Pacific Oak Strategic Opportunity REIT (PCOK) 10-Q 12 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 05, 2017
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-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		56,675,205

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Real estate held for investment, net	$ 1,192,127	$ 1,107,031
Real estate debt securities, net	9,754	4,683
Total real estate and real estate-related investments, net	1,201,881	1,111,714
Cash and cash equivalents	55,880	40,432
Restricted cash	23,348	24,018
Investments in unconsolidated joint ventures	16,538	75,849
Rents and other receivables, net	29,518	28,264
Due from affiliate	269	0
Above-market leases, net	544	633
Prepaid expenses and other assets	35,698	29,206
Total assets	1,363,676	1,310,116
Liabilities and equity
Notes and bonds payable, net	1,018,101	950,624
Accounts payable and accrued liabilities	30,520	26,624
Due to affiliate	27	55
Below-market leases, net	6,533	6,551
Other liabilities	15,396	18,095
Redeemable common stock payable	12,013	12,617
Total liabilities	1,082,590	1,014,566
Commitments and contingencies (Note 11)
Redeemable common stock	0	0
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, 56,708,525 and 56,775,767 shares issued and outstanding as of March 31, 2017 and December 31, 2016, respectively	567	568
Additional paid-in capital	455,221	455,373
Cumulative distributions and net losses	(176,628)	(162,289)
Total KBS Strategic Opportunity REIT, Inc. stockholders’ equity	279,160	293,652
Noncontrolling interests	1,926	1,898
Total equity	281,086	295,550
Total liabilities and equity	$ 1,363,676	$ 1,310,116

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	56,708,525	56,775,767
Common stock, shares outstanding	56,708,525	56,775,767

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Rental income	$ 30,646	$ 22,831
Tenant reimbursements	5,637	4,754
Other operating income	1,553	780
Interest income from real estate debt securities	160	0
Total revenues	37,996	28,365
Expenses:
Operating, maintenance, and management	10,908	9,520
Real estate taxes and insurance	4,737	3,874
Asset management fees to affiliate	2,748	2,088
General and administrative expenses	1,744	1,137
Foreign currency transaction loss, net	4,671	303
Depreciation and amortization	14,600	11,008
Interest expense	9,386	5,176
Total expenses	48,794	33,106
Other income (loss):
Income from unconsolidated joint venture	1,869	0
Other interest income	25	5
Equity in loss of unconsolidated joint venture	(154)	(196)
Total other income (loss), net	1,740	(191)
Net loss	(9,058)	(4,932)
Net (income) loss attributable to noncontrolling interests	(34)	38
Net loss attributable to common stockholders	$ (9,092)	$ (4,894)
Net loss per common share, basic and diluted (in dollars per share)	$ (0.16)	$ (0.08)
Weighted-average number of common shares outstanding, basic and diluted (in shares)	56,782,447	58,699,129

CONSOLIDATED STATEMENTS OF EQUI

CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Total Stockholders' Equity [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Cumulative Distributions and Net Losses [Member]	Noncontrolling Interest [Member]
Balance, shares at Dec. 31, 2015			58,696,115
Balance, value at Dec. 31, 2015	$ 408,790	$ 393,363	$ 587	$ 504,303	$ (111,527)	$ 15,427
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(29,126)	(28,918)			(28,918)	(208)
Issuance of common stock, shares			938,662
Issuance of common stock, value	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, value	(38,573)	(38,573)	$ (28)	(38,545)
Distributions declared	(21,844)	(21,844)			(21,844)
Acquisitions of noncontrolling interests	(37,986)	(23,942)		(23,942)		(14,044)
Other offering costs	(7)	(7)		(7)
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)	1,898
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(9,058)	(9,092)			(9,092)	34
Issuance of common stock, shares			197,428
Issuance of common stock, value	2,924	2,924	$ 2	2,922
Transfers from redeemable common stock	677	677		677
Redemptions of common stock, shares			(264,670)
Redemptions of common stock, value	(3,754)	(3,754)	$ (3)	(3,751)
Distributions declared	(5,247)	(5,247)			(5,247)
Noncontrolling interests contributions	1					1
Distributions to noncontrolling interests	$ (7)					(7)
Balance, shares at Mar. 31, 2017	56,708,525		56,708,525
Balance, value at Mar. 31, 2017	$ 281,086	$ 279,160	$ 567	$ 455,221	$ (176,628)	$ 1,926

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities:
Net loss	$ (9,058)	$ (4,932)	$ (29,126)
Adjustments to reconcile net loss to net cash provided by operating activities:
Loss due to property damages	0	421
Equity in loss of unconsolidated joint venture	154	196
Depreciation and amortization	14,600	11,008
Unrealized loss on derivative instrument	57	0
Deferred rent	(925)	(556)
Bad debt expense	(36)	210
Amortization of above- and below-market leases, net	(894)	(188)
Amortization of deferred financing costs	1,299	721
Interest accretion on real estate securities	(69)	0
Net amortization of discount and (premium) on bond and notes payable	11	9
Foreign currency transaction loss, net	4,671	303
Changes in assets and liabilities:
Rents and other receivables	(340)	(773)
Prepaid expenses and other assets	(3,396)	(3,970)
Accounts payable and accrued liabilities	(3,767)	(647)
Due from affiliate	(269)	(141)
Due to affiliates	(28)	(41)
Other liabilities	1,381	178
Net cash provided by operating activities	3,391	1,798
Cash Flows from Investing Activities:
Acquisitions of real estate	(82,235)	0
Improvements to real estate	(5,493)	(6,683)
Insurance proceeds received for property damages	744	700
Purchase of interest rate cap	(107)	0
Investment in unconsolidated joint venture	0	(600)
Distributions of capital from unconsolidated joint ventures	59,157	0
Investment in real estate debt securities, net	(5,000)	0
Funding of development obligations	(159)	(842)
Net cash used in investing activities	(33,093)	(7,425)
Cash Flows from Financing Activities:
Proceeds from notes and bonds payable	87,405	286,300
Principal payments on notes and bonds payable	(35,808)	(13,645)
Payments of deferred financing costs	(1,329)	(8,824)
Payments to redeem common stock	(3,681)	(44)
Payments of other offering costs	(140)	0
Distributions paid	(2,323)	(2,271)
Noncontrolling interests contributions	1	167
Distributions to noncontrolling interests	(7)	0
Acquisitions of noncontrolling interests	0	(741)
Net cash provided by financing activities	44,118	260,942
Effect of exchange rate changes on cash, cash equivalents and restricted cash	362	8,811
Net increase in cash, cash equivalents and restricted cash	14,778	264,126
Cash, cash equivalents and restricted cash, beginning of period	79,228	292,991	64,450	$ 28,865
Cash, cash equivalents and restricted cash, end of period	79,228	292,991	$ 64,450
Supplemental Disclosure of Cash Flow Information:
Interest paid, net of capitalized interest of $564 and $458 for the three months ended March 31, 2017 and 2016, respectively	10,390	3,584
Supplemental Disclosure of Noncash Investing and Financing Activities:
Application of escrow deposits to acquisition of real estate	2,000	0
Increase in deferred financing payable	0	331
Increase in accrued improvements to real estate	7,858	122
Increase in redeemable common stock payable	677	10,855
Distributions paid to common stockholders through common stock issuances pursuant to the dividend reinvestment plan	$ 2,924	$ 3,201

CONSOLIDATED STATEMENTS OF CAS7

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Interest capitalized	$ 564	$ 458

ORGANIZATION

ORGANIZATION	3 Months Ended
	Mar. 31, 2017
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 March 31, 2017 , the Company had sold 6,232,598 shares of common stock under its dividend reinvestment plan for gross offering proceeds of $68.3 million . Also, as of March 31, 2017 , the Company had redeemed 6,405,292 shares for $80.8 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 March 31, 2017 , the Company consolidated 21 real estate investments comprised of 12 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, and owned two investments in unconsolidated joint ventures and an investment in real estate debt securities.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES There have been no significant changes to the Company’s accounting policies since it filed its audited financial statements in its Annual Report on Form 10-K for the year ended December 31, 2016 , except for the adoption of ASU No. 2017-01 on January 1, 2017. For further information about the Company’s accounting policies, refer to the Company’s consolidated financial statements and notes thereto for the year ended December 31, 2016 included in the Company’s Annual Report on Form 10-K filed with the SEC. Principles of Consolidation and Basis of Presentation The accompanying unaudited consolidated financial statements and condensed notes thereto have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information as contained within the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) and the rules and regulations of the SEC, including the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, the unaudited consolidated financial statements do not include all of the information and footnotes required by GAAP for audited financial statements. In the opinion of management, the financial statements for the unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Operating results for the three months ended March 31, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . The consolidated financial statements include the accounts of the Company, REIT Holdings, the Operating Partnership, KBS Strategic Opportunity BVI 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. 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 the prior period. 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. 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 three months ended March 31, 2017 and 2016 . Distributions declared per share were $0.09246575 and $0.09323770 during the three months ended March 31, 2017 and 2016 , respectively. Square Footage, Occupancy and Other Measures Any references to square footage, occupancy or annualized base rent are unaudited and outside the scope of the Company’s independent registered public accounting firm’s review of the Company’s financial statements in accordance with the standards of the United States Public Company Accounting Oversight Board. Recently Issued Accounting Standards Updates 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 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 asset acquisitions (as opposed to business combinations). Transaction costs associated with asset acquisitions are capitalized, while transaction costs associated with business combinations will continue to be expensed as incurred.

