Carter Validus Mission Critical REIT 10-K 22 Mar 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Mar. 18, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Registrant Name	Carter Validus Mission Critical REIT, Inc.
Entity Central Index Key	0001482974
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 1,802,908
Entity Common Stock, Shares Outstanding		180,648

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Real estate:
Land	$ 72,700	$ 73,769
Buildings and improvements, less accumulated depreciation of $100,897 and $86,092, respectively	806,637	834,419
Total real estate, net	879,337	908,188
Cash and cash equivalents	43,133	336,500
Acquired intangible assets, less accumulated amortization of $23,822 and $23,640, respectively	59,681	86,938
Other assets, net	40,964	79,140
Assets of discontinued operations, net ($0 and $6,852, respectively, related to VIE)	401	213,833
Total assets	1,023,516	1,624,599
Liabilities:
Notes payable, net of deferred financing costs of $75 and $875, respectively	36,214	140,602
Credit facility	190,000	0
Accounts payable due to affiliates	1,329	2,372
Accounts payable and other liabilities	16,703	28,195
Intangible lease liabilities, less accumulated amortization of $5,712 and $4,694, respectively	16,537	17,555
Liabilities of discontinued operations, net ($0 and $599, respectively, related to VIE)	13	5,058
Total liabilities	260,796	193,782
Stockholders’ equity:
Preferred stock, $0.01 par value per share, 50,000,000 shares authorized; none issued and outstanding
Common stock, $0.01 par value per share, 300,000,000 shares authorized; 203,114,678 and 196,892,945 shares issued, respectively; 183,081,839 and 186,181,545 shares outstanding, respectively	1,831	1,862
Additional paid-in capital	1,612,969	1,635,329
Accumulated distributions in excess of earnings	(852,505)	(211,750)
Accumulated other comprehensive income	425	407
Total stockholders’ equity	762,720	1,425,848
Noncontrolling interests	0	4,969
Total equity	762,720	1,430,817
Total liabilities and stockholders’ equity	$ 1,023,516	$ 1,624,599

CONSOLIDATED BALANCE SHEETS (PA

CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Buildings and improvements, accumulated depreciation	$ 100,897	$ 86,092
Acquired intangible assets, accumulated amortization	23,822	23,640
Assets of discontinued operations, net	401	213,833
Notes payable, deferred financing costs	75	875
Intangible lease liabilities, accumulated amortization	5,712	4,694
Liabilities of discontinued operations, net	$ 13	$ 5,058
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
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	300,000,000	300,000,000
Common stock, shares issued	203,114,678	196,892,945
Common stock, shares outstanding	183,081,839	186,181,545
Variable Interest Entity, Primary Beneficiary [Member]
Assets of discontinued operations, net	$ 0	$ 6,852
Liabilities of discontinued operations, net	$ 0	$ 599

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue:
Rental revenue	$ 91,226	$ 106,612	$ 111,167
Provision for doubtful accounts related to rental revenue	(36,478)	(17,930)	(24,628)
Tenant reimbursement revenue	5,898	8,557	5,247
Provision for doubtful accounts related to tenant reimbursement revenue	(4,284)	(2,825)	(1,549)
Total revenue	56,362	94,414	90,237
Expenses:
Rental expenses	11,225	13,071	8,972
General and administrative expenses	6,004	7,185	6,251
Acquisition related expenses	0	0	1,667
Asset management fees	9,809	10,611	10,956
Depreciation and amortization	51,001	33,540	47,591
Total expenses	78,039	64,407	75,437
(Loss) income from operations	(21,677)	30,007	14,800
Other income (expense):
Other interest and dividend income	3,763	3,147	13,295
Interest expense, net	(13,506)	(19,109)	(23,323)
Provision for loan losses	(2,782)	(11,936)	(4,294)
Impairment loss on real estate	(6,588)	(39,147)	0
Gain on real estate dispositions	218	0	0
Total other expense	(18,895)	(67,045)	(14,322)
(Loss) income from continuing operations	(40,572)	(37,038)	478
Income from discontinued operations	36,591	261,675	34,679
Net (loss) income	(3,981)	224,637	35,157
Net loss (income) attributable to noncontrolling interests in consolidated partnerships	22	(47,326)	(3,921)
Net (loss) income attributable to common stockholders	(3,959)	177,311	31,236
Other comprehensive income (loss):
Unrealized income (loss) on interest rate swaps, net	18	(1,416)	4,403
Other comprehensive income (loss)	18	(1,416)	4,403
Comprehensive (loss) income	(3,963)	223,221	39,560
Comprehensive loss (income) attributable to noncontrolling interests in consolidated partnerships	22	(47,326)	(3,921)
Comprehensive (loss) income attributable to common stockholders	$ (3,941)	$ 175,895	$ 35,639
Weighted average number of common shares outstanding:
Basic (in shares)	182,667,312	185,922,468	183,279,872
Diluted (in shares)	182,667,312	185,922,468	183,297,662
Basic:
Continuing operations (in dollars per share)	$ (0.22)	$ (0.20)	$ 0
Discontinued operations (in dollars per share)	0.20	1.15	0.17
Net (loss) income attributable to common stockholders (in dollars per share)	(0.02)	0.95	0.17
Diluted:
Continuing operations (in dollars per share)	(0.22)	(0.20)	0
Discontinued operations (in dollars per share)	0.20	1.15	0.17
Net (loss) income attributable to common stockholders (in dollars per share)	$ (0.02)	$ 0.95	$ 0.17

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Distributions in Excess of Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Stockholders' Equity [Member]	Noncontrolling Interests [Member]
Balance, (in shares) at Dec. 31, 2015		181,200,952
Balance, at Dec. 31, 2015	$ 1,462,176	$ 1,812	$ 1,591,076	$ (161,798)	$ (2,580)	$ 1,428,510	$ 33,666
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock (in shares)		9,000
Vesting of restricted stock	90		90			90	0
Issuance of common stock under the distribution reinvestment plan (in shares)		7,131,264
Issuance of common stock under the distribution reinvestment plan	68,086	$ 71	68,015			68,086	0
Distributions to noncontrolling interests	(3,299)					0	(3,299)
Distributions declared to common stockholders	(128,316)			(128,316)		(128,316)	0
Other offering costs	(18)		(18)			(18)	0
Repurchase of common stock (in shares)		(3,431,543)
Repurchase of common stock	(33,335)	$ (34)	(33,301)			(33,335)	0
Other comprehensive income (loss)	4,403				4,403	4,403	0
Net (loss) income	35,157			31,236		31,236	3,921
Balance, (in shares) at Dec. 31, 2016		184,909,673
Balance, at Dec. 31, 2016	1,404,944	$ 1,849	1,625,862	(258,878)	1,823	1,370,656	34,288
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock (in shares)		9,000
Vesting of restricted stock	88		88			88	0
Issuance of common stock under the distribution reinvestment plan (in shares)		7,035,781
Issuance of common stock under the distribution reinvestment plan	66,993	$ 71	66,922			66,993	0
Purchase of noncontrolling interests	(500)		(500)			(500)	0
Distributions to noncontrolling interests	(76,645)					0	(76,645)
Distributions declared to common stockholders	(130,183)			(130,183)		(130,183)	0
Other offering costs	(52)		(52)			(52)	0
Repurchase of common stock (in shares)		(5,772,909)
Repurchase of common stock	(57,049)	$ (58)	(56,991)			(57,049)	0
Other comprehensive income (loss)	(1,416)				(1,416)	(1,416)	0
Net (loss) income	$ 224,637			177,311		177,311	47,326
Balance, (in shares) at Dec. 31, 2017	186,181,545	186,181,545
Balance, at Dec. 31, 2017	$ 1,430,817	$ 1,862	1,635,329	(211,750)	407	1,425,848	4,969
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock (in shares)		9,000
Vesting of restricted stock	86		86			86	0
Issuance of common stock under the distribution reinvestment plan (in shares)		6,212,732
Issuance of common stock under the distribution reinvestment plan	41,819	$ 62	41,757			41,819	0
Distributions to noncontrolling interests	(4,947)					0	(4,947)
Distributions declared to common stockholders	(636,796)			(636,796)		(636,796)	0
Other offering costs	(7)		(7)			(7)	0
Repurchase of common stock (in shares)		(9,321,438)
Repurchase of common stock	(64,289)	$ (93)	(64,196)			(64,289)	0
Other comprehensive income (loss)	18				18	18	0
Net (loss) income	$ (3,981)			(3,959)		(3,959)	(22)
Balance, (in shares) at Dec. 31, 2018	183,081,839	183,081,839
Balance, at Dec. 31, 2018	$ 762,720	$ 1,831	$ 1,612,969	$ (852,505)	$ 425	$ 762,720	$ 0

