back-end cash flow participation fees. The Company also entered into a fee reimbursement agreement (the “AIP Reimbursement Agreement”) with KBS Capital Markets Group LLC, the dealer manager for the Company's initial public offering (the "Dealer Manager"), pursuant to which the Company agreed to reimburse the Dealer Manager for certain fees and expenses it incurs for administering the Company’s participation in the Depository Trust & Clearing Corporation Alternative Investment Product Platform with respect to certain accounts of the Company’s investors serviced through the platform. The Advisor and Dealer Manager also serve as the advisor and dealer manager, respectively, for KBS Real Estate Investment Trust, Inc. (“KBS REIT I”), KBS Real Estate Investment Trust II, Inc. (“KBS REIT II”), KBS Real Estate Investment Trust III, Inc. (“KBS REIT III”), KBS Legacy Partners Apartment REIT, Inc. (“KBS Legacy Partners Apartment REIT”), KBS Strategic Opportunity REIT II, Inc. (“KBS Strategic Opportunity REIT II”) and KBS Growth & Income REIT, Inc. (“KBS Growth & Income REIT”). On January 6, 2014, the Company, together with KBS REIT I, KBS REIT II, KBS REIT III, KBS Legacy Partners Apartment REIT, KBS Strategic Opportunity REIT II, the Dealer Manager, the Advisor and other KBS-affiliated entities, entered into an errors and omissions and directors and officers liability insurance program where the lower tiers of coverage are shared. The cost of these lower tiers is allocated by the Advisor and its insurance broker among each of the various entities covered by the plan, and is billed directly to each entity. The allocation of these shared coverage costs is proportionate to the pricing by the insurance marketplace for the first tiers of directors and officers liability coverage purchased individually by each REIT. The Advisor’s and the Dealer Manager’s portion of the shared lower tiers’ cost is proportionate to the respective entities’ prior cost for the errors and omissions insurance. In June 2015, KBS Growth & Income REIT was added to the insurance program at terms similar to those described above. The insurance program was renewed and is effective through June 30, 2017. During the years ended December 31, 2016 , 2015 and 2014 , no other business transactions occurred between the Company and these other KBS-sponsored programs. Pursuant to the terms of these agreements, summarized below are the related-party costs incurred by the Company for the years ended December 31, 2016 , 2015 and 2014 , respectively, and any related amounts payable as of December 31, 2016 and December 31, 2015 (in thousands): Incurred Payable as of December 31, 2016 2015 2014 2016 2015 Expensed Asset management fees (1) $ 9,628 $ 8,348 $ 7,648 $ — $ — Real estate acquisition fees 2,964 — 2,231 — — Reimbursable operating expenses (2) 221 178 157 55 59 Disposition fees (3) 279 276 — — — Capitalized Acquisition fees on real estate debt securities 250 — — — — Acquisition fee on investment in unconsolidated joint venture — — 1,573 — — Acquisition fee on undeveloped land — — 67 — — $ 13,342 $ 8,802 $ 11,676 $ 55 $ 59 _____________________ (1) Amounts include asset management fees from discontinued operations. (2) The Advisor may seek reimbursement for certain employee costs under the Advisory Agreement. The Company has reimbursed the Advisor for the Company’s allocable portion of the salaries, benefits and overhead of internal audit department personnel providing services to the Company. These amounts totaled $153,000 , $153,000 and $141,000 for the years ended December 31, 2016 , 2015 and 2014 , respectively, and were the only employee costs reimbursed under the Advisory Agreement during these periods. The Company will not reimburse for employee costs in connection with services for which the Advisor earns acquisition, origination or disposition fees (other than reimbursement of travel and communication expenses) or for the salaries or benefits the Advisor or its affiliates may pay to the Company’s executive officers. In addition to the amounts above, the Company reimburses the Advisor for certain of the Company’s direct costs incurred from third parties that were initially paid by the Advisor on behalf of the Company. (3) Disposition fees with respect to real estate sold are included in the gain on sale of real estate in the accompanying consolidated statements of operations. Disposition fees with respect to the assignment of the Company's real estate loan receivable are included in general and administrative expenses in the accompanying consolidated statements of operations. During the year ended December 31, 2016 , the Advisor reimbursed the Company $ 0.1 million for property insurance rebates and $ 0.1 million for legal and professional fees and travel expenses.

INVESTMENT IN UNCONSOLIDATED JO

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES	12 Months Ended
	Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES	INVESTMENT IN UNCONSOLIDATED JOINT VENTURES As of December 31, 2016 and 2015 , the Company’s investments in unconsolidated joint ventures were composed of the following (dollars in thousands): Investment Balance at December 31, Joint Venture Number of Properties Location Ownership % 2016 2015 NIP Joint Venture 17 Various Less than 5.0% $ 5,305 $ 5,305 110 William Joint Venture 1 New York, New York 60.0% 70,544 69,132 $ 75,849 $ 74,437 Investment in National Industrial Portfolio Joint Venture On May 18, 2012, the Company, through an indirect wholly owned subsidiary, entered into a joint venture (the “NIP Joint Venture”) with OCM NIP JV Holdings, L.P. and HC KBS NIP JV, LLC (“HC-KBS”). As of December 31, 2016 , the NIP Joint Venture owned 17 industrial properties and a master lease with respect to another industrial property encompassing 8.4 million square feet. The Company made an initial capital contribution of $ 8.0 million which represents less than a 5.0% ownership interest in the NIP Joint Venture as of December 31, 2016 . The Company has virtually no influence over the NIP Joint Venture’s operations, financial policies or decision making. Accordingly, the Company has accounted for its investment in the NIP Joint Venture under the cost method of accounting. Income, losses and distributions from the NIP Joint Venture are generally allocated among the members based on their respective equity interests. KBS REIT I, an affiliate of the Advisor, is a member of HC-KBS and has a participation interest in certain future potential profits generated by the NIP Joint Venture. However, KBS REIT I does not have any equity interest in the NIP Joint Venture. None of the other joint venture partners are affiliated with the Company or the Advisor. As of December 31, 2016 and 2015 , the book value of the Company’s investment in the NIP Joint Venture was $ 5.3 million . During the years ended December 31, 2016 and 2015 , the Company did not receive any distributions related to its investment in the NIP Joint Venture. During the year ended December 31, 2014 , the Company recognized $2.2 million of return of capital from the NIP Joint Venture. Investment in 110 William Joint Venture On December 23, 2013, the Company, through an indirect wholly owned subsidiary, entered into an agreement with SREF III 110 William JV, LLC (the “110 William JV Partner”) to form a joint venture (the “110 William Joint Venture”). On May 2, 2014, the 110 William Joint Venture acquired an office property containing 928,157 rentable square feet located on approximately 0.8 acres of land in New York, New York (“110 William Street”). Each of the Company and the 110 William JV Partner hold a 60% and 40% ownership interest in the 110 William Joint Venture, respectively. On May 2, 2014, in connection with the acquisition of 110 William Street, the 110 William Joint Venture assumed a mortgage loan (the “110 William Street Existing Loans”). Subsequent to December 31, 2016 , the 110 William Joint Venture closed the refinancing of the 110 William Street Existing Loans. See note 16 , “Subsequent Events.” The Company exercises significant influence over the operations, financial policies and decision making with respect to the 110 William Joint Venture but significant decisions require approval from both members. Accordingly, the Company has accounted for its investment in the 110 William Joint Venture under the equity method of accounting. Income, losses, contributions and distributions are generally allocated based on the members’ respective equity interests. As of December 31, 2016 and 2015 , the book value of the Company’s investment in the 110 William Joint Venture was $70.5 million and $69.1 million , respectively, which includes $1.5 million and $1.6 million of unamortized acquisition fees and expenses incurred directly by the Company, respectively. Summarized financial information for the 110 William Joint Venture follows (in thousands): (Unaudited) December 31, 2016 (Unaudited) December 31, 2015 Assets: Real estate assets, net of accumulated depreciation and amortization $ 262,192 $ 269,664 Other assets 23,355 18,973 Total assets $ 285,547 $ 288,637 Liabilities and Equity: Notes payable, net (1) $ 157,628 $ 162,395 Other liabilities 12,872 13,617 Partners’ capital 115,047 112,625 Total Liabilities and Equity $ 285,547 $ 288,637 _____________________ (1) Includes (i) a first mortgage loan with an outstanding principal balance of $136.4 million and $138.6 million as of December 31, 2016 and December 31, 2015 , respectively, bearing interest at a fixed rate of 4.8% per annum and maturing on July 6, 2017 and (ii) a mezzanine loan with an outstanding principal balance of $20.0 million as of December 31, 2016 and December 31, 2015 bearing interest at a fixed rate of 9.5% per annum and maturing on July 6, 2017. The amount presented includes a premium on notes payable of $1.5 million and $4.5 million as of December 31, 2016 and 2015 , respectively, and deferred financing costs, net of $0.2 million and $0.7 million as of December 31, 2016 and 2015 , respectively. (Unaudited) For the Years Ended December 31, 2016 2015 2014 Revenues $ 33,458 $ 34,188 $ 22,536 Expenses: Operating, maintenance, and management 10,778 10,549 6,869 Real estate taxes and insurance 6,017 5,748 3,476 Real estate acquisition fees and expenses — 1 1,016 Depreciation and amortization 12,955 12,596 8,806 Interest expense 6,049 6,170 4,193 Total expenses 35,799 35,064 24,360 Total other income 63 334 36 Net loss $ (2,278 ) $ (542 ) $ (1,788 ) Company ’ s equity in loss of unconsolidated joint venture $ (1,408 ) $ (368 ) $ (1,101 )

UNAUDITED PRO FORMA FINANCIAL I

UNAUDITED PRO FORMA FINANCIAL INFORMATION	12 Months Ended
	Dec. 31, 2016
Business Acquisition, Pro Forma Information [Abstract]
UNAUDITED PRO FORMA FINANCIAL INFORMATION	UNAUDITED PRO FORMA FINANCIAL INFORMATION The Company acquired one office portfolio and one office property during the year ended December 31, 2016 , which were accounted for as business combinations. The following unaudited pro forma information for the years ended December 31, 2016 and 2015 has been prepared to give effect to the acquisition of the Westpark Portfolio and 353 Sacramento as if the acquisitions occurred on January 1, 2015. This pro forma information does not purport to represent what the actual results of operations of the Company would have been had the acquisitions occurred on this date, nor does it purport to predict the results of operations for future periods (in thousands). For the Years Ended December 31, 2016 2015 Revenues $ 144,674 $ 134,612 Depreciation and amortization $ 56,604 $ 53,879 Net (loss) income $ (25,298 ) $ 7,764 The unaudited pro forma information for the years ended December 31, 2016 and 2015 was adjusted to exclude $3.5 million of acquisition costs related to the Westpark Portfolio and 353 Sacramento incurred by the Company in 2016 .

SELECTED QUARTERLY FINANCIAL DA

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)	SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) Presented below is a summary of the unaudited quarterly financial information for the years ended December 31, 2016 and 2015 (in thousands, except per share amounts): 2016 First Quarter Second Quarter Third Quarter Fourth Quarter Revenues $ 28,365 $ 33,866 $ 36,133 $ 35,880 Net loss $ (4,932 ) $ (1,989 ) $ (15,007 ) $ (7,198 ) Net loss attributable to common stockholders $ (4,894 ) $ (1,959 ) $ (14,951 ) $ (7,114 ) Net loss per common share, basic and diluted $ (0.08 ) $ (0.03 ) $ (0.25 ) $ (0.12 ) Distributions declared per common share $ 0.093 $ 0.093 $ 0.094 $ 0.095 2015 First Quarter Second Quarter Third Quarter Fourth Quarter Revenues $ 27,943 $ 28,667 $ 28,158 $ 27,360 Net income (loss) $ 5,385 $ 2,639 $ (277 ) $ (682 ) Net income (loss) attributable to common stockholders $ 2,235 $ 1,526 $ (462 ) $ (922 ) Net income (loss) per common share, basic and diluted $ 0.04 $ 0.03 $ (0.01 ) $ (0.02 ) Distributions declared per common share $ 0.092 $ 0.093 $ 0.095 $ 0.095

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Economic Dependency The Company is dependent on the Advisor for certain services that are essential to the Company, including the identification, evaluation, negotiation, origination, acquisition and disposition of investments; management of the daily operations of the Company’s investment portfolio; and other general and administrative responsibilities. In the event that the Advisor is unable to provide these services, the Company will be required to obtain such services from other sources. Environmental As an owner of real estate, the Company is subject to various environmental laws of federal, state and local governments. Although there can be no assurance, the Company is not aware of any environmental liability that could have a material adverse effect on its financial condition or results of operations as of December 31, 2016 . However, changes in applicable environmental laws and regulations, the uses and conditions of properties in the vicinity of the Company’s properties, the activities of its tenants and other environmental conditions of which the Company is unaware with respect to the properties could result in future environmental liabilities. Legal Matters From time to time, the Company is a party to legal proceedings that arise in the ordinary course of its business. Management is not aware of any legal proceedings of which the outcome is probable or reasonably possible to have a material adverse effect on the Company’s results of operations or financial condition, which would require accrual or disclosure of the contingency and the possible range of loss. Additionally, the Company has not recorded any loss contingencies related to legal proceedings in which the potential loss is deemed to be remote.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS The Company evaluates subsequent events up until the date the consolidated financial statements are issued. Acquisition and Financing of Crown Pointe On February 14, 2017, the Company, through an indirect wholly owned subsidiary (the "Buyer"), acquired an office property consisting of two office buildings containing an aggregate of 499,968 rentable square feet in Dunwoody, Georgia (“Crown Pointe”). The seller is not affiliated with the Company or the Advisor. The purchase price of Crown Pointe was $83.4 million plus closing costs. The Company funded the purchase of Crown Pointe with proceeds from its offering of Series A debentures to investors in Israel and proceeds from the Crown Pointe Mortgage Loan (defined below). The Company is in process of assessing the fair value of the acquired tangible assets and any applicable intangible assets and liabilities for this asset acquisition. Crown Pointe is comprised of two office buildings that were built in 1985 and 1989 and were 72% leased to 59 tenants with a weighted-average remaining lease term of 3.5 years at acquisition. On February 14, 2017, in connection with the acquisition of Crown Pointe, the Buyer entered into a loan agreement with an unaffiliated lender (the “Lender”) for borrowings of up to $62.5 million , secured by Crown Pointe (the “Crown Pointe Mortgage Loan”). At closing, $50.5 million of the Crown Pointe Mortgage Loan was funded. Of the remaining $12.0 million available under the Crown Pointe Mortgage Loan, $9.5 million is available for future disbursements to be used for tenant improvements and leasing commissions and $2.5 million is available as an earn-out advance, subject to certain terms and conditions contained in the loan documents. The Crown Pointe Mortgage Loan matures on February 13, 2020, with two 12 -month extension options, subject to certain terms and conditions contained in the loan documents and the payment of an extension fee. The Crown Pointe Mortgage Loan bears interest at a floating rate of 2.6% over one-month LIBOR. In addition, the Company entered into an interest rate cap that effectively limits one-month LIBOR on $46.9 million of the outstanding loan balance at 3.0% effective February 21, 2017 through February 13, 2020. Monthly payments are interest only during the initial term with the entire unpaid principal balance and all outstanding interest and fees due at maturity. KBS SOR Properties, LLC, a separate wholly owned subsidiary of the Company through which the Company indirectly owns all of its real estate assets (“KBS SOR Properties”), provided a guaranty of 25% of the outstanding principal balance of the Crown Pointe Mortgage Loan, which guaranty amount can be reduced to zero upon certain conditions being met. KBS SOR Properties provided a guaranty of the Crown Pointe Mortgage Loan with respect to certain potential deficiencies, losses or damages suffered by the lender resulting from certain intentional acts committed by the Buyer or KBS SOR Properties in violation of the loan documents. KBS SOR Properties also provided a guaranty of the principal balance and any interest or other sums outstanding under the Crown Pointe Mortgage Loan in the event of certain bankruptcy or insolvency proceedings involving the Buyer. 110 William Street Refinancing On May 2, 2014, in connection with the acquisition of 110 William Street, the 110 William Joint Venture assumed a mortgage loan with a face amount of $141.5 million and a mezzanine loan with a face amount of $20.0 million (the “110 William Street Existing Loans”). On March 6, 2017, the 110 William Joint Venture closed the refinancing of the 110 William Street Existing Loans (the “Refinancing”). The 110 William Joint Venture repaid $156.0 million of principal related to the 110 William Street Existing Loans. The Refinancing was comprised of the following loans from unaffiliated lenders: (i) a mortgage loan in the maximum amount of up to $232.3 million from Morgan Stanley Bank, N.A., a national banking association (the “110 William Street Mortgage Loan”), (ii) a senior mezzanine loan in the maximum amount of up to $33.8 million from Morgan Stanley Mortgage Capital Holdings LLC, a New York limited liability company (the “110 William Street Senior Mezzanine Loan”), and (iii) a junior mezzanine loan in the maximum amount of up to $33.8 million from Morgan Stanley Mortgage Capital Holdings LLC, a New York limited liability company (the “110 William Street Junior Mezzanine Loan”). The loans under the Refinancing mature on March 7, 2019, with three one -year extension options. The 110 William Street Mortgage Loan bears interest at a floating rate of 2.2472% over one-month LIBOR. The 110 William Street Senior Mezzanine Loan and the 110 William Street Junior Mezzanine Loan bear interest at a floating rate of 6.25% over one-month LIBOR. The 110 William Joint Venture entered into three interest rate caps that effectively limit one-month LIBOR at 3.00% on $275.0 million of the Refinancing amount as of the effective date, up to $300.0 million , accreting according to a notional schedule, effective March 6, 2017 through March 7, 2019. The loans under the Refinancing have monthly payments that are interest-only with the entire unpaid principal balance and all outstanding interest and fees due at maturity. The 110 William Joint Venture has the right to prepay the loans in whole at any time or in part from time to time to the extent necessary, subject to the payment of certain expenses potentially incurred by the lender as a result of the prepayment, the payment of a prepayment premium and breakage costs in certain circumstances, and certain other conditions contained in the loan documents. At closing, $205.0 million had been disbursed from the 110 William Street Mortgage Loan to the 110 William Joint Venture with $27.3 million remaining available for future disbursements to be used for tenant improvements, leasing commissions and capital improvements, subject to certain terms and conditions contained in the loan documents. At closing, $29.85 million had been disbursed from the 110 William Street Senior Mezzanine Loan to the 110 William Joint Venture and $29.85 million had been disbursed from the 110 William Junior Mezzanine Loan to the 110 William Joint Venture, with $4.0 million remaining available under the 110 William Street Senior Mezzanine Loan and $4.0 million remaining available under the 110 William Street Junior Mezzanine Loan for future disbursements to be used for tenant improvements, leasing commissions and capital improvements, subject to certain terms and conditions contained in the loan documents under the 110 William Street Senior Mezzanine Loan and the 110 William Street Junior Mezzanine Loan. Distribution Declared On March 9, 2017, the Company's board of directors authorized a distribution in the amount of $0.09246575 per share of common stock to stockholders of record as of the close of business on March 13, 2017. The Company expects to pay this distribution on March 16, 2017.