REAL ESTATE HELD FOR INVESTMENT

REAL ESTATE HELD FOR INVESTMENT	3 Months Ended
	Mar. 31, 2017
Real Estate [Abstract]
REAL ESTATE FOR INVESTMENT	REAL ESTATE HELD FOR INVESTMENT As of March 31, 2017 , the Company owned 12 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 encompassing, in the aggregate, approximately 6.0 million rentable square feet. As of March 31, 2017 , these properties were 84% 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 March 31, 2017 and December 31, 2016 , respectively (in thousands): March 31, 2017 December 31, 2016 Land $ 346,475 $ 322,499 Buildings and improvements 922,790 855,744 Tenant origination and absorption costs 53,626 48,964 Total real estate, cost 1,322,891 1,227,207 Accumulated depreciation and amortization (130,764 ) (120,176 ) Total real estate, net $ 1,192,127 $ 1,107,031 The following table provides summary information regarding the Company’s real estate held for investment as of March 31, 2017 (in thousands): Property Date City State Property Type Land Building Tenant Origination and Absorption Total Accumulated Depreciation and Amortization Total Ownership % Northridge Center I & II 03/25/2011 Atlanta GA Office $ 2,234 $ 7,335 $ — $ 9,569 $ (2,563 ) $ 7,006 100.0 % Iron Point Business Park 06/21/2011 Folsom CA Office 2,671 19,525 — 22,196 (5,182 ) 17,014 100.0 % Richardson Portfolio: Palisades Central I 11/23/2011 Richardson TX Office 1,037 10,423 657 12,117 (2,779 ) 9,338 90.0 % Palisades Central II 11/23/2011 Richardson TX Office 810 17,817 256 18,883 (4,456 ) 14,427 90.0 % Greenway I 11/23/2011 Richardson TX Office 561 2,399 — 2,960 (753 ) 2,207 90.0 % Greenway III 11/23/2011 Richardson TX Office 702 3,800 559 5,061 (1,564 ) 3,497 90.0 % Undeveloped Land 11/23/2011 Richardson TX Undeveloped Land 3,134 — — 3,134 — 3,134 90.0 % Total Richardson Portfolio 6,244 34,439 1,472 42,155 (9,552 ) 32,603 Park Highlands (1) 12/30/2011 North Las Vegas NV Undeveloped Land 35,173 — — 35,173 — 35,173 (1) Bellevue Technology Center 07/31/2012 Bellevue WA Office 25,506 56,960 3,577 86,043 (11,580 ) 74,463 100.0 % Powers Ferry Landing East 09/24/2012 Atlanta GA Office 1,643 8,016 99 9,758 (2,602 ) 7,156 100.0 % 1800 West Loop 12/04/2012 Houston TX Office 8,360 60,453 4,634 73,447 (13,447 ) 60,000 100.0 % West Loop I & II 12/07/2012 Houston TX Office 7,300 32,280 1,793 41,373 (6,287 ) 35,086 100.0 % Burbank Collection 12/12/2012 Burbank CA Retail 4,175 11,915 725 16,815 (1,852 ) 14,963 90.0 % Austin Suburban Portfolio 03/28/2013 Austin TX Office 8,288 68,870 1,513 78,671 (10,723 ) 67,948 100.0 % Westmoor Center 06/12/2013 Westminster CO Office 10,058 72,537 5,175 87,770 (12,994 ) 74,776 100.0 % Central Building 07/10/2013 Seattle WA Office 7,015 26,802 1,428 35,245 (4,033 ) 31,212 100.0 % 50 Congress Street 07/11/2013 Boston MA Office 9,876 41,383 2,265 53,524 (7,065 ) 46,459 100.0 % 1180 Raymond 08/20/2013 Newark NJ Apartment 8,292 37,872 — 46,164 (4,256 ) 41,908 100.0 % Park Highlands II 12/10/2013 North Las Vegas NV Undeveloped Land 23,839 — — 23,839 — 23,839 100.0 % Maitland Promenade II 12/18/2013 Orlando FL Office 3,434 25,040 3,520 31,994 (4,956 ) 27,038 100.0 % Plaza Buildings 01/14/2014 Bellevue WA Office 53,040 139,005 7,228 199,273 (20,168 ) 179,105 100.0 % 424 Bedford 01/31/2014 Brooklyn NY Apartment 8,860 25,521 — 34,381 (2,236 ) 32,145 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 85,172 8,636 129,893 (6,150 ) 123,743 100.0 % 353 Sacramento 07/11/2016 San Francisco CA Office 58,374 112,836 5,572 176,782 (4,552 ) 172,230 100.0 % Crown Pointe 02/14/2017 Dunwoody GA Office 22,590 56,829 5,989 85,408 (566 ) 84,842 100.0 % $ 346,475 $ 922,790 $ 53,626 $ 1,322,891 $ (130,764 ) $ 1,192,127 _____________________ (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. 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 March 31, 2017 , 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 11.0 years with a weighted-average remaining term of 3.5 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 $7.9 million and $7.2 million as of March 31, 2017 and December 31, 2016 , respectively. During the three months ended March 31, 2017 and 2016 , the Company recognized deferred rent from tenants of $0.9 million and $0.6 million , respectively, net of lease incentive amortization. As of March 31, 2017 and December 31, 2016 , the cumulative deferred rent receivable balance, including unamortized lease incentive receivables, was $27.8 million and $26.8 million , respectively, and is included in rents and other receivables on the accompanying balance sheets. The cumulative deferred rent balance included $3.0 million and $3.2 million of unamortized lease incentives as of March 31, 2017 and December 31, 2016 , 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 March 31, 2017 , the future minimum rental income from the Company’s properties, excluding apartment leases, under non-cancelable operating leases was as follows (in thousands): April 1, 2017 through December 31, 2017 $ 81,886 2018 98,129 2019 82,552 2020 65,195 2021 48,604 Thereafter 99,018 $ 475,384 As of March 31, 2017 , the Company’s commercial real estate properties were leased to approximately 700 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 Computer System Design & Programming 61 $ 11,991 10.6 % Professional, Scientific & Legal 71 11,647 10.3 % Insurance Carriers & Related Activities 34 11,543 10.2 % Finance 54 11,355 10.0 % $ 46,536 41.1 % _____________________ (1) Annualized base rent represents annualized contractual base rental income as of March 31, 2017 , 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 March 31, 2017 , the Company’s real estate investments in Washington, California and Texas represented 30.0% , 15.0% and 14.6% 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. Recent Acquisition On February 14, 2017, the Company, through an indirect wholly owned subsidiary, 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 (net of closing credits) of Crown Pointe was $83.1 million plus $1.1 million of capitalized acquisition costs. The Company recorded this acquisition as an asset acquisition and recorded $22.6 million to land, $56.6 million to building and improvements, $6.0 million to tenant origination and absorption costs and $1.0 million to below-market lease liabilities during the three months ended March 31, 2017 . The intangible assets and liabilities acquired in connection with this acquisition have weighted-average amortization periods as of the date of acquisition of 4.9 years for tenant origination and absorption costs and 4.2 years for below-market lease liabilities. During the three months ended March 31, 2017 , the Company recognized $1.2 million of total revenues and $0.9 million of operating expenses from this property.

TENANT ORIGINATION AND ABSORPTI

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES	3 Months Ended
	Mar. 31, 2017
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 March 31, 2017 and December 31, 2016 , 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 March 31, December 31, March 31, December 31, March 31, December 31, Cost $ 53,626 $ 48,964 $ 1,877 $ 1,877 $ (11,605 ) $ (10,945 ) Accumulated Amortization (25,604 ) (23,989 ) (1,333 ) (1,244 ) 5,072 4,394 Net Amount $ 28,022 $ 24,975 $ 544 $ 633 $ (6,533 ) $ (6,551 ) 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 three months ended March 31, 2017 and 2016 were as follows (in thousands): Tenant Origination and Absorption Costs Above-Market Lease Assets Below-Market Lease Liabilities For the Three Months Ended For the Three Months Ended For the Three Months Ended 2017 2016 2017 2016 2017 2016 Amortization $ (2,943 ) $ (2,211 ) $ (89 ) $ (120 ) $ 983 $ 308 Additionally, as of March 31, 2017 and December 31, 2016 , 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 $6.0 million and $6.3 million , respectively. During the three months ended March 31, 2017 and 2016 , the Company recorded amortization expense of $0.3 million and $0.2 million related to tax abatement intangible assets, respectively.

REAL ESTATE DEBT SECURITIES

REAL ESTATE DEBT SECURITIES	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
REAL ESTATE DEBT SECURITIES	REAL ESTATE DEBT SECURITIES As of March 31, 2017 , the Company owned an investment in real estate debt securities. The information for those real estate debt securities as of March 31, 2017 and December 31, 2016 is set forth below (in thousands): Debt Securities Name Date Originated Debt Securities Type Outstanding Principal Balance as of March 31, 2017 (1) Book Value as of March 31, 2017 (2) 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 $ 10,000 $ 9,754 $ 4,683 9.0 % 13.1 % 10/28/2019 _____________________ (1) Outstanding principal balance as of March 31, 2017 represents principal balance outstanding under the real estate debt securities. Under the Battery Point purchase agreement, we may be required to purchase additional 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 2017 , 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 March 31, 2017 . The following summarizes the activity related to real estate debt securities for the three months ended March 31, 2017 (in thousands): Real estate debt securities - December 31, 2016 $ 4,683 Face value of additional real estate debt securities acquired 5,000 Deferred interest receivable and interest accretion 44 Commitment fee, net of closing costs and acquisition fee 2 Accretion of commitment fee, net of closing costs 25 Real estate debt securities - March 31, 2017 $ 9,754 For the three months ended March 31, 2017 , interest income from real estate debt securities consisted of the following (in thousands): Contractual interest income $ 91 Interest accretion 44 Accretion of commitment fee, net of closing costs and acquisition fee 25 Interest income from real estate debt securities $ 160

NOTES AND BOND PAYABLE

NOTES AND BOND PAYABLE	3 Months Ended
	Mar. 31, 2017
Notes and Bonds Payable [Abstract]
NOTES AND BOND PAYABLE	NOTES AND BONDS PAYABLE As of March 31, 2017 and December 31, 2016 , the Company’s notes and bonds payable consisted of the following (dollars in thousands): Book Value as of March 31, 2017 Book Value as of December 31, 2016 Contractual Interest Rate as of March 31, 2017 (1) Effective Interest Rate at March 31, 2017 (1) Payment Type Maturity (2) Richardson Portfolio Mortgage Loan $ 40,435 $ 40,594 One-Month LIBOR + 2.10% 2.89% Principal & Interest 05/01/2017 (3) Bellevue Technology Center Mortgage Loan 59,220 59,400 One-Month LIBOR + 2.25% 3.03% Principal & Interest 03/01/2019 Portfolio Revolving Loan Facility (4) 11,559 11,799 One-Month LIBOR + 2.25% 3.03% Principal & Interest 05/01/2017 (5) Portfolio Mortgage Loan 107,483 106,479 One-Month LIBOR + 2.25% 3.03% Principal & Interest 07/01/2017 Burbank Collection Mortgage Loan 9,711 9,812 One-Month LIBOR + 2.35% 3.16% Principal & Interest 09/30/2017 50 Congress Mortgage Loan 31,429 31,525 One-Month LIBOR + 1.90% 2.68% Principal & Interest 10/01/2017 1180 Raymond Bond Payable 6,595 6,635 6.50% 6.50% Principal & Interest 09/01/2036 Central Building Mortgage Loan 27,600 27,600 One-Month LIBOR + 1.75% 2.53% Interest Only 11/13/2018 Maitland Promenade II Mortgage Loan 20,774 20,877 One-Month LIBOR + 2.90% 3.69% Principal & Interest 01/01/2018 Westmoor Center Mortgage Loan 61,940 62,000 One-Month LIBOR + 2.25% 3.03% Principal & Interest 02/01/2018 Plaza Buildings Senior Loan 109,545 109,866 One-Month LIBOR + 1.90% 2.68% Principal & Interest 01/14/2018 424 Bedford Mortgage Loan 24,693 24,832 3.91% 3.91% Principal & Interest 10/01/2022 1180 Raymond Mortgage Loan 31,000 31,000 One-Month LIBOR + 2.25% 3.03% Interest Only 12/01/2017 KBS SOR (BVI) Holdings, Ltd. Series A Debentures (6) 267,782 251,811 4.25% 4.25% (6) 03/01/2023 Westpark Portfolio Mortgage Loan 83,200 83,200 One-Month LIBOR + 2.50% 3.28% Interest Only (7) 07/01/2020 353 Sacramento Mortgage Loan (8) 87,033 85,500 One-Month LIBOR + 2.75% 3.66% Interest Only 10/14/2018 Crown Pointe Mortgage Loan (9) 50,500 — One-Month LIBOR + 2.60% 3.38% Interest Only 02/13/2020 Total Notes and Bonds Payable principal outstanding 1,030,499 962,930 Net Premium/(Discount) on Notes and Bonds Payable (10) 99 88 Deferred financing costs, net (12,497 ) (12,394 ) Total Notes and Bonds Payable, net $ 1,018,101 $ 950,624 _____________________ (1) Contractual interest rate represents the interest rate in effect under the loan as of March 31, 2017 . Effective interest rate is calculated as the actual interest rate in effect as of March 31, 2017 (consisting of the contractual interest rate and contractual floor rates), using interest rate indices at March 31, 2017 , where applicable. (2) Represents the initial maturity date or the maturity date as extended as of March 31, 2017 ; subject to certain conditions, the maturity dates of certain loans may be extended beyond the date shown. (3) Subsequent to March 31, 2017 , the maturity date of the Richardson Portfolio Mortgage Loan was extended to July 1, 2017. (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 was comprised of $63.5 million of revolving debt and $12.2 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 March 31, 2017 , $11.6 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) Subsequent to March 31, 2017 , the Company entered into a loan modification agreement to extend the maturity date of the Portfolio Revolving Loan Facility to May 1, 2019. As a result of this modification, the Portfolio Revolving Loan Facility bears interest at a floating rate of 2.75% over one-month LIBOR. The Portfolio Revolving Loan Facility is comprised of $30.0 million of revolving debt and $45.0 million of non-revolving debt. (6) See “ – Israeli Bond Financing” below. (7) Represents the payment type required under the loan as of March 31, 2017 . 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. (8) As of March 31, 2017 , $87.0 million had been disbursed to the Company and up to $28.5 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. (9) As of March 31, 2017 , $50.5 million had been disbursed to the Company and up to $12.0 million is available for future disbursements to be used for tenant improvements, leasing commissions and as an earn-out advance, 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 $46.9 million of the outstanding loan balance at 3.0% effective February 21, 2017 through February 13, 2020. (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 three months ended March 31, 2017 and 2016 , the Company incurred $9.4 million and $5.2 million of interest expense, respectively. Included in interest expense for the three months ended March 31, 2017 and 2016 was $1.3 million and $0.7 million of amortization of deferred financing costs, respectively. Additionally, during the three months ended March 31, 2017 and 2016 , the Company capitalized $0.6 million and $0.5 million of interest to its investments in undeveloped land, respectively. As of March 31, 2017 , the Company’s deferred financing costs were $12.5 million , net of amortization, which are included in notes and bonds payable, net. 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, respectively. As of March 31, 2017 and December 31, 2016 , the Company’s interest payable was $2.9 million and $5.3 million , respectively. The following is a schedule of maturities, including principal amortization payments, for all notes and bonds payable outstanding as of March 31, 2017 (in thousands): April 1, 2017 through December 31, 2017 $ 234,433 2018 307,111 2019 113,406 2020 186,570 2021 54,435 Thereafter 134,544 $ 1,030,499 The Company’s notes payable contain financial debt covenants. As of March 31, 2017 , 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 March 31, 2017 , the Company has entered into four separate foreign currency collars for an aggregate notional amount of $250.0 million to hedge its exposure to foreign currency exchange rate movements. See note 7 , “Derivative Instruments” for a further discussion on the Company’s foreign currency collars. The deed of trust that governs the terms of the Debentures contains various financial covenants. As of March 31, 2017 , the Company was in compliance with all of these financial debt covenants.