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net (loss) income	$ (3,981)	$ 224,637	$ 35,157
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	51,001	65,750	86,335
Amortization of deferred financing costs	2,321	3,778	4,576
Amortization of above-market leases	619	353	421
Amortization of intangible lease liabilities	(1,119)	(3,471)	(3,718)
Gain on real estate dispositions from discontinued operations	(33,251)	(224,133)	0
Gain on real estate dispositions from continuing operations	(218)	0	0
Provision for doubtful accounts	22,716	18,733	6,007
Provision for loan losses	2,782	11,936	4,294
Impairment loss on real estate	6,588	39,147	0
Loss on debt extinguishment	207	4,513	1,133
Straight-line rent	9,534	(13,342)	(3,941)
Stock-based compensation	86	88	90
Change in fair value of contingent consideration	0	(2,920)	300
Changes in operating assets and liabilities:
Accounts payable and other liabilities	(9,197)	1,503	4,087
Accounts payable due to affiliates	(1,194)	(106)	405
Other assets	(23,295)	(21,188)	(12,325)
Net cash provided by operating activities	23,599	105,278	122,821
Cash flows from investing activities:
Investment in real estate	0	0	(71,000)
Proceeds from real estate disposals of continuing and discontinued operations	241,043	1,131,582	0
Proceeds from the sale of equipment	20,900	0	0
Capital expenditures	(4,994)	(23,765)	(69,496)
Capital distributions from unconsolidated partnership	965	0	0
Real estate deposits, net	0	0	450
Collections of real estate-related notes receivable	0	514	0
Preferred equity investment	0	0	127,147
Notes receivable, net	(2,700)	(15,500)	(5,919)
Net cash provided by (used in) investing activities	255,214	1,092,831	(18,818)
Cash flows from financing activities:
Payments on notes payable	(105,188)	(345,335)	(56,521)
Proceeds from credit facility	285,000	121,000	185,000
Payments on credit facility	(95,000)	(479,000)	(120,000)
Proceeds from debt extinguishment	338	4,641	0
Payments on debt extinguishment	0	(7,573)	(790)
Payments of deferred financing costs	(2,254)	(1,788)	(467)
Repurchase of common stock	(64,289)	(57,049)	(33,335)
Other offering costs	(7)	(52)	(18)
Distributions to stockholders	(601,079)	(63,082)	(60,038)
Purchase of noncontrolling interests	0	(500)	0
Distributions to noncontrolling interests	(4,947)	(75,062)	(3,299)
Net cash used in financing activities	(587,426)	(903,800)	(89,468)
Net change in cash, cash equivalents and restricted cash	(308,613)	294,309	14,535
Cash, cash equivalents and restricted cash - Beginning of year	351,914	57,605	43,070
Cash, cash equivalents and restricted cash - End of year	43,301	351,914	57,605
Supplemental cash flow disclosure:
Interest paid, net of interest capitalized of $225, $2,771 and $2,859, respectively	11,872	35,432	34,980
Supplemental disclosure of non-cash transactions:
Common stock issued through distribution reinvestment plan	41,819	66,993	68,086
Deemed distributions related to taxes withheld	$ 0	$ 1,992	$ 0

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (PARENTHETICAL) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Interest capitalized	$ 225	$ 2,771	$ 2,859