SCHEDULE III REAL ESTATE ASSETS

SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION	12 Months Ended
	Dec. 31, 2016
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION	SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION December 31, 2016 (dollar amounts in thousands) Initial Cost to Company Gross Amount at which Carried at Close of Period Description Location Ownership Percent Encumbrances Land Building and Improvements (1) Total Cost Capitalized Subsequent to Acquisition (2) Land Building and Improvements (1) Total (3) Accumulated Depreciation and Amortization Original Date of Construction Date Properties Held for Investment Northridge Center I & II Atlanta, GA 100.0% (4) $ 2,234 $ 4,457 $ 6,691 $ 3,038 $ 2,234 $ 7,495 $ 9,729 $ (2,509 ) 1985/1989 03/25/2011 Iron Point Business Park Folsom, CA 100.0% (5) 2,671 16,576 19,247 2,939 2,671 19,515 22,186 (4,914 ) 1999/2001 06/21/2011 Richardson Portfolio Palisades Central I Richardson, TX 90.0% (6) 1,037 8,628 9,665 2,289 1,037 10,917 11,954 (2,605 ) 1980 11/23/2011 Palisades Central II Richardson, TX 90.0% (6) 810 17,117 17,927 1,066 810 18,183 18,993 (4,432 ) 1985 11/23/2011 Greenway I Richardson, TX 90.0% (6) 561 1,170 1,731 1,193 561 2,363 2,924 (691 ) 1983 11/23/2011 Greenway III Richardson, TX 90.0% (6) 702 4,083 4,785 185 702 4,268 4,970 (1,481 ) 1983 11/23/2011 Undeveloped Land Richardson, TX 90.0% (6) 1,997 — 1,997 1,137 3,134 — 3,134 — N/A 11/23/2011 Total Richardson Portfolio 40,594 5,107 30,998 36,105 5,870 6,244 35,731 41,975 (9,209 ) Park Highlands North Las Vegas, NV (7) — 20,307 — 20,307 13,855 34,162 — 34,162 — N/A 12/30/2011 Bellevue Technology Center Bellevue, WA 100.0% 59,400 25,506 52,411 77,917 7,980 25,506 60,391 85,897 (10,810 ) 1973-2000 07/31/2012 Powers Ferry Landing East Atlanta, GA 100.0% (4) 1,643 3,761 5,404 4,354 1,643 8,115 9,758 (2,393 ) 1980/1982/1985 09/24/2012 1800 West Loop Houston, TX 100.0% (5) 8,360 59,292 67,652 5,971 8,360 65,263 73,623 (12,894 ) 1982 12/04/2012 West Loop I & II Houston, TX 100.0% (4) 7,300 29,742 37,042 4,362 7,300 34,104 41,404 (5,921 ) 1980/1981 12/07/2012 Burbank Collection Burbank, CA 90.0% 9,812 4,175 8,799 12,974 3,016 4,175 11,815 15,990 (1,721 ) 2008 12/12/2012 Austin Suburban Portfolio Austin, TX 100.0% (4) 8,288 67,745 76,033 2,471 8,288 70,216 78,504 (10,533 ) 1985/1986/2000 03/28/2013 Westmoor Center Westminster, CO 100.0% 62,000 10,058 73,510 83,568 (1,178 ) 10,058 72,332 82,390 (12,022 ) 1998/1999 06/12/2013 Central Building Seattle, WA 100.0% 27,600 7,015 26,124 33,139 2,232 7,015 28,356 35,371 (4,013 ) 1907 07/10/2013 50 Congress Street Boston, MA 100.0% 31,525 9,876 43,455 53,331 348 9,876 43,803 53,679 (6,747 ) 1910/1915 07/11/2013 1180 Raymond Newark, NJ 100.0% 6,635 8,292 37,651 45,943 (109 ) 8,292 37,542 45,834 (3,925 ) 1929 08/20/2013 Park Highlands II (8) North Las Vegas, NV 100.0% — 20,118 — 20,118 3,346 23,464 — 23,464 — N/A 12/10/2013 Maitland Promenade II Orlando, FL 100.0% 20,877 3,434 27,282 30,716 960 3,434 28,242 31,676 (4,516 ) 2001 12/18/2013 Plaza Buildings Bellevue, WA 100.0% 109,866 53,040 133,157 186,197 13,044 53,040 146,201 199,241 (18,448 ) 1978/1983 01/14/2014 424 Bedford Brooklyn, NY 90.0% 24,832 8,860 24,820 33,680 678 8,860 25,498 34,358 (2,049 ) 2010 01/31/2014 Richardson Land II Richardson, TX 90.0% — 3,096 — 3,096 322 3,418 — 3,418 — N/A 09/04/2014 Westpark Portfolio Redmond, WA 100.0% 83,200 36,085 90,227 126,312 3,246 36,085 93,473 129,558 (4,550 ) 1984-1992 05/10/2016 353 Sacramento San Francisco, CA 100.0% 85,500 58,374 115,696 174,070 920 58,374 116,616 174,990 (3,002 ) 1982 07/11/2016 Total Properties Held for Investment $ 303,839 $ 845,703 $ 1,149,542 $ 77,665 $ 322,499 $ 904,708 $ 1,227,207 $ (120,176 ) ____________________ (1) Building and improvements include tenant origination and absorption costs. (2) Costs capitalized subsequent to acquisition is net of write-offs of fully depreciated/amortized assets. (3) The aggregate cost of real estate for federal income tax purposes was $1.3 billion (unaudited) as of December 31, 2016 . (4) As of December 31, 2016 , $106.5 million of debt was outstanding secured by Northridge Center I & II, Powers Ferry Landing East, West Loop I & II and the Austin Suburban Portfolio. (5) As of December 31, 2016 , $11.8 million of debt was outstanding secured by 1800 West Loop and Iron Point Business Park. (6) As of December 31, 2016 , $40.6 million of debt was outstanding secured by the Richardson Portfolio. KBS STRATEGIC OPPORTUNITY REIT, INC. SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION (CONTINUED) December 31, 2016 (dollar amounts in thousands) (7) On March 18, 2016, the Company increased its membership interest in the Park Highlands joint venture from 50.1% to 51.58% by acquiring an additional 1.48% membership interest from one of the joint venture partners. On June 6, 2016, the Company increased its membership interest in the Park Highlands joint venture from 51.58% to 97.62% by acquiring an additional 46.04% membership interest from one of the joint venture partners. On June 25, 2016, the Company increased its membership interest in the Park Highlands joint venture from 97.62% to 100% by acquiring the remaining 2.38% membership interest from the remaining joint venture partner. On September 7, 2016, a subsidiary of the Company that owns a portion of Park Highlands, sold 820 units of 10% Class A non-voting preferred membership units for $0.8 million to accredited investors. The amount of the Class A non-voting preferred membership units raised, net of offering costs, is included in other liabilities on the accompanying consolidated balance sheets. (8) On March 18, 2016, the Company increased its membership interest in the Park Highlands II joint venture from 99.5% to 100% by acquiring the remaining 0.5% membership interest from its joint venture partner. SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION (CONTINUED) December 31, 2016 (dollar amounts in thousands) 2016 2015 2014 Real Estate (1) : Balance at the beginning of the year $ 914,074 $ 919,259 $ 668,018 Acquisitions (2) 300,382 — 227,339 Improvements 33,909 32,385 36,942 Write-off of fully depreciated and fully amortized assets (19,220 ) (13,212 ) (10,362 ) Impairments — — (697 ) Loss due to property damages (1,938 ) (2,260 ) (707 ) Sales — (22,098 ) (1,274 ) Balance at the end of the year $ 1,227,207 $ 914,074 $ 919,259 Accumulated depreciation and amortization (1) : Balance at the beginning of the year $ 91,560 $ 64,171 $ 29,859 Depreciation and amortization expense 47,836 41,513 44,848 Write-off of fully depreciated and fully amortized assets (19,220 ) (13,212 ) (10,362 ) Impairments — — (118 ) Sales — (912 ) (56 ) Balance at the end of the year $ 120,176 $ 91,560 $ 64,171 ____________________ (1) Amounts include real estate held for sale. (2) Acquisitions includes properties which the Company acquired through foreclosure on or to which it otherwise received title.