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	3 Months Ended
	Mar. 31, 2017
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 March 31, 2017 and 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 March 31, 2017 , the Company had two interest rate caps outstanding, which were not designated as hedging instruments. The following table summarizes the notional amount and other information related to the Company’s derivative instruments as of March 31, 2017 and 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 (dollars in thousands): Derivative Instruments Effective Date Maturity Date Notional Value Reference Rate Interest Rate Cap 10/14/2016 10/14/2018 $ 115,500 One-month LIBOR at 3.00% Interest Rate Cap 02/21/2017 02/13/2020 $ 46,900 One-month LIBOR at 3.00% 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 March 31, 2017 and December 31, 2016 (dollars in thousands): March 31, 2017 December 31, 2016 Derivative Instruments Balance Sheet Location Number of Instruments Fair Value Number of Instruments Fair Value Derivative instruments not designated as hedging instruments Interest rate caps Prepaid expenses and other assets 2 $ 62 1 $ 12 Foreign currency collars Prepaid expenses and other assets (Other liabilities) 4 $ 7,227 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 three months ended March 31, 2017 , the Company recognized an $11.1 million gain related to the foreign currency collars, which is shown net against $15.8 million of foreign currency transaction loss in the accompanying consolidated statements of operations as foreign currency transaction loss, net. During the three months ended March 31, 2017 , the Company recorded an unrealized loss of $0.1 million on interest rate caps, which was included in interest expense on the accompanying consolidated statements of operations.

FAIR VALUE DISCLOSURES

FAIR VALUE DISCLOSURES	3 Months Ended
	Mar. 31, 2017
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 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 March 31, 2017 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 March 31, 2017 and December 31, 2016 , which carrying amounts do not approximate the fair values (in thousands): March 31, 2017 December 31, 2016 Face Value Carrying Amount Fair Value Face Value Carrying Amount Fair Value Financial asset: Real estate debt securities $ 10,000 $ 9,754 $ 9,789 $ 5,000 $ 4,683 $ 4,683 Financial liabilities: Notes and bond payable $ 762,717 $ 758,223 $ 763,219 $ 711,119 $ 707,169 $ 711,425 KBS SOR (BVI) Holdings, Ltd. Series A Debentures $ 267,782 $ 259,878 $ 273,834 $ 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 March 31, 2017 , the Company measured the following assets at fair value (in thousands): Fair Value Measurements Using Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Recurring Basis: Asset derivatives - interest rate caps $ 62 $ — $ 62 $ — Asset derivatives - foreign currency collars $ 7,227 $ — $ 7,227 $ —

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	3 Months Ended
	Mar. 31, 2017
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 three months ended March 31, 2017 and 2016 , 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 three months ended March 31, 2017 and 2016 , respectively, and any related amounts payable as of March 31, 2017 and December 31, 2016 (in thousands): Incurred Payable as of Three Months Ended March 31, March 31, 2017 December 31, 2016 2017 2016 Expensed Asset management fees $ 2,748 $ 2,088 $ — $ — Reimbursable operating expenses (1) 69 44 27 55 Capitalized Acquisition fees on real estate (2) 836 — — — $ 3,653 $ 2,132 $ 27 $ 55 _____________________ (1) 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 $55,000 and $44,000 for the three months ended March 31, 2017 and 2016 , 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. (2) As a result of the adoption of ASU No. 2017-01, the Company’s acquisitions of real estate properties beginning January 1, 2017 could qualify as an asset acquisition (as opposed to a business combination). Acquisition fees associated with asset acquisitions will be capitalized, while these costs associated with business combinations will continue to be expensed as incurred. As of March 31, 2017 , the Company had $0.3 million due from the Advisor related to a property insurance rebate and legal fees incurred in connection with certain strategic transactions for which the Advisor has agreed to reimburse the Company.

INVESTMENT IN UNCONSOLIDATED JO

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES	3 Months Ended
	Mar. 31, 2017
Equity Method Investments and Joint Ventures [Abstract]
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES	INVESTMENT IN UNCONSOLIDATED JOINT VENTURES As of March 31, 2017 and December 31, 2016 , the Company’s investments in unconsolidated joint ventures were composed of the following (dollars in thousands): Investment Balance at Joint Venture Number of Properties Location Ownership % March 31, 2017 December 31, 2016 NIP Joint Venture 12 Various Less than 5.0% $ 4,317 $ 5,305 110 William Joint Venture 1 New York, New York 60.0% 12,221 70,544 $ 16,538 $ 75,849 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 March 31, 2017 , the NIP Joint Venture owned 12 industrial properties and a master lease with respect to another industrial property encompassing 5.2 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 March 31, 2017 . 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 March 31, 2017 and December 31, 2016 , the book value of the Company’s investment in the NIP Joint Venture was $4.3 million and $5.3 million , respectively. During the three months ended March 31, 2017 , the Company received a distribution of $2.9 million related to its investment in the NIP Joint Venture. The Company recognized $1.9 million of income distributions and $1.0 million of return of capital from the NIP Joint Venture. During the three months ended March 31, 2016 , the Company did not receive any distributions related to its investment in 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. 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 March 31, 2017 and December 31, 2016 , the book value of the Company’s investment in the 110 William Joint Venture was $12.2 million and $70.5 million , respectively, which includes $1.5 million of unamortized acquisition fees and expenses incurred directly by the Company. During the three months ended March 31, 2017 , the 110 William Joint Venture made a $58.2 million return of capital distribution to the Company and a $38.8 million return of capital distribution to the 110 William JV Partner funded with proceeds from the 110 William refinancing discussed below. Summarized financial information for the 110 William Joint Venture follows (in thousands): March 31, 2017 December 31, 2016 Assets: Real estate assets, net of accumulated depreciation and amortization $ 260,159 $ 262,192 Other assets 26,668 23,355 Total assets $ 286,827 $ 285,547 Liabilities and equity: Notes payable, net (1) $ 257,155 $ 157,628 Other liabilities 11,814 12,872 Partners’ capital 17,858 115,047 Total liabilities and equity $ 286,827 $ 285,547 _____________________ (1) See "- 110 William Joint Venture Refinance" below. Three Months Ended March 31, 2017 2016 Revenues $ 8,392 $ 8,251 Expenses: Operating, maintenance, and management 2,396 2,505 Real estate taxes and insurance 1,617 1,434 Depreciation and amortization 3,232 3,121 Interest expense 1,400 1,516 Total expenses 8,645 8,576 Other income 14 16 Net loss $ (239 ) $ (309 ) Company’s equity in loss of unconsolidated joint venture $ (154 ) $ (196 ) 110 William Joint Venture Refinance 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.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2017
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 March 31, 2017 . 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	3 Months Ended
	Mar. 31, 2017
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS The Company evaluates subsequent events up until the date the consolidated financial statements are issued. Partial Real Estate Sale Subsequent to March 31, 2017 Park Highlands On May 1, 2017, the Company sold an aggregate of 102 acres of Park Highlands undeveloped land for an aggregate sales price, net of closing credits, of $18.4 million , excluding closing costs. The purchasers are not affiliated with the Company or the Advisor. Purchase and Sale Agreement for Real Estate Property Subsequent to March 31, 2017 50 Congress Street On July 11, 2013, the Company, through an indirect wholly owned subsidiary, purchased an office building containing 179,872 rentable square feet located on approximately 0.4 acres of land in Boston, Massachusetts (“50 Congress Street”). On April 13, 2017, the Company entered into a purchase and sale agreement and escrow instructions for the sale of 50 Congress Street to purchasers unaffiliated with the Company or the Advisor. Pursuant to the purchase and sale agreement, the sale price for 50 Congress Street is $79.0 million , subject to certain concessions and credits that will be finalized at closing. There can be no assurance that the Company will complete the sale of 50 Congress Street. The purchasers would be obligated to purchase 50 Congress Street only after satisfaction of agreed upon closing conditions.

SUMMARY OF SIGNIFICANT ACCOUN20

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited consolidated financial statements and condensed notes thereto have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information as contained within the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) and the rules and regulations of the SEC, including the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, the unaudited consolidated financial statements do not include all of the information and footnotes required by GAAP for audited financial statements. In the opinion of management, the financial statements for the unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Operating results for the three months ended March 31, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 .
Principles of Consolidation	The consolidated financial statements include the accounts of the Company, REIT Holdings, the Operating Partnership, KBS Strategic Opportunity BVI 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.
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 the prior period. 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.
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 three months ended March 31, 2017 and 2016 . Distributions declared per share were $0.09246575 and $0.09323770 during the three months ended March 31, 2017 and 2016 , respectively.
Square Footage, Occupancy and Other Measures	Any references to square footage, occupancy or annualized base rent are unaudited and outside the scope of the Company’s independent registered public accounting firm’s review of the Company’s financial statements in accordance with the standards of the United States Public Company Accounting Oversight Board.
Recently Issued Accounting Standards Updates	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 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 asset acquisitions (as opposed to business combinations). Transaction costs associated with asset acquisitions are capitalized, while transaction costs associated with business combinations will continue to be expensed as incurred.