Organization and Business Opera

Organization and Business Operations	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Business Operations	Organization and Business Operations Carter Validus Mission Critical REIT, Inc., or the Company, a Maryland corporation, was incorporated on December 16, 2009, and has elected to be taxed, and currently qualifies, as a real estate investment trust, or a REIT, under the Internal Revenue Code of 1986, as amended, or the Code, for federal income tax purposes. The Company was organized to acquire and operate a diversified portfolio of income-producing commercial real estate, with a focus on the data center and healthcare property sectors, net leased to creditworthy tenants, as well as to make other real estate-related investments that relate to such property types. During the year ended December 31, 2017, the Company's board of directors made a determination to sell the Company's data center assets. This decision represented a strategic shift that had a major effect on the Company's results and operations and assets and liabilities for the years presented. As a result, the Company classified the assets in its data centers segment as discontinued operations. During the year ended December 31, 2017, the Company sold 16 properties, which consisted of 15 data center properties and one healthcare property. During the year ended December 31, 2018, the Company sold seven properties, which consisted of five data center properties and two healthcare properties. As a result, as of December 31, 2018 , the Company had completed the disposition of all its data center properties. As of December 31, 2018 , the Company owned 30 real estate investments, consisting of 61 properties, all of which were part of the healthcare portfolio. On January 22, 2018, in connection with the Company's dispositions in 2017 and 2018, the Company's board of directors declared a special cash distribution of $3.00 per share of common stock. The special cash distribution was funded with the proceeds from the disposition of certain real estate properties between December 2017 and January 2018. The special cash distribution was paid on March 16, 2018, to stockholders of record at the close of business on February 15, 2018, in the aggregate amount of approximately $556,227,000 . The Company operates through one reportable segment—commercial real estate investments in healthcare. Substantially all of the Company’s business is conducted through Carter/Validus Operating Partnership, LP, a Delaware limited partnership, or the Operating Partnership. The Company is the sole general partner of the Operating Partnership, and Carter/Validus Advisors, LLC, or the Advisor, the Company’s affiliated advisor, is the special limited partner of the Operating Partnership. Except as the context otherwise requires, “we,” “our,” “us,” and the “Company” refer to Carter Validus Mission Critical REIT, Inc., the Operating Partnership, all majority-owned subsidiaries and controlled subsidiaries.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The summary of significant accounting policies presented below is designed to assist in understanding the consolidated financial statements. Such consolidated financial statements and the accompanying notes thereto are the representations of management. These accounting policies conform to accounting principles generally accepted in the United States of America, or GAAP, in all material respects, and have been consistently applied in preparing the consolidated financial statements. Principles of Consolidation and Basis of Presentation The accompanying consolidated financial statements include the accounts of the Company, the Operating Partnership, all majority-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP necessarily requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. These estimates are made and evaluated on an ongoing basis using information that is currently available as well as various other assumptions believed to be reasonable under the circumstances. Actual results could differ from those estimates. Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents may include cash and short-term investments. Short-term investments are stated at cost, which approximates fair value. Restricted Cash Restricted cash consists of restricted cash held in escrow and restricted bank deposits. Restricted cash held in escrow includes cash held by lenders in escrow accounts for tenant and capital improvements, repairs and maintenance and other lender reserves for certain properties, in accordance with the respective lender’s loan agreement. Restricted cash held in escrow is reported in other assets, net, in the accompanying consolidated balance sheets . Restricted bank deposits consist of tenant receipts for certain properties which are required to be deposited into lender controlled accounts in accordance with the respective lender's loan agreement. Restricted bank deposits are reported in other assets, net, in the accompanying consolidated balance sheets . See Note 7—"Other Assets, Net." On April 1, 2017, the Company adopted Accounting Standards Update, or ASU, 2016-18, Restricted Cash , or ASU 2016-18. ASU 2016-18 requires that a statement of cash flows explain the change during a reporting period in the total of cash, cash equivalents, and amounts generally described as restricted cash. This ASU states that transfers between cash, cash equivalents, and restricted cash are not part of the Company’s operating, investing, and financing activities. Therefore, 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. The following table presents a reconciliation of the beginning of year and end of year cash, cash equivalents and restricted cash reported within the consolidated balance sheets to the totals shown in the consolidated statements of cash flows (amounts in thousands): For the Year Ended Beginning of year: 2018 2017 2016 Cash and cash equivalents $ 336,500 $ 42,613 $ 28,527 Restricted cash (1) 15,414 14,992 14,543 Cash, cash equivalents and restricted cash $ 351,914 $ 57,605 $ 43,070 End of year: Cash and cash equivalents $ 43,133 $ 336,500 $ 42,613 Restricted cash 168 15,414 (1) 14,992 (1) Cash, cash equivalents and restricted cash $ 43,301 $ 351,914 $ 57,605 (1) Amount attributable to continuing and discontinued operations. Deferred Financing Costs Deferred financing costs are loan fees, legal fees and other third-party costs associated with obtaining financing. These costs are amortized over the terms of the respective financing agreements using the effective interest method. Unamortized deferred financing costs are generally expensed when the associated debt is refinanced or repaid before maturity unless specific rules are met that would allow for the carryover of such costs to the refinanced debt. Costs incurred in seeking financing transactions that do not close are expensed in the period in which it is determined that the financing will not close. Deferred financing costs are recorded as a reduction of the related debt on the accompanying consolidated balance sheets. Deferred financing costs related to a revolving line of credit are recorded in other assets, net, on the accompanying consolidated balance sheets. Investment in Real Estate Real estate costs related to the acquisition, development, construction and improvement of properties are capitalized. Repair and maintenance costs are expensed as incurred and significant replacements and betterments are capitalized. Repair and maintenance costs include all costs that do not extend the useful life of the real estate asset. The Company considers the period of future benefit of an asset in determining the appropriate useful life. Real estate assets, other than land, are depreciated or amortized on a straight-line basis over each asset’s useful life. The Company estimated the useful lives of its assets by class as follows: Buildings and improvements 15 – 40 years Tenant improvements Shorter of lease term or expected useful life Furniture, fixtures, and equipment 3 – 10 years Held for Sale and Discontinued Operations The Company classifies a real estate property as held for sale upon satisfaction all of the following criteria: (i) management commits to a plan to sell a property, (ii) the property is available for immediate sale in its present condition, subject only to terms that are usual and customary for sales of such properties, (iii) there is an active program to locate a buyer, (iv) the property is being actively marketed for sale, (v) the sale of the property is probable and transfer of the asset is expected to be completed within one year, and (vi) actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. Upon the determination to classify a property as held for sale, the Company ceases depreciation and amortization on the real estate properties, including depreciation for tenant improvements, as well as on the amortization of acquired in-place leases. The real estate properties held for sale and associated liabilities are classified separately on the consolidated balance sheets. Such properties are recorded at the lesser of the carrying value or estimated fair value less estimated cost to sell. The Company classifies real estate properties as discontinued operations for all periods presented if they represent a strategic shift that has (or will have) a major effect on the Company's results and operations. The assets, liabilities and operations for the years presented are classified on the consolidated balance sheets and consolidated statements of comprehensive (loss) income as discontinued operations for all periods presented. Impairment of Long Lived Assets The Company continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets may not be recoverable. When indicators of potential impairment suggest that the carrying value of real estate and related intangible assets may not be recoverable, the Company assesses the recoverability of the assets by estimating whether the Company will recover the carrying value of the assets through its undiscounted future cash flows and their eventual disposition. If, based on this analysis, the Company does not believe that it will be able to recover the carrying value of the assets, the Company will record an impairment loss to the extent that the carrying value exceeds the estimated fair value of the assets. When developing estimates of expected future cash flows, the Company makes certain assumptions regarding future market rental income amounts subsequent to the expiration of current lease arrangements, property operating expenses, terminal capitalization and discount rates, the expected number of months it takes to re-lease the property, required tenant improvements and the number of years the property will be held for investment. The use of alternative assumptions in the future cash flow analysis could result in a different determination of the property’s future cash flows and a different conclusion regarding the existence of an impairment, the extent of such loss, if any, as well as the carrying value of the real estate and related assets. In addition, the Company applies a market approach using comparable sales for certain properties. The use of alternative assumptions in the market approach analysis could result in a different determination of the property’s estimated fair value and a different conclusion regarding the existence of an impairment, the extent of such loss, if any, as well as the carrying value of the real estate and related assets. Impairment of Real Estate During the year ended December 31, 2018 , real estate assets related to two healthcare properties with an aggregate carrying amount of $49,103,000 were determined to be impaired, using Level 2 inputs of the fair value hierarchy (defined below). The carrying value of the properties were reduced to their estimated fair value of $42,515,000 , resulting in an impairment charge of $6,588,000 , which is included in impairment loss on real estate in the consolidated statements of comprehensive (loss) income . During the year ended December 31, 2017 , real estate assets related to four properties with an aggregate carrying amount of $85,768,000 were determined to be impaired, using Level 3 inputs of the fair value hierarchy (defined below). The Company used a discounted cash flow analysis and market valuation approach, which required certain judgments to be made by management. The carrying value of the properties were reduced to their estimated fair value of $52,557,000 , resulting in an impairment charge of $33,211,000 , which is included in impairment loss on real estate in the consolidated statements of comprehensive (loss) income . The Company reviews each property based on the highest and best use and market participant assumptions. See Note 13—"Fair Value" for more details. During the year ended December 31, 2017 , the Company recorded an impairment loss of $5,936,000 related to one real estate property, which was sold on December 28, 2017 in the amount of $88,000,000 . The impairment loss is included in impairment loss on real estate in the consolidated statements of comprehensive (loss) income . No impairment losses were recorded during the year ended December 31, 2016 . Impairment of Acquired Intangible Assets and Intangible Lease Liabilities For the year ended December 31, 2018 , the Company recognized an impairment of two in-place lease intangible assets in the amount of approximately $21,505,000 , of which $21,296,000 was related to a former tenant of the Company, Bay Area Regional Medical Center, LLC, or Bay Area, by accelerating the amortization of the intangible assets. On August 13, 2018, the Company terminated its lease agreement with Bay Area. As of December 31, 2018 , the Company does not have any acquired intangible assets or intangible lease liabilities related to Bay Area. In addition, for the year ended December 31, 2018, the Company accelerated the amortization of an above-market lease intangible asset in the amount of $311,000 as a result of a lease termination. For the year ended December 31, 2017 , the Company recognized an impairment of three in-place lease intangible assets in the amount of approximately $1,151,000 by accelerating the amortization of the intangibles as a result of a lease amendment. For the year ended December 31, 2016 , the Company recognized an impairment of one in-place lease intangible asset and one capitalized lease commission by accelerating the amortization in the amount of $16,422,000 as a result of two tenants experiencing financial difficulties. Fair Value Accounting Standards Codification, or ASC, 820, Fair Value Measurements and Disclosures , or ASC 820, defines fair value, establishes a framework for measuring fair value in accordance with GAAP and expands disclosures about fair value measurements. ASC 820 emphasizes that fair value is intended to be a market-based measurement, as opposed to a transaction-specific measurement. Fair value is defined by ASC 820 as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, various techniques and assumptions can be used to estimate the fair value. Assets and liabilities are measured using inputs from three levels of the fair value hierarchy, as follows: Level 1—Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. An active market is defined as a market in which transactions for the assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis. Level 2—Inputs other than quoted prices for similar assets and liabilities in active markets that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data correlation or other means (market corroborated inputs). Level 3—Unobservable inputs, only used to the extent that observable inputs are not available, reflect the Company’s assumptions about the pricing of an asset or liability. The following describes the methods the Company used to estimate the fair value of the Company’s financial assets and liabilities: Cash and cash equivalents, restricted cash, tenant receivables, property escrow deposits, prepaid expenses, accounts payable and accrued liabilities —The Company considered the carrying values of these financial instruments, assets and liabilities, to approximate fair value because of the short period of time between origination of the instruments and their expected realization. Notes payable—Fixed Rate —The fair value is estimated by discounting the expected cash flows on notes payable at current rates at which management believes similar loans would be made considering the terms and conditions of the loan and prevailing market interest rates. Notes payable—Variable Rate —The carrying value of variable rate notes payable approximates fair value because the interest rates adjust with current market conditions. Unsecured credit facility—Fixed Rate —The fair value is estimated by discounting the expected cash flows on the fixed rate unsecured credit facility at current rates at which management believes similar borrowings would be made considering the terms and conditions of the borrowings and prevailing market interest rates. Unsecured credit facility—Variable Rate —The carrying value of the variable rate unsecured credit facility approximates fair value as the interest is calculated at the London Interbank Offered Rate, plus an applicable margin. The interest rate resets to market on a monthly basis. The fair value of the Company's variable rate unsecured credit facility is estimated based on the interest rates currently offered to the Company by financial institutions. Notes receivable —The fair value is estimated by discounting the expected cash flows on the notes at interest rates at which management believes similar loans would be made. Derivative instruments —The Company’s derivative instruments consist of interest rate swaps. These swaps are carried at fair value to comply with the provisions of ASC 820. The fair value of these instruments is determined using interest rate market pricing models. The Company incorporated credit valuation adjustments to appropriately reflect the Company’s nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. Considerable judgment is necessary to develop estimated fair values of financial assets and liabilities. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize, or be liable for on disposition of the financial assets and liabilities. Revenue Recognition, Tenant Receivables and Allowance for Uncollectible Accounts Effective January 1, 2018, the Company recognizes non-rental related revenue in accordance with Accounting Standards Codification, or ASC, 606, Revenue from Contracts with Customers , or ASC 606. The core principle of ASC 606 is that an entity should recognize 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 or services. A five-step transactional analysis is required to determine how and when to recognize revenue. Non-rental revenue, subject to ASC 606, is immaterial to the Company's financial statements. The Company has identified its revenue streams as rental income from leasing arrangements and tenant reimbursement revenue, which are outside the scope of ASC 606. The majority of the Company's revenue is derived from rental revenue which is accounted for in accordance with ASC 840, Leases . In accordance with ASC 840, Leases , minimum rental revenue is recognized on a straight-line basis over the term of the related lease (including rent holidays). Differences between rental income recognized and amounts contractually due under the lease agreements are credited or charged to straight-line rent receivable or straight-line rent liability, as applicable. Tenant reimbursement revenue, which is comprised of additional amounts recoverable from tenants for common area maintenance expenses and certain other recoverable expenses, is recognized when the services are provided and the performance obligations are satisfied. Tenant receivables and unbilled straight-line rent receivables are carried net of the allowances for uncollectible current tenant receivables and unbilled deferred rent. An allowance will be maintained for estimated losses resulting from the inability of certain tenants to meet the contractual obligations under their lease agreements. The Company also maintains an allowance for straight-line rent receivables arising from the straight-lining of rents. The Company’s determination of the adequacy of these allowances is based primarily upon evaluations of historical loss experience, the tenant’s financial condition, security deposits, letters of credit, lease guarantees and current economic conditions and other relevant factors. For the years ended December 31, 2018 , 2017 and 2016 , the Company recorded $36,478,000 , $17,930,000 and $24,628,000 , respectively, in provision for doubtful accounts for rental revenue and straight-line rent receivable, which are recorded as a reduction in revenue in the accompanying consolidated statements of comprehensive (loss) income . Of the $36,478,000 recorded for the year ended December 31, 2018 , $33,242,000 related to Bay Area. As of December 31, 2018 , the Company had fully reserved for and written off all its outstanding accounts receivable for rental revenue and straight-line rent receivable related to delinquent accounts. On October 24, 2018, the Company entered into a lease agreement with a new tenant, the Board of Regents of the University of Texas System, or the Board of Regents, which is an affiliate of the University of Texas Medical Branch, or UTMB, to lease the UTMB Health Clear Lake Campus (formerly known as the Bay Area Regional Medical Center) property. The lease agreement has an initial 15 -year term with three 5 -year renewal terms exercisable at the option of the Board of Regents, (subject to certain conditions) and provides for a fixed base rent for the first 5 years of the lease term that will be payable monthly, subsequent to a free-rent period from October 1, 2018 to June 30, 2019. For the years ended December 31, 2018 , 2017 and 2016 , the Company recorded $4,284,000 , $2,825,000 and $1,549,000 , respectively, in provision for doubtful accounts for tenant reimbursement revenue, which are recorded as a reduction in revenue in the accompanying consolidated statements of comprehensive (loss) income . Of the $4,284,000 recorded for the year ended December 31, 2018 , $3,634,000 related to Bay Area. As of December 31, 2018 , the Company had fully reserved for and written off all its accounts receivable for tenant reimbursement revenue related to delinquent accounts. Notes Receivable Notes receivable are reported at their outstanding principal balance, net of any unearned income, unamortized deferred fees and costs and allowances for loan losses. The unamortized deferred fees and costs are amortized over the life of the notes receivable, as applicable and recorded in other interest and dividend income in the accompanying consolidated statements of comprehensive (loss) income . The Company evaluates the collectability of both interest and principal on each note receivable to determine whether it is collectible, primarily through the evaluation of credit quality indicators, such as the tenant's financial condition, collateral, evaluations of historical loss experience, current economic conditions and other relevant factors, including contractual terms of repayments. Evaluating a note receivable for potential impairment requires management to exercise judgment. The use of alternative assumptions in evaluating a note receivable could result in a different determination of the note's estimated fair value and a different conclusion regarding the existence of an impairment, the extent of such loss, if any, as well as the carrying value of the note receivable. As of December 31, 2018 and 2017 , the aggregate balance of the Company's notes receivable, including accrued interest receivable (if applicable), after allowances for loan losses was $2,700,000 and $20,138,000 , respectively, related to Bay Area. The principal balances of the Company's notes receivable are secured by their respective collateral. For the years ended December 31, 2018 , 2017 and 2016 , the Company recorded $2,782,000 , $11,936,000 , and $4,294,000 , respectively, in provision for loan losses in the accompanying consolidated financial statements. Of the $2,782,000 recorded for the year ended December 31, 2018 , $1,810,000 related to Bay Area. On August 13, 2018, the Company terminated its lease agreement with Bay Area, and on August 21, 2018, the Company accepted equipment in exchange for full settlement on a note receivable, which had an outstanding principal balance of $20,000,000 . The equipment was accounted for at fair value of $21,000,000 , less costs to sell of $100,000 , and as a result, the Company recorded income on exchange of assets of $900,000 for the year ended December 31, 2018 , which was recorded in other interest and dividend income in the accompanying consolidated statements of comprehensive (loss) income . O n October 22, 2018, the Company sold its equipment held for sale to UTMB, generating net proceeds from the sale of approximately $20,900,000 . Income Taxes The Company currently qualifies and is taxed as a REIT under Sections 856 through 860 of the Code. Accordingly, it will generally not be subject to corporate U.S. federal or state income tax to the extent that it makes qualifying distributions to stockholders, and provided it satisfies, on a continuing basis, through actual investment and operating results, the REIT requirements, including certain asset, income, distribution and stock ownership tests. If the Company fails to qualify as a REIT, and does not qualify for certain statutory relief provisions, it would be subject to U.S. federal, state and local income taxes and may be precluded from qualifying as a REIT for the subsequent four taxable years following the year in which it lost its REIT qualification, unless the Internal Revenue Service grants the Company relief under certain statutory provisions. Accordingly, failure to qualify as a REIT could have a material adverse impact on the results of operations and amounts available for distribution to stockholders. The dividends paid deduction of a REIT for qualifying dividends paid to its stockholders is computed using the Company’s taxable income as opposed to net income reported in the consolidated financial statements. Taxable income, generally, will differ from net income reported in the consolidated financial statements because the determination of taxable income is based on tax provisions and not financial accounting principles. The Company has concluded that there was no impact related to uncertain tax provisions from results of operations of the Company for the years ended December 31, 2018 , 2017 and 2016 . The United States of America is the jurisdiction for the Company, and the earliest tax year subject to examination is 2015. Concentration of Credit Risk and Significant Leases As of December 31, 2018 , the Company had cash on deposit, including restricted cash, in certain financial institutions that had deposits in excess of current federally insured levels. The Company limits its cash investments to financial institutions with high credit standings; therefore, the Company believes it is not exposed to any significant credit risk on its cash deposits. To date, the Company has experienced no loss of or lack of access to cash in its accounts. As of December 31, 2018 , the Company owned real estate investments in 32 metropolitan statistical areas, or MSAs, two of which accounted for 10.0% or more of revenue from continuing operations. Real estate investments located in the San Antonio-New Braunfels, Texas MSA and the Dallas-Fort Worth-Arlington, Texas MSA accounted for an aggregate of 11.6% and 10.4% , respectively, of revenue from continuing operations for the year ended December 31, 2018 . For the year ended December 31, 2018 , 100.0% of revenue from continuing operations was from the healthcare properties. As of December 31, 2018 , the Company had two exposures to tenant concentration that accounted for 10.0% or more of revenue from continuing operations. The leases with Post Acute Medical, LLC and 21st Century Oncology, Inc. accounted for 20.2% and 12.5% , respectively, of revenue from continuing operations for the year ended December 31, 2018 . Stockholders’ Equity As of December 31, 2018 , the Company was authorized to issue 350,000,000 shares of stock, of which 300,000,000 shares are designated as common stock at $0.01 par value per share and 50,000,000 shares are designated as preferred stock at $0.01 par value per share. As of December 31, 2018 , the Company had approximately 203,115,000 shares of common stock issued and 183,082,000 shares of common stock outstanding, and no shares of preferred stock issued and outstanding. As of December 31, 2017 , the Company had approximately 196,893,000 shares of common stock issued and 186,182,000 shares of common stock outstanding, and no shares of preferred stock issued and outstanding. The Company’s board of directors may authorize additional shares of common stock and amend their terms without obtaining stockholder approval. Share Repurchase Program The Company’s share repurchase program allows for repurchases of shares of the Company’s common stock when certain criteria are met. The share repurchase program provides that all repurchases during any calendar year, including those redeemable upon death or a qualifying disability of a stockholder, are limited to those that can be funded with equivalent reinvestments pursuant to the DRIP during the prior calendar year and other operating funds, if any, as the board of directors, in its sole discretion, may reserve for this purpose. Repurchases of shares of the Company’s common stock are at the sole discretion of the Company’s board of directors, provided, however, that the Company will limit the number of shares repurchased during any calendar year to 5.0% of the number of shares of common stock outstanding as of December 31st of the previous calendar year. In addition, the Company will further limit the amount of shares repurchased each quarter, subject to adjustments in accordance with the 5.0% annual share limitation. The Company’s board of directors, in its sole discretion, may suspend (in whole or in part) the share repurchase program at any time, and may amend, reduce, terminate or otherwise change the share repurchase program upon 30 days ' prior notice to the Company’s stockholders for any reason it deems appropriate. On April 30, 2018, the Company announced it had reached the 5.0% annual share limitation, and that it would not be able to fully accommodate all repurchase requests for the month of April 2018, and, as a result, the Company did not process any further requests for the remainder of the year ended December 31, 2018. For repurchase requests received by the Company for the April 30, 2018, shares of common stock were repurchased as follows: (i) first, pro rata as to repurchases upon the death of a stockholder; (ii) next, pro rata as to repurchases to stockholders who demonstrate, in the discretion of the board of directors, another involuntary exigent circumstance, such as bankruptcy; (iii) next, pro rata as to repurchases to stockholders subject to a mandatory distribution requirement under such stockholder’s individual retirement account; and (iv) finally, pro rata as to all other repurchase requests. See Part II, Item 5. "Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities" for more information on the Company's share repurchase program. On July 26, 2018, the Company's board of directors approved and adopted the Amended and Restated Share Repurchase Program, or the First Amended & Restated SRP, which became effective when the Company recommenced repurchasing shares of common stock in 2019. The First Amended & Restated SRP provides, among other things, that the Company will repurchase shares on a quarterly, instead of monthly, basis. See Note 21—"Subsequent Events" for share repurchases processed subsequent to December 31, 2018 . On October 24, 2018, the board of directors approved and adopted the Second Amended and Restated Share Repurchase Program, or the Second Amended & Restated SRP, in order to update the definition of "Repurchase Date" in order to clarify that the Company will either accept or reject a repurchase request by the first day of each quarter, and will process accepted repurchase requests on or about the tenth day of such quarter. Further, if a repurchase is granted, the Company or its agent will send the repurchase amount to each stockholder, estate, heir, or beneficiary on or about the tenth day of such quarter. During the year ended December 31, 2018 , the Company repurchased approximately 9,321,000 shares of common stock, or 5.00% of shares outstanding as of December 31, 2017, for an aggregate purchase price of approximately $64,289,000 (an average of $6.90 per share). During the year ended December 31, 2017 , the Company repurchased approximately 5,773,000 shares of common stock, or 3.12% of shares of common stock outstanding as of December 31, 2016, for an aggregate purchase price of approximately $57,049,000 (an average of $9.88 per share). Distribution Policy and Distributions Payable In order to maintain its status as a REIT, the Company is required to make distributions each taxable year equal to at least 90% of its REIT taxable income, computed without regard to the dividends paid deduction and excluding capital gains. To the extent funds are available, the Company intends to continue to pay regular distributions to stockholders. Distributions are paid to stockholders of record as of the applicable record dates. The Company’s distributions declared per common share was $3.49 for the year ended December 31, 2018. The Company's distributions declared per common share was $0.70 for the years ended December 31, 2017 and 2016. On January 22, 2018, the Company's board of directors declared a special cash distribution of $3.00 per share of common stock. The special cash distribution was funded with p