SUMMARY OF SIGNIFICANT ACCOUN26

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Principles of Consolidation and Basis of Presentation	The consolidated financial statements include the accounts of the Company, REIT Holdings, the Operating Partnership and their direct and indirect wholly owned subsidiaries, and joint ventures in which the Company has a controlling interest. All significant intercompany balances and transactions are eliminated in consolidation. The consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) as contained within the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) and the rules and regulations of the SEC.
Use of Estimates	The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates.
Reclassifications	Certain amounts in the Company’s prior period consolidated financial statements have been reclassified to conform to the current period presentation. These reclassifications have not changed the results of operations of prior periods. During the year ended December 31, 2016 , the Company elected to early adopt ASU No. 2016-18 (as defined below). As a result, the Company no longer presents transfers between cash and restricted cash in the consolidated statements of cash flows. Instead, restricted cash is included with cash and cash equivalents when reconciling the beginning of period and end of period total amounts shown on the consolidated statements of cash flows.
Revenue Recognition, Real Estate	The Company recognizes minimum rent, including rental abatements, lease incentives and contractual fixed increases attributable to operating leases, on a straight-line basis over the term of the related leases when collectibility is reasonably assured and records amounts expected to be received in later years as deferred rent receivable. If the lease provides for tenant improvements, the Company determines whether the tenant improvements, for accounting purposes, are owned by the tenant or the Company. When the Company is the owner of the tenant improvements, the tenant is not considered to have taken physical possession or have control of the physical use of the leased asset until the tenant improvements are substantially completed. When the tenant is the owner of the tenant improvements, any tenant improvement allowance (including amounts that can be taken in the form of cash or a credit against the tenant’s rent) that is funded is treated as a lease incentive and amortized as a reduction of revenue over the lease term. Tenant improvement ownership is determined based on various factors including, but not limited to: • whether the lease stipulates how a tenant improvement allowance may be spent; • whether the amount of a tenant improvement allowance is in excess of market rates; • whether the tenant or landlord retains legal title to the improvements at the end of the lease term; • whether the tenant improvements are unique to the tenant or general-purpose in nature; and • whether the tenant improvements are expected to have any residual value at the end of the lease. The Company records property operating expense reimbursements due from tenants for common area maintenance, real estate taxes, and other recoverable costs in the period the related expenses are incurred. The Company makes estimates of the collectibility of its tenant receivables related to base rents, including deferred rent, expense reimbursements and other revenue or income. Management specifically analyzes accounts receivable, deferred rents receivable, historical bad debts, customer creditworthiness, current economic trends and changes in customer payment terms when evaluating the adequacy of the allowance for doubtful accounts. In addition, with respect to tenants in bankruptcy, management makes estimates of the expected recovery of pre-petition and post-petition claims in assessing the estimated collectibility of the related receivable. In some cases, the ultimate resolution of these claims can exceed one year. When a tenant is in bankruptcy, the Company will record a bad debt reserve for the tenant’s receivable balance and generally will not recognize subsequent rental revenue until cash is received or until the tenant is no longer in bankruptcy and has the ability to make rental payments.
Revenue Recognition, Real Estate Loans Receivable	Interest income on the Company’s real estate loans receivable is recognized on an accrual basis over the life of the investment using the interest method. Direct loan origination or acquisition fees and costs, as well as acquisition premiums or discounts, are amortized over the term of the loan as an adjustment to interest income. The Company places loans on non-accrual status when any portion of principal or interest is 90 days past due, or earlier when concern exists as to the ultimate collection of principal or interest. When a loan is placed on non-accrual status, the Company reserves for any unpaid accrued interest and generally does not recognize subsequent interest income until cash is received, or the loan returns to accrual status. The Company will resume the accrual of interest if it determines the collection of interest, according to the contractual terms of the loan, is probable. The Company generally recognizes income on impaired loans on either a cash basis, where interest income is only recorded when received in cash, or on a cost-recovery basis, where all cash receipts are applied against the carrying value of the loan. The Company considers the collectibility of the loan’s principal balance in determining whether to recognize income on impaired loans on a cash basis or a cost-recovery basis. The Company will recognize interest income on loans purchased at discounts to face value where the Company expects to collect less than the contractual amounts due under the loan when that expectation is due, at least in part, to the credit quality of the borrower. Income is recognized at an interest rate equivalent to the estimated yield on the loan, as calculated using the carrying value of the loan and the expected cash flows. Changes in estimated cash flows are recognized through an adjustment to the yield on the loan on a prospective basis. Projecting cash flows for these types of loans requires a significant amount of assumptions and judgment, which may have a significant impact on the amount and timing of revenue recognized on these investments. The Company recognizes interest income on non-performing loans on a cash basis or cost-recovery basis since these loans generally do not have an estimated yield and collection of principal and interest is not assured.
Revenue Recognition, Real Estate Debt Securities	Interest income on the Company’s real estate debt securities is recognized on an accrual basis over the life of the investment using the interest method. Direct origination or acquisition fees and costs, as well as acquisition premiums or discounts, are amortized over the term of the securities as an adjustment to interest income. Income is recognized at an interest rate equivalent to the estimated yield on the real estate debt security, as calculated using the carrying value of the real estate debt security and the expected cash flows. Changes in estimated cash flows are recognized through an adjustment to the yield on the real estate debt security on a prospective basis. Projecting cash flows for these types of real estate debt securities requires a significant amount of assumptions and judgment, which may have a significant impact on the amount and timing of revenue recognized on these investments. The Company places real estate debt securities on nonaccrual status when any portion of principal or interest is 90 days past due, or earlier when concern exists as to the ultimate collection of principal or interest. When a real estate debt security is placed on nonaccrual status, the Company reserves for any unpaid accrued interest and generally does not recognize subsequent interest income until cash is received, or the real estate debt security returns to accrual status. The Company will resume the accrual of interest if it determines that the collection of interest, according to the contractual terms of the real estate debt security, is probable.
Revenue Recognition, Cash and Cash Equivalents	The Company recognizes interest income on its cash and cash equivalents as it is earned and records such amounts as other interest income.
Real Estate, Depreciation and Amortization	Real estate costs related to the acquisition and improvement of properties are capitalized and amortized over the expected useful life of the asset on a straight-line basis. Repair and maintenance costs are charged to expense as incurred and significant replacements and betterments are capitalized. Repair and maintenance costs include all costs that do not extend the useful life of the real estate asset. The Company considers the period of future benefit of an asset to determine its appropriate useful life. Expenditures for tenant improvements are capitalized and amortized over the shorter of the tenant’s lease term or expected useful life. The Company anticipates the estimated useful lives of its assets by class to be generally as follows: Buildings 25-40 years Building improvements 10-40 years Tenant improvements Shorter of lease term or expected useful life Tenant origination and absorption costs Remaining term of related leases, including below-market renewal periods
Real Estate, Real Estate Acquisition Valuation	The Company records the acquisition of income-producing real estate or real estate that will be used for the production of income as a business combination. All assets acquired and liabilities assumed in a business combination are measured at their acquisition-date fair values. Acquisition costs are expensed as incurred and restructuring costs that do not meet the definition of a liability at the acquisition date are expensed in periods subsequent to the acquisition date. Real estate obtained in satisfaction of a loan is recorded at the estimated fair value of the real estate (net of liabilities assumed) or the fair value of the loan satisfied if more clearly evident. The excess of the carrying value of the loan over the fair value of the property is charged-off against the reserve for loan losses when title to the property is obtained. Costs of holding the property are expensed as incurred in the Company’s consolidated statements of operations. Intangible assets include the value of in-place leases, which represents the estimated value of the net cash flows of the in-place leases to be realized, as compared to the net cash flows that would have occurred had the property been vacant at the time of acquisition and subject to lease-up. Acquired in-place lease value will be amortized to expense over the average remaining terms of the respective in-place leases, including any below-market renewal periods. The Company assesses the acquisition date fair values of all tangible assets, identifiable intangibles and assumed liabilities using methods similar to those used by independent appraisers, generally utilizing a discounted cash flow analysis that applies appropriate discount and/or capitalization rates and available market information. Estimates of future cash flows are based on a number of factors, including historical operating results, known and anticipated trends, and market and economic conditions. The fair value of tangible assets of an acquired property considers the value of the property as if it were vacant. The Company records above-market and below-market in-place lease values for acquired properties based on the present value (using a discount that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) management’s estimate of fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining non-cancelable term of above-market in-place leases and for the initial term plus any extended term for any leases with below-market renewal options. The Company amortizes any recorded above-market or below-market lease values as a reduction or increase, respectively, to rental income over the remaining non-cancelable terms of the respective lease, including any below-market renewal periods. The Company estimates the value of tenant origination and absorption costs by considering the estimated carrying costs during hypothetical expected lease up periods, considering current market conditions. In estimating carrying costs, the Company includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods. The Company amortizes the value of tenant origination and absorption costs to depreciation and amortization expense over the remaining non-cancelable term of the leases. Estimates of the fair values of the tangible assets, identifiable intangibles and assumed liabilities require the Company to make significant assumptions to estimate market lease rates, property-operating expenses, carrying costs during lease-up periods, discount rates, market absorption periods, and the number of years the property will be held for investment. The use of inappropriate assumptions would result in an incorrect valuation of the Company’s acquired tangible assets, identifiable intangibles and assumed liabilities, which would impact the amount of the Company’s net income. Direct investments in undeveloped land or properties without leases in place at the time of acquisition are accounted for as an asset acquisition and not as a business combination. Acquisition fees and expenses are capitalized into the cost basis of an asset acquisition. Additionally, during the time in which the Company is incurring costs necessary to bring these investments to their intended use, certain costs such as legal fees, real estate taxes and insurance and financing costs are also capitalized.
Real Estate, Impairments of Real Estate and Related Intangible Assets and Liabilities	The Company continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets and liabilities may not be recoverable or realized. When indicators of potential impairment suggest that the carrying value of real estate and related intangible assets and liabilities may not be recoverable, the Company assesses the recoverability by estimating whether the Company will recover the carrying value of the real estate and related intangible assets and liabilities through its undiscounted future cash flows and its eventual disposition. If, based on this analysis, the Company does not believe that it will be able to recover the carrying value of the real estate and related intangible assets and liabilities, the Company would record an impairment loss to the extent that the carrying value exceeds the estimated fair value of the real estate and related intangible assets and liabilities. The Company did not record any impairment losses on its real estate and related intangible assets and liabilities during the years ended December 31, 2016 and 2015 . During the year ended December 31, 2014 , the Company recorded an impairment charge of $ 0.6 million with respect to one real estate property, which was sold on September 10, 2015. Projecting future cash flows involves estimating expected future operating income and expenses related to the real estate and its related intangible assets and liabilities as well as market and other trends. Using inappropriate assumptions to estimate cash flows could result in incorrect fair values of the real estate and its related intangible assets and liabilities and could result in the overstatement of the carrying values of the Company’s real estate and related intangible assets and liabilities and an overstatement of its net income.
Real Estate, Insurance Proceeds for Property Damages	The Company maintains an insurance policy that provides coverage for property damages and business interruption. Losses due to physical damages are recognized during the accounting period in which they occur, while the amount of monetary assets to be received from the insurance policy is recognized when receipt of insurance recoveries is probable. Losses, which are reduced by the related probable insurance recoveries, are recorded as operating, maintenance and management expenses on the accompanying consolidated statements of operations. Anticipated proceeds in excess of recognized losses would be considered a gain contingency and recognized when the contingency related to the insurance claim has been resolved. Anticipated recoveries for lost rental revenue due to property damages are also considered to be a gain contingency and recognized when the contingency related to the insurance claim has been resolved.
Real Estate, Real Estate Held for Sale and Discontinued Operations	The Company generally considers real estate to be “held for sale” when the following criteria are met: (i) management commits to a plan to sell the property, (ii) the property is available for sale immediately, (iii) the property is actively being marketed for sale at a price that is reasonable in relation to its current fair value, (iv) the sale of the property within one year is considered probable and (v) significant changes to the plan to sell are not expected. Real estate that is held for sale and its related assets are classified as “real estate held for sale” and “assets related to real estate held for sale,” respectively, for all periods presented in the accompanying consolidated financial statements. Notes payable and other liabilities related to real estate held for sale are classified as “notes payable related to real estate held for sale” and “liabilities related to real estate held for sale,” respectively, for all periods presented in the accompanying consolidated financial statements. Real estate classified as held for sale is no longer depreciated and is reported at the lower of its carrying value or its estimated fair value less estimated costs to sell. Additionally, with respect to properties that were classified as held for sale in financial statements prior to January 1, 2014, the Company records the operating results and related gains (losses) on sale as discontinued operations for all periods presented if the operations have been or are expected to be eliminated and the Company will not have any significant continuing involvement in the operations of the property following the sale. Operating results and related gains (losses) on sale of properties that were disposed of or classified as held for sale in the ordinary course of business during the years ended December 31, 2015 and 2014 that had not been classified as held for sale in financial statements prior to January 1, 2014 are included in continuing operations on the Company’s consolidated statements of operations.
Loans Receivables and Loan Loss Reserves	The Company’s real estate loans receivable are recorded at amortized cost, net of loan loss reserves (if any), and evaluated for impairment at each balance sheet date. The amortized cost of a real estate loan receivable is the outstanding unpaid principal balance, net of unamortized acquisition premiums or discounts and unamortized costs and fees directly associated with the origination or acquisition of the loan. The amount of impairment, if any, will be measured by comparing the amortized cost of the loan to the present value of the expected cash flows discounted at the loan’s effective interest rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent and collection of principal and interest is not assured. If a loan is deemed to be impaired, the Company will record a loan loss reserve and a provision for loan losses to recognize impairment. As of December 31, 2016 , there was no loan loss reserve and the Company did not record any impairment losses related to its real estate loans receivable during the years ended December 31, 2016 , 2015 and 2014 . The reserve for loan losses is a valuation allowance that reflects management’s estimate of loan losses inherent in the loan portfolio as of the balance sheet date. The reserve is adjusted through “Provision for loan losses” on the Company’s consolidated statements of operations and is decreased by charge-offs to specific loans when losses are confirmed. The Company considers a loan to be impaired when, based upon current information and events, it believes that it is probable that the Company will be unable to collect all amounts due under the contractual terms of the loan agreement. If the Company purchases a loan at a discount to face value and at the acquisition date the Company expects to collect less than the contractual amounts due under the terms of the loan based, at least in part, on the Company’s assessment of the credit quality of the borrower, the Company will consider such a loan to be impaired when, based upon current information and events, it believes that it is probable that the Company will be unable to collect all amounts the Company estimated to be collected at the time of acquisition. The Company also considers a loan to be impaired if it grants the borrower a concession through a modification of the loan terms or if it expects to receive assets (including equity interests in the borrower) with fair values that are less than the carrying value of the loan in satisfaction of the loan. A reserve is established when the present value of payments expected to be received, observable market prices, the estimated fair value of the collateral (for loans that are dependent on the collateral for repayment) or amounts expected to be received in satisfaction of a loan are lower than the carrying value of that loan. Failure to recognize impairments would result in the overstatement of earnings and the carrying value of the Company’s real estate loans held for investment. Actual losses, if any, could significantly differ from estimated amounts.
Real Estate Debt Securities	The Company classifies its investment in real estate debt securities as held to maturity as the Company has the intent and ability to hold this investment until maturity. The Company’s real estate debt securities are recorded at amortized cost, net of other-than-temporary impairment (if any), and evaluated for other-than-temporary impairment at each balance sheet date. The amortized cost of a real estate debt security is the outstanding unpaid principal balance, net of unamortized acquisition premiums or discounts and unamortized costs and fees directly associated with the origination or acquisition of the real estate debt security. The amount of other-than-temporary impairment, if any, will be measured by comparing the amortized cost of the real estate debt security to the present value of the expected cash flows discounted at the real estate debt security’s effective interest rate, the real estate debt security’s observable market price, or the fair value of the collateral if the real estate debt security is collateral dependent and collection of principal and interest is not assured. If a real estate debt security is deemed to be other-than-temporarily impaired, the Company will record an other-than-temporary impairment on the consolidated statements of operations. As of December 31, 2016 , the Company did not record any other-than-temporary impairment losses related to its real estate debt securities during the year ended December 31, 2016
Investment in Unconsolidated Joint Venture, Equity Method	The Company accounts for investments in unconsolidated joint venture entities in which the Company may exercise significant influence over, but does not control, using the equity method of accounting. Under the equity method, the investment is initially recorded at cost and subsequently adjusted to reflect additional contributions or distributions and the Company’s proportionate share of equity in the joint venture’s income (loss). The Company recognizes its proportionate share of the ongoing income or loss of the unconsolidated joint venture as equity in income (loss) of unconsolidated joint venture on the consolidated statements of operations. On a quarterly basis, the Company evaluates its investment in an unconsolidated joint venture for other-than-temporary impairments. As of December 31, 2016 , the Company did not identify any indicators of impairment related to its unconsolidated real estate joint venture accounted for under the equity method.
Investment in Unconsolidated Joint Venture, Cost Method	The Company accounts for investments in unconsolidated joint venture entities in which the Company does not have the ability to exercise significant influence and has virtually no influence over partnership operating and financial policies using the cost method of accounting. Under the cost method, income distributions from the partnership are recognized in other income. Distributions that exceed the Company’s share of earnings are applied to reduce the carrying value of the Company’s investment and any capital contributions will increase the carrying value of the Company’s investment. On a quarterly basis, the Company evaluates its cost method investment in an unconsolidated joint venture for other-than-temporary impairments. The fair value of a cost method investment is not estimated if there are no identified events or changes in circumstances that would indicate a significant adverse effect on the fair value of the investment. As of December 31, 2016 , the Company did not identify any indicators of impairment related to its unconsolidated real estate joint venture accounted for under the cost method.
Cash and Cash Equivalents	The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents may include cash and short-term investments. Cash and cash equivalents are stated at cost, which approximates fair value. There were no restrictions on the use of the Company’s cash and cash equivalents as of December 31, 2016 and 2015 . The Company’s cash and cash equivalents balance exceeded federally insurable limits as of December 31, 2016 . The Company monitors the cash balances in its operating accounts and adjusts the cash balances as appropriate; however, these cash balances could be impacted if the underlying financial institutions fail or are subject to other adverse conditions in the financial markets. To date, the Company has experienced no loss or lack of access to cash in its operating accounts.
Restricted Cash	Restricted cash is comprised of lender impound reserve accounts on the Company’s borrowings for security deposits, property taxes, insurance, debt service obligations and capital improvements and replacements.
Rent and Other Receivables	The Company periodically evaluates the collectibility of amounts due from tenants and maintains an allowance for doubtful accounts for estimated losses resulting from the inability of tenants to make required payments under lease agreements. In addition, the Company maintains an allowance for deferred rent receivable that arises from the straight-lining of rents. The Company exercises judgment in establishing these allowances and considers payment history and current credit status of its tenants in developing these estimates.
Deferred Financing Costs	Deferred financing costs represent commitment fees, loan fees, legal fees and other third-party costs associated with obtaining financing and are presented on the balance sheet as a direct deduction from the carrying value of the associated debt liability. These costs are amortized over the terms of the respective financing agreements using the interest method. Unamortized deferred financing costs are generally expensed when the associated debt is refinanced or repaid before maturity unless specific rules are met that would allow for the carryover of such costs to the refinanced debt. Deferred financing costs incurred before an associated debt liability is recognized are included in prepaid and other assets on the balance sheet. Costs incurred in seeking financing transactions that do not close are expensed in the period in which it is determined that the financing will not close.
Fair Value Measurements	Under GAAP, the Company is required to measure certain financial instruments at fair value on a recurring basis. In addition, the Company is required to measure other non-financial and financial assets at fair value on a non-recurring basis (e.g., carrying value of impaired real estate loans receivable and long-lived assets). Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The GAAP fair value framework uses a three-tiered approach. Fair value measurements are classified and disclosed in one of the following three categories: • Level 1: unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities; • Level 2: quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which significant inputs and significant value drivers are observable in active markets; and • Level 3: prices or valuation techniques where little or no market data is available that requires inputs that are both significant to the fair value measurement and unobservable. When available, the Company utilizes quoted market prices from an independent third-party source to determine fair value and classifies such items in Level 1 or Level 2. In instances where the market for a financial instrument is not active, regardless of the availability of a nonbinding quoted market price, observable inputs might not be relevant and could require the Company to make a significant adjustment to derive a fair value measurement. Additionally, in an inactive market, a market price quoted from an independent third party may rely more on models with inputs based on information available only to that independent third party. When the Company determines that the market for a financial instrument owned by the Company is illiquid or when market transactions for similar instruments do not appear orderly, the Company uses several valuation sources (including internal valuations, discounted cash flow analysis and quoted market prices) and establishes a fair value by assigning weights to the various valuation sources. Additionally, when determining the fair value of liabilities in circumstances in which a quoted price in an active market for an identical liability is not available, the Company measures fair value using (i) a valuation technique that uses the quoted price of the identical liability when traded as an asset or quoted prices for similar liabilities when traded as assets or (ii) another valuation technique that is consistent with the principles of fair value measurement, such as the income approach or the market approach. Changes in assumptions or estimation methodologies can have a material effect on these estimated fair values. In this regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, may not be realized in an immediate settlement of the instrument. The Company considers the following factors to be indicators of an inactive market: (i) there are few recent transactions, (ii) price quotations are not based on current information, (iii) price quotations vary substantially either over time or among market makers (for example, some brokered markets), (iv) indexes that previously were highly correlated with the fair values of the asset or liability are demonstrably uncorrelated with recent indications of fair value for that asset or liability, (v) there is a significant increase in implied liquidity risk premiums, yields, or performance indicators (such as delinquency rates or loss severities) for observed transactions or quoted prices when compared with the Company’s estimate of expected cash flows, considering all available market data about credit and other nonperformance risk for the asset or liability, (vi) there is a wide bid-ask spread or significant increase in the bid-ask spread, (vii) there is a significant decline or absence of a market for new issuances (that is, a primary market) for the asset or liability or similar assets or liabilities, and (viii) little information is released publicly (for example, a principal-to-principal market). The Company considers the following factors to be indicators of non-orderly transactions: (i) there was not adequate exposure to the market for a period before the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets or liabilities under current market conditions, (ii) there was a usual and customary marketing period, but the seller marketed the asset or liability to a single market participant, (iii) the seller is in or near bankruptcy or receivership (that is, distressed), or the seller was required to sell to meet regulatory or legal requirements (that is, forced), and (iv) the transaction price is an outlier when compared with other recent transactions for the same or similar assets or liabilities.
Dividend Reinvestment Plan	The Company has adopted a dividend reinvestment plan (the “DRP”) through which future common stockholders may elect to reinvest an amount equal to the distributions declared on their shares in additional shares of the Company’s common stock in lieu of receiving cash distributions. On March 25, 2014, the Company’s board of directors approved a fourth amended and restated dividend reinvestment plan (the “Fourth Amended DRP”). The Fourth Amended DRP became effective for purchases under the plan on or after April 6, 2014. Pursuant to the Fourth Amended DRP, the purchase price of shares of the Company’s common stock is equal to 95% of the most recently announced estimated value per share of the Company’s common stock. Prior to April 6, 2014 (the effective date of the Fourth Amended DRP), the purchase price per share under the DRP was $9.50 . On March 25, 2014, the Company’s board of directors approved an estimated value per share of the Company’s common stock of $11.27 (unaudited) based on the estimated value of the Company’s assets less the estimated value of the Company’s liabilities, or net asset value, divided by the number of shares outstanding as of December 31, 2013, with the exception of certain adjustments for actual and expected acquisition-related costs subsequent to December 31, 2013. Commencing on April 6, 2014, the purchase price per share under the DRP was $10.71 . On December 9, 2014, the Company’s board of directors approved an estimated value per share of the Company’s common stock of $12.24 (unaudited) based on the estimated value of the Company’s assets less the estimated value of the Company’s liabilities, or net asset value, divided by the number of shares outstanding as of September 30, 2014. Commencing December 29, 2014, the purchase price per share under the DRP was $11.63 . On May 12, 2015, the Company’s board of directors adopted a fifth amended and restated dividend reinvestment plan (the “Fifth Amended DRP”). Pursuant to the Fifth Amended DRP, shares may be purchased at a price equal to the estimated value per share most recently announced in a public filing. There were no other changes to the Fifth Amended DRP, which became effective on July 1, 2015. On December 8, 2015, the Company’s board of directors approved an estimated value per share of the Company’s common stock of $13.44 (unaudited) based on the estimated value of the Company’s assets less the estimated value of the Company’s liabilities, or net asset value, divided by the number of shares outstanding as of September 30, 2015. Commencing January 4, 2016, the purchase price per share under the DRP was $13.44 . On December 8, 2016 , the Company’s board of directors approved an estimated value per share of the Company’s common stock of $ 14.81 (unaudited) based on the estimated value of the Company’s assets less the estimated value of the Company’s liabilities, or net asset value, divided by the number of shares outstanding as of September 30, 2016 . Commencing on the next purchase date, the purchase price per share under the DRP was $ 14.81 . No selling commissions or dealer manager fees will be paid on shares sold under the DRP.
Redeemable Common Stock	The Company has adopted a share redemption program that may enable stockholders to sell their shares to the Company in limited circumstances. Pursuant to the share redemption program there are several limitations on the Company’s ability to redeem shares: • Unless the shares are being redeemed in connection with a stockholder’s death, “qualifying disability” or “determination of incompetence” (each as defined under the share redemption program), the Company may not redeem shares until the stockholder has held the shares for one year. • During 2016 , redemptions were limited to the amount of net proceeds from the sale of shares under the Company’s dividend reinvestment plan during 2015 plus an additional $25.0 million . The last $1.0 million of net proceeds from the dividend reinvestment plan during 2015 was reserved exclusively for shares redeemed in connection with a stockholder’s death, “qualifying disability,” or “determination of incompetence”. Any portion of this last $1.0 million not used to redeem shares in connection with a stockholder's death, "qualifying disability", or "determination of incompetence" were used to redeem shares not requested in connection with a stockholder’s death, “qualifying disability" or “determination of incompetence” during December 2016 . • The Company may not redeem more than $3.0 million of shares in a given quarter (excluding shares redeemed in connection with a stockholder’s death, “qualifying disability” or “determination of incompetence”). To the extent that the Company redeems less than $3.0 million of shares (excluding shares redeemed in connection with a stockholder’s death, “qualifying disability” or “determination of incompetence”) in a given fiscal quarter, any remaining excess capacity to redeem shares in such fiscal quarter will be added to the Company’s capacity to otherwise redeem shares (excluding shares redeemed in connection with a stockholder’s death, “qualifying disability” or “determination of incompetence”) during succeeding fiscal quarters. The last $1.0 million of net proceeds from the dividend reinvestment plan during the prior year is reserved exclusively for shares redeemed in connection with a stockholder’s death, “qualifying disability,” or “determination of incompetence”. The share redemption plan also provides that, to the extent that in the last month of any calendar year the amount of redemption requests in connection with a stockholder’s death, “qualifying disability or “determination of incompetence” is less than the $1.0 million reserved for such redemptions under the share redemption plan, any excess funds may be used to redeem shares not requested in connection with a stockholder’s death, “qualifying disability or “determination of incompetence” during such month. The Company may increase or decrease this limit upon ten business days’ notice to stockholders. The Company’s board of directors may approve an increase in this limit to the extent that the Company has received proceeds from asset sales or the refinancing of debt or for any other reason deemed appropriate by the board of directors. • During any calendar year, the Company may redeem no more than 5% of the weighted-average number of shares outstanding during the prior calendar year. • The Company has no obligation to redeem shares if the redemption would violate the restrictions on distributions under Maryland law, which prohibits distributions that would cause a corporation to fail to meet statutory tests of solvency. Pursuant to the fifth amended and restated share redemption program, the Company redeemed shares effective June 13, 2015 at a price equal to the most recent estimated value per share as of the applicable redemption date, regardless of how long such shares have been held or whether shares are being redeemed in connection with a stockholder’s death, “qualifying disability” or “determination of incompetence.” Effective January 9, 2016, pursuant to the eighth amended and restated share redemption program, the Company redeemed shares at prices determined as follows: • 97.5% of the Company’s most recent estimated value per share as of the applicable redemption date for those shares held for at least one year but less than four years; and • 100% of the Company’s most recent estimated value per share as of the applicable redemption date for those shares held for at least four years. Effective December 30, 2016, except for redemptions made upon a stockholder’s death, “qualifying disability” or “determination of incompetence”, the price at which the Company began to redeem shares is 95% of the Company’s most recent estimated value per share as of the applicable redemption date. Upon the death, “qualifying disability” or “determination of incompetence” of a stockholder, the redemption price continued to be equal to the Company’s most recent estimated value per share. The Company’s board of directors may amend, suspend or terminate the share redemption program with ten business days’ notice to its stockholders. The Company may provide this notice by including such information in a Current Report on Form 8-K or in the Company’s annual or quarterly reports, all publicly filed with the SEC, or by a separate mailing to its stockholders. The Company records amounts that are redeemable under the share redemption program as redeemable common stock in its consolidated balance sheets because the shares will be mandatorily redeemable at the option of the holder and therefore their redemption will be outside the control of the Company. However, because the amounts that can be redeemed will be determinable and only contingent on an event that is likely to occur (e.g., the passage of time), the Company presents the net proceeds from the current year and prior year DRP, net of current year redemptions, as redeemable common stock in its consolidated balance sheets. The Company classifies as liabilities financial instruments that represent a mandatory obligation of the Company to redeem shares. The Company’s redeemable common shares are contingently redeemable at the option of the holder. When the Company determines it has a mandatory obligation to repurchase shares under the share redemption program, it will reclassify such obligations from temporary equity to a liability based upon their respective settlement values. The Company limits the dollar value of shares that may be redeemed under the program as described above. For the year ended December 31, 2016 , the Company had redeemed $38.6 million of common stock, which represented all redemption requests received in good order and eligible for redemption through the December 2016 redemption date, except for 1,013,619 shares totaling $14.3 million due to the limitations described above. The Company recorded $12.6 million and $3.7 million of other liabilities on the Company’s balance sheet as of December 31, 2016 and 2015 , respectively, related to these unfulfilled redemption requests. Based on the amount of net proceeds raised from the sale of shares under the dividend reinvestment plan during 2016 , the Company has $12.6 million available for all redemptions in 2017 , including shares that are redeemed in connection with a stockholders’ death, "qualifying disability" or "determination of incompetence".
Related Party Transactions	Pursuant to the Advisory Agreement, the Company is obligated to pay the Advisor specified fees upon the provision of certain services related to the investment of funds in real estate and real estate-related investments, management of the Company’s investments and for other services (including, but not limited to, the disposition of investments). The Company is or was obligated to reimburse the Advisor for acquisition and origination expenses and certain operating expenses incurred on behalf of the Company or incurred in connection with providing services to the Company. In addition, the Advisor is entitled to certain other fees, including an incentive fee upon achieving certain performance goals, as detailed in the Advisory Agreement. See note 11 , “Related Party Transactions.” The Company records all related party fees as incurred, subject to any limitations described in the Advisory Agreement. The Company had not incurred any subordinated participation in net cash flows or subordinated incentive listing fees payable to the Advisor through December 31, 2016 .
Related Party Transactions, Acquisition and Origination Fees	The Company pays the Advisor an acquisition and origination fee equal to 1% of the cost of investments acquired, or the amount funded by the Company to acquire or originate mortgage, mezzanine, bridge or other loans, including any acquisition and origination expenses related to such investments and any debt attributable to such investments.
Related Party Transactions, Asset Management Fees	With respect to investments in loans and any investments other than real estate, the Company pays the Advisor a monthly fee calculated, each month, as one-twelfth of 0.75% of the lesser of (i) the amount paid or allocated to acquire or fund the loan or other investment, inclusive of acquisition and origination fees and expenses related thereto and the amount of any debt associated with or used to acquire or fund such investment and (ii) the outstanding principal amount of such loan or other investment, plus the acquisition and origination fees and expenses related to the acquisition or funding of such investment, as of the time of calculation. With respect to investments in real estate, the Company pays the Advisor a monthly asset management fee equal to one-twelfth of 0.75% of the amount paid or allocated to acquire the investment, including the cost of subsequent capital improvements, inclusive of acquisition fees and expenses related thereto and the amount of any debt associated with or used to acquire such investment. In the case of investments made through joint ventures, the asset management fee is determined based on the Company’s proportionate share of the underlying investment, inclusive of the Company’s proportionate share of any fees and expenses related thereto.
Related Party Transactions, Disposition Fee	For substantial assistance in connection with the sale of properties or other investments, the Company pays the Advisor or its affiliates 1.0% of the contract sales price of each property or other investment sold; provided, however, in no event may the disposition fees paid to the Advisor, its affiliates and unaffiliated third parties exceed 6.0% of the contract sales price.
Foreign Currency Transactions	The U.S. dollar is the Company’s functional currency. Transactions denominated in currency other than the Company’s functional currency are recorded upon initial recognition at the exchange rate on the date of the transaction. After initial recognition, monetary assets and liabilities denominated in foreign currency are remeasured at each reporting date into the foreign currency at the exchange rate on that date. Exchange rate differences, other than those accounted for as hedging transactions, are recognized as foreign currency transaction gain or loss included in the Company’s consolidated statements of operations.
Derivative Instruments	The Company enters into derivative instruments for risk management purposes to hedge its exposure to cash flow variability caused by changing interest rates on its variable rate notes payable and enters into derivative instruments such as cross currency swaps, forward contracts, puts or calls for risk management purposes to hedge its exposure to variability in foreign currency exchange rates of the Israeli new Shekel versus the U.S. dollar. The Company records these derivative instruments at fair value on the accompanying consolidated balance sheets. Derivative instruments designated and qualifying as a hedge of the exposure to variability in expected future cash flows or other types of forecasted transactions are considered cash flow hedges. The change in fair value of the effective portion of a derivative instrument that is designated as a cash flow hedge is recorded as other comprehensive income (loss) on the accompanying consolidated statements of comprehensive income (loss) and consolidated statements of stockholders’ equity. The changes in fair value for derivative instruments that are not designated as a hedge or that do not meet the hedge accounting criteria are recorded as gain or loss on derivative instruments and included in earnings in the accompanying consolidated statements of operations.
Income Taxes	The Company has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended. To qualify as a REIT, the Company must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of the Company’s annual REIT taxable income to its stockholders (which is computed without regard to the dividends paid deduction or net capital gain and which does not necessarily equal net income as calculated in accordance with GAAP). As a REIT, the Company generally will not be subject to federal income tax to the extent it distributes qualifying dividends to its stockholders. The Company conducts certain business activities through taxable REIT subsidiaries. If the Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax on its taxable income at regular corporate income tax rates and generally will not be permitted to qualify for treatment as a REIT for federal income tax purposes for the four taxable years following the year during which qualification is lost unless the Internal Revenue Service grants the Company relief under certain statutory provisions. Such an event could materially and adversely affect the Company’s net income and net cash available for distribution to stockholders. However, the Company intends to organize and operate in such a manner as to qualify for treatment as a REIT. The Company has concluded that there are no significant uncertain tax positions requiring recognition in its financial statements. Neither the Company nor its subsidiaries have been assessed interest or penalties by any major tax jurisdictions. The Company’s evaluations were performed for all open tax years through December 31, 2016 . As of December 31, 2016 , returns for the calendar year 2012 through 2015 remain subject to examination by major tax jurisdictions.
Segments	The Company has invested in non-performing loans, opportunistic real estate and other real estate-related assets. In general, the Company intends to hold its investments in non-performing loans, opportunistic real estate and other real estate-related assets for capital appreciation. Traditional performance metrics of non-performing loans, opportunistic real estate and other real estate-related assets may not be meaningful as these investments are generally non-stabilized and do not provide a consistent stream of interest income or rental revenue. These investments exhibit similar long-term financial performance and have similar economic characteristics. These investments typically involve a higher degree of risk and do not provide a constant stream of ongoing cash flows. As a result, the Company’s management views non-performing loans, opportunistic real estate and other real estate-related assets as similar investments. Substantially all of its revenue and net income (loss) is from non-performing loans, opportunistic real estate and other real estate-related assets, and therefore, the Company currently aggregates its operating segments into one reportable business segment.
Per Share Data	Basic net income (loss) per share of common stock is calculated by dividing net income (loss) attributable to common stockholders by the weighted-average number of shares of common stock issued and outstanding during such period. Diluted net income (loss) per share of common stock equals basic net income (loss) per share of common stock as there were no potentially dilutive securities outstanding during the years ended December 31, 2016 , 2015 and 2014 . Distributions declared per share were $0.38 , $0.38 and $0.26 during the years ended December 31, 2016 , 2015 and 2014 , respectively.
Square Footage, Occupancy and Other Measures	Square footage, occupancy, number of tenants and other measures including annualized base rents and annualized base rents per square foot used to describe real estate and real-estate related investments included in these Notes to Consolidated Financial Statements are presented on an unaudited basis.
Recently Issued Accounting Standards Update	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU No. 2014-09”). ASU No. 2014-09 requires an entity to recognize the revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. ASU No. 2014-09 supersedes the revenue requirements in Revenue Recognition (Topic 605) and most industry-specific guidance throughout the Industry Topics of the Codification. ASU No. 2014-09 does not apply to lease contracts within the scope of Leases (Topic 840). ASU No. 2014-09 was to be effective for fiscal years, and interim periods within those years, beginning after December 15, 2016, and is to be applied retrospectively, with early application not permitted. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date (“ASU No. 2015-14”), which defers the effective date of ASU No. 2014-09 by one year. Early adoption is permitted but not before the original effective date. As the primary source of revenue for the Company is generated through leasing arrangements, which are excluded from this standard, the Company does not expect the adoption of ASU No. 2014-09 to have a significant impact on its financial statements. In August 2014, the FASB issued ASU No. 2014-15, Presentation of Financial Statements (Subtopic 205-40), Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU No. 2014-15”). The amendments in ASU No. 2014-15 require management to evaluate, for each annual and interim reporting period, whether there are conditions or events, considered in the aggregate, that raise substantial doubt about an entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or are available to be issued when applicable) and, if so, provide related disclosures. ASU No. 2014-15 is effective for annual periods ending after December 15, 2016, and interim periods within annual periods beginning after December 15, 2016. The adoption of ASU No. 2014-15 did not have a significant impact on the Company's financial statements, although it could require additional disclosures in future periods if conditions or events exist that raise substantial doubt about the Company's ability to continue as a going concern. In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis (“ASU No. 2015-02”), which amended the existing accounting standards for consolidation under both the variable interest model and the voting model. ASU No. 2015-02 modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities (“VIEs”) or voting interest entities, eliminates the presumption that a general partner should consolidate a limited partnership and affects the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships. ASU No. 2015-02 is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. A reporting entity may apply the amendments in ASU No. 2015-02 using: (a) a modified retrospective approach by recording a cumulative-effect adjustment to equity as of the beginning of the fiscal year of adoption; or (b) by applying the amendments retrospectively. On January 1, 2016, the Company adopted ASU No. 2015-02 and re-evaluated its consolidation analysis of its joint ventures, concluding that such adoption did not result in (a) the classification of any entities as VIEs, (b) a consolidation of entities not previously consolidated or (c) a deconsolidation of entities previously consolidated. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU No. 2016-01”). The amendments in ASU No. 2016-01 address certain aspects of recognition, measurement, presentation and disclosure of financial instruments. ASU No. 2016-01 primarily affects accounting for equity investments and financial liabilities where the fair value option has been elected. ASU No. 2016-01 also requires entities to present financial assets and financial liabilities separately, grouped by measurement category and form of financial asset in the balance sheet or in the accompanying notes to the financial statements. ASU No. 2016-01 is effective for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early application is permitted for financial statements that have not been previously issued. The Company does not expect the adoption of ASU No. 2016-01 to have a significant impact on its financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU No. 2016-02”). The amendments in ASU No. 2016-02 change the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. ASU No. 2016-02 is effective for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption of ASU No. 2016-02 is permitted. The new leases standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company is currently evaluating the impact of adopting the new leases standard on its consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses of Financial Instruments (“ASU No. 2016-13”). ASU No. 2016-13 affects entities holding financial assets and net investments in leases that are not accounted for at fair value through net income. The amendments in ASU No. 2016-13 require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. ASU No. 2016-13 also amends the impairment model for available-for-sale securities. An entity will recognize an allowance for credit losses on available-for-sale debt securities as a contra-account to the amortized cost basis rather than as a direct reduction of the amortized cost basis of the investment, as is currently required. ASU No. 2016-13 also requires new disclosures. For financial assets measured at amortized cost, an entity will be required to disclose information about how it developed its allowance for credit losses, including changes in the factors that influenced management’s estimate of expected credit losses and the reasons for those changes. For financing receivables and net investments in leases measured at amortized cost, an entity will be required to further disaggregate the information it currently discloses about the credit quality of these assets by year of the asset’s origination for as many as five annual periods. For available for sale securities, an entity will be required to provide a roll-forward of the allowance for credit losses and an aging analysis for securities that are past due. ASU No. 2016-13 is effective for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is still evaluating the impact of adopting ASU No. 2016-13 on its financial statements, but does not expect the adoption of ASU No. 2016-13 to have a material impact on its financial statements. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU No. 2016-15”). ASU No. 2016-15 is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. The amendments in ASU No. 2016-15 provide guidance on eight specific cash flow issues, including the following that are or may be relevant to the Company: (a) Cash payments for debt prepayment or debt extinguishment costs should be classified as cash outflows for financing activities; (b) Cash payments relating to contingent consideration made soon after an acquisition’s consummation date (i.e., approximately three months or less) should be classified as cash outflows for investing activities. Payments made thereafter should be classified as cash outflows for financing activities up to the amount of the original contingent consideration liability. Payments made in excess of the amount of the original contingent consideration liability should be classified as cash outflows for operating activities; (c) Cash payments received from the settlement of insurance claims should be classified on the basis of the nature of the loss (or each component loss, if an entity receives a lump-sum settlement); (d) Relating to distributions received from equity method investments, ASU No. 2016-15 provides an accounting policy election for classifying distributions received from equity method investments. Such amounts can be classified using a (1) cumulative earnings approach, or (2) nature of distribution approach. Under the cumulative earnings approach, an investor would compare the distributions received to its cumulative equity method earnings since inception. Any distributions received up to the amount of cumulative equity earnings would be considered a return on investment and classified in operating activities. Any excess distributions would be considered a return of investment and classified in investing activities. Alternatively, an investor can choose to classify the distributions based on the nature of activities of the investee that generated the distribution. If the necessary information is subsequently not available for an investee to determine the nature of the activities, the entity should use the cumulative earnings approach for that investee and report a change in accounting principle on a retrospective basis; (e) In the absence of specific guidance, an entity should classify each separately identifiable cash source and use on the basis of the nature of the underlying cash flows. For cash flows with aspects of more than one class that cannot be separated, the classification should be based on the activity that is likely to be the predominant source or use of cash flow. ASU No. 2016-15 is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Company is still evaluating the impact of adopting ASU No. 2016-15 on its financial statements, but does not expect the adoption of ASU No. 2016-15 to have a material impact on its financial statements. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (“ASU No. 2016-18”). ASU No. 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, restricted cash and restricted cash equivalents. Therefore, amounts generally described as restricted cash should be included with cash and cash equivalents when reconciling the beginning of period and end of period total amounts shown on the statement of cash flows. ASU No. 2016-18 is effective for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. The Company elected to early adopt ASU No. 2016-18 for the reporting period ending December 31, 2016 and was applied retrospectively. As a result of adoption of ASU No. 2016-18, the Company no longer presents the changes within restricted cash in the consolidated statements of cash flows. In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU No. 2017-01”) to add guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU No. 2017-01 provides a screen to determine when an integrated set of assets and activities (collectively referred to as a “set”) is not a business. The screen requires that, when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. If the screen is not met, ASU No. 2017-01 (1) requires that to be considered a business, a set must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create output and (2) removes the evaluation of whether a market participant could replace missing elements. ASU No. 2017-01 provides a framework to assist entities in evaluating whether both an input and a substantive process are present. The framework includes two sets of criteria to consider that depend on whether a set has outputs. Although outputs are not required for a set to be a business, outputs generally are a key element of a business; therefore, the FASB has developed more stringent criteria for sets without outputs. ASU No. 2017-01 is effective for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The amendments can be applied to transactions occurring before the guidance was issued (January 5, 2017) as long as the applicable financial statements have not been issued. The Company elected to early adopt ASU No. 2017-01 for the reporting period beginning January 1, 2017. As a result of the adoption of ASU No. 2017-01, the Company’s acquisitions of investment properties beginning January 1, 2017 could qualify as an asset acquisition (as opposed to a business combination). Therefore, transaction costs associated with asset acquisitions will be capitalized, while these costs associated with business combinations will continue to be expensed as incurred.