REAL ESTATE HELD FOR INVESTME21

REAL ESTATE HELD FOR INVESTMENT (Tables)	3 Months Ended
	Mar. 31, 2017
Real Estate [Abstract]
Schedule of Real Estate Investments	The following table summarizes the Company’s real estate held for investment as of March 31, 2017 and December 31, 2016 , respectively (in thousands): March 31, 2017 December 31, 2016 Land $ 346,475 $ 322,499 Buildings and improvements 922,790 855,744 Tenant origination and absorption costs 53,626 48,964 Total real estate, cost 1,322,891 1,227,207 Accumulated depreciation and amortization (130,764 ) (120,176 ) Total real estate, net $ 1,192,127 $ 1,107,031 The following table provides summary information regarding the Company’s real estate held for investment as of March 31, 2017 (in thousands): Property Date City State Property Type Land Building Tenant Origination and Absorption Total Accumulated Depreciation and Amortization Total Ownership % Northridge Center I & II 03/25/2011 Atlanta GA Office $ 2,234 $ 7,335 $ — $ 9,569 $ (2,563 ) $ 7,006 100.0 % Iron Point Business Park 06/21/2011 Folsom CA Office 2,671 19,525 — 22,196 (5,182 ) 17,014 100.0 % Richardson Portfolio: Palisades Central I 11/23/2011 Richardson TX Office 1,037 10,423 657 12,117 (2,779 ) 9,338 90.0 % Palisades Central II 11/23/2011 Richardson TX Office 810 17,817 256 18,883 (4,456 ) 14,427 90.0 % Greenway I 11/23/2011 Richardson TX Office 561 2,399 — 2,960 (753 ) 2,207 90.0 % Greenway III 11/23/2011 Richardson TX Office 702 3,800 559 5,061 (1,564 ) 3,497 90.0 % Undeveloped Land 11/23/2011 Richardson TX Undeveloped Land 3,134 — — 3,134 — 3,134 90.0 % Total Richardson Portfolio 6,244 34,439 1,472 42,155 (9,552 ) 32,603 Park Highlands (1) 12/30/2011 North Las Vegas NV Undeveloped Land 35,173 — — 35,173 — 35,173 (1) Bellevue Technology Center 07/31/2012 Bellevue WA Office 25,506 56,960 3,577 86,043 (11,580 ) 74,463 100.0 % Powers Ferry Landing East 09/24/2012 Atlanta GA Office 1,643 8,016 99 9,758 (2,602 ) 7,156 100.0 % 1800 West Loop 12/04/2012 Houston TX Office 8,360 60,453 4,634 73,447 (13,447 ) 60,000 100.0 % West Loop I & II 12/07/2012 Houston TX Office 7,300 32,280 1,793 41,373 (6,287 ) 35,086 100.0 % Burbank Collection 12/12/2012 Burbank CA Retail 4,175 11,915 725 16,815 (1,852 ) 14,963 90.0 % Austin Suburban Portfolio 03/28/2013 Austin TX Office 8,288 68,870 1,513 78,671 (10,723 ) 67,948 100.0 % Westmoor Center 06/12/2013 Westminster CO Office 10,058 72,537 5,175 87,770 (12,994 ) 74,776 100.0 % Central Building 07/10/2013 Seattle WA Office 7,015 26,802 1,428 35,245 (4,033 ) 31,212 100.0 % 50 Congress Street 07/11/2013 Boston MA Office 9,876 41,383 2,265 53,524 (7,065 ) 46,459 100.0 % 1180 Raymond 08/20/2013 Newark NJ Apartment 8,292 37,872 — 46,164 (4,256 ) 41,908 100.0 % Park Highlands II 12/10/2013 North Las Vegas NV Undeveloped Land 23,839 — — 23,839 — 23,839 100.0 % Maitland Promenade II 12/18/2013 Orlando FL Office 3,434 25,040 3,520 31,994 (4,956 ) 27,038 100.0 % Plaza Buildings 01/14/2014 Bellevue WA Office 53,040 139,005 7,228 199,273 (20,168 ) 179,105 100.0 % 424 Bedford 01/31/2014 Brooklyn NY Apartment 8,860 25,521 — 34,381 (2,236 ) 32,145 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 85,172 8,636 129,893 (6,150 ) 123,743 100.0 % 353 Sacramento 07/11/2016 San Francisco CA Office 58,374 112,836 5,572 176,782 (4,552 ) 172,230 100.0 % Crown Pointe 02/14/2017 Dunwoody GA Office 22,590 56,829 5,989 85,408 (566 ) 84,842 100.0 % $ 346,475 $ 922,790 $ 53,626 $ 1,322,891 $ (130,764 ) $ 1,192,127 _____________________ (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.
Schedule of Future Minimum Rental Income for Company's Properties	As of March 31, 2017 , the future minimum rental income from the Company’s properties, excluding apartment leases, under non-cancelable operating leases was as follows (in thousands): April 1, 2017 through December 31, 2017 $ 81,886 2018 98,129 2019 82,552 2020 65,195 2021 48,604 Thereafter 99,018 $ 475,384
Schedules of Concentration of Risk, by Risk Factor	As of March 31, 2017 , the Company’s commercial real estate properties were leased to approximately 700 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 Computer System Design & Programming 61 $ 11,991 10.6 % Professional, Scientific & Legal 71 11,647 10.3 % Insurance Carriers & Related Activities 34 11,543 10.2 % Finance 54 11,355 10.0 % $ 46,536 41.1 % _____________________ (1) Annualized base rent represents annualized contractual base rental income as of March 31, 2017 , 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 ABSORP22

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES (Tables)	3 Months Ended
	Mar. 31, 2017
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 March 31, 2017 and December 31, 2016 , 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 March 31, December 31, March 31, December 31, March 31, December 31, Cost $ 53,626 $ 48,964 $ 1,877 $ 1,877 $ (11,605 ) $ (10,945 ) Accumulated Amortization (25,604 ) (23,989 ) (1,333 ) (1,244 ) 5,072 4,394 Net Amount $ 28,022 $ 24,975 $ 544 $ 633 $ (6,533 ) $ (6,551 )
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 three months ended March 31, 2017 and 2016 were as follows (in thousands): Tenant Origination and Absorption Costs Above-Market Lease Assets Below-Market Lease Liabilities For the Three Months Ended For the Three Months Ended For the Three Months Ended 2017 2016 2017 2016 2017 2016 Amortization $ (2,943 ) $ (2,211 ) $ (89 ) $ (120 ) $ 983 $ 308

REAL ESTATE DEBT SECURITIES (Ta

REAL ESTATE DEBT SECURITIES (Tables)	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Schedule of Activity of Real Estate Debt Securities	As of March 31, 2017 , the Company owned an investment in real estate debt securities. The information for those real estate debt securities as of March 31, 2017 and December 31, 2016 is set forth below (in thousands): Debt Securities Name Date Originated Debt Securities Type Outstanding Principal Balance as of March 31, 2017 (1) Book Value as of March 31, 2017 (2) 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 $ 10,000 $ 9,754 $ 4,683 9.0 % 13.1 % 10/28/2019 _____________________ (1) Outstanding principal balance as of March 31, 2017 represents principal balance outstanding under the real estate debt securities. Under the Battery Point purchase agreement, we may be required to purchase additional 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 2017 , 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 March 31, 2017 . The following summarizes the activity related to real estate debt securities for the three months ended March 31, 2017 (in thousands): Real estate debt securities - December 31, 2016 $ 4,683 Face value of additional real estate debt securities acquired 5,000 Deferred interest receivable and interest accretion 44 Commitment fee, net of closing costs and acquisition fee 2 Accretion of commitment fee, net of closing costs 25 Real estate debt securities - March 31, 2017 $ 9,754
Schedule of Interest Income from Real Estate Debt Securities	For the three months ended March 31, 2017 , interest income from real estate debt securities consisted of the following (in thousands): Contractual interest income $ 91 Interest accretion 44 Accretion of commitment fee, net of closing costs and acquisition fee 25 Interest income from real estate debt securities $ 160

NOTES AND BOND PAYABLE (Tables)

NOTES AND BOND PAYABLE (Tables)	3 Months Ended
	Mar. 31, 2017
Notes and Bonds Payable [Abstract]
Schedule of Long-term Debt Instruments	As of March 31, 2017 and December 31, 2016 , the Company’s notes and bonds payable consisted of the following (dollars in thousands): Book Value as of March 31, 2017 Book Value as of December 31, 2016 Contractual Interest Rate as of March 31, 2017 (1) Effective Interest Rate at March 31, 2017 (1) Payment Type Maturity (2) Richardson Portfolio Mortgage Loan $ 40,435 $ 40,594 One-Month LIBOR + 2.10% 2.89% Principal & Interest 05/01/2017 (3) Bellevue Technology Center Mortgage Loan 59,220 59,400 One-Month LIBOR + 2.25% 3.03% Principal & Interest 03/01/2019 Portfolio Revolving Loan Facility (4) 11,559 11,799 One-Month LIBOR + 2.25% 3.03% Principal & Interest 05/01/2017 (5) Portfolio Mortgage Loan 107,483 106,479 One-Month LIBOR + 2.25% 3.03% Principal & Interest 07/01/2017 Burbank Collection Mortgage Loan 9,711 9,812 One-Month LIBOR + 2.35% 3.16% Principal & Interest 09/30/2017 50 Congress Mortgage Loan 31,429 31,525 One-Month LIBOR + 1.90% 2.68% Principal & Interest 10/01/2017 1180 Raymond Bond Payable 6,595 6,635 6.50% 6.50% Principal & Interest 09/01/2036 Central Building Mortgage Loan 27,600 27,600 One-Month LIBOR + 1.75% 2.53% Interest Only 11/13/2018 Maitland Promenade II Mortgage Loan 20,774 20,877 One-Month LIBOR + 2.90% 3.69% Principal & Interest 01/01/2018 Westmoor Center Mortgage Loan 61,940 62,000 One-Month LIBOR + 2.25% 3.03% Principal & Interest 02/01/2018 Plaza Buildings Senior Loan 109,545 109,866 One-Month LIBOR + 1.90% 2.68% Principal & Interest 01/14/2018 424 Bedford Mortgage Loan 24,693 24,832 3.91% 3.91% Principal & Interest 10/01/2022 1180 Raymond Mortgage Loan 31,000 31,000 One-Month LIBOR + 2.25% 3.03% Interest Only 12/01/2017 KBS SOR (BVI) Holdings, Ltd. Series A Debentures (6) 267,782 251,811 4.25% 4.25% (6) 03/01/2023 Westpark Portfolio Mortgage Loan 83,200 83,200 One-Month LIBOR + 2.50% 3.28% Interest Only (7) 07/01/2020 353 Sacramento Mortgage Loan (8) 87,033 85,500 One-Month LIBOR + 2.75% 3.66% Interest Only 10/14/2018 Crown Pointe Mortgage Loan (9) 50,500 — One-Month LIBOR + 2.60% 3.38% Interest Only 02/13/2020 Total Notes and Bonds Payable principal outstanding 1,030,499 962,930 Net Premium/(Discount) on Notes and Bonds Payable (10) 99 88 Deferred financing costs, net (12,497 ) (12,394 ) Total Notes and Bonds Payable, net $ 1,018,101 $ 950,624 _____________________ (1) Contractual interest rate represents the interest rate in effect under the loan as of March 31, 2017 . Effective interest rate is calculated as the actual interest rate in effect as of March 31, 2017 (consisting of the contractual interest rate and contractual floor rates), using interest rate indices at March 31, 2017 , where applicable. (2) Represents the initial maturity date or the maturity date as extended as of March 31, 2017 ; subject to certain conditions, the maturity dates of certain loans may be extended beyond the date shown. (3) Subsequent to March 31, 2017 , the maturity date of the Richardson Portfolio Mortgage Loan was extended to July 1, 2017. (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 was comprised of $63.5 million of revolving debt and $12.2 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 March 31, 2017 , $11.6 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) Subsequent to March 31, 2017 , the Company entered into a loan modification agreement to extend the maturity date of the Portfolio Revolving Loan Facility to May 1, 2019. As a result of this modification, the Portfolio Revolving Loan Facility bears interest at a floating rate of 2.75% over one-month LIBOR. The Portfolio Revolving Loan Facility is comprised of $30.0 million of revolving debt and $45.0 million of non-revolving debt. (6) See “ – Israeli Bond Financing” below. (7) Represents the payment type required under the loan as of March 31, 2017 . 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. (8) As of March 31, 2017 , $87.0 million had been disbursed to the Company and up to $28.5 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. (9) As of March 31, 2017 , $50.5 million had been disbursed to the Company and up to $12.0 million is available for future disbursements to be used for tenant improvements, leasing commissions and as an earn-out advance, 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 $46.9 million of the outstanding loan balance at 3.0% effective February 21, 2017 through February 13, 2020. (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 March 31, 2017 (in thousands): April 1, 2017 through December 31, 2017 $ 234,433 2018 307,111 2019 113,406 2020 186,570 2021 54,435 Thereafter 134,544 $ 1,030,499