Dispositions

Dispositions	12 Months Ended
	Dec. 31, 2018
Real Estate [Abstract]
Dispositions	Dispositions The Company sold seven properties ( five data center properties and two healthcare properties), or the 2018 Dispositions, during the year ended December 31, 2018 , for an aggregate sale price of $245,665,000 and generated net proceeds of $241,043,000 . For the year ended December 31, 2018 , the Company recognized an aggregate gain on sale of $33,251,000 , related to five data center properties sold, as income from discontinued operations on the consolidated statements of comprehensive (loss) income . For the year ended December 31, 2018 , the Company recognized an aggregate gain on sale of $218,000 , related to the two healthcare properties sold, in gain on real estate dispositions on the consolidated statements of comprehensive (loss) income . The Company sold 16 properties ( 15 data center properties and one healthcare property), or the 2017 Dispositions, during the year ended December 31, 2017, for an aggregate sale price of $1,153,000,000 and generated net proceeds of $1,131,582,000 . The Company recognized an aggregate gain on sale of $224,133,000 , related to the data center properties sold, as income from discontinued operations on the consolidated statements of comprehensive (loss) income for the year ended December 31, 2017. For the year ended December 31, 2017, the Company recognized an impairment loss on real estate in the amount of $5,936,000 , related to one healthcare property sold, on the consolidated statements of comprehensive (loss) income for the year ended December 31, 2017. 2018 Dispositions Dispositions - Discontinued Operations Dispositions that represent a strategic shift that have a major effect on results and operations qualify as discontinued operations. The following table summarizes the 2018 Dispositions that qualify as discontinued operations. The operations related to these assets have been included in discontinued operations on the consolidated statements of comprehensive (loss) income . Property Description Disposition Date Ownership Percentage Sale Price Net Proceeds Arizona Data Center Portfolio (1) 01/10/2018 100% $ 142,500 $ 140,176 Milwaukee Data Center 06/11/2018 100% 21,000 20,397 Alpharetta Data Center II 06/15/2018 100% 64,000 62,858 Andover Data Center 07/25/2018 100% 15,000 14,633 Total $ 242,500 $ 238,064 (1) The Arizona Data Center Portfolio was sold as a two -property portfolio consisting of the Phoenix Data Center and the Scottsdale Data Center. Dispositions - Continuing Operations The following table summarizes the 2018 Dispositions that qualify as continuing operations. The operations related to these assets have been included in continuing operations on the consolidated statements of comprehensive (loss) income . Property Description Disposition Date Ownership Percentage Sale Price Net Proceeds 21st Century Oncology-Tamarac 05/25/2018 100% $ 1,575 $ 1,431 21st Century Oncology-East Naples 05/30/2018 100% 1,590 1,548 Total $ 3,165 $ 2,979 2017 Dispositions Dispositions - Discontinued Operations Dispositions that represent a strategic shift that have a major effect on results and operations qualify as discontinued operations. The following table summarizes the 2017 Dispositions that qualify as discontinued operations. The operations related to these assets have been included in discontinued operations on the consolidated statements of comprehensive (loss) income . Property Description Disposition Date Ownership Percentage Chicago Data Center (1) 12/14/2017 100 % Richardson Data Center (2) 12/20/2017 100 % 180 Peachtree Data Center (2) 12/20/2017 20.53 % (3) Northwoods Data Center (2) 12/20/2017 100 % Southfield Data Center (2) 12/20/2017 100 % Plano Data Center (2) 12/20/2017 100 % Arlington Data Center (2) 12/20/2017 100 % Philadelphia Data Center (2) 12/20/2017 100 % Raleigh Data Center (2) 12/20/2017 100 % Leonia Data Center (2) 12/20/2017 100 % AT&T Wisconsin Data Center (2) 12/20/2017 100 % AT&T Tennessee Data Center (2) 12/20/2017 100 % AT&T California Data Center (2) 12/20/2017 100 % Charlotte Data Center (2) 12/20/2017 100 % Alpharetta Data Center (2) 12/20/2017 100 % (1) The Chicago Data Center was sold for aggregate consideration of $315,000,000 . The Company generated net proceeds on the sale of the Chicago Data Center of approximately $310,396,000 . (2) The property was sold as part of a 14 -property portfolio, or the Mapletree Portfolio, for aggregate consideration of $750,000,000 . The Company generated net proceeds on the sale of the Mapletree Portfolio of approximately $733,687,000 . (3) On January 3, 2012, an indirect partially-owned subsidiary of the Operating Partnership purchased the 180 Peachtree Data Center through a consolidated partnership with three unaffiliated institutional investors. The Operating Partnership owned approximately 20.53% and the institutional investors owned an aggregate of 79.47% of the consolidated partnership’s interests. Dispositions - Continuing Operations The following table summarizes the 2017 Dispositions that qualify as continuing operations. The operations related to these assets have been included in continuing operations on the consolidated statements of comprehensive (loss) income . Property Description Disposition Date Ownership Percentage Sale Price Net Proceeds Miami International Medical Center (1) 12/28/2017 100 % $ 88,000 $ 87,499 (1) The net book value of the Miami International Medical Center at disposal was $93,435,000 , consisting of land in the amount of $8,694,000 and building and improvements in the amount of $84,741,000 . The Company recorded an impairment loss on real estate in continuing operations on the Miami International Medical Center of $5,936,000 , based on the contractual sale price (less cost of sale). The Miami International Medical Center was a part of the Company's healthcare segment.

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations Dispositions that represent a strategic shift that has a major effect on the Company's results and operations qualify as discontinued operations. All activities related to the previously reported data centers segment have been classified as discontinued operations. The assets and liabilities related to discontinued operations are separately classified on the consolidated balance sheets as of December 31, 2018 and 2017 , and the operations have been classified as income from discontinued operations on the consolidated statements of comprehensive (loss) income for the years ended December 31, 2018 , 2017 and 2016 . As of December 31, 2018 , the Company had completed the disposition of all its data center properties. The following table presents the major classes of assets and liabilities of properties classified as discontinued operations presented separately in the consolidated balance sheets as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 December 31, 2017 Assets: Real estate: Land $ — $ 21,710 Buildings and improvements, net — 168,557 Total real estate, net — 190,267 Acquired intangible assets, net — 9,617 Other assets, net 401 13,949 Assets of discontinued operations, net $ 401 $ 213,833 Liabilities: Accounts payable due to affiliates $ 12 $ 175 Accounts payable and other liabilities 1 3,847 Intangible lease liabilities, net — 1,036 Liabilities of discontinued operations, net $ 13 $ 5,058 The operations reflected in discontinued operations on the consolidated statements of comprehensive (loss) income for the years ended December 31, 2018 , 2017 and 2016 , were as follows (amounts in thousands): For the Year Ended 2018 2017 2016 Revenue: Rental and parking revenue $ 3,916 $ 102,274 $ 102,663 Tenant reimbursement revenue 162 14,009 14,300 Total revenue 4,078 116,283 116,963 Expenses: Rental and parking expenses 416 20,754 20,159 Change in fair value of contingent consideration — (2,920 ) 300 Asset management fees 322 8,106 8,549 Depreciation and amortization — 32,210 38,744 Total expenses 738 58,150 67,752 Other expense: Interest expense, net — (20,591 ) (14,532 ) Total other expense — (20,591 ) (14,532 ) Income from discontinued operations before real estate dispositions and noncontrolling interest 3,340 37,542 34,679 Gain on real estate dispositions 33,251 224,133 — Net income from discontinued operations 36,591 261,675 34,679 Net loss (income) from discontinued operations attributable to noncontrolling interests in consolidated partnerships 22 (47,326 ) (3,921 ) Net income from discontinued operations attributable to common stockholders $ 36,613 $ 214,349 $ 30,758 Capital expenditures on a cash basis for the years ended December 31, 2018 , 2017 and 2016 were $0 , $2,264,000 and $31,791,000 , respectively, related to properties classified within discontinued operations.

Acquired Intangible Assets, Net

Acquired Intangible Assets, Net	12 Months Ended
	Dec. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Acquired Intangible Assets, Net	Acquired Intangible Assets, Net Acquired intangible assets, net, consisted of the following as of December 31, 2018 and 2017 (amounts in thousands, except weighted average life amounts): December 31, 2018 December 31, 2017 In-place leases, net of accumulated amortization of $22,679 and $22,519, respectively (with a weighted average remaining life of 13.8 years and 15.1 years, respectively) $ 56,501 $ 83,139 Above-market leases, net of accumulated amortization of $1,079 and $1,068, respectively (with a weighted average remaining life of 8.5 years and 9.3 years, respectively) 2,139 2,747 Ground lease interest, net of accumulated amortization of $64 and $53, respectively (with a weighted average remaining life of 86.6 years and 87.6 years, respectively) 1,041 1,052 $ 59,681 $ 86,938 The aggregate weighted average remaining life of the acquired intangible assets was 14.8 years and 15.8 years as of December 31, 2018 and December 31, 2017 , respectively. Amortization of the acquired intangible assets for the years ended December 31, 2018 , 2017 and 2016 was $27,257,000 , $7,737,000 and $21,446,000 , respectively. Of the $27,257,000 recorded for the year ended December 31, 2018 , $21,296,000 was accelerated amortization due to the impairment of an in-place lease intangible asset related to Bay Area experiencing financial difficulties and $520,000 was accelerated amortization due to the impairment of an in-place lease intangible asset and an above-market lease intangible asset as a result of a lease termination. Amortization of the above-market leases is recorded as an adjustment to rental revenue, amortization of the in-place leases is included in depreciation and amortization and amortization of the ground lease interest is included in rental expenses in the accompanying consolidated statements of comprehensive (loss) income . Estimated amortization expense on the acquired intangible assets as of December 31, 2018 , and for each of the next five years ending December 31 and thereafter, are as follows (amounts in thousands): Year Amount 2019 $ 5,098 2020 5,098 2021 5,098 2022 5,098 2023 4,933 Thereafter 34,356 $ 59,681

Intangible Lease Liabilities, N

Intangible Lease Liabilities, Net	12 Months Ended
	Dec. 31, 2018
Intangible Lease Liabilities, Net [Abstract]
Intangible Lease Liabilities, Net	Intangible Lease Liabilities, Net Intangible lease liabilities, net, consisted of the following as of December 31, 2018 and 2017 (amounts in thousands, except weighted average life amounts): December 31, 2018 December 31, 2017 Below-market leases, net of accumulated amortization of $5,163 and $4,269, respectively (with a weighted average remaining life of 16.2 years and 17.2 years, respectively) $ 11,761 $ 12,655 Ground leasehold liabilities, net of accumulated amortization of $549 and $425, respectively (with a weighted average remaining life of 40.2 years and 41.2 years, respectively) 4,776 4,900 $ 16,537 $ 17,555 The aggregate weighted average remaining life of intangible lease liabilities was 22.9 years and 23.9 years as of December 31, 2018 and December 31, 2017 , respectively. Amortization of the intangible lease liabilities for the years ended December 31, 2018 , 2017 and 2016 , was $1,018,000 , $1,112,000 and $1,078,000 , respectively. Amortization of below-market leases is recorded as an adjustment to rental revenue and amortization of ground leasehold liabilities is included in rental expenses in the accompanying consolidated statements of comprehensive (loss) income . Estimated amortization of the intangible lease liabilities as of December 31, 2018 , and for each of the next five years ending December 31 and thereafter, are as follows (amounts in thousands): Year Amount 2019 $ 1,018 2020 1,014 2021 1,013 2022 1,013 2023 997 Thereafter 11,482 $ 16,537