SUMMARY OF SIGNIFICANT ACCOUN27

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Schedule of Estimated Useful Life	The Company anticipates the estimated useful lives of its assets by class to be generally as follows: Buildings 25-40 years Building improvements 10-40 years Tenant improvements Shorter of lease term or expected useful life Tenant origination and absorption costs Remaining term of related leases, including below-market renewal periods

REAL ESTATE HELD FOR INVESTME28

REAL ESTATE HELD FOR INVESTMENT (Tables)	12 Months Ended
	Dec. 31, 2016
Real Estate [Abstract]
Schedule of Real Estate Investments	The following table summarizes the Company’s real estate held for investment as of December 31, 2016 and 2015 , respectively (in thousands): December 31, 2016 December 31, 2015 Land $ 322,499 $ 223,201 Buildings and improvements 855,744 646,979 Tenant origination and absorption costs 48,964 43,894 Total real estate, cost 1,227,207 914,074 Accumulated depreciation and amortization (120,176 ) (91,560 ) Total real estate, net $ 1,107,031 $ 822,514 The following table provides summary information regarding the Company’s real estate held for investment as of December 31, 2016 (in thousands): Property Date Acquired or Foreclosed on City State Property Type Land Building and Improvements Tenant Origination and Absorption Total Real Estate, at Cost Accumulated Depreciation and Amortization Total Real Estate, Net Ownership % Northridge Center I & II 03/25/2011 Atlanta GA Office $ 2,234 $ 7,495 $ — $ 9,729 $ (2,509 ) $ 7,220 100.0 % Iron Point Business Park 06/21/2011 Folsom CA Office 2,671 19,515 — 22,186 (4,914 ) 17,272 100.0 % Richardson Portfolio: Palisades Central I 11/23/2011 Richardson TX Office 1,037 10,260 657 11,954 (2,605 ) 9,349 90.0 % Palisades Central II 11/23/2011 Richardson TX Office 810 17,835 348 18,993 (4,432 ) 14,561 90.0 % Greenway I 11/23/2011 Richardson TX Office 561 2,363 — 2,924 (691 ) 2,233 90.0 % Greenway III 11/23/2011 Richardson TX Office 702 3,709 559 4,970 (1,481 ) 3,489 90.0 % Undeveloped Land 11/23/2011 Richardson TX Undeveloped Land 3,134 — — 3,134 — 3,134 90.0 % Total Richardson Portfolio 6,244 34,167 1,564 41,975 (9,209 ) 32,766 Park Highlands (1) 12/30/2011 North Las Vegas NV Undeveloped Land 34,162 — — 34,162 — 34,162 (1) Bellevue Technology Center 07/31/2012 Bellevue WA Office 25,506 56,814 3,577 85,897 (10,810 ) 75,087 100.0 % Powers Ferry Landing East 09/24/2012 Atlanta GA Office 1,643 8,016 99 9,758 (2,393 ) 7,365 100.0 % 1800 West Loop 12/04/2012 Houston TX Office 8,360 60,482 4,781 73,623 (12,894 ) 60,729 100.0 % West Loop I & II 12/07/2012 Houston TX Office 7,300 32,240 1,864 41,404 (5,921 ) 35,483 100.0 % Burbank Collection 12/12/2012 Burbank CA Retail 4,175 11,090 725 15,990 (1,721 ) 14,269 90.0 % Austin Suburban Portfolio 03/28/2013 Austin TX Office 8,288 68,344 1,872 78,504 (10,533 ) 67,971 100.0 % Westmoor Center 06/12/2013 Westminster CO Office 10,058 67,157 5,175 82,390 (12,022 ) 70,368 100.0 % Central Building 07/10/2013 Seattle WA Office 7,015 26,720 1,636 35,371 (4,013 ) 31,358 100.0 % 50 Congress Street 07/11/2013 Boston MA Office 9,876 41,396 2,407 53,679 (6,747 ) 46,932 100.0 % 1180 Raymond 08/20/2013 Newark NJ Apartment 8,292 37,542 — 45,834 (3,925 ) 41,909 100.0 % Park Highlands II (2) 12/10/2013 North Las Vegas NV Undeveloped Land 23,464 — — 23,464 — 23,464 100.0 % Maitland Promenade II 12/18/2013 Orlando FL Office 3,434 24,722 3,520 31,676 (4,516 ) 27,160 100.0 % Plaza Buildings 01/14/2014 Bellevue WA Office 53,040 138,900 7,301 199,241 (18,448 ) 180,793 100.0 % 424 Bedford 01/31/2014 Brooklyn NY Apartment 8,860 25,498 — 34,358 (2,049 ) 32,309 90.0 % Richardson Land II 09/04/2014 Richardson TX Undeveloped Land 3,418 — — 3,418 — 3,418 90.0 % Westpark Portfolio 05/10/2016 Redmond WA Office/Flex/Industrial 36,085 84,660 8,813 129,558 (4,550 ) 125,008 100.0 % 353 Sacramento 07/11/2016 San Francisco CA Office 58,374 110,986 5,630 174,990 (3,002 ) 171,988 100.0 % $ 322,499 $ 855,744 $ 48,964 $ 1,227,207 $ (120,176 ) $ 1,107,031 _____________________ (1) On March 18, 2016, the Company increased its membership interest in the Park Highlands joint venture from 50.1% to 51.58% by acquiring an additional 1.48% membership interest from one of the joint venture partners. On June 6, 2016, the Company increased its membership interest in the Park Highlands joint venture from 51.58% to 97.62% by acquiring an additional 46.04% membership interest from one of the joint venture partners. On June 25, 2016, the Company increased its membership interest in the Park Highlands joint venture from 97.62% to 100% by acquiring the remaining 2.38% membership interest from the remaining joint venture partner. On September 7, 2016, a subsidiary of the Company that owns a portion of Park Highlands, sold 820 units of 10% Class A non-voting preferred membership units for $0.8 million to accredited investors. The amount of the Class A non-voting preferred membership units raised, net of offering costs, is included in other liabilities on the accompanying consolidated balance sheets. (2) On March 18, 2016, the Company increased its membership interest in the Park Highlands II joint venture from 99.5% to 100% by acquiring the remaining 0.5% membership interest from its joint venture partner.
Schedule of Future Minimum Rental Income for Company's Properties	As of December 31, 2016 , the future minimum rental income from the Company’s properties, excluding apartment leases, under non-cancelable operating leases was as follows (in thousands): 2017 $ 99,868 2018 87,056 2019 72,682 2020 57,188 2021 43,201 Thereafter 90,412 $ 450,407
Schedules of Concentration of Risk, by Risk Factor	As of December 31, 2016 , the Company’s commercial real estate properties were leased to approximately 650 tenants over a diverse range of industries and geographic areas. The Company’s highest tenant industry concentrations (greater than 10% of annualized base rent) were as follows: Industry Number of Tenants Annualized Base Rent (1) (in thousands) Percentage of Annualized Base Rent Finance 51 $ 11,223 10.8 % Computer System Design & Programming 57 11,161 10.7 % Insurance Carriers & Related Activities 31 10,474 10.0 % $ 32,858 31.5 % _____________________ (1) Annualized base rent represents annualized contractual base rental income as of December 31, 2016 , adjusted to straight-line any contractual tenant concessions (including free rent), rent increases and rent decreases from the lease’s inception through the balance of the lease term.

TENANT ORIGINATION AND ABSORP29

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2016
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities [Abstract]
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities	As of December 31, 2016 and 2015 , the Company’s tenant origination and absorption costs, above-market lease assets and below-market lease liabilities (excluding fully amortized assets and liabilities and accumulated amortization) were as follows (in thousands): Tenant Origination and Absorption Costs Above-Market Lease Assets Below-Market Lease Liabilities December 31, December 31, December 31, December 31, December 31, December 31, Cost $ 48,964 $ 43,894 $ 1,877 $ 2,399 $ (10,945 ) $ (5,826 ) Accumulated Amortization (23,989 ) (22,749 ) (1,244 ) (1,361 ) 4,394 3,091 Net Amount $ 24,975 $ 21,145 $ 633 $ 1,038 $ (6,551 ) $ (2,735 )
Amortization of Tenant Origination and Absorption Costs, Above-Market Leases and Below-Market Lease Liabilities	Increases (decreases) in net income as a result of amortization of the Company’s tenant origination and absorption costs, above-market lease assets and below-market lease liabilities for the years ended December 31, 2016 , 2015 and 2014 were as follows (in thousands): Tenant Origination and Absorption Costs Above-Market Lease Assets Below-Market Lease Liabilities For the Years Ended December 31, For the Years Ended December 31, For the Years Ended December 31, 2016 2015 2014 2016 2015 2014 2016 2015 2014 Amortization $ (10,850 ) $ (10,555 ) $ (15,020 ) $ (459 ) $ (1,023 ) $ (1,070 ) $ 2,789 $ 1,668 $ 2,409
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The remaining unamortized balance for these outstanding intangible assets and liabilities as of December 31, 2016 will be amortized for the years ending December 31 as follows (in thousands): Tenant Origination and Above-Market Below-Market 2017 $ (9,614 ) $ (296 ) $ 3,501 2018 (6,014 ) (139 ) 1,558 2019 (3,835 ) (89 ) 751 2020 (2,423 ) (65 ) 501 2021 (1,484 ) (44 ) 178 Thereafter (1,605 ) — 62 $ (24,975 ) $ (633 ) $ 6,551 Weighted-Average Remaining Amortization Period 3.8 years 3.1 years 2.6 years

REAL ESTATE LOAN RECEIVABLE (Ta

REAL ESTATE LOAN RECEIVABLE (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Schedule of Real Estate Loans Receivable	As of December 31, 2015 , the Company owned one real estate loan receivable, which was repaid during the year ended December 31, 2016 . The information for that real estate loan receivable as of December 31, 2016 and 2015 is set forth below (in thousands): Loan Name Location of Related Property or Collateral Date Originated Property Type Loan Type Outstanding Principal Balance as of December 31, 2016 Book Value as of December 31, 2016 Book Value as of December 31, 2015 (1) Contractual Interest Rate Annualized Effective Interest Rate Maturity Date University House First Mortgage New York, New York 3/20/2013 Student Housing Mortgage $ — $ — $ 27,850 (2) (2) (2) _____________________ (1) Book value of the real estate loan receivable represents outstanding principal balance adjusted for unamortized acquisition discounts, origination fees and direct origination and acquisition costs and additional interest accretion. (2) See below for a discussion of the University House First Mortgage.
Schedule of Interest Income from Real Estate Loans Receivable	For the years ended December 31, 2016 , 2015 and 2014 interest income from real estate loans receivable consisted of the following (in thousands): 2016 2015 2014 Contractual interest income (including deferred interest) $ 3,655 $ 1,540 $ 2,752 Accretion of closing costs, origination fees and extension fees, net — 428 614 Interest income from real estate loans receivable $ 3,655 $ 1,968 $ 3,366

REAL ESTATE DEBT SECURITIES (Ta

REAL ESTATE DEBT SECURITIES (Tables)	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Schedule of Activity of Real Estate Debt Securities	As of December 31, 2016 , the Company owned an investment in real estate debt securities. The information for those real estate debt securities as of December 31, 2016 is set forth below (in thousands): Debt Securities Name Date Originated Debt Securities Type Outstanding Principal Balance as of December 31, 2016 (1) Book Value as of December 31, 2016 (2) Contractual Interest Rate (3) Annualized Effective Interest Rate (3) Maturity Date Battery Point Series B Preferred Units 10/28/2016 Series B Preferred Units $ 5,000 $ 4,683 7.0 % 13.1 % 10/28/2019 _____________________ (1) Outstanding principal balance as of December 31, 2016 represents original principal balance outstanding under the real estate debt securities. (2) Book value of the real estate debt securities represents outstanding principal balance adjusted for unamortized acquisition discounts, origination fees and direct origination and acquisition costs and additional interest accretion. (3) Contractual interest rate is the stated interest rate on the face of the real estate securities. Annualized effective interest rate is calculated as the actual interest income recognized in 2016 , using the interest method, annualized (if applicable) and divided by the average amortized cost basis of the investment. The annualized effective interest rate and contractual interest rate presented are as of December 31, 2016 . See "Battery Point Series B Preferred Units" below. The following summarizes the activity related to real estate debt securities for the year ended December 31, 2016 (in thousands): Real estate debt securities - December 31, 2015 $ — Face value of real estate debt securities acquired 5,000 Deferred interest receivable and interest accretion 30 Commitment fee, net of closing costs and acquisition fee (364 ) Accretion of commitment fee, net of closing costs 17 Real estate debt securities - December 31, 2016 $ 4,683
Schedule of Interest Income from Real Estate Debt Securities	For the years ended December 31, 2016 , interest income from real estate debt securities consisted of the following (in thousands): Contractual interest income $ 63 Interest accretion 30 Accretion of commitment fee, net of closing costs and acquisition fee 17 Interest income from real estate debt securities $ 110

REAL ESTATE SALES (Tables)

REAL ESTATE SALES (Tables)	12 Months Ended
	Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Revenue and Expenses of Real Estate Held-for-Sale	The following table summarizes certain revenue and expenses related to these properties for the years ended December 31, 2016 , 2015 and 2014 (in thousands): Years Ended December 31, 2016 2015 2014 Total revenues $ — $ 215 $ 1,134 Total expenses 16 645 2,473

NOTES AND BONDS PAYABLE (Tables

NOTES AND BONDS PAYABLE (Tables)	12 Months Ended
	Dec. 31, 2016
Notes and Bonds Payable [Abstract]
Schedule of Long-term Debt Instruments	As of December 31, 2016 and December 31, 2015 , the Company’s notes and bonds payable consisted of the following (dollars in thousands): Book Value as of Book Value as of Contractual Interest Rate as of December 31, 2016 (1) Effective Interest Rate at December 31, 2016 (1) Payment Type Maturity Date (2) Richardson Portfolio Mortgage Loan $ 40,594 $ 41,177 One-Month LIBOR + 2.10% 2.72% Principal & Interest 05/01/2017 Bellevue Technology Center Mortgage Loan 59,400 52,960 One-Month LIBOR + 2.25% 2.87% Principal & Interest 03/01/2017 (3) Portfolio Revolving Loan Facility (4) 11,799 47,087 One-Month LIBOR + 2.25% 2.87% Principal & Interest 05/01/2017 Portfolio Mortgage Loan 106,479 100,032 One-Month LIBOR + 2.25% 2.87% Principal & Interest 07/01/2017 Burbank Collection Mortgage Loan 9,812 9,098 One-Month LIBOR + 2.35% 3.04% Principal & Interest 09/30/2017 50 Congress Mortgage Loan 31,525 28,075 One-Month LIBOR + 1.90% 2.52% Interest Only (5) 10/01/2017 1180 Raymond Bond Payable 6,635 6,795 6.50% 6.50% Principal & Interest 09/01/2036 Central Building Mortgage Loan 27,600 24,896 One-Month LIBOR + 1.75% 2.37% Interest Only 11/13/2018 Maitland Promenade II Mortgage Loan (6) 20,877 20,182 One-Month LIBOR + 2.90% 3.52% Principal & Interest 01/01/2018 Westmoor Center Mortgage Loan 62,000 56,036 One-Month LIBOR + 2.25% 2.87% Interest Only (5) 02/01/2018 Plaza Buildings Senior Loan 109,866 111,000 One-Month LIBOR + 1.90% 2.52% Principal & Interest 01/14/2017 (7) 424 Bedford Mortgage Loan 24,832 25,358 3.91% 3.91% Principal & Interest 10/01/2022 1180 Raymond Mortgage Loan 31,000 28,100 One-Month LIBOR + 2.25% 2.87% Interest Only 12/01/2017 KBS SOR (BVI) Holdings, Ltd. Series A Debentures (8) 251,811 — 4.25% 4.25% (6) 03/01/2023 Westpark Portfolio Mortgage Loan 83,200 — One-Month LIBOR + 2.50% 3.12% Interest Only (5) 07/01/2020 353 Sacramento Mortgage Loan (9) 85,500 — One-Month LIBOR + 2.75% 3.46% Interest Only 10/14/2018 Total Notes and Bonds Payable principal outstanding 962,930 550,796 Net Premium/(Discount) on Notes and Bonds Payable (10) 88 50 Deferred financing costs, net (12,394 ) (3,523 ) Total Notes and Bonds Payable, net $ 950,624 $ 547,323 _____________________ (1) Contractual interest rate represents the interest rate in effect under the loan as of December 31, 2016 . Effective interest rate is calculated as the actual interest rate in effect as of December 31, 2016 (consisting of the contractual interest rate and contractual floor rates), using interest rate indices at December 31, 2016 , where applicable. (2) Represents the initial maturity date or the maturity date as extended as of December 31, 2016 ; subject to certain conditions, the maturity dates of certain loans may be extended beyond the date shown. (3) Subsequent to December 31, 2016 , the maturity date of the Bellevue Technology Center Mortgage Loan was extended to March 1, 2019. (4) The Portfolio Revolving Loan Facility is secured by the 1800 West Loop Building and the Iron Point Business Park. The Portfolio Revolving Loan Facility is comprised of $63.5 million of revolving debt and $12.4 million of non-revolving debt available to be used for tenant improvements, leasing commissions and capital improvements, subject to certain terms and conditions contained in the loan documents. As of December 31, 2016 , $11.8 million of non-revolving debt had been disbursed to the Company and the remaining $63.5 million of revolving debt and $0.6 million of non-revolving debt is available for future disbursements, subject to certain conditions contained in the loan documents. (5) Represents the payment type required under the loan as of December 31, 2016 . Certain future monthly payments due under this loan also include amortizing principal payments. For more information of the Company's contractual obligations under its notes and bonds payable, see five-year maturity table below. (6) Interest on the Maitland Promenade II Mortgage Loan is calculated at a variable annual rate of 290 basis points over one-month LIBOR, but at no point shall the interest rate be less than 3.25% . (7) Subsequent to December 31, 2016 , the maturity date of the Plaza Buildings Senior Loan was extended to January 14, 2018. (8) See " - Israeli Bond Financing" below. (9) As of December 31, 2016, $85.5 million had been disbursed to the Company and up to $30.0 million is available for future disbursements to be used for tenant improvements, leasing commissions and capital improvements, subject to certain terms and conditions contained in the loan documents. In addition, the Company has entered into an interest rate cap that effectively limits one-month LIBOR on up to $115.5 million of the outstanding loan balance at 3.0% effective October 14, 2016 through October 14, 2018. (10) Represents the unamortized premium/discount on notes and bonds payable due to the above- and below-market interest rates when the debt was assumed. The discount/premium is amortized over the remaining life of the notes and bonds payable.
Schedule of Maturities of Long-term Debt	The following is a schedule of maturities, including principal amortization payments, for all notes and bonds payable outstanding as of December 31, 2016 (in thousands): 2017 $ 402,153 2018 196,253 2019 52,251 2020 132,876 2021 51,241 Thereafter 128,156 $ 962,930