DERIVATIVE INSTRUMENTS (Tables)

DERIVATIVE INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives	The following table summarizes the notional amount and other information related to the Company’s derivative instruments as of March 31, 2017 and 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 (dollars in thousands): Derivative Instruments Effective Date Maturity Date Notional Value Reference Rate Interest Rate Cap 10/14/2016 10/14/2018 $ 115,500 One-month LIBOR at 3.00% Interest Rate Cap 02/21/2017 02/13/2020 $ 46,900 One-month LIBOR at 3.00% The following table summarizes the notional amount and other information related to the Company’s foreign currency collars as of March 31, 2017 and 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 March 31, 2017 and December 31, 2016 (dollars in thousands): March 31, 2017 December 31, 2016 Derivative Instruments Balance Sheet Location Number of Instruments Fair Value Number of Instruments Fair Value Derivative instruments not designated as hedging instruments Interest rate caps Prepaid expenses and other assets 2 $ 62 1 $ 12 Foreign currency collars Prepaid expenses and other assets (Other liabilities) 4 $ 7,227 4 $ (3,910 )

FAIR VALUE DISCLOSURES (Tables)

FAIR VALUE DISCLOSURES (Tables)	3 Months Ended
	Mar. 31, 2017
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 March 31, 2017 and December 31, 2016 , which carrying amounts do not approximate the fair values (in thousands): March 31, 2017 December 31, 2016 Face Value Carrying Amount Fair Value Face Value Carrying Amount Fair Value Financial asset: Real estate debt securities $ 10,000 $ 9,754 $ 9,789 $ 5,000 $ 4,683 $ 4,683 Financial liabilities: Notes and bond payable $ 762,717 $ 758,223 $ 763,219 $ 711,119 $ 707,169 $ 711,425 KBS SOR (BVI) Holdings, Ltd. Series A Debentures $ 267,782 $ 259,878 $ 273,834 $ 251,811 $ 243,455 $ 253,120
Fair Value, Assets Measured on Recurring Basis	As of March 31, 2017 , the Company measured the following assets at fair value (in thousands): Fair Value Measurements Using Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Recurring Basis: Asset derivatives - interest rate caps $ 62 $ — $ 62 $ — Asset derivatives - foreign currency collars $ 7,227 $ — $ 7,227 $ —

RELATED PARTY TRANSACTIONS (Tab

RELATED PARTY TRANSACTIONS (Tables)	3 Months Ended
	Mar. 31, 2017
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 three months ended March 31, 2017 and 2016 , respectively, and any related amounts payable as of March 31, 2017 and December 31, 2016 (in thousands): Incurred Payable as of Three Months Ended March 31, March 31, 2017 December 31, 2016 2017 2016 Expensed Asset management fees $ 2,748 $ 2,088 $ — $ — Reimbursable operating expenses (1) 69 44 27 55 Capitalized Acquisition fees on real estate (2) 836 — — — $ 3,653 $ 2,132 $ 27 $ 55 _____________________ (1) 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 $55,000 and $44,000 for the three months ended March 31, 2017 and 2016 , 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. (2) As a result of the adoption of ASU No. 2017-01, the Company’s acquisitions of real estate properties beginning January 1, 2017 could qualify as an asset acquisition (as opposed to a business combination). Acquisition fees associated with asset acquisitions will be capitalized, while these costs associated with business combinations will continue to be expensed as incurred.

INVESTMENT IN UNCONSOLIDATED 28

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Tables)	3 Months Ended
	Mar. 31, 2017
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): March 31, 2017 December 31, 2016 Assets: Real estate assets, net of accumulated depreciation and amortization $ 260,159 $ 262,192 Other assets 26,668 23,355 Total assets $ 286,827 $ 285,547 Liabilities and equity: Notes payable, net (1) $ 257,155 $ 157,628 Other liabilities 11,814 12,872 Partners’ capital 17,858 115,047 Total liabilities and equity $ 286,827 $ 285,547 _____________________ (1) See "- 110 William Joint Venture Refinance" below. Three Months Ended March 31, 2017 2016 Revenues $ 8,392 $ 8,251 Expenses: Operating, maintenance, and management 2,396 2,505 Real estate taxes and insurance 1,617 1,434 Depreciation and amortization 3,232 3,121 Interest expense 1,400 1,516 Total expenses 8,645 8,576 Other income 14 16 Net loss $ (239 ) $ (309 ) Company’s equity in loss of unconsolidated joint venture $ (154 ) $ (196 ) As of March 31, 2017 and December 31, 2016 , the Company’s investments in unconsolidated joint ventures were composed of the following (dollars in thousands): Investment Balance at Joint Venture Number of Properties Location Ownership % March 31, 2017 December 31, 2016 NIP Joint Venture 12 Various Less than 5.0% $ 4,317 $ 5,305 110 William Joint Venture 1 New York, New York 60.0% 12,221 70,544 $ 16,538 $ 75,849

ORGANIZATION (Details)

ORGANIZATION (Details) $ in Thousands	Mar. 07, 2016ILS (₪)	Mar. 02, 2016ILS (₪)	Mar. 01, 2016ILS (₪)	Mar. 31, 2016USD ($)	Mar. 31, 2016ILS (₪)	Mar. 31, 2017USD ($)aPortfoliospropertyinvestmentshares	Dec. 31, 2016USD ($)shares	Mar. 31, 2017USD ($)aPortfoliospropertyinvestmentshares	Dec. 18, 2015shares	Oct. 23, 2012USD ($)shares	Dec. 29, 2011USD ($)shares	Jan. 08, 2009shares
Organizational Structure [Line Items]
Common stock, shares authorized						1,000,000,000	1,000,000,000	1,000,000,000
Common stock, shares issued						56,708,525	56,775,767	56,708,525		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 | $						$ 2,924	$ 12,616	$ 561,700
Shares of common stock sold under dividend reinvestment plan, value | $								68,300
Redemptions of common stock, value | $						3,754	38,573	80,800
Common stock, value, issued | $						$ 567	$ 568	$ 567		$ 500	$ 2,000
Number of real estate properties | property						21		21
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						12		12
Number of real estate properties acquired | property						9		9
Office Campus [Member]
Organizational Structure [Line Items]
Number of real estate properties | property						1		1
Office Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties | Portfolios						1		1
Number of real estate properties acquired | Portfolios						1		1
Office Buildings, Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties | property						4		4
Real estate area of undeveloped land | a						25		25
Office Property, Portfolio [Member]
Organizational Structure [Line Items]
Number of real estate properties acquired | property						3		3
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
Retail Properties [Member]
Organizational Structure [Line Items]
Number of real estate properties | property						1		1
Apartment Building [Member]
Organizational Structure [Line Items]
Number of real estate properties | 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%	4.25%
Proceeds from issuance of debt	₪ 127,700,000		₪ 842,500,000	$ 249,200	₪ 970,200,000
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												100,000,000
Shares registered for sale under dividend reinvestment plan												40,000,000
Issuance of common stock, shares						197,428	938,662	56,584,976
Issuance of common stock, value | $						$ 2	$ 9
Shares of common stock sold under dividend reinvestment plan, shares								6,232,598
Redemptions of common stock, shares						264,670	2,859,010	6,405,292
Redemptions of common stock, value | $						$ 3	$ 28
Common Stock [Member] | Minimum [Member]
Organizational Structure [Line Items]
Stock offering, shares authorized for issuance												250,000
Common Stock [Member] | Maximum [Member]
Organizational Structure [Line Items]
Stock offering, shares authorized for issuance												140,000,000
KBS Strategic Opportunity BVI [Member]
Organizational Structure [Line Items]
Common stock, shares authorized									50,000
KBS Strategic Opportunity BVI [Member] | Operating Partnership [Member]
Organizational Structure [Line Items]
Common stock, shares issued									10,000
KBS Capital Advisors LLC [Member]
Organizational Structure [Line Items]
Shares held by affiliate						20,000		20,000

SUMMARY OF SIGNIFICANT ACCOUN30

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	3 Months Ended
	Mar. 31, 2017segments$ / shares	Mar. 31, 2016$ / shares
Accounting Policies [Abstract]
Number of reportable segments | segments	1
Distributions declared per common share (in dollars per share) | $ / shares	$ 0.09246575	$ 0.09323770

REAL ESTATE HELD FOR INVESTME31

REAL ESTATE HELD FOR INVESTMENT (Narrative) (Details) ft² in Millions	Mar. 31, 2017aft²Portfoliosunitpropertyinvestment
Real Estate Properties [Line Items]
Number of real estate properties	21
Rentable square feet | ft²	6
Percentage of portfolio occupied	84.00%
Office Properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties	12
Number of real estate properties acquired	9
Office Campus [Member]
Real Estate Properties [Line Items]
Number of real estate properties	1
Office Portfolio [Member]
Real Estate Properties [Line Items]
Number of real estate properties | Portfolios	1
Number of real estate properties acquired | Portfolios	1
Office Buildings, Portfolio [Member]
Real Estate Properties [Line Items]
Number of real estate properties	4
Real estate area of undeveloped land | a	25
Office Property, Portfolio [Member]
Real Estate Properties [Line Items]
Number of real estate properties acquired	3
Retail Properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties	1
Apartment Building [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 Building [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
Number of investments in real estate | investment	2