Other Assets, Net

Other Assets, Net	12 Months Ended
	Dec. 31, 2018
Other Assets [Abstract]
Other Assets, Net	Other Assets, Net Other assets, net, consisted of the following as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 December 31, 2017 Deferred financing costs related to the revolver portion of the unsecured credit facility, net of accumulated amortization of $9,493 and $7,428, respectively $ 951 $ 762 Lease commissions, net of accumulated amortization of $223 and $63, respectively 6,089 1,266 Investments in unconsolidated partnerships — 965 Tenant receivables, net of allowances for doubtful accounts of $0 and $9,125, respectively 2,039 7,878 Notes receivable, net of allowances for loan losses of $0 and $10,615, respectively 2,700 20,138 Straight-line rent receivable 26,947 36,348 Restricted cash 168 10,168 Derivative assets 426 407 Prepaid and other assets 1,644 1,208 $ 40,964 $ 79,140 Amortization of deferred financing costs related to the revolver portion of the unsecured credit facility for the years ended December 31, 2018 , 2017 and 2016 was $2,065,000 , $1,595,000 and $2,143,000 , respectively, which was recognized in interest expense, net, in the accompanying consolidated statements of comprehensive (loss) income . Amortization of lease commissions for the years ended December 31, 2018 , 2017 and 2016 was $160,000 , $59,000 and $99,000 , respectively, which was recognized in depreciation and amortization in the accompanying consolidated statements of comprehensive (loss) income .

Accounts Payable and Other Liab

Accounts Payable and Other Liabilities	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
Accounts Payable and Other Liabilities	Accounts Payable and Other Liabilities Accounts payable and other liabilities, as of December 31, 2018 and 2017 , consisted of the following (amounts in thousands): December 31, 2018 December 31, 2017 Accounts payable and accrued expenses $ 2,912 $ 4,203 Accrued interest expense 890 1,558 Accrued property taxes 4,502 4,758 Distributions payable to stockholders 4,974 11,076 Tenant deposits 624 778 Deferred rental income 2,801 5,822 $ 16,703 $ 28,195

Notes Payable

Notes Payable	12 Months Ended
	Dec. 31, 2018
Notes Payable [Abstract]
Notes Payable	Notes Payable The Company had $36,289,000 and $141,477,000 principal outstanding in notes payable collateralized by real estate properties as of December 31, 2018 and 2017 , respectively. The following table summarizes the notes payable balances as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 December 31, 2017 Interest Rate (1) Maturity Date Fixed rate notes payable $ — $ 18,212 —% — Variable rate notes payable fixed through interest rate swaps 17,923 121,066 4.8% 10/11/2022 Variable rate notes payable 18,366 2,199 5.6% 01/26/2019 Total notes payable, principal amount outstanding 36,289 141,477 Unamortized deferred financing costs related to notes payable (75 ) (875 ) Total notes payable, net of deferred financing costs $ 36,214 $ 140,602 (1) Interest rates are as of December 31, 2018 . As of December 31, 2018 , the notes payable weighted average interest rate was 5.2% . Significant loan activity during the year ended December 31, 2018 , excluding scheduled principal payments, includes: • On February 28, 2018, the Company repaid its debt in connection with one of the Company's notes payable with an outstanding principal balance of $12,340,000 at the time of repayment. • On May 4, 2018, the Company repaid its outstanding mortgage note payable in the amount of approximately $84,667,000 related to the property formally known as Bay Area Regional Medical Center at the time of repayment. As a result of this extinguishment, the Company expensed $545,000 of unamortized deferred financing costs and $43,000 of termination fees and recognized a gain of $381,000 on the early extinguishment of the hedged debt obligation, which were recognized in interest expense, net, on the Company’s consolidated statements of comprehensive (loss) income . • On October 11, 2018, the Company repaid its debt in connection with one of the Company's notes payable with an outstanding principal balance of $5,717,000 at the time of repayment. The principal payments due on the notes payable as of December 31, 2018 , for each of the next four years ending December 31, are as follows (amounts in thousands): Year Amount 2019 (1) $ 18,768 2020 421 2021 444 2022 16,656 $ 36,289 (1) Of this amount, $18,366,000 relates to a loan agreement that was repaid at maturity on January 25, 2019 .

Unsecured Credit Facility

Unsecured Credit Facility	12 Months Ended
	Dec. 31, 2018
Line of Credit Facility [Abstract]
Unsecured Credit Facility	Unsecured Credit Facility As of December 31, 2018 , the maximum commitment available under the unsecured credit facility was $400,000,000 , consisting of a revolving line of credit, with a maturity date of May 28, 2019 , subject to the Operating Partnership’s right to a 12 -month extension. Subject to certain conditions, the unsecured credit facility can be increased to $750,000,000 . The unsecured credit facility bears interest at per annum rates equal to, at the Operating Partnership's option, either (a) the London Interbank Offered Rate, or LIBOR, plus an applicable margin ranging from 1.75% to 2.25% , which is determined by the overall leverage of the Operating Partnership; or (b) a base rate, which means, for any day, a fluctuating rate per annum equal to the prime rate for such day, plus an applicable margin ranging from 0.75% to 1.25% , which is determined based on the overall leverage of the Operating Partnership. Additionally, the requirement to pay a fee on the unused portion of the lenders’ commitments under the unsecured credit facility is 0.25% per annum if the average daily amount outstanding under the unsecured credit facility is less than 50% of the lenders’ commitments, and 0.15% per annum if the average daily amount outstanding under the unsecured credit facility is greater than or equal to 50% of the lenders’ commitments. The unused fee is payable quarterly in arrears. The actual amount of credit available under the unsecured credit facility is a function of certain loan-to-cost, loan-to-value, debt yield and debt service coverage ratios contained in the unsecured credit facility agreements. The unencumbered pool availability under the unsecured credit facility is equal to the maximum principal amount of the value of the assets that are included in the unencumbered pool. The unsecured credit facility agreement contains various affirmative and negative covenants that are customary for credit facilities and transactions of this type, including limitations on the incurrence of debt and limitations on distributions by the Company, the Operating Partnership and its subsidiaries in the event of default. The unsecured credit facility agreement imposes the following financial covenants: (i) maximum ratio of consolidated total indebtedness to gross asset value; (ii) minimum ratio of adjusted consolidated earnings before interest, taxes, depreciation and amortization to consolidated fixed charges; (iii) minimum tangible net worth; (iv) minimum weighted average remaining lease term of unencumbered pool properties in the unencumbered pool; (v) minimum number of unencumbered pool properties in the unencumbered pool; and (vi) minimum unencumbered pool actual debt service coverage ratio. In addition, the unsecured credit facility agreement includes events of default that are customary for credit facilities and transactions of this type. The Company was in compliance with all financial covenant requirements at December 31, 2018 . The credit available to the Operating Partnership under the unsecured credit facility will be a maximum principal amount of the value of the assets that are included in the unencumbered pool. The following table summarizes the unsecured credit facility balances as of December 31, 2018 (amounts in thousands): December 31, 2018 Interest Rate (1) Variable rate revolving line of credit fixed through interest rate swaps $ 38,000 3.1% Variable rate revolving line of credit 152,000 4.1% Total unsecured credit facility $ 190,000 (1) Interest rates are as of December 31, 2018. As of December 31, 2017, the Company did no t have an outstanding balance under the unsecured credit facility. Significant credit facility activities during the year ended December 31, 2018 include: • On February 1, 2018, the Operating Partnership and certain of the Company's subsidiaries entered into an amended and restated credit agreement related to the unsecured credit facility to remove one lender and to change the maximum commitment available under the unsecured credit facility to $400,000,000 , consisting of a revolving line of credit, with a maturity date of May 28, 2019 , subject to the Operating Partnership's right to a 12 -month extension, which the Company intends to exercise. Subject to certain conditions, the unsecured credit facility can be increased to $750,000,000 . All other material terms of the unsecured credit facility remained unchanged. • During the year ended December 31, 2018 , in connection with the special distribution in the amount of $556,227,000 paid to stockholders on March 16, 2018, the Company made a draw of $195,000,000 on its unsecured credit facility. • During the year ended December 31, 2018 , the Company drew $90,000,000 to repay its debt related to the property formally known as Bay Area Regional Medical Center at the time of repayment and to fund working capital needs. The Company repaid $95,000,000 on its unsecured credit facility with net proceeds from the 2018 Dispositions. • On August 13, 2018, the Operating Partnership and certain of the Company's subsidiaries entered into the First Amendment to the Third Amended and Restated Credit Agreement with KeyBank National Association, or KeyBank, and certain other lenders to amend certain financial covenants as a result of Bay Area experiencing financial difficulties. The Company is in compliance with the covenants of the First Amendment to the Third Amended and Restated Credit Agreement as of December 31, 2018.