DERIVATIVE INSTRUMENTS (Tables)

DERIVATIVE INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional and Fair Value of Interest Rate Swaps Designated as Cash Flow Hedges	The following table summarizes the notional amount and other information related to the Company’s foreign currency collars as of December 31, 2016 . The notional amount is an indication of the extent of the Company’s involvement in each instrument at that time, but does not represent exposure to credit, interest rate or market risks (currency in thousands): Derivative Instruments Notional Amount Strike Price Trade Date Maturity Date Derivative instruments not designated as hedging instruments Foreign currency collar $ 100,000 3.72 - 3.83 ILS-USD 08/08/2016 08/08/2017 Foreign currency collar 50,000 3.67 - 3.77 ILS-USD 08/16/2016 08/16/2017 Foreign currency collar 50,000 3.68 - 3.78 ILS-USD 08/16/2016 08/16/2017 Foreign currency collar 50,000 3.67 - 3.77 ILS-USD 08/22/2016 08/22/2017 $ 250,000
Schedule of Derivative Instruments in Statement of Financial Position	The following table sets forth the fair value of the Company’s derivative instruments as well as their classification on the consolidated balance sheets as of December 31, 2016 (dollars in thousands): December 31, 2016 Derivative Instruments Balance Sheet Location Number of Instruments Fair Value Derivative instruments not designated as hedging instruments Interest rate cap Prepaid expenses and other assets 1 $ 12 Foreign currency collars Other liabilities 4 $ (3,910 )

FAIR VALUE DISCLOSURES (Tables)

FAIR VALUE DISCLOSURES (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Schedule of Face Value, Carrying Amounts and Fair Value	The following were the face values, carrying amounts and fair values of the Company’s financial instruments as of December 31, 2016 and December 31, 2015 , which carrying amounts do not approximate the fair values (in thousands): December 31, 2016 December 31, 2015 Face Value Carrying Amount Fair Value Face Value Carrying Amount Fair Value Financial assets: Real estate loan receivable $ — $ — $ — $ 27,850 $ 27,850 $ 27,850 Real estate debt securities $ 5,000 $ 4,683 $ 4,683 $ — $ — $ — Financial liabilities: Notes and bond payable $ 711,119 $ 707,169 $ 711,425 $ 550,796 $ 547,323 $ 554,007 KBS SOR (BVI) Holdings, Ltd. Series A Debentures $ 251,811 $ 243,455 $ 253,120 $ — $ — $ —
Fair Value, Assets Measured on Recurring Basis	As of December 31, 2016 , the Company measured the following assets and liabilities at fair value (in thousands): Fair Value Measurements Using Total Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Recurring Basis: Asset derivative - interest rate cap $ 12 $ — $ 12 $ — Liability derivatives - foreign currency collars $ (3,910 ) $ — $ (3,910 ) $ —

RELATED PARTY TRANSACTIONS (Tab

RELATED PARTY TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Schedule of Related Party Costs	Pursuant to the terms of these agreements, summarized below are the related-party costs incurred by the Company for the years ended December 31, 2016 , 2015 and 2014 , respectively, and any related amounts payable as of December 31, 2016 and December 31, 2015 (in thousands): Incurred Payable as of December 31, 2016 2015 2014 2016 2015 Expensed Asset management fees (1) $ 9,628 $ 8,348 $ 7,648 $ — $ — Real estate acquisition fees 2,964 — 2,231 — — Reimbursable operating expenses (2) 221 178 157 55 59 Disposition fees (3) 279 276 — — — Capitalized Acquisition fees on real estate debt securities 250 — — — — Acquisition fee on investment in unconsolidated joint venture — — 1,573 — — Acquisition fee on undeveloped land — — 67 — — $ 13,342 $ 8,802 $ 11,676 $ 55 $ 59 _____________________ (1) Amounts include asset management fees from discontinued operations. (2) The Advisor may seek reimbursement for certain employee costs under the Advisory Agreement. The Company has reimbursed the Advisor for the Company’s allocable portion of the salaries, benefits and overhead of internal audit department personnel providing services to the Company. These amounts totaled $153,000 , $153,000 and $141,000 for the years ended December 31, 2016 , 2015 and 2014 , respectively, and were the only employee costs reimbursed under the Advisory Agreement during these periods. The Company will not reimburse for employee costs in connection with services for which the Advisor earns acquisition, origination or disposition fees (other than reimbursement of travel and communication expenses) or for the salaries or benefits the Advisor or its affiliates may pay to the Company’s executive officers. In addition to the amounts above, the Company reimburses the Advisor for certain of the Company’s direct costs incurred from third parties that were initially paid by the Advisor on behalf of the Company. (3) Disposition fees with respect to real estate sold are included in the gain on sale of real estate in the accompanying consolidated statements of operations. Disposition fees with respect to the assignment of the Company's real estate loan receivable are included in general and administrative expenses in the accompanying consolidated statements of operations.

INVESTMENT IN UNCONSOLIDATED 37

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Tables)	12 Months Ended
	Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Investments in Unconsolidated Joint Ventures	Summarized financial information for the 110 William Joint Venture follows (in thousands): (Unaudited) December 31, 2016 (Unaudited) December 31, 2015 Assets: Real estate assets, net of accumulated depreciation and amortization $ 262,192 $ 269,664 Other assets 23,355 18,973 Total assets $ 285,547 $ 288,637 Liabilities and Equity: Notes payable, net (1) $ 157,628 $ 162,395 Other liabilities 12,872 13,617 Partners’ capital 115,047 112,625 Total Liabilities and Equity $ 285,547 $ 288,637 _____________________ (1) Includes (i) a first mortgage loan with an outstanding principal balance of $136.4 million and $138.6 million as of December 31, 2016 and December 31, 2015 , respectively, bearing interest at a fixed rate of 4.8% per annum and maturing on July 6, 2017 and (ii) a mezzanine loan with an outstanding principal balance of $20.0 million as of December 31, 2016 and December 31, 2015 bearing interest at a fixed rate of 9.5% per annum and maturing on July 6, 2017. The amount presented includes a premium on notes payable of $1.5 million and $4.5 million as of December 31, 2016 and 2015 , respectively, and deferred financing costs, net of $0.2 million and $0.7 million as of December 31, 2016 and 2015 , respectively. (Unaudited) For the Years Ended December 31, 2016 2015 2014 Revenues $ 33,458 $ 34,188 $ 22,536 Expenses: Operating, maintenance, and management 10,778 10,549 6,869 Real estate taxes and insurance 6,017 5,748 3,476 Real estate acquisition fees and expenses — 1 1,016 Depreciation and amortization 12,955 12,596 8,806 Interest expense 6,049 6,170 4,193 Total expenses 35,799 35,064 24,360 Total other income 63 334 36 Net loss $ (2,278 ) $ (542 ) $ (1,788 ) Company ’ s equity in loss of unconsolidated joint venture $ (1,408 ) $ (368 ) $ (1,101 ) As of December 31, 2016 and 2015 , the Company’s investments in unconsolidated joint ventures were composed of the following (dollars in thousands): Investment Balance at December 31, Joint Venture Number of Properties Location Ownership % 2016 2015 NIP Joint Venture 17 Various Less than 5.0% $ 5,305 $ 5,305 110 William Joint Venture 1 New York, New York 60.0% 70,544 69,132 $ 75,849 $ 74,437

UNAUDITED PRO FORMA FINANCIAL38

UNAUDITED PRO FORMA FINANCIAL INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2016
Business Acquisition, Pro Forma Information [Abstract]
Business Acquisition, Pro Forma Information	The following unaudited pro forma information for the years ended December 31, 2016 and 2015 has been prepared to give effect to the acquisition of the Westpark Portfolio and 353 Sacramento as if the acquisitions occurred on January 1, 2015. This pro forma information does not purport to represent what the actual results of operations of the Company would have been had the acquisitions occurred on this date, nor does it purport to predict the results of operations for future periods (in thousands). For the Years Ended December 31, 2016 2015 Revenues $ 144,674 $ 134,612 Depreciation and amortization $ 56,604 $ 53,879 Net (loss) income $ (25,298 ) $ 7,764

SELECTED QUARTERLY FINANCIAL 39

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	Presented below is a summary of the unaudited quarterly financial information for the years ended December 31, 2016 and 2015 (in thousands, except per share amounts): 2016 First Quarter Second Quarter Third Quarter Fourth Quarter Revenues $ 28,365 $ 33,866 $ 36,133 $ 35,880 Net loss $ (4,932 ) $ (1,989 ) $ (15,007 ) $ (7,198 ) Net loss attributable to common stockholders $ (4,894 ) $ (1,959 ) $ (14,951 ) $ (7,114 ) Net loss per common share, basic and diluted $ (0.08 ) $ (0.03 ) $ (0.25 ) $ (0.12 ) Distributions declared per common share $ 0.093 $ 0.093 $ 0.094 $ 0.095 2015 First Quarter Second Quarter Third Quarter Fourth Quarter Revenues $ 27,943 $ 28,667 $ 28,158 $ 27,360 Net income (loss) $ 5,385 $ 2,639 $ (277 ) $ (682 ) Net income (loss) attributable to common stockholders $ 2,235 $ 1,526 $ (462 ) $ (922 ) Net income (loss) per common share, basic and diluted $ 0.04 $ 0.03 $ (0.01 ) $ (0.02 ) Distributions declared per common share $ 0.092 $ 0.093 $ 0.095 $ 0.095

ORGANIZATION (Details)

ORGANIZATION (Details) $ in Thousands	Mar. 08, 2016USD ($)	Mar. 08, 2016ILS (₪)	Mar. 07, 2016ILS (₪)	Mar. 02, 2016ILS (₪)	Mar. 01, 2016ILS (₪)	Mar. 31, 2016	Dec. 31, 2016USD ($)aportfoliopropertyinvestmentshares	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)shares	Dec. 31, 2016USD ($)aportfoliopropertyinvestmentshares	Dec. 18, 2015certificateshares	Oct. 23, 2012USD ($)shares	Dec. 29, 2011USD ($)shares	Jan. 08, 2009shares
Organizational Structure [Line Items]
Common stock, shares authorized (in shares)							1,000,000,000	1,000,000,000		1,000,000,000
Common stock, shares issued (in shares)							56,775,767	58,696,115		56,775,767		55,249	220,994
Partnership interest in Operating Partnership							0.10%
Partnership interest in the Operating Partnership and is its sole limited partner							99.90%
Issuance of common stock, value | $							$ 12,616	$ 13,573	$ 9,911
Shares of common stock sold under dividend reinvestment plan, value | $										$ 65,400
Redemptions of common stock, value | $							38,573	30,100	$ 5,104	77,000
Common stock, value, issued | $							$ 568	$ 587		$ 568		$ 500	$ 2,000
Number of investments in unconsolidated joint venture | investment							2			2
Number of investments in debt securities | investment							1			1
Office Properties [Member]
Organizational Structure [Line Items]
Number of real estate properties | property							11			11
Office Campus [Member]
Organizational Structure [Line Items]
Number of real estate properties | property							1			1
Office Buildings, Campus [Member]
Organizational Structure [Line Items]
Number of real estate properties | property							9			9
Office Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties | portfolio							1			1
Office Buildings, Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties | property							4			4
Undeveloped Land, Portfolio [Member]
Organizational Structure [Line Items]
Real estate area of undeveloped land | a							25			25
Office/Flex/Industrial Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties | property							1			1
Office/Flex/Industrial Buildings [Member]
Organizational Structure [Line Items]
Number of real estate properties | property							21			21
Office Properties, Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties | property							3			3
Retail Property, Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties | property							1			1
Apartment Properties, Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties acquired through foreclosure | property							2			2
Undeveloped Land [Member]
Organizational Structure [Line Items]
Real estate area of undeveloped land | a							1,670			1,670
Number of investments in real estate | investment							2			2
Series A Debentures [Member] | Bonds Payable [Member]
Organizational Structure [Line Items]
Maximum borrowing capacity | ₪				₪ 1,000,000,000
Interest rate during period						4.25%
Proceeds from issuance of debt	$ 249,200	₪ 970,200,000	₪ 127,700,000		₪ 842,500,000
Principal installment payments required as percent of total debt				20.00%
Maximum [Member] | Series A Debentures [Member] | Bonds Payable [Member]
Organizational Structure [Line Items]
Interest rate during period				4.25%
Common Stock [Member]
Organizational Structure [Line Items]
Shares registered in primary offering (in shares)														100,000,000
Shares registered for sale under dividend reinvestment plan (in shares)														40,000,000
Issuance of common stock, shares							938,662	1,114,532	901,146	56,584,976
Issuance of common stock, value | $							$ 9	$ 11	$ 9	$ 561,700
Shares of common stock sold under dividend reinvestment plan, shares										6,035,169.882
Redemptions of common stock, shares							2,859,010	2,462,746	475,817	6,140,621.9524
Redemptions of common stock, value | $							$ 28	$ 24	$ 5
Common Stock [Member] | Minimum [Member]
Organizational Structure [Line Items]
Stock offering, shares authorized for issuance (in shares)														250,000
Common Stock [Member] | Maximum [Member]
Organizational Structure [Line Items]
Stock offering, shares authorized for issuance (in shares)														140,000,000
KBS Capital Advisors LLC [Member]
Organizational Structure [Line Items]
Shares held by affiliate (in shares)							20,000			20,000
KBS Strategic Opportunity BVI [Member]
Organizational Structure [Line Items]
Common stock, shares authorized (in shares)											50,000
Number of certificates issued | certificate											1
KBS Strategic Opportunity BVI [Member] | Operating Partnership [Member]
Organizational Structure [Line Items]
Common stock, shares issued (in shares)											10,000

SUMMARY OF SIGNIFICANT ACCOUN41

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Useful Life) (Details)	12 Months Ended
	Dec. 31, 2016
Building [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life	25 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful life	40 years
Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life	10 years
Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful life	40 years
Tenant Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	Shorter of lease term or expected useful life
Tenant Origination and Absorption Costs [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	Remaining term of related leases, including below-market renewal periods

SUMMARY OF SIGNIFICANT ACCOUN42

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)	Dec. 30, 2016	Jan. 09, 2016	Dec. 31, 2016USD ($)$ / shares	Sep. 30, 2016$ / shares	Jun. 30, 2016$ / shares	Mar. 31, 2016$ / shares	Dec. 31, 2015USD ($)property$ / shares	Sep. 30, 2015$ / shares	Jun. 30, 2015$ / shares	Mar. 31, 2015$ / shares	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)property$ / shares	Dec. 31, 2014USD ($)$ / shares	Dec. 31, 2016USD ($)	Dec. 08, 2016$ / shares	Jan. 04, 2016$ / shares	Dec. 08, 2015$ / shares	Dec. 29, 2014$ / shares	Dec. 09, 2014$ / shares	Apr. 06, 2014$ / shares	Mar. 25, 2014$ / shares
Summary of Significant Accounting Policies [Line Items]
Impairment charges on real estate												$ 0	$ 0	$ 579,000
Number of properties held for investment | property							1						1
Restricted cash and cash equivalents			$ 0				$ 0					0	$ 0		$ 0
Purchase price per share as percent of estimated value																					95.00%
Purchase price per share (in dollars per share) | $ / shares																	$ 13.44		$ 11.63		$ 10.71	$ 9.50
Updated primary offering price (in dollars per share) | $ / shares																$ 14.81		$ 13.44		$ 12.24		$ 11.27
Additional limitation, amount			25,000,000									25,000,000			25,000,000
Redemption value			1,000,000				1,000,000					$ 1,000,000	1,000,000		1,000,000
Maximum percentage of weighted-average shares outstanding available for redemption during any calendar year												5.00%
Redemption price percentage of most recent estimated value per share	95.00%
Share holding term												4 years
Share redemption program, termination period	10 days
Redemptions of common stock, value												$ 38,573,000	30,100,000	$ 5,104,000	77,000,000
Number of shares non-redeemable do to limitation | shares												1,013,619
Number of shares non-redeemable do to limitation, value												$ 14,300,000
Other liabilities			18,095,000				$ 14,190,000					18,095,000	$ 14,190,000		18,095,000
Remaining authorized repurchase amount			$ 12,600,000									$ 12,600,000			$ 12,600,000
Property management fee, percent fee												0.75%
Distributions declared per common share (in dollars per share) | $ / shares			$ 0.095	$ 0.094	$ 0.093	$ 0.093	$ 0.095	$ 0.095	$ 0.093	$ 0.092		$ 0.38	$ 0.38	$ 0.26
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Share holding term												1 year
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Share holding term												4 years
KBS Capital Advisors LLC [Member]
Summary of Significant Accounting Policies [Line Items]
Acquisition advisory fee, percent			1.00%									1.00%			1.00%
Monthly asset management fee, percent of acquisition expense			0.00063%									0.00063%			0.00063%
KBS Capital Advisors LLC or Affiliates [Member]
Summary of Significant Accounting Policies [Line Items]
Selling commissions fees paid, percent of sales price			1.00%									1.00%			1.00%
KBS Capital Advisors LLC, Affiliates or Unaffiliated Third Parties [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Selling commissions fees paid, percent of sales price			6.00%									6.00%			6.00%
Parent [Member]
Summary of Significant Accounting Policies [Line Items]
Redemptions of common stock, value												$ 38,573,000	$ 30,100,000	$ 5,104,000
Eighth Amended and Restated Share Redemption Program [Member] | Held for at Least One Year but Less than Four Years [Member]
Summary of Significant Accounting Policies [Line Items]
Redemption price percentage of most recent estimated value per share		97.50%
Eighth Amended and Restated Share Redemption Program [Member] | Held for Four Years [Member]
Summary of Significant Accounting Policies [Line Items]
Redemption price percentage of most recent estimated value per share		100.00%
Unfulfilled Redemption Request [Member]
Summary of Significant Accounting Policies [Line Items]
Other liabilities			$ 12,600,000				$ 3,700,000					$ 12,600,000	$ 3,700,000		$ 12,600,000
Scenario, Forecast [Member]
Summary of Significant Accounting Policies [Line Items]
Maximum number of shares redeemable per quarter, value											$ 3,000,000

REAL ESTATE HELD FOR INVESTME43

REAL ESTATE HELD FOR INVESTMENT (Narrative) (Details) ft² in Millions	Dec. 31, 2016aft²portfoliopropertyinvestment	Mar. 14, 2012unit
Real Estate Properties [Line Items]
Rentable square feet | ft²	5.5
Percentage of portfolio occupied	86.00%
Number of investments in unconsolidated joint venture | investment	2
Office/Flex/Industrial Buildings [Member]
Real Estate Properties [Line Items]
Number of real estate properties	21
Office Campus [Member]
Real Estate Properties [Line Items]
Number of real estate properties	1
Office Buildings, Campus [Member]
Real Estate Properties [Line Items]
Number of real estate properties	9
Office Portfolio [Member]
Real Estate Properties [Line Items]
Number of real estate properties | portfolio	1
Office Buildings, Portfolio [Member]
Real Estate Properties [Line Items]
Number of real estate properties	4
Undeveloped Land, Portfolio [Member]
Real Estate Properties [Line Items]
Real estate area of undeveloped land | a	25
Office Building [Member]
Real Estate Properties [Line Items]
Number of real estate properties	11
Office Properties, Portfolio [Member]
Real Estate Properties [Line Items]
Number of real estate properties	3
Retail Property, Portfolio [Member]
Real Estate Properties [Line Items]
Number of real estate properties	1
Apartment Property [Member]
Real Estate Properties [Line Items]
Number of real estate properties	2
Rentable square feet | ft²	0.3
Percentage of portfolio occupied	92.00%
Apartment Property [Member] | 1180 Raymond [Member] | Multifamily Tower [Member]
Real Estate Properties [Line Items]
Number of units in real estate property | unit		383
Undeveloped Land [Member]
Real Estate Properties [Line Items]
Real estate area of undeveloped land | a	1,670