REAL ESTATE HELD FOR INVESTME32

REAL ESTATE HELD FOR INVESTMENT (Schedule of Real Estate Investments) (Details) $ in Thousands	Sep. 07, 2016USD ($)unit	Jun. 25, 2016	Jun. 06, 2016	Jun. 05, 2016	Mar. 18, 2016	Mar. 17, 2016	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Real Estate Properties [Line Items]
Total real estate, cost							$ 1,322,891	$ 1,227,207
Accumulated depreciation and amortization							(130,764)	(120,176)
Total real estate, net							$ 1,192,127	1,107,031
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
Subsidiary of Common Parent [Member] | Disposed of by Sale [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							$ 9,569
Accumulated depreciation and amortization							(2,563)
Total real estate, net							$ 7,006
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							$ 22,196
Accumulated depreciation and amortization							(5,182)
Total real estate, net							$ 17,014
Ownership %							100.00%
Richardson Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							$ 42,155
Accumulated depreciation and amortization							(9,552)
Total real estate, net							$ 32,603
Palisades Central I [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 12,117
Accumulated depreciation and amortization							(2,779)
Total real estate, net							$ 9,338
Ownership %							90.00%
Palisades Central II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 18,883
Accumulated depreciation and amortization							(4,456)
Total real estate, net							$ 14,427
Ownership %							90.00%
Greenway I [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 2,960
Accumulated depreciation and amortization							(753)
Total real estate, net							$ 2,207
Ownership %							90.00%
Greenway III [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Nov. 23, 2011
Total real estate, cost							$ 5,061
Accumulated depreciation and amortization							(1,564)
Total real estate, net							$ 3,497
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							$ 35,173
Accumulated depreciation and amortization							0
Total real estate, net							$ 35,173
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							$ 86,043
Accumulated depreciation and amortization							(11,580)
Total real estate, net							$ 74,463
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							(2,602)
Total real estate, net							$ 7,156
Ownership %							100.00%
1800 West Loop [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 4, 2012
Total real estate, cost							$ 73,447
Accumulated depreciation and amortization							(13,447)
Total real estate, net							$ 60,000
Ownership %							100.00%
West Loop I and II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 7, 2012
Total real estate, cost							$ 41,373
Accumulated depreciation and amortization							(6,287)
Total real estate, net							$ 35,086
Ownership %							100.00%
Burbank Collection [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 12, 2012
Total real estate, cost							$ 16,815
Accumulated depreciation and amortization							(1,852)
Total real estate, net							$ 14,963
Ownership %							90.00%
Austin Suburban Portfolio [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Mar. 28, 2013
Total real estate, cost							$ 78,671
Accumulated depreciation and amortization							(10,723)
Total real estate, net							$ 67,948
Ownership %							100.00%
Westmoor Center [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jun. 12, 2013
Total real estate, cost							$ 87,770
Accumulated depreciation and amortization							(12,994)
Total real estate, net							$ 74,776
Ownership %							100.00%
Central Building [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jul. 10, 2013
Total real estate, cost							$ 35,245
Accumulated depreciation and amortization							(4,033)
Total real estate, net							$ 31,212
Ownership %							100.00%
50 Congress Street [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jul. 11, 2013
Total real estate, cost							$ 53,524
Accumulated depreciation and amortization							(7,065)
Total real estate, net							$ 46,459
Ownership %							100.00%
1180 Raymond [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Aug. 20, 2013
Total real estate, cost							$ 46,164
Accumulated depreciation and amortization							(4,256)
Total real estate, net							$ 41,908
Ownership %							100.00%
Park Highlands II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 10, 2013
Total real estate, cost							$ 23,839
Accumulated depreciation and amortization							0
Total real estate, net							$ 23,839
Ownership %							100.00%
Maitland Promenade II [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Dec. 18, 2013
Total real estate, cost							$ 31,994
Accumulated depreciation and amortization							(4,956)
Total real estate, net							$ 27,038
Ownership %							100.00%
Plaza Building [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jan. 14, 2014
Total real estate, cost							$ 199,273
Accumulated depreciation and amortization							(20,168)
Total real estate, net							$ 179,105
Ownership %							100.00%
424 Bedford [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jan. 31, 2014
Total real estate, cost							$ 34,381
Accumulated depreciation and amortization							(2,236)
Total real estate, net							$ 32,145
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							$ 129,893
Accumulated depreciation and amortization							(6,150)
Total real estate, net							$ 123,743
Ownership %							100.00%
353 Sacramento [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Jul. 11, 2016
Total real estate, cost							$ 176,782
Accumulated depreciation and amortization							(4,552)
Total real estate, net							$ 172,230
Ownership %							100.00%
Crown Pointe [Member]
Real Estate Properties [Line Items]
Date Acquired or Foreclosed on							Feb. 14, 2017
Total real estate, cost							$ 85,408
Accumulated depreciation and amortization							(566)
Total real estate, net							$ 84,842
Ownership %							100.00%
Land [Member]
Real Estate Properties [Line Items]
Total real estate, cost							$ 346,475	322,499
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							35,173
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 and 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							23,839
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
Land [Member] | Crown Pointe [Member]
Real Estate Properties [Line Items]
Total real estate, cost							22,590
Building and Building Improvements [Member]
Real Estate Properties [Line Items]
Total real estate, cost							922,790	855,744
Building and Building Improvements [Member] | Northridge Center I & II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							7,335
Building and Building Improvements [Member] | Iron Point Business Park [Member]
Real Estate Properties [Line Items]
Total real estate, cost							19,525
Building and Building Improvements [Member] | Richardson Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							34,439
Building and Building Improvements [Member] | Palisades Central I [Member]
Real Estate Properties [Line Items]
Total real estate, cost							10,423
Building and Building Improvements [Member] | Palisades Central II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							17,817
Building and Building Improvements [Member] | Greenway I [Member]
Real Estate Properties [Line Items]
Total real estate, cost							2,399
Building and Building Improvements [Member] | Greenway III [Member]
Real Estate Properties [Line Items]
Total real estate, cost							3,800
Building and Building Improvements [Member] | Undeveloped Land [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Building and Building Improvements [Member] | Park Highlands [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Building and Building Improvements [Member] | Bellevue Technology Center [Member]
Real Estate Properties [Line Items]
Total real estate, cost							56,960
Building and Building Improvements [Member] | Powers Ferry Landing East [Member]
Real Estate Properties [Line Items]
Total real estate, cost							8,016
Building and Building Improvements [Member] | 1800 West Loop [Member]
Real Estate Properties [Line Items]
Total real estate, cost							60,453
Building and Building Improvements [Member] | West Loop I and II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							32,280
Building and Building Improvements [Member] | Burbank Collection [Member]
Real Estate Properties [Line Items]
Total real estate, cost							11,915
Building and Building Improvements [Member] | Austin Suburban Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							68,870
Building and Building Improvements [Member] | Westmoor Center [Member]
Real Estate Properties [Line Items]
Total real estate, cost							72,537
Building and Building Improvements [Member] | Central Building [Member]
Real Estate Properties [Line Items]
Total real estate, cost							26,802
Building and Building Improvements [Member] | 50 Congress Street [Member]
Real Estate Properties [Line Items]
Total real estate, cost							41,383
Building and Building Improvements [Member] | 1180 Raymond [Member]
Real Estate Properties [Line Items]
Total real estate, cost							37,872
Building and Building Improvements [Member] | Park Highlands II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Building and Building Improvements [Member] | Maitland Promenade II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							25,040
Building and Building Improvements [Member] | Plaza Building [Member]
Real Estate Properties [Line Items]
Total real estate, cost							139,005
Building and Building Improvements [Member] | 424 Bedford [Member]
Real Estate Properties [Line Items]
Total real estate, cost							25,521
Building and Building Improvements [Member] | Richardson Land II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							0
Building and Building Improvements [Member] | Westpark Portfolio [Member]
Real Estate Properties [Line Items]
Total real estate, cost							85,172
Building and Building Improvements [Member] | 353 Sacramento [Member]
Real Estate Properties [Line Items]
Total real estate, cost							112,836
Building and Building Improvements [Member] | Crown Pointe [Member]
Real Estate Properties [Line Items]
Total real estate, cost							56,829
Tenant Origination and Absorption Costs [Member]
Real Estate Properties [Line Items]
Total real estate, cost							53,626	$ 48,964
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							1,472
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							256
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							4,634
Tenant Origination and Absorption Costs [Member] | West Loop I and II [Member]
Real Estate Properties [Line Items]
Total real estate, cost							1,793
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							1,513
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							1,428
Tenant Origination and Absorption Costs [Member] | 50 Congress Street [Member]
Real Estate Properties [Line Items]
Total real estate, cost							2,265
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							7,228
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							8,636
Tenant Origination and Absorption Costs [Member] | 353 Sacramento [Member]
Real Estate Properties [Line Items]
Total real estate, cost							5,572
Tenant Origination and Absorption Costs [Member] | Crown Pointe [Member]
Real Estate Properties [Line Items]
Total real estate, cost							$ 5,989

REAL ESTATE HELD FOR INVESTME33

REAL ESTATE HELD FOR INVESTMENT (Operating Leases) (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)tenant	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)
Operating Leased Assets [Line Items]
Recognition of deferred revenue, net of discontinued operations	$ 0.9	$ 0.6
Deferred rent receivables	27.8		$ 26.8
Incentive to Lessee	$ 3		3.2
Number of tenants | tenant	700
Maximum [Member]
Operating Leased Assets [Line Items]
Operating lease, term	11 years
Weighted Average [Member]
Operating Leased Assets [Line Items]
Operating lease, term	3 years 6 months
Other Liabilities [Member]
Operating Leased Assets [Line Items]
Security deposit liability	$ 7.9		$ 7.2
Apartment Building [Member]
Operating Leased Assets [Line Items]
Operating lease, term	1 year

REAL ESTATE HELD FOR INVESTME34

REAL ESTATE HELD FOR INVESTMENT (Future Minimum Rental Income) (Details) $ in Thousands	Mar. 31, 2017USD ($)
Real Estate [Abstract]
April 1, 2017 through December 31, 2017	$ 81,886
2,018	98,129
2,019	82,552
2,020	65,195
2,021	48,604
Thereafter	99,018
Future minimum rental income	$ 475,384

REAL ESTATE HELD FOR INVESTME35

REAL ESTATE HELD FOR INVESTMENT (Highest Tenant Industry Concentrations- Greater than 10% of Annual Base Rent) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)Tenantstenant
Concentration Risk [Line Items]
Number of tenants | tenant	700
Annualized Base Rent	$ 46,536
Percentage of Annualized Base Rent	41.10%
Industry - Computer System Design & Programming [Member]
Concentration Risk [Line Items]
Number of tenants | Tenants	61
Annualized Base Rent	$ 11,991
Percentage of Annualized Base Rent	10.60%
Industry - Professional, Scientific and Legal [Member]
Concentration Risk [Line Items]
Number of tenants | Tenants	71
Annualized Base Rent	$ 11,647
Percentage of Annualized Base Rent	10.30%
Industry - Insurance Carriers & Related Activities [Member]
Concentration Risk [Line Items]
Number of tenants | Tenants	34
Annualized Base Rent	$ 11,543
Percentage of Annualized Base Rent	10.20%
Industry - Finance [Member]
Concentration Risk [Line Items]
Number of tenants | Tenants	54
Annualized Base Rent	$ 11,355
Percentage of Annualized Base Rent	10.00%

REAL ESTATE HELD FOR INVESTME36

REAL ESTATE HELD FOR INVESTMENT (Geographic Concentration Risk) (Details)	3 Months Ended
	Mar. 31, 2017
Concentration Risk [Line Items]
Concentration risk, percentage	41.10%
Washington [Member] | Assets, Total [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	30.00%
California [Member] | Assets, Total [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	15.00%
Texas [Member] | Assets, Total [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	14.60%