Related-Party Transactions and

Related-Party Transactions and Arrangements	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related-Party Transactions and Arrangements	Related-Party Transactions and Arrangements The Company has no direct employees. Substantially all of the Company's business is managed by the Advisor. The employees of the Advisor and other affiliates provide services to the Company related to property management, asset management, accounting, investor relations, and all other administrative services. Asset Management Fees The Company pays the Advisor an annual asset management fee of 0.85% of the aggregate asset value, plus costs and expenses incurred by the Advisor in providing asset management services. The fee is payable monthly in an amount equal to 0.07083% of the aggregate asset value as of the last day of the immediately preceding month. Operating Expenses The Company reimburses the Advisor for all expenses it paid or incurred in connection with the services provided to the Company, subject to certain limitations. The Company will not reimburse the Advisor for personnel costs in connection with services for which the Advisor receives an acquisition fee or a disposition fee. Operating expenses incurred on the Company's behalf are recorded in general and administrative expenses in the accompanying consolidated statements of comprehensive (loss) income . Property Management Fees The Company pays Carter Validus Real Estate Management Services, LLC, or the Property Manager, leasing and property management fees for the Company’s properties. Such fees equal 3.0% of monthly gross revenues from single-tenant properties and 4.0% of monthly gross revenues from multi-tenant properties. The Company reimburses the Property Manager and its affiliates for property-level expenses that any of them pay or incur on the Company’s behalf, including certain salaries, bonuses and benefits of persons employed by the Property Manager and its affiliates, except for the salaries, bonuses and benefits of persons who also serve as one of the Company’s executive officers. The Property Manager and its affiliates may subcontract the performance of their duties to third parties and pay all or a portion of the property management fee to the third parties with whom they contract for these services. If the Company contracts directly with third parties for such services at customary market fees, the Company may pay the Property Manager an oversight fee equal to 1.0% of the gross revenues of the property managed. In no event will the Company pay the Property Manager, the Advisor or its affiliates both a property management fee and an oversight fee with respect to any particular property. Property management fees are recorded in rental expenses in the accompanying consolidated statements of comprehensive (loss) income . Leasing Commission Fees The Company pays the Property Manager a separate fee for the one-time initial rent-up, lease renewals or leasing-up of newly constructed properties. Leasing commissions are capitalized in other assets, net, in the accompanying consolidated balance sheets and amortized over the term of the related lease Construction Management Fees For acting as general contractor and/or construction manager to supervise or coordinate projects or to provide major repairs or rehabilitation on our properties, the Company may pay the Property Manager up to 5.0% of the cost of the projects, repairs and/or rehabilitation, as applicable, or construction management fees. Construction management fees included in continuing operations are capitalized in buildings and improvements in the accompanying consolidated balance sheets . Disposition Fees If the Advisor or its affiliates provides a substantial amount of services, as determined by a majority of the Company’s independent directors, in connection with the sale of one or more assets, a merger with a change of control of the Company or a sale of the Company, the Company will pay the Advisor a disposition fee equal to an amount of up to the lesser of 0.5% of the transaction price and one-half of the fees paid in the aggregate to third party investment bankers for such transaction. In no event will the combined real estate commission paid to the Advisor, its affiliates and unaffiliated third parties exceed 6.0% of the contract sales price. Disposition fees are recorded in gain on real estate dispositions in the accompanying consolidated statements of comprehensive (loss) income . Subordinated Participation in Net Sale Proceeds After investors have received a return of their net capital contributions and an 8.0% cumulative non-compounded annual return, then the Advisor is entitled to receive 15.0% of the remaining net sale proceeds, or a subordinated participation in net sale proceeds. As of December 31, 2018 , the Company had no t incurred a subordinated participation in net sale proceeds to the Advisor or its affiliates. Subordinated Incentive Listing Fee Upon the listing of the Company’s common stock on a national securities exchange, the Company would pay the Advisor a subordinated incentive listing fee equal to 15.0% of the amount by which the market value of the Company’s outstanding stock plus all distributions paid by the Company prior to listing exceeds the sum of the total amount of capital raised from investors and the amount of cash flow necessary to generate an 8.0% cumulative, non-compounded annual return to investors, or a subordinated incentive listing fee. As of December 31, 2018 , the Company had no t incurred a subordinated incentive listing fee to the Advisor or its affiliates. Subordinated Distribution Upon Termination Fee Upon termination or non-renewal of the advisory agreement, with or without cause, the Advisor will be entitled to receive distributions from the Operating Partnership equal to 15.0% of the amount by which the sum of the Company’s adjusted market value plus distributions exceeds the sum of the aggregate capital contributed by investors plus an amount equal to an annual 8.0% cumulative, non-compounded return to investors. In addition, the Advisor may elect to defer its right to receive a subordinated distribution upon termination until either shares of the Company’s common stock are listed and traded on a national securities exchange or another liquidity event occurs. As of December 31, 2018 , the Company had no t incurred any subordinated distribution upon termination fees to the Advisor or its affiliates. The following table details amounts incurred for the years ended December 31, 2018 , 2017 and 2016 in connection with the Company's operations-related services described above (amounts in thousands): Incurred For the Year Ended Fee Entity 2018 2017 2016 Asset management fees (1) Carter/Validus Advisors, LLC and its affiliates $ 10,131 $ 18,717 $ 19,505 Operating expense reimbursement Carter/Validus Advisors, LLC and its affiliates 1,728 1,598 1,793 Disposition fees (2) Carter/Validus Advisors, LLC and its affiliates 1,228 4,311 — Property management fees (3) Carter Validus Real Estate Management Services, LLC 1,831 5,056 5,425 Leasing commission fees (4) Carter Validus Real Estate Management Services, LLC 3,435 644 1,138 Construction management fees (5) Carter Validus Real Estate Management Services, LLC 137 524 986 Total $ 18,490 $ 30,850 $ 28,847 (1) Of the amounts incurred, $9,809,000 , $10,611,000 and $10,956,000 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. (2) Of the amounts incurred, $16,000 , $440,000 and $0 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. (3) Of the amounts incurred, $1,728,000 , $2,542,000 and $2,945,000 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. (4) Of the amounts incurred, $3,435,000 , $640,000 and $277,000 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. (5) Of the amounts incurred, $137,000 , $524,000 and $661,000 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. The following table details amounts payable to affiliates as of December 31, 2018 and 2017 in connection with the Company's operations-related services described above (amounts in thousands): Payable As of December 31, Fee Entity 2018 2017 Asset management fees Carter/Validus Advisors, LLC and its affiliates $ 801 $ 980 Operating expense reimbursement Carter/Validus Advisors, LLC and its affiliates 281 98 Disposition fees Carter/Validus Advisors, LLC and its affiliates — 440 Property management fees Carter Validus Real Estate Management Services, LLC 181 473 Leasing commission fees Carter Validus Real Estate Management Services, LLC 60 364 Construction management fees Carter Validus Real Estate Management Services, LLC 6 17 Total (1) $ 1,329 $ 2,372 (1) In addition, the Company had $12,000 and $175,000 due to affiliates included in liabilities of discontinued operations on the consolidated balance sheet as of December 31, 2018 and December 31, 2017 , respectively.

Future Minimum Rent

Future Minimum Rent	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Future Minimum Rent	Future Minimum Rent Rental Income The Company’s real estate properties are leased to tenants under operating leases with varying terms. The lease agreements frequently have provisions to extend the lease agreements. The Company retains substantially all of the risks and benefits of ownership of the real estate properties leased to tenants. The future minimum rent to be received from the Company’s investments in real estate properties under non-cancelable operating leases as of December 31, 2018 , for each of the next five years ending December 31 and thereafter, are as follows (amounts in thousands): Year Amount 2019 $ 70,133 2020 77,681 2021 80,555 2022 83,267 2023 84,799 Thereafter 705,975 $ 1,102,410 Rental Expense The Company has four ground lease obligations that generally require fixed annual rental payments and may also include escalation clauses and renewal options. The ground lease payments associated with one of the ground leases are paid directly by the tenant, therefore, the future minimum rent obligations are excluded from the table below. The future minimum rent obligations under non-cancelable ground leases as of December 31, 2018 , for each of the next five years ended December 31 and thereafter, are as follows (amounts in thousands): Year Amount 2019 $ 698 2020 698 2021 698 2022 698 2023 701 Thereafter 33,550 $ 37,043