REAL ESTATE HELD FOR INVESTME44

REAL ESTATE HELD FOR INVESTMENT (Schedule of Real Estate Investments) (Details) $ in Thousands	Sep. 07, 2016USD ($)unit	Jun. 25, 2016	Jun. 06, 2016	Jun. 05, 2016	Mar. 18, 2016	Mar. 17, 2016	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Real Estate Properties [Line Items]
Total real estate, cost							$ 1,227,207	$ 914,074
Accumulated depreciation and amortization							(120,176)	(91,560)
Total real estate, net							$ 1,107,031	822,514
Subsidiary of Common Parent [Member]
Real Estate Properties [Line Items]
Interest rate on Class A non-voting preferred membership units	10.00%
Proceeds from sale of units	$ 800
Disposed of by Sale [Member] | Subsidiary of Common Parent [Member]
Real Estate Properties [Line Items]
Number of real estate units | unit	820
Northridge Center I & II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Mar. 25, 2011
Total real estate, cost							$ 9,729
Accumulated depreciation and amortization							(2,509)
Total real estate, net							$ 7,220
Ownership %							100.00%
Iron Point Business Park [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jun. 21, 2011
Total real estate, cost							$ 22,186
Accumulated depreciation and amortization							(4,914)
Total real estate, net							$ 17,272
Ownership %							100.00%
Richardson Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							$ 41,975
Accumulated depreciation and amortization							(9,209)
Total real estate, net							$ 32,766
Palisades Central I [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 11,954
Accumulated depreciation and amortization							(2,605)
Total real estate, net							$ 9,349
Ownership %							90.00%
Palisades Central II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 18,993
Accumulated depreciation and amortization							(4,432)
Total real estate, net							$ 14,561
Ownership %							90.00%
Greenway I [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 2,924
Accumulated depreciation and amortization							(691)
Total real estate, net							$ 2,233
Ownership %							90.00%
Greenway III [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 4,970
Accumulated depreciation and amortization							(1,481)
Total real estate, net							$ 3,489
Ownership %							90.00%
Undeveloped Land [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 3,134
Accumulated depreciation and amortization							0
Total real estate, net							$ 3,134
Ownership %							90.00%
Park Highlands [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 30, 2011
Total real estate, cost							$ 34,162
Accumulated depreciation and amortization							0
Total real estate, net							$ 34,162
Ownership %		100.00%	97.62%	51.58%	51.58%	50.10%
Increase in percentage ownership		2.38%	46.04%		1.48%
Bellevue Technology Center [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jul. 31, 2012
Total real estate, cost							$ 85,897
Accumulated depreciation and amortization							(10,810)
Total real estate, net							$ 75,087
Ownership %							100.00%
Powers Ferry Landing East [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Sep. 24, 2012
Total real estate, cost							$ 9,758
Accumulated depreciation and amortization							(2,393)
Total real estate, net							$ 7,365
Ownership %							100.00%
1800 West Loop [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 4, 2012
Total real estate, cost							$ 73,623
Accumulated depreciation and amortization							(12,894)
Total real estate, net							$ 60,729
Ownership %							100.00%
West Loop I & II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 7, 2012
Total real estate, cost							$ 41,404
Accumulated depreciation and amortization							(5,921)
Total real estate, net							$ 35,483
Ownership %							100.00%
Burbank Collection [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 12, 2012
Total real estate, cost							$ 15,990
Accumulated depreciation and amortization							(1,721)
Total real estate, net							$ 14,269
Ownership %							90.00%
Austin Suburban Portfolio [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Mar. 28, 2013
Total real estate, cost							$ 78,504
Accumulated depreciation and amortization							(10,533)
Total real estate, net							$ 67,971
Ownership %							100.00%
Westmoor Center [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jun. 12, 2013
Total real estate, cost							$ 82,390
Accumulated depreciation and amortization							(12,022)
Total real estate, net							$ 70,368
Ownership %							100.00%
Central Building [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jul. 10, 2013
Total real estate, cost							$ 35,371
Accumulated depreciation and amortization							(4,013)
Total real estate, net							$ 31,358
Ownership %							100.00%
50 Congress Street [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jul. 11, 2013
Total real estate, cost							$ 53,679
Accumulated depreciation and amortization							(6,747)
Total real estate, net							$ 46,932
Ownership %							100.00%
1180 Raymond [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Aug. 20, 2013
Total real estate, cost							$ 45,834
Accumulated depreciation and amortization							(3,925)
Total real estate, net							$ 41,909
Ownership %							100.00%
Park Highlands II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 10, 2013
Total real estate, cost							$ 23,464
Accumulated depreciation and amortization							0
Total real estate, net							$ 23,464
Ownership %					100.00%	99.50%	100.00%
Increase in percentage ownership					0.50%
Maitland Promenade II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 18, 2013
Total real estate, cost							$ 31,676
Accumulated depreciation and amortization							(4,516)
Total real estate, net							$ 27,160
Ownership %							100.00%
Plaza Building [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jan. 14, 2014
Total real estate, cost							$ 199,241
Accumulated depreciation and amortization							(18,448)
Total real estate, net							$ 180,793
Ownership %							100.00%
424 Bedford [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jan. 31, 2014
Total real estate, cost							$ 34,358
Accumulated depreciation and amortization							(2,049)
Total real estate, net							$ 32,309
Ownership %							90.00%
Richardson Land II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Sep. 4, 2014
Total real estate, cost							$ 3,418
Accumulated depreciation and amortization							0
Total real estate, net							$ 3,418
Ownership %							90.00%
Westpark Portfolio [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							May 10, 2016
Total real estate, cost							$ 129,558
Accumulated depreciation and amortization							(4,550)
Total real estate, net							$ 125,008
Ownership %							100.00%
353 Sacramento [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jul. 11, 2016
Total real estate, cost							$ 174,990
Accumulated depreciation and amortization							(3,002)
Total real estate, net							$ 171,988
Ownership %							100.00%
Land [Member]
Real Estate Properties [Line Items]
Total real estate, cost							$ 322,499	223,201
Land [Member] | Northridge Center I & II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							2,234
Land [Member] | Iron Point Business Park [Member]
Real Estate Properties [Line Items]
Total real estate, cost							2,671
Land [Member] | Richardson Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							6,244
Land [Member] | Palisades Central I [Member]
Real Estate Properties [Line Items]
Total real estate, cost							1,037
Land [Member] | Palisades Central II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							810
Land [Member] | Greenway I [Member]
Real Estate Properties [Line Items]
Total real estate, cost							561
Land [Member] | Greenway III [Member]
Real Estate Properties [Line Items]
Total real estate, cost							702
Land [Member] | Undeveloped Land [Member]
Real Estate Properties [Line Items]
Total real estate, cost							3,134
Land [Member] | Park Highlands [Member]
Real Estate Properties [Line Items]
Total real estate, cost							34,162
Land [Member] | Bellevue Technology Center [Member]
Real Estate Properties [Line Items]
Total real estate, cost							25,506
Land [Member] | Powers Ferry Landing East [Member]
Real Estate Properties [Line Items]
Total real estate, cost							1,643
Land [Member] | 1800 West Loop [Member]
Real Estate Properties [Line Items]
Total real estate, cost							8,360
Land [Member] | West Loop I & II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							7,300
Land [Member] | Burbank Collection [Member]
Real Estate Properties [Line Items]
Total real estate, cost							4,175
Land [Member] | Austin Suburban Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							8,288
Land [Member] | Westmoor Center [Member]
Real Estate Properties [Line Items]
Total real estate, cost							10,058
Land [Member] | Central Building [Member]
Real Estate Properties [Line Items]
Total real estate, cost							7,015
Land [Member] | 50 Congress Street [Member]
Real Estate Properties [Line Items]
Total real estate, cost							9,876
Land [Member] | 1180 Raymond [Member]
Real Estate Properties [Line Items]
Total real estate, cost							8,292
Land [Member] | Park Highlands II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							23,464
Land [Member] | Maitland Promenade II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							3,434
Land [Member] | Plaza Building [Member]
Real Estate Properties [Line Items]
Total real estate, cost							53,040
Land [Member] | 424 Bedford [Member]
Real Estate Properties [Line Items]
Total real estate, cost							8,860
Land [Member] | Richardson Land II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							3,418
Land [Member] | Westpark Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							36,085
Land [Member] | 353 Sacramento [Member]
Real Estate Properties [Line Items]
Total real estate, cost							58,374
Buildings and Improvements [Member]
Real Estate Properties [Line Items]
Total real estate, cost							855,744	646,979
Buildings and Improvements [Member] | Northridge Center I & II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							7,495
Buildings and Improvements [Member] | Iron Point Business Park [Member]
Real Estate Properties [Line Items]
Total real estate, cost							19,515
Buildings and Improvements [Member] | Richardson Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							34,167
Buildings and Improvements [Member] | Palisades Central I [Member]
Real Estate Properties [Line Items]
Total real estate, cost							10,260
Buildings and Improvements [Member] | Palisades Central II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							17,835
Buildings and Improvements [Member] | Greenway I [Member]
Real Estate Properties [Line Items]
Total real estate, cost							2,363
Buildings and Improvements [Member] | Greenway III [Member]
Real Estate Properties [Line Items]
Total real estate, cost							3,709
Buildings and Improvements [Member] | Undeveloped Land [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Buildings and Improvements [Member] | Park Highlands [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Buildings and Improvements [Member] | Bellevue Technology Center [Member]
Real Estate Properties [Line Items]
Total real estate, cost							56,814
Buildings and Improvements [Member] | Powers Ferry Landing East [Member]
Real Estate Properties [Line Items]
Total real estate, cost							8,016
Buildings and Improvements [Member] | 1800 West Loop [Member]
Real Estate Properties [Line Items]
Total real estate, cost							60,482
Buildings and Improvements [Member] | West Loop I & II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							32,240
Buildings and Improvements [Member] | Burbank Collection [Member]
Real Estate Properties [Line Items]
Total real estate, cost							11,090
Buildings and Improvements [Member] | Austin Suburban Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							68,344
Buildings and Improvements [Member] | Westmoor Center [Member]
Real Estate Properties [Line Items]
Total real estate, cost							67,157
Buildings and Improvements [Member] | Central Building [Member]
Real Estate Properties [Line Items]
Total real estate, cost							26,720
Buildings and Improvements [Member] | 50 Congress Street [Member]
Real Estate Properties [Line Items]
Total real estate, cost							41,396
Buildings and Improvements [Member] | 1180 Raymond [Member]
Real Estate Properties [Line Items]
Total real estate, cost							37,542
Buildings and Improvements [Member] | Park Highlands II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Buildings and Improvements [Member] | Maitland Promenade II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							24,722
Buildings and Improvements [Member] | Plaza Building [Member]
Real Estate Properties [Line Items]
Total real estate, cost							138,900
Buildings and Improvements [Member] | 424 Bedford [Member]
Real Estate Properties [Line Items]
Total real estate, cost							25,498
Buildings and Improvements [Member] | Richardson Land II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Buildings and Improvements [Member] | Westpark Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							84,660
Buildings and Improvements [Member] | 353 Sacramento [Member]
Real Estate Properties [Line Items]
Total real estate, cost							110,986
Tenant Origination and Absorption Costs [Member]
Real Estate Properties [Line Items]
Total real estate, cost							48,964	$ 43,894
Tenant Origination and Absorption Costs [Member] | Northridge Center I & II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Iron Point Business Park [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Richardson Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							1,564
Tenant Origination and Absorption Costs [Member] | Palisades Central I [Member]
Real Estate Properties [Line Items]
Total real estate, cost							657
Tenant Origination and Absorption Costs [Member] | Palisades Central II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							348
Tenant Origination and Absorption Costs [Member] | Greenway I [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Greenway III [Member]
Real Estate Properties [Line Items]
Total real estate, cost							559
Tenant Origination and Absorption Costs [Member] | Undeveloped Land [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Park Highlands [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Bellevue Technology Center [Member]
Real Estate Properties [Line Items]
Total real estate, cost							3,577
Tenant Origination and Absorption Costs [Member] | Powers Ferry Landing East [Member]
Real Estate Properties [Line Items]
Total real estate, cost							99
Tenant Origination and Absorption Costs [Member] | 1800 West Loop [Member]
Real Estate Properties [Line Items]
Total real estate, cost							4,781
Tenant Origination and Absorption Costs [Member] | West Loop I & II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							1,864
Tenant Origination and Absorption Costs [Member] | Burbank Collection [Member]
Real Estate Properties [Line Items]
Total real estate, cost							725
Tenant Origination and Absorption Costs [Member] | Austin Suburban Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							1,872
Tenant Origination and Absorption Costs [Member] | Westmoor Center [Member]
Real Estate Properties [Line Items]
Total real estate, cost							5,175
Tenant Origination and Absorption Costs [Member] | Central Building [Member]
Real Estate Properties [Line Items]
Total real estate, cost							1,636
Tenant Origination and Absorption Costs [Member] | 50 Congress Street [Member]
Real Estate Properties [Line Items]
Total real estate, cost							2,407
Tenant Origination and Absorption Costs [Member] | 1180 Raymond [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Park Highlands II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Maitland Promenade II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							3,520
Tenant Origination and Absorption Costs [Member] | Plaza Building [Member]
Real Estate Properties [Line Items]
Total real estate, cost							7,301
Tenant Origination and Absorption Costs [Member] | 424 Bedford [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Richardson Land II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Tenant Origination and Absorption Costs [Member] | Westpark Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							8,813
Tenant Origination and Absorption Costs [Member] | 353 Sacramento [Member]
Real Estate Properties [Line Items]
Total real estate, cost							$ 5,630

REAL ESTATE HELD FOR INVESTME45

REAL ESTATE HELD FOR INVESTMENT (Operating Leases) (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)tenant	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Operating Leased Assets [Line Items]
Deferred rent recognized	$ 3.1	$ 8.4	$ 4.5
Deferred rent receivables	26.8	22.8
Incentive to lessee	$ 3.2	2.8
Number of tenants | tenant	650
Other Liabilities [Member]
Operating Leased Assets [Line Items]
Security deposit liability	$ 7.2	$ 5.3
Maximum [Member]
Operating Leased Assets [Line Items]
Operating lease, term	11 years 3 months 18 days
Weighted Average [Member]
Operating Leased Assets [Line Items]
Operating lease, term	3 years 7 months 6 days

REAL ESTATE HELD FOR INVESTME46

REAL ESTATE HELD FOR INVESTMENT (Future Minimum Rental Income) (Details) $ in Thousands	Dec. 31, 2016USD ($)
Real Estate [Abstract]
2,017	$ 99,868
2,018	87,056
2,019	72,682
2,020	57,188
2,021	43,201
Thereafter	90,412
Future minimum rental income	$ 450,407

REAL ESTATE HELD FOR INVESTME47

REAL ESTATE HELD FOR INVESTMENT (Highes Tenant Industry Concentrations- Grater than 10% of Annual Base Rent) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)tenant
Concentration Risk [Line Items]
Number of Tenants | tenant	650
Annualized Base Rent | $	$ 32,858
Percentage of Annualized Base Rent	31.50%
Industry - Finance [Member]
Concentration Risk [Line Items]
Number of Tenants | tenant	51
Annualized Base Rent | $	$ 11,223
Percentage of Annualized Base Rent	10.80%
Industry - Computer System Design & Programming [Member]
Concentration Risk [Line Items]
Number of Tenants | tenant	57
Annualized Base Rent | $	$ 11,161
Percentage of Annualized Base Rent	10.70%
Industry - Insurance Carriers & Related Activities [Member]
Concentration Risk [Line Items]
Number of Tenants | tenant	31
Annualized Base Rent | $	$ 10,474
Percentage of Annualized Base Rent	10.00%

REAL ESTATE HELD FOR INVESTME48

REAL ESTATE HELD FOR INVESTMENT (Geographic Concentration Risk) (Details)	12 Months Ended
	Dec. 31, 2016
Concentration Risk [Line Items]
Concentration risk, percentage	31.50%
Washington [Member] | Assets, Total [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	31.50%
California [Member] | Assets, Total [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	15.50%
Texas [Member] | Assets, Total [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	15.30%

REAL ESTATE HELD FOR INVESTME49

REAL ESTATE HELD FOR INVESTMENT (Property Damages) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Real Estate Properties [Line Items]
Real estate insurance, maximum deductable per incident	$ 100,000
Property damages	1,500,000
Estimated insurance recoveries	1,400,000
Operating, maintenance, and management	41,906,000	$ 37,512,000	$ 35,957,000
Damaged Properties [Member]
Real Estate Properties [Line Items]
Operating, maintenance, and management	$ 100,000

REAL ESTATE HELD FOR INVESTME50

REAL ESTATE HELD FOR INVESTMENT (Acquisitions) (Details) $ in Thousands	Jul. 11, 2016USD ($)aft²property	May 10, 2016USD ($)aft²property	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2016USD ($)property	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			$ 1,227,207				$ 914,074				$ 1,227,207	$ 914,074
Above-market leases, net			633				1,038				633	1,038
Below-market leases, net			6,551				2,735				6,551	2,735
Real estate acquisition fees and expenses											543	0	$ 2,177
Revenues			35,880	$ 36,133	$ 33,866	$ 28,365	27,360	$ 28,158	$ 28,667	$ 27,943	134,244	112,128	106,154
Operating expenses											162,006	123,396	$ 128,860
Land [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			322,499				223,201				322,499	223,201
Buildings and Improvements [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			855,744				646,979				855,744	646,979
Tenant Origination and Absorption Costs [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			48,964				$ 43,894				48,964	$ 43,894
Westpark Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net rentable area | ft²		778,472
Area of land | a		41
Purchase price		$ 125,800
Above-market leases, net			100								100
Below-market leases, net			600								600
Westpark Portfolio [Member] | Tenant Origination and Absorption Costs [Member] | Weighted Average [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Remaining amortization period		4 years 4 months 24 days
Westpark Portfolio [Member] | Above-Market Lease Assets [Member] | Weighted Average [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Remaining amortization period		2 years 8 months 12 days
Westpark Portfolio [Member] | Below-Market Lease Liabilities [Member] | Weighted Average [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Remaining amortization period		3 years 6 months
Westpark Portfolio [Member] | Land [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			36,100								36,100
Westpark Portfolio [Member] | Buildings and Improvements [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			81,200								81,200
Westpark Portfolio [Member] | Tenant Origination and Absorption Costs [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			9,000								9,000
Westpark Portfolio [Member] | Office/Flex/Industrial Buildings [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties acquired | property		21
353 Sacramento [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net rentable area | ft²	284,751
Area of land | a	0.35
Purchase price	$ 168,000
Above-market leases, net			6,100								6,100
353 Sacramento [Member] | Tenant Origination and Absorption Costs [Member] | Weighted Average [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Remaining amortization period	3 years 3 months 18 days
353 Sacramento [Member] | Below-Market Lease Liabilities [Member] | Weighted Average [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Remaining amortization period	2 years 7 months 6 days
353 Sacramento [Member] | Land [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			58,400								58,400
353 Sacramento [Member] | Buildings and Improvements [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			110,000								110,000
353 Sacramento [Member] | Tenant Origination and Absorption Costs [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate, cost			$ 5,700								$ 5,700
353 Sacramento [Member] | Office Building [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties acquired | property	1										1
Acquisitions of 2016 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate acquisition fees and expenses											$ 3,500
Revenues											14,700
Operating expenses											$ 7,700

TENANT ORIGINATION AND ABSORP51

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities [Abstract]
Tenant Origination And Absorption Costs, Cost	$ 48,964	$ 43,894
Tenant Origination and Absorption Costs, Accumulated Amortization	(23,989)	(22,749)
Tenant Origination and Absorption Costs, Net Amount	24,975	21,145
Above-Market Lease Assets, Cost	1,877	2,399
Above-Market Lease Assets, Accumulated Amortization	(1,244)	(1,361)
Above-Market Lease Assets, Net Amount	633	1,038
Below-Market Lease Liabilities, Cost	(10,945)	(5,826)
Below-Market Lease Liabilities, Accumulated Amortization	4,394	3,091
Below-Market Lease Liabilities, Net Amount	(6,551)	(2,735)
Tenant Origination And Absorption Costs, Amortization	(10,850)	(10,555)	$ (15,020)
Above-Market Lease Assets, Amortization	(459)	(1,023)	(1,070)
Below-Market Lease Liabilities, Amortization	$ 2,789	$ 1,668	$ 2,409

TENANT ORIGINATION AND ABSORP52

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES (Remaining Unamortized Balance) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Below Market Lease, Net, Amortization Income, Fiscal Year Maturity [Abstract]
2,017	$ 3,501
2,018	1,558
2,019	751
2,020	501
2,021	178
Thereafter	62
Net Amount	$ 6,551
Tenant Origination and Absorption Costs [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	3 years 9 months 18 days
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,017	$ (9,614)
2,018	(6,014)
2,019	(3,835)
2,020	(2,423)
2,021	(1,484)
Thereafter	(1,605)
Net Amount	$ (24,975)
Above-Market Lease Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	3 years 1 month 6 days
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,017	$ (296)
2,018	(139)
2,019	(89)
2,020	(65)
2,021	(44)
Thereafter	0
Net Amount	$ (633)
Below-Market Lease Liabilities [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	2 years 7 months 6 days

TENANT ORIGINATION AND ABSORP53

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities [Line Items]
Tax abatement asset	$ 6,300	$ 7,200
Amortization expense	52,051	44,739	$ 47,063
Property Tax Abatement Intangible Asset [Member]
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities [Line Items]
Amortization expense	$ 1,000	$ 1,000	$ 900

REAL ESTATE LOAN RECEIVABLE (Sc

REAL ESTATE LOAN RECEIVABLE (Schedule of Real Estate Loans Receivable) (Details) $ in Thousands	Apr. 22, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)loans-receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate loans receivable | loans-receivable			1
Book Value		$ 0	$ 27,850
University House First Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from collection of notes receivable	$ 31,600
Mortgages [Member] | University House First Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Date Originated		Mar. 20, 2013
Outstanding Principal Balance		$ 0
Book Value		$ 0	$ 27,850

REAL ESTATE LOAN RECEIVABLE (55

REAL ESTATE LOAN RECEIVABLE (Schedule of Interest Income from Real Estate Loans Receivable) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Contractual interest income (including deferred interest)	$ 3,655	$ 1,540	$ 2,752
Accretion of closing costs, origination fees and extension fees, net	0	428	614
Interest income from real estate loans receivable	$ 3,655	$ 1,968	$ 3,366

REAL ESTATE DEBT SECURITIES (Na

REAL ESTATE DEBT SECURITIES (Narrative) (Details) $ / shares in Units, $ in Millions	Oct. 28, 2016USD ($)$ / sharesshares	Apr. 28, 2017	Apr. 28, 2018	Oct. 28, 2019	Dec. 31, 2016instrument
Investment [Line Items]
Number of debt investments | instrument					1,000
Point Trust LLC [Member] | Series B Preferred Units [Member]
Investment [Line Items]
Investment (in shares) | shares	25,000
Share price (in dollars per share) | $ / shares	$ 1,000
Payments to acquire investments | $	$ 25
Investment, increment of additional purchase (in shares) | shares	5,000
Exit fee, percent of redemption price	1.00%
Point Trust LLC [Member] | Series B Preferred Units [Member] | Scenario, Forecast [Member]
Investment [Line Items]
Payment of quarterly distributions, percent		7.00%	9.00%	12.00%
Point Trust LLC [Member] | Preferred Units [Member]
Investment [Line Items]
Investment (in shares) | shares	5,000
Payments to acquire investments | $	$ 4.4
Investments, equity commitment fee | $	$ 0.6

REAL ESTATE DEBT SECURITIES (Sc

REAL ESTATE DEBT SECURITIES (Schedule of Investments in Debt Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investment [Line Items]
Outstanding Principal Balance	$ 5,000	$ 0
Book Value	4,683	$ 0
Point Trust LLC [Member] | Series B Preferred Units [Member]
Investment [Line Items]
Outstanding Principal Balance	5,000
Book Value	$ 4,683
Contractual Interest Rate	7.00%
Annualized Effective Interest Rate	13.10%

REAL ESTATE DEBT SECURITIES (58

REAL ESTATE DEBT SECURITIES (Schedule of Activity of Real Estate Securities) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Held-to-maturity Securities [Roll Forward]
Real estate debt securities - December 31, 2015	$ 0
Real estate debt securities - December 31, 2016	5,000
Debt Securities [Member]
Held-to-maturity Securities [Roll Forward]
Real estate debt securities - December 31, 2015	0
Face value of real estate debt securities acquired	5,000
Deferred interest receivable and interest accretion	30
Commitment fee, net of closing costs and acquisition fee	(364)
Accretion of commitment fee, net of closing costs	17
Real estate debt securities - December 31, 2016	$ 4,683