REAL ESTATE HELD FOR INVESTME37

REAL ESTATE HELD FOR INVESTMENT REAL ESTATE HELD FOR INVESTMENT (Recent Acquisition) (Details) $ in Thousands	Feb. 14, 2017USD ($)ft²property	Mar. 31, 2017USD ($)ft²property	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Rentable square feet | ft²		6,000,000
Total real estate, cost		$ 1,322,891		$ 1,227,207
Below-market leases		6,533		6,551
Revenues		37,996	$ 28,365
Costs and expenses		48,794	$ 33,106
Land [Member]
Business Acquisition [Line Items]
Total real estate, cost		346,475		322,499
Building and Building Improvements [Member]
Business Acquisition [Line Items]
Total real estate, cost		922,790		855,744
Tenant Origination and Absorption Costs [Member]
Business Acquisition [Line Items]
Total real estate, cost		$ 53,626		$ 48,964
Office Properties [Member]
Business Acquisition [Line Items]
Number of real estate properties acquired | property		9
Crown Pointe [Member]
Business Acquisition [Line Items]
Revenues		$ 1,200
Costs and expenses		$ 900
Crown Pointe [Member] | Office Properties [Member]
Business Acquisition [Line Items]
Number of real estate properties acquired | property	2
Rentable square feet | ft²	499,968
Purchase price	$ 83,100
Capitalized acquisition costs	1,100
Below-market leases	$ 1,000
Crown Pointe [Member] | Office Properties [Member] | Below-Market Lease Liabilities [Member] | Weighted Average [Member]
Business Acquisition [Line Items]
Remaining amortization period	4 years 2 months 12 days
Crown Pointe [Member] | Office Properties [Member] | Tenant Origination and Absorption Costs [Member] | Weighted Average [Member]
Business Acquisition [Line Items]
Remaining amortization period	4 years 10 months 24 days
Crown Pointe [Member] | Office Properties [Member] | Land [Member]
Business Acquisition [Line Items]
Total real estate, cost	$ 22,600
Crown Pointe [Member] | Office Properties [Member] | Building and Building Improvements [Member]
Business Acquisition [Line Items]
Total real estate, cost	56,600
Crown Pointe [Member] | Office Properties [Member] | Tenant Origination and Absorption Costs [Member]
Business Acquisition [Line Items]
Total real estate, cost	$ 6,000

TENANT ORIGINATION AND ABSORP38

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities [Abstract]
Tenant Origination And Absorption Costs, Cost	$ 53,626		$ 48,964
Tenant Origination and Absorption Costs, Accumulated Amortization	(25,604)		(23,989)
Tenant Origination and Absorption Costs, Net Amount	28,022		24,975
Tenant Origination and Absorption Costs, Amortization	(2,943)	$ (2,211)
Above-Market Lease Assets, Cost	1,877		1,877
Above-Market Lease Assets, Accumulated Amortization	(1,333)		(1,244)
Above-Market Lease Assets, Net Amount	544		633
Above-Market Lease Assets, Amortization	(89)	(120)
Below-Market Lease Liabilities, Cost	(11,605)		(10,945)
Below-Market Lease Liabilities, Accumulated Amortization	5,072		4,394
Below-Market Lease Liabilities, Net Amount	(6,533)		$ (6,551)
Below-Market Lease Liabilities, Amortization	$ 983	$ 308

TENANT ORIGINATION AND ABSORP39

TENANT ORIGINATION AND ABSORPTION COSTS, ABOVE-MARKET LEASE ASSETS AND BELOW-MARKET LEASE LIABILITIES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities [Line Items]
Tax abatement asset	$ 6,000		$ 6,300
Depreciation and amortization	14,600	$ 11,008
Property Tax Abatement Intangible Asset [Member]
Tenant Origination and Absorption Costs, Above-Market Lease Assets and Below-Market Lease Liabilities [Line Items]
Depreciation and amortization	$ 300	$ 200

REAL ESTATE DEBT SECURITIES (Sc

REAL ESTATE DEBT SECURITIES (Schedule of Investments in Debt Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Investment [Line Items]
Outstanding Principal Balance	$ 10,000	$ 5,000
Book Value	9,754	4,683
Point Trust LLC [Member] | Series B Preferred Units [Member]
Investment [Line Items]
Outstanding Principal Balance	10,000
Book Value	$ 9,754	$ 4,683
Contractual Interest Rate	9.00%
Annualized Effective Interest Rate	13.10%

REAL ESTATE DEBT SECURITIES (41

REAL ESTATE DEBT SECURITIES (Schedule of Activity of Real Estate Securities) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Held-to-maturity Securities [Roll Forward]
Real estate debt securities - December 31, 2015	$ 5,000
Real estate debt securities - December 31, 2016	10,000
Debt Securities [Member]
Held-to-maturity Securities [Roll Forward]
Real estate debt securities - December 31, 2015	4,683
Face value of real estate debt securities acquired	5,000
Deferred interest receivable and interest accretion	44
Commitment fee, net of closing costs and acquisition fee	2
Accretion of commitment fee, net of closing costs	25
Real estate debt securities - December 31, 2016	$ 9,754

REAL ESTATE DEBT SECURITIES (In

REAL ESTATE DEBT SECURITIES (Interest Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Investment [Line Items]
Contractual interest income	$ 25	$ 5
Debt Securities [Member]
Investment [Line Items]
Contractual interest income	91
Interest accretion	44
Accretion of commitment fee, net of closing costs and acquisition fee	25
Interest income from real estate debt securities	$ 160

NOTES AND BOND PAYABLE (Narrati

NOTES AND BOND PAYABLE (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Interest expense	$ 9,386	$ 5,176
Amortization of deferred financing costs	1,299	721
Interest capitalized	564	$ 458
Deferred finance costs	12,500		$ 12,500
Interest payable	$ 2,900		5,300
Notes and Bonds Payable [Member]
Debt Instrument [Line Items]
Deferred finance costs			12,400
Prepaid Expenses and Other Current Assets [Member]
Debt Instrument [Line Items]
Deferred finance costs			$ 100

NOTES AND BOND PAYABLE (Schedul

NOTES AND BOND PAYABLE (Schedule of Long-term Debt Instruments) (Details) - USD ($)	1 Months Ended	3 Months Ended
	May 01, 2017	Mar. 31, 2017	Dec. 31, 2016	May 01, 2013
Debt Instrument [Line Items]
Notes and Bond Payable Principal Outstanding		$ 1,030,499,000	$ 962,930,000
Debt Instrument, Unamortized Premium		99,000	88,000
Deferred financing costs, net		(12,497,000)	(12,394,000)
Notes and Bond Payable, Net		1,018,101,000	950,624,000
Interest Rate Cap [Member]
Debt Instrument [Line Items]
Notional amount		115,500,000
Interest Rate Cap 1 [Member]
Debt Instrument [Line Items]
Notional amount		$ 46,900,000
One-month LIBOR [Member] | Interest Rate Cap [Member]
Debt Instrument [Line Items]
Reference Rate		3.00%
One-month LIBOR [Member] | Interest Rate Cap 1 [Member]
Debt Instrument [Line Items]
Reference Rate		3.00%
Mortgages [Member] | Richardson Portfolio [Member]
Debt Instrument [Line Items]
Notes payable		$ 40,435,000	40,594,000
Interest rate, effective percentage		2.89%
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		$ 59,220,000	59,400,000
Interest rate, effective percentage		3.03%
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		$ 11,559,000	11,799,000
Interest rate, effective percentage		3.03%
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 Revolving Loan Facility [Member] | One-month LIBOR [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.75%
Mortgages [Member] | Portfolio Revolving Loan Facility [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 63,500,000
Unused borrowing capacity, amount		$ 63,500,000
Mortgages [Member] | Portfolio Revolving Loan Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 30
Mortgages [Member] | Portfolio Revolving Loan Facility [Member] | Non-Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 12,200,000
Amount outstanding		11,600,000
Unused borrowing capacity, amount		600,000
Mortgages [Member] | Portfolio Revolving Loan Facility [Member] | Non-Revolving Credit Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 45
Mortgages [Member] | Portfolio Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable		$ 107,483,000	106,479,000
Interest rate, effective percentage		3.03%
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		$ 9,711,000	9,812,000
Interest rate, effective percentage		3.16%
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		$ 31,429,000	31,525,000
Interest rate, effective percentage		2.68%
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		$ 6,595,000	6,635,000
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	27,600,000
Interest rate, effective percentage		2.53%
Mortgages [Member] | Maitland Promenade II Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable		$ 20,774,000	20,877,000
Interest rate, effective percentage		3.69%
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		$ 61,940,000	62,000,000
Interest rate, effective percentage		3.03%
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		$ 109,545,000	109,866,000
Interest rate, effective percentage		2.68%
Mortgages [Member] | Plaza Buildings Senior Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.90%
Mortgages [Member] | 424 Bedford Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable		$ 24,693,000	24,832,000
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	31,000,000
Basis spread on variable rate		2.25%
Interest rate, effective percentage		3.03%
Mortgages [Member] | KBS SOR (BVI) Holdings, Ltd. Series A Debentures [Member]
Debt Instrument [Line Items]
Notes payable		$ 267,782,000	251,811,000
Contractual interest rate, percentage		4.25%
Interest rate, effective percentage		4.25%
Mortgages [Member] | Westpark Portfolio Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable		$ 83,200,000	83,200,000
Interest rate, effective percentage		3.28%
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]
Notes payable		$ 87,033,000	85,500,000
Interest rate, effective percentage		3.66%
Amount outstanding		$ 87,000,000
Unused borrowing capacity, amount		$ 28,500,000
Mortgages [Member] | 353 Sacramento Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		2.75%
Mortgages [Member] | Crown Pointe Mortgage Loan [Member]
Debt Instrument [Line Items]
Notes payable		$ 50,500,000	$ 0
Interest rate, effective percentage		3.38%
Amount outstanding		$ 50,500,000
Unused borrowing capacity, amount		$ 12,000,000
Mortgages [Member] | Crown Pointe Mortgage Loan [Member] | One-month LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		2.60%

NOTES AND BOND PAYABLE (Sched45

NOTES AND BOND PAYABLE (Schedule of Maturities of Long-term Debt) (Details) $ in Thousands	Mar. 31, 2017USD ($)
Notes and Bonds Payable [Abstract]
April 1, 2017 through December 31, 2017	$ 234,433
2,018	307,111
2,019	113,406
2,020	186,570
2,021	54,435
Thereafter	134,544
Notes and bond payable outstanding	$ 1,030,499

NOTES AND BOND PAYABLE (Recent

NOTES AND BOND PAYABLE (Recent Bond Financing) (Details)	Mar. 07, 2016ILS (₪)	Mar. 02, 2016ILS (₪)	Mar. 01, 2016ILS (₪)	Mar. 31, 2016USD ($)	Mar. 31, 2016ILS (₪)	Mar. 31, 2017USD ($)instrument
Foreign Exchange Contract [Member]
Debt Instrument [Line Items]
Number of Instruments | instrument						4
Notional amount | $						$ 250,000,000
Bonds Payable [Member] | Series A Debentures [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | ₪		₪ 1,000,000,000
Interest rate during period				4.25%	4.25%
Proceeds from issuance of debt	₪ 127,700,000		₪ 842,500,000	$ 249,200,000	₪ 970,200,000
Principal installment payments required as percent of total debt		20.00%
Bonds Payable [Member] | Series A Debentures [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate during period		4.25%

DERIVATIVE INSTRUMENTS (Notiona

DERIVATIVE INSTRUMENTS (Notional Amount) (Details) - Not Designated as Hedging Instrument [Member]	3 Months Ended
	Mar. 31, 2017USD ($)
Foreign Currency Collars [Member]
Derivative [Line Items]
Notional Amount	$ 250,000,000
Foreign Currency Collar 1 [Member]
Derivative [Line Items]
Notional Amount	$ 100,000,000
Maturity Date	Aug. 8, 2017
Foreign Currency Collar 1 [Member] | Minimum [Member]
Derivative [Line Items]
Strike Price	3.72
Foreign Currency Collar 1 [Member] | Maximum [Member]
Derivative [Line Items]
Strike Price	3.83
Foreign Currency Collar 2 [Member]
Derivative [Line Items]
Notional Amount	$ 50,000,000
Maturity Date	Aug. 16, 2017
Foreign Currency Collar 2 [Member] | Minimum [Member]
Derivative [Line Items]
Strike Price	3.67
Foreign Currency Collar 2 [Member] | Maximum [Member]
Derivative [Line Items]
Strike Price	3.77
Foreign Currency Collar 3 [Member]
Derivative [Line Items]
Notional Amount	$ 50,000,000
Maturity Date	Aug. 16, 2017
Foreign Currency Collar 3 [Member] | Minimum [Member]
Derivative [Line Items]
Strike Price	3.68
Foreign Currency Collar 3 [Member] | Maximum [Member]
Derivative [Line Items]
Strike Price	3.78
Foreign Currency Collar 4 [Member]
Derivative [Line Items]
Notional Amount	$ 50,000,000
Maturity Date	Aug. 22, 2017
Foreign Currency Collar 4 [Member] | Minimum [Member]
Derivative [Line Items]
Strike Price	3.67
Foreign Currency Collar 4 [Member] | Maximum [Member]
Derivative [Line Items]
Strike Price	3.77

DERIVATIVE INSTRUMENTS (Balance

DERIVATIVE INSTRUMENTS (Balance Sheets) (Details)	3 Months Ended
	Mar. 31, 2017USD ($)instrument	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)instrument
Derivative [Line Items]
Foreign currency transaction loss, net	$ 4,671,000	$ 303,000
Interest Rate Cap [Member]
Derivative [Line Items]
Maturity Date	Oct. 14, 2018
Notional Amount	$ 115,500,000
Unrealized loss on derivatives	$ 100,000
Interest Rate Cap [Member] | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative [Line Items]
Number of Instruments | instrument	2		1
Derivative Asset	$ 62,000		$ 12,000
Interest Rate Cap [Member] | One-month LIBOR [Member]
Derivative [Line Items]
Reference Rate	3.00%
Interest Rate Cap 1 [Member]
Derivative [Line Items]
Maturity Date	Feb. 13, 2020
Notional Amount	$ 46,900,000
Interest Rate Cap 1 [Member] | One-month LIBOR [Member]
Derivative [Line Items]
Reference Rate	3.00%
Foreign Currency Collars [Member]
Derivative [Line Items]
Gain recognized on derivatives	$ 11,100,000
Foreign currency transaction loss, net	15,800,000
Foreign Currency Collars [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	$ 250,000,000
Foreign Currency Collars [Member] | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative [Line Items]
Number of Instruments | instrument	4
Derivative Asset	$ 7,227,000
Foreign Currency Collars [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivative [Line Items]
Number of Instruments | instrument			4
Derivative Liability			$ (3,910,000)

FAIR VALUE DISCLOSURES (Schedul

FAIR VALUE DISCLOSURES (Schedule of Face Value, Carrying Amounts and Fair Value) (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Real estate debt securities, Face Value	$ 10,000,000	$ 5,000,000
Real estate debt securities, Value	9,754,000	4,683,000
Notes and bond payable, Face Value	762,717,000	711,119,000
Series A Debentures [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and bond payable, Face Value	267,782,000	251,811,000
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Real estate debt securities, Value	9,754,000	4,683,000
Notes and bond payable, Value	758,223,000	707,169,000
Carrying Amount [Member] | Series A Debentures [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and bond payable, Value	259,878,000	243,455,000
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Real estate debt securities, Value	9,789,000	4,683,000
Notes and bond payable, Value	763,219,000	711,425,000
Fair Value [Member] | Series A Debentures [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and bond payable, Value	$ 273,834,000	$ 253,120,000

FAIR VALUE DISCLOSURES (Sched50

FAIR VALUE DISCLOSURES (Schedule of Assets and Liabilities at Fair Value) (Details) - Recurring Basis [Member] $ in Thousands	Mar. 31, 2017USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset derivatives - interest rate caps	$ 62
Asset derivatives - foreign currency collars	7,227
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset derivatives - interest rate caps	0
Asset 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]
Asset derivatives - interest rate caps	62
Asset derivatives - foreign currency collars	7,227
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset derivatives - interest rate caps	0
Asset derivatives - foreign currency collars	$ 0

RELATED PARTY TRANSACTIONS (Det

RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Related Party Transaction [Line Items]
Payable as of	$ 27		$ 55
Payment for administrative fees	55	$ 44
Due from affiliate	269		0
Advisor and Dealer Manager [Member]
Related Party Transaction [Line Items]
Incurred	3,653	2,132
Payable as of	27		55
Advisor and Dealer Manager [Member] | Asset Management Fees [Member]
Related Party Transaction [Line Items]
Expenses	2,748	2,088
Payable as of	0		0
Advisor and Dealer Manager [Member] | Reimbursement of Operating Expenses [Member]
Related Party Transaction [Line Items]
Expenses	69	44
Payable as of	27		55
Advisor and Dealer Manager [Member] | Acquisition Fees on Real Estate [Member]
Related Party Transaction [Line Items]
Incurred	836	0
Payable as of	$ 0		$ 0
KBS Capital Advisors LLC [Member] | Property Insurance Rebate and Legal Fees [Member]
Related Party Transaction [Line Items]
Due from affiliate		$ 300

INVESTMENT IN UNCONSOLIDATED 52

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Narrative) (Details) $ in Thousands	May 18, 2012USD ($)ft²property	Mar. 31, 2017USD ($)ft²property	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)	May 02, 2014ft²
Schedule of Equity Method Investments [Line Items]
Number of real estate properties | property		21
Rentable square feet | ft²		6,000,000
Initial capital contribution		$ 0	$ 600
Investments in unconsolidated joint ventures		16,538		$ 75,849
Income from unconsolidated joint venture		1,869	$ 0
110 William JV Partner [Member]
Schedule of Equity Method Investments [Line Items]
Return of capital		38,800
NIP Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Rentable square feet | ft²	5,200,000
Initial capital contribution	$ 8,000
Investments in unconsolidated joint ventures		4,317		5,305
Distributions		2,900
Income from unconsolidated joint venture		1,900
Return of capital		$ 1,000
NIP Joint Venture [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest	5.00%	5.00%
NIP Joint Venture [Member] | Industrial [Member]
Schedule of Equity Method Investments [Line Items]
Number of real estate properties | property	12
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%
Investments in unconsolidated joint ventures		$ 12,221		$ 70,544
Return of capital		58,200
Area of land | ft²					0.8
Acquisition related costs		$ 1,500
110 William Joint Venture [Member] | 110 William JV Partner [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest					60.00%
Noncontrolling interest					40.00%

INVESTMENT IN UNCONSOLIDATED 53

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Investments in Unconsolidated Joint Ventures) (Details) $ in Thousands	Mar. 31, 2017USD ($)property	Dec. 31, 2016USD ($)	May 18, 2012
Schedule of Equity Method Investments [Line Items]
Number of Properties | property	21
Investment Balance	$ 16,538	$ 75,849
OCM NIP JV Holdings, L.P. and HC KBS NIP JV, LLC (“HC-KBS”) [Member]
Schedule of Equity Method Investments [Line Items]
Investment Balance	$ 4,317	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%		5.00%
110 William Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Number of Properties | property	1
Ownership %	60.00%
Investment Balance	$ 12,221	$ 70,544

INVESTMENT IN UNCONSOLIDATED 54

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Summarized Financial Information - 110 William Joint Venture) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Balance Sheet Related Disclosures [Abstract]
Real estate assets, net of accumulated depreciation and amortization	$ 1,192,127		$ 1,107,031
Total assets	1,363,676		1,310,116
Other liabilities	15,396		18,095
Total liabilities and equity	1,363,676		1,310,116
Income Statement [Abstract]
Revenues	37,996	$ 28,365
Operating, maintenance, and management	10,908	9,520
Real estate taxes and insurance	4,737	3,874
Depreciation and amortization	14,600	11,008
Interest expense	9,386	5,176
Total expenses	48,794	33,106
Net loss attributable to common stockholders	(9,092)	(4,894)
Company’s equity in loss of unconsolidated joint venture	154	196
110 William Joint Venture [Member]
Balance Sheet Related Disclosures [Abstract]
Real estate assets, net of accumulated depreciation and amortization	260,159		262,192
Other assets	26,668		23,355
Total assets	286,827		285,547
Notes payable, net	257,155		157,628
Other liabilities	11,814		12,872
Partners’ capital	17,858		115,047
Total liabilities and equity	286,827		$ 285,547
Income Statement [Abstract]
Revenues	8,392	8,251
Operating, maintenance, and management	2,396	2,505
Real estate taxes and insurance	1,617	1,434
Depreciation and amortization	3,232	3,121
Interest expense	1,400	1,516
Total expenses	8,645	8,576
Other income	14	16
Net loss attributable to common stockholders	(239)	(309)
Company’s equity in loss of unconsolidated joint venture	$ 154	$ (196)

INVESTMENT IN UNCONSOLIDATED 55

INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (110 William Joint Venture Refinance) (Details)	Mar. 06, 2017USD ($)instrumentextension	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	May 02, 2014USD ($)
Schedule of Equity Method Investments [Line Items]
Face amount		$ 762,717,000	$ 711,119,000
Extinguishment of debt	$ 156,000,000
Interest Rate Cap [Member]
Schedule of Equity Method Investments [Line Items]
Notional amount		$ 115,500,000
One-month LIBOR [Member] | Interest Rate Cap [Member]
Schedule of Equity Method Investments [Line Items]
Reference Rate		3.00%
110 William Street Existing Loans [Member] | Mortgages [Member]
Schedule of Equity Method Investments [Line Items]
Face amount				$ 141,500,000
110 William Street Existing Loans [Member] | Mezzanine Loan [Member]
Schedule of Equity Method Investments [Line Items]
Face amount				$ 20,000,000
Refinancing Loans [Member] | Interest Rate Cap [Member]
Schedule of Equity Method Investments [Line Items]
Notional amount	275,000,000
Refinancing Loans [Member] | Interest Rate Cap [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Notional amount	$ 300,000,000
Refinancing Loans [Member] | One-month LIBOR [Member] | Interest Rate Cap [Member]
Schedule of Equity Method Investments [Line Items]
Number of instruments | instrument	3
Reference Rate	3.00%
Refinancing Loans [Member] | Mortgages [Member]
Schedule of Equity Method Investments [Line Items]
Number of extensions | extension	3
Extension period	1 year
110 William Street Mortgage Loan [Member] | Mortgages [Member]
Schedule of Equity Method Investments [Line Items]
Face amount	$ 232,300,000
Amount outstanding	205,000,000
Unused borrowing capacity, amount	$ 27,300,000
110 William Street Mortgage Loan [Member] | Mortgages [Member] | One-month LIBOR [Member]
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate	2.2472%
110 William Street Senior Mezzanine Loan [Member] | Mezzanine Loan [Member]
Schedule of Equity Method Investments [Line Items]
Face amount	$ 33,800,000
Amount outstanding	29,850,000
Unused borrowing capacity, amount	$ 4,000,000
110 William Street Senior Mezzanine Loan [Member] | Mezzanine Loan [Member] | One-month LIBOR [Member]
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate	6.25%
110 William Street Junior Mezzanine Loan [Member] | Mezzanine Loan [Member]
Schedule of Equity Method Investments [Line Items]
Face amount	$ 33,800,000
Amount outstanding	29,850,000
Unused borrowing capacity, amount	$ 4,000,000

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) $ in Millions	May 01, 2017USD ($)a	Apr. 13, 2017USD ($)	Jul. 11, 2013aft²
50 Congress Street [Member]
Subsequent Event [Line Items]
Area of land | a			0.4
Net rentable area | ft²			179,872
Subsequent Event [Member] | Park Highlands [Member] | Disposed of by Sale [Member]
Subsequent Event [Line Items]
Area of land | a	102
Sale price | $	$ 18.4
Subsequent Event [Member] | 50 Congress Street [Member]
Subsequent Event [Line Items]
Sale price | $		$ 79