REAL ESTATE DEBT SECURITIES (In

REAL ESTATE DEBT SECURITIES (Interest Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investment [Line Items]
Contractual interest income	$ 44	$ 18	$ 22
Debt Securities [Member]
Investment [Line Items]
Contractual interest income	63
Interest accretion	30
Accretion of commitment fee, net of closing costs and acquisition fee	17
Interest income from real estate debt securities	$ 110

REAL ESTATE SALES (Narrative) (

REAL ESTATE SALES (Narrative) (Details) - property	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Disposed of by Sale [Member] | Office Building [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties disposed	2	1

REAL ESTATE SALES (Revenue and

REAL ESTATE SALES (Revenue and Expenses for Real Estate Held-for-Sale) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Total revenues	$ 0	$ 215	$ 1,134
Total expenses	$ 16	$ 645	$ 2,473

NOTES AND BONDS PAYABLE (Narrat

NOTES AND BONDS PAYABLE (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Notes and Bonds Payable [Abstract]
Interest expense	$ 29,249	$ 14,986	$ 15,598
Amortization of deferred financing costs, net of discontinued operations	4,300	2,700	2,800
Interest capitalized	2,025	1,856	$ 1,987
Interest payable	5,300	1,200
Debt Instrument [Line Items]
Deferred finance costs	12,500	4,700
Notes and Bonds Payable [Member]
Debt Instrument [Line Items]
Deferred finance costs	12,400	3,500
Prepaid Expenses and Other Current Assets [Member]
Debt Instrument [Line Items]
Deferred finance costs	$ 100	$ 1,200

NOTES AND BONDS PAYABLE (Schedu

NOTES AND BONDS PAYABLE (Schedule of Long-term Debt Instruments) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	May 01, 2013
Debt Instrument [Line Items]
Total Notes and Bond Payable principal outstanding	$ 962,930,000	$ 550,796,000
Net Premium/Discount on Notes and Bond Payable	88,000	50,000
Deferred financing costs, net	(12,394,000)	(3,523,000)
Total notes payable and bond payable, net	950,624,000	547,323,000
Interest Rate Cap [Member]
Debt Instrument [Line Items]
Notional amount	$ 115,500,000
One-month LIBOR [Member] | Interest Rate Cap [Member]
Debt Instrument [Line Items]
Variable interest rate	3.00%
Portfolio Revolving Loan Facility [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 63,500,000
Portfolio Revolving Loan Facility [Member] | Non-Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 12,400,000
Mortgages [Member] | Richardson Portfolio [Member]
Debt Instrument [Line Items]
Notes payable	$ 40,594,000	41,177,000
Interest rate, effective percentage	2.72%
Mortgages [Member] | Richardson Portfolio [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.10%
Mortgages [Member] | Bellevue Technology Center [Member]
Debt Instrument [Line Items]
Notes payable	$ 59,400,000	52,960,000
Interest rate, effective percentage	2.87%
Mortgages [Member] | Bellevue Technology Center [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Mortgages [Member] | Portfolio Revolving Loan Facility [Member]
Debt Instrument [Line Items]
Notes payable	$ 11,799,000	47,087,000
Interest rate, effective percentage	2.87%
Mortgages [Member] | Portfolio Revolving Loan Facility [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unused borrowing capacity, amount	$ 63,500,000
Mortgages [Member] | Portfolio Revolving Loan Facility [Member] | Non-Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Amount outstanding	11,800,000
Unused borrowing capacity, amount	$ 600,000
Mortgages [Member] | Portfolio Revolving Loan Facility [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Mortgages [Member] | Portfolio Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable	$ 106,479,000	100,032,000
Interest rate, effective percentage	2.87%
Mortgages [Member] | Portfolio Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Mortgages [Member] | Burbank Collection Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable	$ 9,812,000	9,098,000
Interest rate, effective percentage	3.04%
Mortgages [Member] | Burbank Collection Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.35%
Mortgages [Member] | 50 Congress Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable	$ 31,525,000	28,075,000
Interest rate, effective percentage	2.52%
Mortgages [Member] | 50 Congress Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.90%
Mortgages [Member] | 1180 Raymond Bond [Member]
Debt Instrument [Line Items]
Bonds payable	$ 6,635,000	6,795,000
Contractual interest rate, percentage	6.50%
Interest rate, effective percentage	6.50%
Mortgages [Member] | Central Building [Member]
Debt Instrument [Line Items]
Notes payable	$ 27,600,000	24,896,000
Interest rate, effective percentage	2.37%
Mortgages [Member] | Central Building [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Mortgages [Member] | Maitland Promenade II Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable	$ 20,877,000	20,182,000
Interest rate, effective percentage	3.52%
Mortgages [Member] | Maitland Promenade II Mortgage Loan [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Interest rate, effective percentage	3.25%
Mortgages [Member] | Maitland Promenade II Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.90%
Mortgages [Member] | Westmoor Center Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable	$ 62,000,000	56,036,000
Interest rate, effective percentage	2.87%
Mortgages [Member] | Westmoor Center Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Mortgages [Member] | Plaza Buildings Senior Loan [Member]
Debt Instrument [Line Items]
Notes payable	$ 109,866,000	111,000,000
Interest rate, effective percentage	2.52%
Mortgages [Member] | 424 Bedford Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable	$ 24,832,000	25,358,000
Contractual interest rate, percentage	3.91%
Interest rate, effective percentage	3.91%
Mortgages [Member] | 1180 Raymond Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable	$ 31,000,000	28,100,000
Interest rate, effective percentage	2.87%
Mortgages [Member] | 1180 Raymond Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Mortgages [Member] | KBS SOR (BVI) Holdings, Ltd. [Member]
Debt Instrument [Line Items]
Notes payable	$ 251,811,000	0
Contractual interest rate, percentage	4.25%
Interest rate, effective percentage	4.25%
Mortgages [Member] | Westpark Portfolio Mortgage Loan [Member]
Debt Instrument [Line Items]
Bonds payable	$ 83,200,000	0
Interest rate, effective percentage	3.12%
Mortgages [Member] | Westpark Portfolio Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
Mortgages [Member] | 353 Sacramento Mortgage Loan [Member]
Debt Instrument [Line Items]
Bonds payable	$ 85,500,000	$ 0
Interest rate, effective percentage	3.46%
Amount outstanding	$ 85,500,000
Unused borrowing capacity, amount	$ 30,000,000
Mortgages [Member] | 353 Sacramento Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.75%

NOTES AND BONDS PAYABLE (Sche64

NOTES AND BONDS PAYABLE (Schedule of Maturities of Long-term Debt) (Details) $ in Thousands	Dec. 31, 2016USD ($)
Notes and Bonds Payable [Abstract]
2,017	$ 402,153
2,018	196,253
2,019	52,251
2,020	132,876
2,021	51,241
Thereafter	128,156
Notes and bond payable outstanding	$ 962,930

NOTES AND BONDS PAYABLE (Israel

NOTES AND BONDS PAYABLE (Israeli Bond Financing) (Details) - Bonds Payable [Member] - Series A Debentures [Member] $ in Millions	Mar. 08, 2016USD ($)	Mar. 08, 2016ILS (₪)	Mar. 07, 2016ILS (₪)	Mar. 02, 2016ILS (₪)	Mar. 01, 2016ILS (₪)	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016ILS (₪)
Debt Instrument [Line Items]
Maximum borrowing capacity | ₪				₪ 1,000,000,000
Interest rate during period						4.25%
Proceeds from issuance of debt	$ 249.2	₪ 970,200,000	₪ 127,700,000		₪ 842,500,000
Principal installment payments required as percent of total debt				20.00%
Payments of debt issuance costs | $						$ 9.8
Funded amount							$ 5.4	₪ 20,800,000
Required expense reserve							$ 0.3	₪ 1,000,000
Maximum [Member]
Debt Instrument [Line Items]
Interest rate during period				4.25%

DERIVATIVE INSTRUMENTS (Notiona

DERIVATIVE INSTRUMENTS (Notional Amount) (Details)	12 Months Ended
	Dec. 31, 2016USD ($)
Interest Rate Cap [Member]
Derivative [Line Items]
Notional Amount	$ 115,500,000
Interest Rate Cap [Member] | One-month LIBOR [Member]
Derivative [Line Items]
Variable interest rate	3.00%
Not Designated as Hedging Instrument [Member] | Foreign Currency Collars [Member]
Derivative [Line Items]
Notional Amount	$ 250,000,000
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 1 [Member]
Derivative [Line Items]
Notional Amount	$ 100,000,000
Maturity Date	Aug. 8, 2017
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 1 [Member] | Minimum [Member]
Derivative [Line Items]
Reference Rate	3.72
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 1 [Member] | Maximum [Member]
Derivative [Line Items]
Reference Rate	3.83
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 2 [Member]
Derivative [Line Items]
Notional Amount	$ 50,000,000
Maturity Date	Aug. 16, 2017
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 2 [Member] | Minimum [Member]
Derivative [Line Items]
Reference Rate	3.67
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 2 [Member] | Maximum [Member]
Derivative [Line Items]
Reference Rate	3.77
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 3 [Member]
Derivative [Line Items]
Notional Amount	$ 50,000,000
Maturity Date	Aug. 16, 2017
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 3 [Member] | Minimum [Member]
Derivative [Line Items]
Reference Rate	3.68
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 3 [Member] | Maximum [Member]
Derivative [Line Items]
Reference Rate	3.78
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 4 [Member]
Derivative [Line Items]
Notional Amount	$ 50,000,000
Maturity Date	Aug. 22, 2017
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 4 [Member] | Minimum [Member]
Derivative [Line Items]
Reference Rate	3.67
Not Designated as Hedging Instrument [Member] | Foreign Currency Collar 4 [Member] | Maximum [Member]
Derivative [Line Items]
Reference Rate	3.77

DERIVATIVE INSTRUMENTS (Fair Va

DERIVATIVE INSTRUMENTS (Fair Value) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)instrument	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Derivative [Line Items]
Foreign currency transaction loss, net	$ 2,997	$ 0	$ 0
Foreign Currency Collars [Member]
Derivative [Line Items]
Loss recognized on derivatives	3,900
Foreign currency transaction loss, net	$ 900
Not Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative [Line Items]
Number of Instruments | instrument	1
Derivative Asset	$ 12
Not Designated as Hedging Instrument [Member] | Foreign Currency Collars [Member] | Other Liabilities [Member]
Derivative [Line Items]
Number of Instruments | instrument	4
Derivative Liability	$ (3,910)

FAIR VALUE DISCLOSURES (Schedul

FAIR VALUE DISCLOSURES (Schedule of Face Value, Carrying Amounts and Fair Value) (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Real estate loans receivable, Face Value	$ 0	$ 27,850,000
Real estate debt securities, Face Value	5,000,000	0
Real estate debt securities, Value	4,683,000	0
Notes and bond payable, Face Value	711,119,000	550,796,000
Series A Debentures [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and bond payable, Face Value	251,811,000	0
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Real estate loans receivable, Value	0	27,850,000
Real estate debt securities, Value		0
Notes and bond payable, Value	707,169,000	547,323,000
Carrying Amount [Member] | Series A Debentures [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and bond payable, Value	243,455,000	0
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Real estate loans receivable, Value	0	27,850,000
Real estate debt securities, Value	4,683,000	0
Notes and bond payable, Value	711,425,000	554,007,000
Fair Value [Member] | Series A Debentures [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and bond payable, Value	$ 253,120,000	$ 0

FAIR VALUE DISCLOSURES (Sched69

FAIR VALUE DISCLOSURES (Schedule of Assets at Fair Value) (Details) - Recurring Basis [Member] $ in Thousands	Dec. 31, 2016USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Assets, at Fair Value	$ 12
Liability derivatives - foreign currency collars	(3,910)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Assets, at Fair Value	0
Liability derivatives - foreign currency collars	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Assets, at Fair Value	12
Liability derivatives - foreign currency collars	(3,910)
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Assets, at Fair Value	0
Liability derivatives - foreign currency collars	$ 0

RELATED PARTY TRANSACTIONS (Det

RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Administrative fees, amount paid	$ 153	$ 153	$ 141
Advisor and Dealer Manager [Member]
Related Party Transaction [Line Items]
Incurred	13,342	8,802	11,676
Payable as of	55	59
Advisor and Dealer Manager [Member] | Asset Management Fees [Member]
Related Party Transaction [Line Items]
Expenses	9,628	8,348	7,648
Payable as of	0	0
Advisor and Dealer Manager [Member] | Real Estate Acquisition Fee [Member]
Related Party Transaction [Line Items]
Expenses	2,964	0	2,231
Payable as of	0	0
Advisor and Dealer Manager [Member] | Reimbursement of Operating Expenses [Member]
Related Party Transaction [Line Items]
Expenses	221	178	157
Payable as of	55	59
Advisor and Dealer Manager [Member] | Dispositon Fees [Member]
Related Party Transaction [Line Items]
Expenses	279	276	0
Payable as of	0	0
Advisor and Dealer Manager [Member] | Acquisition Fees on Real Estate Debt Securities [Member]
Related Party Transaction [Line Items]
Incurred	250	0	0
Payable as of	0	0
Advisor and Dealer Manager [Member] | Acquisition Fee on Investment in Unconsolidated Joint Venture [Member]
Related Party Transaction [Line Items]
Incurred	0	0	1,573
Payable as of	0	0
Advisor and Dealer Manager [Member] | Acquisition Fee on Undeveloped Land [Member]
Related Party Transaction [Line Items]
Incurred	0	0	$ 67
Payable as of	0	$ 0
KBS Capital Advisors LLC [Member] | Property Insurance Rebate [Member]
Related Party Transaction [Line Items]
Due from related parties	100
KBS Capital Advisors LLC [Member] | Legal and Professional Fees Reimbursement [Member]
Related Party Transaction [Line Items]
Due from related parties	$ 100

INVESTMENT IN UNCONSOLIDATED 71

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Investments in Unconsolidated Joint Ventures) (Details) $ in Thousands	Dec. 31, 2016USD ($)property	Dec. 31, 2015USD ($)	May 02, 2014
Schedule of Equity Method Investments [Line Items]
Investment Balance	$ 75,849	$ 74,437
OCM NIP JV Holdings, L.P. and HC KBS NIP JV, LLC (“HC-KBS”) [Member]
Schedule of Equity Method Investments [Line Items]
Investment Balance	$ 5,305	5,305
OCM NIP JV Holdings, L.P. and HC KBS NIP JV, LLC (“HC-KBS”) [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	5.00%
110 William Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Number of Properties | property	1
Ownership %	60.00%		60.00%
Investment Balance	$ 70,544	$ 69,132

INVESTMENT IN UNCONSOLIDATED 72

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Narrative) (Details) $ in Thousands	May 09, 2012USD ($)	Dec. 31, 2016USD ($)ft²property	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	May 02, 2014ft²	May 18, 2012ft²property
Schedule of Equity Method Investments [Line Items]
Rentable square feet | ft²		5,500,000
Initial capital contribution		$ 2,820	$ 2,760	$ 58,987
Investments in unconsolidated joint ventures		75,849	74,437
NIP Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Rentable square feet | ft²						8,400,000
Initial capital contribution	$ 8,000
Investments in unconsolidated joint ventures		$ 5,305	5,305
Income (loss) from unconsolidated joint venture			2,200
NIP Joint Venture [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest		5.00%
NIP Joint Venture [Member] | Industrial [Member]
Schedule of Equity Method Investments [Line Items]
Number of real estate properties | property						17
110 William Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Number of real estate properties | property		1
Rentable square feet | ft²					928,157
Ownership interest		60.00%			60.00%
Investments in unconsolidated joint ventures		$ 70,544	69,132
Area of land | ft²					0.8
Unamortized acquisition fees and expenses		$ 1,500	$ 1,600
110 William Joint Venture [Member] | 110 William JV Partner [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest					40.00%

INVESTMENT IN UNCONSOLIDATED 73

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Summarized Financial Information - 110 William Joint Venture) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Real estate assets, net of accumulated depreciation and amortization	$ 1,107,031				$ 822,514				$ 1,107,031	$ 822,514
Total assets	1,310,116				1,004,214				1,310,116	1,004,214
Other liabilities	18,095				14,190				18,095	14,190
Total liabilities and equity	1,310,116				1,004,214				1,310,116	1,004,214
Income Statement [Abstract]
Revenues	35,880	$ 36,133	$ 33,866	$ 28,365	27,360	$ 28,158	$ 28,667	$ 27,943	134,244	112,128	$ 106,154
Operating, maintenance, and management									41,906	37,512	35,957
Real estate taxes and insurance									16,887	14,565	14,189
Real estate acquisition fees and expenses									543	0	2,177
Depreciation and amortization									52,051	44,739	47,063
Interest expense									29,249	14,986	15,598
Total expenses									162,006	123,396	128,860
Net (loss) income attributable to common stockholders	(7,114)	$ (14,951)	$ (1,959)	$ (4,894)	(922)	$ (462)	$ 1,526	$ 2,235	(28,918)	2,444	(23,194)
Company’s equity in loss of unconsolidated joint venture									(1,408)	(368)	(1,101)
Debt, outstanding amount	962,930								962,930
Premium on notes payable	88				50				88	50
Deferred financing costs, net	$ 12,394				3,523				$ 12,394	3,523
First Mortgage Loan [Member]
Income Statement [Abstract]
Contractual interest rate, percentage	4.80%								4.80%
Mezzanine Loan [Member]
Balance Sheet Related Disclosures [Abstract]
Notes payable, net	$ 20,000				20,000				$ 20,000	20,000
Income Statement [Abstract]
Contractual interest rate, percentage	9.50%								9.50%
110 William Joint Venture [Member]
Balance Sheet Related Disclosures [Abstract]
Real estate assets, net of accumulated depreciation and amortization	$ 262,192				269,664				$ 262,192	269,664
Other assets	23,355				18,973				23,355	18,973
Total assets	285,547				288,637				285,547	288,637
Notes payable, net	157,628				162,395				157,628	162,395
Other liabilities	12,872				13,617				12,872	13,617
Partners’ capital	115,047				112,625				115,047	112,625
Total liabilities and equity	285,547				288,637				285,547	288,637
Income Statement [Abstract]
Revenues									33,458	34,188	22,536
Operating, maintenance, and management									10,778	10,549	6,869
Real estate taxes and insurance									6,017	5,748	3,476
Real estate acquisition fees and expenses									0	1	1,016
Depreciation and amortization									12,955	12,596	8,806
Interest expense									6,049	6,170	4,193
Total expenses									35,799	35,064	24,360
Total other income									63	334	36
Net (loss) income attributable to common stockholders									(2,278)	(542)	(1,788)
Company’s equity in loss of unconsolidated joint venture										(368)	$ (1,101)
110 William Joint Venture [Member] | Mortgages [Member] | First Mortgage Loan [Member]
Income Statement [Abstract]
Debt, outstanding amount	136,400				138,600				136,400	138,600
110 William Joint Venture [Member] | Notes Payable, Other Payables [Member]
Income Statement [Abstract]
Premium on notes payable	1,500				4,500				1,500	4,500
Deferred financing costs, net	$ 200				$ 700				$ 200	$ 700

UNAUDITED PRO FORMA FINANCIAL74

UNAUDITED PRO FORMA FINANCIAL INFORMATION (Narrative) (Details) $ in Millions	Jul. 11, 2016property	Dec. 31, 2016USD ($)property	Dec. 31, 2015USD ($)
Westpark Portfolio [Member] | Office Portfolio [Member]
Business Acquisition [Line Items]
Number of real estate properties acquired		1
353 Sacramento [Member] | Office Building [Member]
Business Acquisition [Line Items]
Number of real estate properties acquired	1	1
Westpark Portfolio and 353 Sacramento [Member]
Business Acquisition [Line Items]
Acquisition related costs | $		$ 3.5	$ 3.5

UNAUDITED PRO FORMA FINANCIAL75

UNAUDITED PRO FORMA FINANCIAL INFORMATION (Unaudited Pro Forma Basis) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition, Pro Forma Information [Abstract]
Revenues	$ 144,674	$ 134,612
Depreciation and amortization	56,604	53,879
Net (loss) income	$ (25,298)	$ 7,764

SELECTED QUARTERLY FINANCIAL 76

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 35,880	$ 36,133	$ 33,866	$ 28,365	$ 27,360	$ 28,158	$ 28,667	$ 27,943	$ 134,244	$ 112,128	$ 106,154
Net (loss) income	(7,198)	(15,007)	(1,989)	(4,932)	(682)	(277)	2,639	5,385	(29,126)	7,132	(23,748)
Net income (loss) attributable to common stockholders	$ (7,114)	$ (14,951)	$ (1,959)	$ (4,894)	$ (922)	$ (462)	$ 1,526	$ 2,235	$ (28,918)	$ 2,444	$ (23,194)
Net loss per common share, basic and diluted (in dollars per share)	$ (0.12)	$ (0.25)	$ (0.03)	$ (0.08)	$ (0.02)	$ (0.01)	$ 0.03	$ 0.04	$ (0.50)	$ 0.04	$ (0.39)
Distributions declared per common share (in dollars per share)	$ 0.095	$ 0.094	$ 0.093	$ 0.093	$ 0.095	$ 0.095	$ 0.093	$ 0.092	$ 0.38	$ 0.38	$ 0.26

SUBSEQUENT EVENTS (Acquisition

SUBSEQUENT EVENTS (Acquisition and Financing of Crown Pointe) (Details)	Feb. 14, 2017USD ($)ft²propertytenantextension	Dec. 31, 2016USD ($)ft²tenant
Subsequent Event [Line Items]
Rentable square feet | ft²		5,500,000
Number of tenants | tenant		650
Interest Rate Cap [Member]
Subsequent Event [Line Items]
Notional amount		$ 115,500,000
One-month LIBOR [Member] | Interest Rate Cap [Member]
Subsequent Event [Line Items]
Variable interest rate		3.00%
Subsequent Event [Member] | Crown Pointe Mortgage Loan [Member] | Interest Rate Cap [Member]
Subsequent Event [Line Items]
Notional amount	$ 46,900,000
Subsequent Event [Member] | Crown Pointe Mortgage Loan [Member] | One-month LIBOR [Member] | Interest Rate Cap [Member]
Subsequent Event [Line Items]
Variable interest rate	3.00%
Subsequent Event [Member] | Crown Pointe Mortgage Loan [Member] | Mortgages [Member] | Secured Debt [Member]
Subsequent Event [Line Items]
Current capacity	$ 62,500,000
Amount outstanding	50,500,000
Unused borrowing capacity, amount	$ 12,000,000
Number of extensions | extension	2
Extension period	12 months
Guaranty provided as a percent of outstanding loan amount	25.00%
Subsequent Event [Member] | Crown Pointe Mortgage Loan [Member] | Mortgages [Member] | Secured Debt [Member] | One-month LIBOR [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	2.60%
Subsequent Event [Member] | Crown Pointe Mortgage Loan [Member] | Mortgages [Member] | Secured Debt [Member] | Earn-out Advance [Member]
Subsequent Event [Line Items]
Unused borrowing capacity, amount	$ 2,500,000
Subsequent Event [Member] | Crown Pointe Mortgage Loan [Member] | Mortgages [Member] | Secured Debt [Member] | Tenant Improvements [Member]
Subsequent Event [Line Items]
Unused borrowing capacity, amount	$ 9,500,000
Subsequent Event [Member] | Office Building [Member] | Crown Pointe [Member]
Subsequent Event [Line Items]
Number of real estate properties acquired | property	2
Rentable square feet | ft²	499,968
Consideration transferred	$ 83,400,000
Percent of property leased	72.00%
Number of tenants | tenant	59
Weighted-average remaining lease term	3 years 6 months

SUBSEQUENT EVENTS (110 William

SUBSEQUENT EVENTS (110 William Street Refinancing) (Details)	Mar. 06, 2017USD ($)instrumentextension	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	May 02, 2014USD ($)
Subsequent Event [Line Items]
Face amount		$ 711,119,000	$ 550,796,000
Interest Rate Cap [Member]
Subsequent Event [Line Items]
Notional amount		$ 115,500,000
One-month LIBOR [Member] | Interest Rate Cap [Member]
Subsequent Event [Line Items]
Variable interest rate		3.00%
110 William Street Existing Loans [Member] | Mortgages [Member]
Subsequent Event [Line Items]
Face amount				$ 141,500,000
110 William Street Existing Loans [Member] | Mezzanine Loan [Member]
Subsequent Event [Line Items]
Face amount				$ 20,000,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Extinguishment of debt	$ 156,000,000
Subsequent Event [Member] | Refinancing Loans [Member] | Interest Rate Cap [Member]
Subsequent Event [Line Items]
Notional amount	275,000,000
Subsequent Event [Member] | Refinancing Loans [Member] | Interest Rate Cap [Member] | Maximum [Member]
Subsequent Event [Line Items]
Notional amount	$ 300,000,000
Subsequent Event [Member] | Refinancing Loans [Member] | One-month LIBOR [Member] | Interest Rate Cap [Member]
Subsequent Event [Line Items]
Number of instruments | instrument	3
Variable interest rate	3.00%
Subsequent Event [Member] | Refinancing Loans [Member] | Mortgages [Member]
Subsequent Event [Line Items]
Number of extensions | extension	3
Extension period	1 year
Subsequent Event [Member] | 110 William Street Mortgage Loan [Member] | Mortgages [Member]
Subsequent Event [Line Items]
Face amount	$ 232,300,000
Amount outstanding	205,000,000
Unused borrowing capacity, amount	$ 27,300,000
Subsequent Event [Member] | 110 William Street Mortgage Loan [Member] | Mortgages [Member] | One-month LIBOR [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	2.2472%
Subsequent Event [Member] | 110 William Street Senior Mezzanine Loan [Member] | Mezzanine Loan [Member]
Subsequent Event [Line Items]
Face amount	$ 33,800,000
Amount outstanding	29,850,000
Unused borrowing capacity, amount	$ 4,000,000
Subsequent Event [Member] | 110 William Street Senior Mezzanine Loan [Member] | Mezzanine Loan [Member] | One-month LIBOR [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	6.25%
Subsequent Event [Member] | 110 William Street Junior Mezzanine Loan [Member] | Mezzanine Loan [Member]
Subsequent Event [Line Items]
Face amount	$ 33,800,000
Amount outstanding	29,850,000
Unused borrowing capacity, amount	$ 4,000,000
Subsequent Event [Member] | 110 William Street Junior Mezzanine Loan [Member] | Mezzanine Loan [Member] | One-month LIBOR [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	6.25%

SUBSEQUENT EVENTS (Distribution

SUBSEQUENT EVENTS (Distribution Declared) (Details) - $ / shares	Mar. 09, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Distributions declared per common share (in dollars per share)		$ 0.095	$ 0.094	$ 0.093	$ 0.093	$ 0.095	$ 0.095	$ 0.093	$ 0.092	$ 0.38	$ 0.38	$ 0.26
Subsequent Event [Member] | Dividend Declared [Member]
Subsequent Event [Line Items]
Distributions declared per common share (in dollars per share)	$ 0.09246575

SCHEDULE III REAL ESTATE ASSE80

SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION (Schedule) (Details) $ in Thousands	Sep. 07, 2016USD ($)unit	Jun. 25, 2016	Jun. 06, 2016	Jun. 05, 2016	Mar. 18, 2016	Mar. 17, 2016	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Real Estate and Accumulated Depreciation [Line Items]
Gross Amount at which Carried at Close of Period, Total							$ 1,227,207	$ 914,074	$ 919,259	$ 668,018
Accumulated Depreciation and Amortization							(120,176)	$ (91,560)	$ (64,171)	$ (29,859)
Aggregate cost of real estate for federal income tax purposes							1,300,000
Debt, outstanding amount							$ 962,930
Subsidiary of Common Parent [Member]
Real Estate and Accumulated Depreciation [Line Items]
Interest rate on Class A non-voting preferred membership units	10.00%
Proceeds from sale of units	$ 800
Subsidiary of Common Parent [Member] | Disposed of by Sale [Member]
Real Estate and Accumulated Depreciation [Line Items]
Number of real estate units | unit	820
Park Highlands [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership percentage		100.00%	97.62%	51.58%	51.58%	50.10%
Increase in percentage ownership		2.38%	46.04%		1.48%
Park Highlands II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership percentage					100.00%	99.50%	100.00%
Increase in percentage ownership					0.50%
Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Land							$ 303,839
Initial Cost to Company, Building and Improvements							845,703
Initial Cost to Company, Total							1,149,542
Cost Capitalized Subsequent to Acquisition							77,665
Gross Amount at which Carried at Close of Period, Land							322,499
Gross Amount at which Carried at Close of Period, Building and Improvements							904,708
Gross Amount at which Carried at Close of Period, Total							1,227,207
Accumulated Depreciation and Amortization							$ (120,176)
Northridge Center I & II [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Initial Cost to Company, Land							$ 2,234
Initial Cost to Company, Building and Improvements							4,457
Initial Cost to Company, Total							6,691
Cost Capitalized Subsequent to Acquisition							3,038
Gross Amount at which Carried at Close of Period, Land							2,234
Gross Amount at which Carried at Close of Period, Building and Improvements							7,495
Gross Amount at which Carried at Close of Period, Total							9,729
Accumulated Depreciation and Amortization							$ (2,509)
Original Date of Construction							1985/1989
Date Acquired or Foreclosed on							Mar. 25, 2011
Iron Point Business Park [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Initial Cost to Company, Land							$ 2,671
Initial Cost to Company, Building and Improvements							16,576
Initial Cost to Company, Total							19,247
Cost Capitalized Subsequent to Acquisition							2,939
Gross Amount at which Carried at Close of Period, Land							2,671
Gross Amount at which Carried at Close of Period, Building and Improvements							19,515
Gross Amount at which Carried at Close of Period, Total							22,186
Accumulated Depreciation and Amortization							$ (4,914)
Original Date of Construction							1999/2001
Date Acquired or Foreclosed on							Jun. 21, 2011
Richardson Portfolio [Member] | Secured Debt [Member]
Real Estate and Accumulated Depreciation [Line Items]
Debt, outstanding amount							$ 40,600
Richardson Portfolio [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances							40,594
Initial Cost to Company, Land							5,107
Initial Cost to Company, Building and Improvements							30,998
Initial Cost to Company, Total							36,105
Cost Capitalized Subsequent to Acquisition							5,870
Gross Amount at which Carried at Close of Period, Land							6,244
Gross Amount at which Carried at Close of Period, Building and Improvements							35,731
Gross Amount at which Carried at Close of Period, Total							41,975
Accumulated Depreciation and Amortization							$ (9,209)
Palisades Central I [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							90.00%
Initial Cost to Company, Land							$ 1,037
Initial Cost to Company, Building and Improvements							8,628
Initial Cost to Company, Total							9,665
Cost Capitalized Subsequent to Acquisition							2,289
Gross Amount at which Carried at Close of Period, Land							1,037
Gross Amount at which Carried at Close of Period, Building and Improvements							10,917
Gross Amount at which Carried at Close of Period, Total							11,954
Accumulated Depreciation and Amortization							$ (2,605)
Original Date of Construction							1,980
Date Acquired or Foreclosed on							Nov. 23, 2011
Palisades Central II [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							90.00%
Initial Cost to Company, Land							$ 810
Initial Cost to Company, Building and Improvements							17,117
Initial Cost to Company, Total							17,927
Cost Capitalized Subsequent to Acquisition							1,066
Gross Amount at which Carried at Close of Period, Land							810
Gross Amount at which Carried at Close of Period, Building and Improvements							18,183
Gross Amount at which Carried at Close of Period, Total							18,993
Accumulated Depreciation and Amortization							$ (4,432)
Original Date of Construction							1,985
Date Acquired or Foreclosed on							Nov. 23, 2011
Greenway I [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							90.00%
Initial Cost to Company, Land							$ 561
Initial Cost to Company, Building and Improvements							1,170
Initial Cost to Company, Total							1,731
Cost Capitalized Subsequent to Acquisition							1,193
Gross Amount at which Carried at Close of Period, Land							561
Gross Amount at which Carried at Close of Period, Building and Improvements							2,363
Gross Amount at which Carried at Close of Period, Total							2,924
Accumulated Depreciation and Amortization							$ (691)
Original Date of Construction							1,983
Date Acquired or Foreclosed on							Nov. 23, 2011
Greenway III [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							90.00%
Initial Cost to Company, Land							$ 702
Initial Cost to Company, Building and Improvements							4,083
Initial Cost to Company, Total							4,785
Cost Capitalized Subsequent to Acquisition							185
Gross Amount at which Carried at Close of Period, Land							702
Gross Amount at which Carried at Close of Period, Building and Improvements							4,268
Gross Amount at which Carried at Close of Period, Total							4,970
Accumulated Depreciation and Amortization							$ (1,481)
Original Date of Construction							1,983
Date Acquired or Foreclosed on							Nov. 23, 2011
Undeveloped Land [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							90.00%
Initial Cost to Company, Land							$ 1,997
Initial Cost to Company, Building and Improvements							0
Initial Cost to Company, Total							1,997
Cost Capitalized Subsequent to Acquisition							1,137
Gross Amount at which Carried at Close of Period, Land							3,134
Gross Amount at which Carried at Close of Period, Building and Improvements							0
Gross Amount at which Carried at Close of Period, Total							3,134
Accumulated Depreciation and Amortization							$ 0
Date Acquired or Foreclosed on							Nov. 23, 2011
Park Highlands [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances							$ 0
Initial Cost to Company, Land							20,307
Initial Cost to Company, Building and Improvements							0
Initial Cost to Company, Total							20,307
Cost Capitalized Subsequent to Acquisition							13,855
Gross Amount at which Carried at Close of Period, Land							34,162
Gross Amount at which Carried at Close of Period, Building and Improvements							0
Gross Amount at which Carried at Close of Period, Total							34,162
Accumulated Depreciation and Amortization							$ 0
Date Acquired or Foreclosed on							Dec. 30, 2011
Bellevue Technology Center [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 59,400
Initial Cost to Company, Land							25,506
Initial Cost to Company, Building and Improvements							52,411
Initial Cost to Company, Total							77,917
Cost Capitalized Subsequent to Acquisition							7,980
Gross Amount at which Carried at Close of Period, Land							25,506
Gross Amount at which Carried at Close of Period, Building and Improvements							60,391
Gross Amount at which Carried at Close of Period, Total							85,897
Accumulated Depreciation and Amortization							$ (10,810)
Original Date of Construction							1973-2000
Date Acquired or Foreclosed on							Jul. 31, 2012
Powers Ferry Landing East [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Initial Cost to Company, Land							$ 1,643
Initial Cost to Company, Building and Improvements							3,761
Initial Cost to Company, Total							5,404
Cost Capitalized Subsequent to Acquisition							4,354
Gross Amount at which Carried at Close of Period, Land							1,643
Gross Amount at which Carried at Close of Period, Building and Improvements							8,115
Gross Amount at which Carried at Close of Period, Total							9,758
Accumulated Depreciation and Amortization							$ (2,393)
Original Date of Construction							1980/1982/1985
Date Acquired or Foreclosed on							Sep. 24, 2012
1800 West Loop [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Initial Cost to Company, Land							$ 8,360
Initial Cost to Company, Building and Improvements							59,292
Initial Cost to Company, Total							67,652
Cost Capitalized Subsequent to Acquisition							5,971
Gross Amount at which Carried at Close of Period, Land							8,360
Gross Amount at which Carried at Close of Period, Building and Improvements							65,263
Gross Amount at which Carried at Close of Period, Total							73,623
Accumulated Depreciation and Amortization							$ (12,894)
Original Date of Construction							1,982
Date Acquired or Foreclosed on							Dec. 4, 2012
West Loop I & II [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Initial Cost to Company, Land							$ 7,300
Initial Cost to Company, Building and Improvements							29,742
Initial Cost to Company, Total							37,042
Cost Capitalized Subsequent to Acquisition							4,362
Gross Amount at which Carried at Close of Period, Land							7,300
Gross Amount at which Carried at Close of Period, Building and Improvements							34,104
Gross Amount at which Carried at Close of Period, Total							41,404
Accumulated Depreciation and Amortization							$ (5,921)
Original Date of Construction							1980/1981
Date Acquired or Foreclosed on							Dec. 7, 2012
Burbank Collection [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							90.00%
Encumbrances							$ 9,812
Initial Cost to Company, Land							4,175
Initial Cost to Company, Building and Improvements							8,799
Initial Cost to Company, Total							12,974
Cost Capitalized Subsequent to Acquisition							3,016
Gross Amount at which Carried at Close of Period, Land							4,175
Gross Amount at which Carried at Close of Period, Building and Improvements							11,815
Gross Amount at which Carried at Close of Period, Total							15,990
Accumulated Depreciation and Amortization							$ (1,721)
Original Date of Construction							2,008
Date Acquired or Foreclosed on							Dec. 12, 2012
Austin Suburban Portfolio [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Initial Cost to Company, Land							$ 8,288
Initial Cost to Company, Building and Improvements							67,745
Initial Cost to Company, Total							76,033
Cost Capitalized Subsequent to Acquisition							2,471
Gross Amount at which Carried at Close of Period, Land							8,288
Gross Amount at which Carried at Close of Period, Building and Improvements							70,216
Gross Amount at which Carried at Close of Period, Total							78,504
Accumulated Depreciation and Amortization							$ (10,533)
Original Date of Construction							1985/1986/2000
Date Acquired or Foreclosed on							Mar. 28, 2013
Westmoor Center [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 62,000
Initial Cost to Company, Land							10,058
Initial Cost to Company, Building and Improvements							73,510
Initial Cost to Company, Total							83,568
Cost Capitalized Subsequent to Acquisition							(1,178)
Gross Amount at which Carried at Close of Period, Land							10,058
Gross Amount at which Carried at Close of Period, Building and Improvements							72,332
Gross Amount at which Carried at Close of Period, Total							82,390
Accumulated Depreciation and Amortization							$ (12,022)
Original Date of Construction							1998/1999
Date Acquired or Foreclosed on							Jun. 12, 2013
Central Building [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 27,600
Initial Cost to Company, Land							7,015
Initial Cost to Company, Building and Improvements							26,124
Initial Cost to Company, Total							33,139
Cost Capitalized Subsequent to Acquisition							2,232
Gross Amount at which Carried at Close of Period, Land							7,015
Gross Amount at which Carried at Close of Period, Building and Improvements							28,356
Gross Amount at which Carried at Close of Period, Total							35,371
Accumulated Depreciation and Amortization							$ (4,013)
Original Date of Construction							1,907
Date Acquired or Foreclosed on							Jul. 10, 2013
50 Congress Street [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 31,525
Initial Cost to Company, Land							9,876
Initial Cost to Company, Building and Improvements							43,455
Initial Cost to Company, Total							53,331
Cost Capitalized Subsequent to Acquisition							348
Gross Amount at which Carried at Close of Period, Land							9,876
Gross Amount at which Carried at Close of Period, Building and Improvements							43,803
Gross Amount at which Carried at Close of Period, Total							53,679
Accumulated Depreciation and Amortization							$ (6,747)
Original Date of Construction							1910/1915
Date Acquired or Foreclosed on							Jul. 11, 2013
1180 Raymond [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 6,635
Initial Cost to Company, Land							8,292
Initial Cost to Company, Building and Improvements							37,651
Initial Cost to Company, Total							45,943
Cost Capitalized Subsequent to Acquisition							(109)
Gross Amount at which Carried at Close of Period, Land							8,292
Gross Amount at which Carried at Close of Period, Building and Improvements							37,542
Gross Amount at which Carried at Close of Period, Total							45,834
Accumulated Depreciation and Amortization							$ (3,925)
Original Date of Construction							1,929
Date Acquired or Foreclosed on							Aug. 20, 2013
Park Highlands II [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 0
Initial Cost to Company, Land							20,118
Initial Cost to Company, Building and Improvements							0
Initial Cost to Company, Total							20,118
Cost Capitalized Subsequent to Acquisition							3,346
Gross Amount at which Carried at Close of Period, Land							23,464
Gross Amount at which Carried at Close of Period, Building and Improvements							0
Gross Amount at which Carried at Close of Period, Total							23,464
Accumulated Depreciation and Amortization							$ 0
Date Acquired or Foreclosed on							Dec. 10, 2013
Maitland Promenade II [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 20,877
Initial Cost to Company, Land							3,434
Initial Cost to Company, Building and Improvements							27,282
Initial Cost to Company, Total							30,716
Cost Capitalized Subsequent to Acquisition							960
Gross Amount at which Carried at Close of Period, Land							3,434
Gross Amount at which Carried at Close of Period, Building and Improvements							28,242
Gross Amount at which Carried at Close of Period, Total							31,676
Accumulated Depreciation and Amortization							$ (4,516)
Original Date of Construction							2,001
Date Acquired or Foreclosed on							Dec. 18, 2013
Plaza Buildings [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 109,866
Initial Cost to Company, Land							53,040
Initial Cost to Company, Building and Improvements							133,157
Initial Cost to Company, Total							186,197
Cost Capitalized Subsequent to Acquisition							13,044
Gross Amount at which Carried at Close of Period, Land							53,040
Gross Amount at which Carried at Close of Period, Building and Improvements							146,201
Gross Amount at which Carried at Close of Period, Total							199,241
Accumulated Depreciation and Amortization							$ (18,448)
Original Date of Construction							1978/1983
Date Acquired or Foreclosed on							Jan. 14, 2014
424 Bedford [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							90.00%
Encumbrances							$ 24,832
Initial Cost to Company, Land							8,860
Initial Cost to Company, Building and Improvements							24,820
Initial Cost to Company, Total							33,680
Cost Capitalized Subsequent to Acquisition							678
Gross Amount at which Carried at Close of Period, Land							8,860
Gross Amount at which Carried at Close of Period, Building and Improvements							25,498
Gross Amount at which Carried at Close of Period, Total							34,358
Accumulated Depreciation and Amortization							$ (2,049)
Original Date of Construction							2,010
Date Acquired or Foreclosed on							Jan. 31, 2014
Richardson Land II [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							90.00%
Encumbrances							$ 0
Initial Cost to Company, Land							3,096
Initial Cost to Company, Building and Improvements							0
Initial Cost to Company, Total							3,096
Cost Capitalized Subsequent to Acquisition							322
Gross Amount at which Carried at Close of Period, Land							3,418
Gross Amount at which Carried at Close of Period, Building and Improvements							0
Gross Amount at which Carried at Close of Period, Total							3,418
Accumulated Depreciation and Amortization							$ 0
Date Acquired or Foreclosed on							Sep. 4, 2014
Westpark Portfolio [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 83,200
Initial Cost to Company, Land							36,085
Initial Cost to Company, Building and Improvements							90,227
Initial Cost to Company, Total							126,312
Cost Capitalized Subsequent to Acquisition							3,246
Gross Amount at which Carried at Close of Period, Land							36,085
Gross Amount at which Carried at Close of Period, Building and Improvements							93,473
Gross Amount at which Carried at Close of Period, Total							129,558
Accumulated Depreciation and Amortization							$ (4,550)
Original Date of Construction							1984-1992
Date Acquired or Foreclosed on							May 10, 2016
353 Sacramento [Member] | Properties Held for Investment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percent							100.00%
Encumbrances							$ 85,500
Initial Cost to Company, Land							58,374
Initial Cost to Company, Building and Improvements							115,696
Initial Cost to Company, Total							174,070
Cost Capitalized Subsequent to Acquisition							920
Gross Amount at which Carried at Close of Period, Land							58,374
Gross Amount at which Carried at Close of Period, Building and Improvements							116,616
Gross Amount at which Carried at Close of Period, Total							174,990
Accumulated Depreciation and Amortization							$ (3,002)
Original Date of Construction							1,982
Date Acquired or Foreclosed on							Jul. 11, 2016
Northridge Center I & II, Powers Ferry Landing East, West Loop I & II and the Austin Suburban Portfolio [Member] | Secured Debt [Member]
Real Estate and Accumulated Depreciation [Line Items]
Debt, outstanding amount							$ 106,500
1800 West Loop and Iron Point Business Park [Member] | Secured Debt [Member]
Real Estate and Accumulated Depreciation [Line Items]
Debt, outstanding amount							$ 11,800

SCHEDULE III REAL ESTATE ASSE81

SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION (Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Real Estate
Balance at the beginning of the year	$ 914,074	$ 919,259	$ 668,018
Acquisitions	300,382	0	227,339
Improvements	33,909	32,385	36,942
Write-off of fully depreciated and fully amortized assets	(19,220)	(13,212)	(10,362)
Impairments	0	0	(697)
Loss due to property damages	(1,938)	(2,260)	(707)
Sales	0	(22,098)	(1,274)
Balance at the end of the year	1,227,207	914,074	919,259
Accumulated depreciation and amortization:
Balance at the beginning of the year	91,560	64,171	29,859
Depreciation and amortization expense	47,836	41,513	44,848
Write-off of fully depreciated and fully amortized assets	(19,220)	(13,212)	(10,362)
Impairments	0	0	(118)
Sales	0	(912)	(56)
Balance at the end of the year	$ 120,176	$ 91,560	$ 64,171