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Notes payable – Fixed Rate —The estimated fair value of notes payable – fixed rate measured using observable inputs from similar liabilities (Level 2) was approximately $0 and $18,189,000 as of December 31, 2018 and December 31, 2017 , respectively, as compared to the outstanding principal of $0 and $18,212,000 as of December 31, 2018 and December 31, 2017 , respectively. The estimated fair value of notes payable – variable rate fixed through interest rate swap agreements (Level 2) was approximately $17,465,000 and $120,051,000 as of December 31, 2018 and December 31, 2017 , respectively, as compared to the outstanding principal of $17,923,000 and $121,066,000 as of December 31, 2018 and December 31, 2017 , respectively. Notes payable – Variable —The outstanding principal of the notes payable – variable was $18,366,000 and $2,199,000 as of December 31, 2018 and December 31, 2017 , respectively, which approximated its fair value. The fair value of the Company's variable rate notes payable is estimated based on the interest rates currently offered to the Company by financial institutions. Unsecured credit facility —The outstanding principal balance of the unsecured credit facility – variable was $152,000,000 and $0 , which approximated its fair value, as of December 31, 2018 and December 31, 2017 , respectively. The fair value of the Company's variable rate unsecured credit facility is estimated based on the interest rates currently offered to the Company by financial institutions. The estimated fair value of the unsecured credit facility – variable rate fixed through interest rate swap agreements (Level 2) was approximately $37,794,000 and $0 as of December 31, 2018 and December 31, 2017 , respectively, as compared to the outstanding principal of $38,000,000 and $0 as of December 31, 2018 and December 31, 2017 , respectively. Notes receivable —The outstanding principal balance of the notes receivable in the amount of $2,700,000 and $20,138,000 approximated the fair value as of December 31, 2018 and 2017, respectively. The fair value was measured using significant other observable inputs (Level 2), which requires certain judgments to be made by management. Derivative instruments — Considerable judgment is necessary to develop estimated fair values of financial instruments. Accordingly, the estimates presented herein are not necessarily indicative of the amount the Company could realize, or be liable for, on disposition of the financial instruments. The Company determined that the majority of the inputs used to value its interest rate swaps fall within Level 2 of the fair value hierarchy. The credit valuation adjustments associated with these instruments utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by the Company and the respective counterparty. However, as of December 31, 2018 , the Company assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions, and determined that the credit valuation adjustments are not significant to the overall valuation of its interest rate swaps. As a result, the Company determined that its interest rate swaps valuation in its entirety is classified in Level 2 of the fair value hierarchy. See Note 14—"Derivative Instruments and Hedging Activities" for a further discussion of the Company’s derivative instruments. The following tables show the fair value of the Company’s financial assets that are required to be measured at fair value on a recurring basis as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 Fair Value Hierarchy Quoted Prices in Active Significant Other Significant Total Fair Assets: Derivative assets $ — $ 426 $ — $ 426 Total assets at fair value $ — $ 426 $ — $ 426 December 31, 2017 Fair Value Hierarchy Quoted Prices in Active Significant Other Significant Total Fair Assets: Derivative assets $ — $ 407 $ — $ 407 Total assets at fair value $ — $ 407 $ — $ 407 Real estate assets — As discussed in Note 2—"Summary of Significant Accounting Policies" , during the year ended December 31, 2018 , real estate assets related to two healthcare properties with an aggregate carrying amount of $49,103,000 were determined to be impaired, using Level 2 inputs of the fair value hierarchy. The carrying value of the properties were reduced to their estimated fair value of $42,515,000 . During the year ended December 31, 2017 , real estate assets related to four properties with an aggregate carrying amount of $85,768,000 were determined to be impaired using Level 3 inputs of the fair value hierarchy. The Company used a discounted cash flow analysis and market valuation approach, which required significant judgments to be made by management. The carrying value of the properties were reduced to their estimated fair value of $52,557,000 . The following tables show the fair value of the Company's real estate assets measured at fair value on a non-recurring basis as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 Fair Value Hierarchy Quoted Prices in Active Significant Other Significant Re-Measured Balance Total Losses Real estate assets (1) $ — $ 42,515 $ — $ 42,515 $ (6,588 ) December 31, 2017 Fair Value Hierarchy Quoted Prices in Active Significant Other Significant Re-Measured Balance Total Losses Real estate assets (2) $ — $ — $ 52,557 (3) $ 52,557 $ (33,211 ) (1) Amount represents the fair value of two real estate properties impacted by impairment charges during the year ended December 31, 2018 . The properties are classified as continuing operations as of December 31, 2018 . During the year ended December 31, 2018, the Company transferred $49,778,000 of real estate assets from Level 3 to Level 2. Transfers between these two hierarchy levels were based on the availability of sufficient observable inputs to meet Level 2 versus Level 3 criteria. Transfers between levels are reported at the beginning of the reporting period. (2) Amount represents the aggregate fair value of four real estate properties impacted by impairment charges as of December 31, 2017. (3) The fair values relating to impairment assessments were based on a discounted cash flow model and a market approach model to value real properties, using comparable properties adjusted for differences in characteristics to estimate the fair value. Projected cash flows are comprised of projected rental revenues and expenses based upon market conditions and expectations for growth. Terminal capitalization rates, discount rates, market rate per square foot and annual growth rates utilized in these models are based on a reasonable range of current market rates for each property analyzed. Based upon these inputs, the Company determined that its valuations of properties using a discounted cash flow model and a market approach model are classified within Level 3 of the fair value hierarchy. The following table sets forth quantitative information about the unobservable inputs of the Company’s Level 3 real estate recorded as of December 31, 2017 : Unobservable Inputs December 31, 2017 Terminal capitalization rate 8.5% Discount rate 8.7% (1) The comparable sale price per square foot is used under the market approach.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish these objectives, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable rate amounts from a counterparty in exchange for the Company making fixed rate payments over the life of the agreements without exchange of the underlying notional amount. The effective portion of changes in the fair value of derivatives designated, and that qualify, as cash flow hedges is recorded in accumulated other comprehensive income (loss) in the accompanying consolidated statements of stockholders' equity and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During the year ended December 31, 2018 , such derivatives were used to hedge the variable cash flows associated with variable rate debt. The ineffective portion of changes in fair value of the derivatives is recognized directly in earnings. During the year ended December 31, 2018 , the Company recognized a gain of $1,000 due to ineffectiveness of its hedges of interest rate risk, which was recorded in interest expense, net, in the accompanying consolidated statements of comprehensive (loss) income . During the years ended December 31, 2017 and 2016 , no gains or losses were recognized due to the ineffectiveness of hedges of interest rate risk. During the year ended December 31, 2018 , the Company accelerated the reclassification of amounts in other comprehensive income to earnings as a result of a hedged forecasted transaction becoming probable not to occur related to early debt extinguishment at the property formerly known as Bay Area Regional Medical Center. The accelerated amount was a gain of $381,000 and was recorded in interest expense, net in the accompanying consolidated statements of comprehensive (loss) income . During the year ended December 31, 2017 , the Company accelerated the reclassification of amounts in other comprehensive income to earnings as a result of hedged forecasted transactions becoming probable not to occur due to debt extinguishment related to the disposition of properties. The accelerated amount was a gain of $4,637,000 , of which $3,755,000 was recorded in interest expense, net, and $882,000 was recorded in income from discontinued operations in the accompanying consolidated statements of comprehensive (loss) income . During the year ended December 31, 2016 , the Company accelerated the reclassification of amounts in other comprehensive loss to earnings as a result of a hedged forecasted transaction becoming probable not to occur due to a related debt extinguishment. The accelerated amount was a loss of $728,000 , which was recorded in interest expense, net, in the accompanying consolidated statements of comprehensive (loss) income . Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s variable rate debt. During the next twelve months, the Company estimates that an additional $274,000 will be reclassified from accumulated other comprehensive income as a decrease to interest expense. See Note 13—"Fair Value" for a further discussion of the fair value of the Company’s derivative instruments. The following table summarizes the notional amount and fair value of the Company’s derivative instruments (amounts in thousands): Derivatives Balance Effective Maturity December 31, 2018 December 31, 2017 Outstanding Fair Value of Outstanding Fair Value of Asset Asset Interest rate swaps Other assets, net 08/03/2015 to 05/28/2019 to $ 55,923 $ 426 $ 121,066 $ 407 The notional amount under the agreements is an indication of the extent of the Company’s involvement in each instrument at the time, but does not represent exposure to credit, interest rate or market risks. Accounting for changes in the fair value of a derivative instrument depends on the intended use and designation of the derivative instrument. The Company designated the interest rate swaps as cash flow hedges to hedge the variability of the anticipated cash flows on its variable rate notes payable. The change in fair value of the effective portion of the derivative instrument that is designated as a hedge is recorded in other comprehensive income, or OCI, in the accompanying consolidated statements of comprehensive (loss) income . The table below summarizes the amount of income and loss recognized on interest rate derivatives designated as cash flow hedges for the years ended December 31, 2018 , 2017 and 2016 (amounts in thousands): Derivatives in Cash Flow Hedging Relationships Amount of Income (Loss) Recognized Location of Loss (Income) Amount of Income (Loss) For the Year Ended December 31, 2018 Interest rate swaps - continuing operations $ 617 Interest expense, net $ 599 Total $ 617 $ 599 For the Year Ended December 31, 2017 Interest rate swaps - continuing operations $ 1,310 Interest expense, net $ 3,353 Interest rate swaps - discontinued operations 752 Income from discontinued operations 125 Total $ 2,062 $ 3,478 For the Year Ended December 31, 2016 Interest rate swaps - continuing operations $ 1,045 Interest expense, net $ (2,764 ) Interest rate swaps - discontinued operations (1,562 ) Income from discontinued operations (2,156 ) Total $ (517 ) $ (4,920 ) Credit Risk-Related Contingent Features The Company has agreements with each of its derivative counterparties that contain cross-default provisions, whereby if the Company defaults on certain of its unsecured indebtedness, then the Company could also be declared in default on its derivative obligations, resulting in an acceleration of payment thereunder. In addition, the Company has agreements with each of its derivative counterparties that contain a provision where if the Company either defaults or is capable of being declared in default on any of its indebtedness, then the Company could also be declared in default on its derivative obligations. The Company records credit risk valuation adjustments on its interest rate swaps based on the respective credit quality of the Company and the counterparty. The Company believes it mitigates its risk by entering into agreements with creditworthy counterparties. As of December 31, 2018 , there were no derivatives in a net liability position. Tabular Disclosure Offsetting Derivatives The Company has elected not to offset derivative positions in its consolidated financial statements. The following table presents the effect on the Company’s financial position had the Company made the election to offset its derivative positions as of December 31, 2018 and 2017 (amounts in thousands): Offsetting of Derivative Assets Gross Amounts Not Offset Gross Gross Amounts Net Amounts of Financial Cash Net December 31, 2018 $ 426 $ — $ 426 $ — $ — $ 426 December 31, 2017 $ 407 $ — $ 407 $ — $ — $ 407 The Company reports derivative assets attributable to continuing operations as other assets, net, on the consolidated balance sheets .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The following table presents a rollforward of amounts recognized in accumulated other comprehensive income (loss), net of noncontrolling interests, by component for the years ended December 31, 2018 , 2017 and 2016 (amounts in thousands): Unrealized Income (Loss) on Derivative Accumulated Other Balance as of December 31, 2015 $ (2,100 ) $ (2,580 ) Other comprehensive loss before reclassification (517 ) (517 ) Amount of loss reclassified from accumulated other comprehensive loss to net income (effective portion and missed forecast) 4,920 4,920 Other comprehensive income 4,403 4,403 Balance as of December 31, 2016 2,303 1,823 Other comprehensive income before reclassification 2,062 2,062 Amount of income reclassified from accumulated other comprehensive income to net income (effective portion and missed forecast) (3,478 ) (3,478 ) Other comprehensive loss (1,416 ) (1,416 ) Balance as of December 31, 2017 887 407 Other comprehensive income before reclassification 617 617 Amount of income reclassified from accumulated other comprehensive income to net loss (effective portion and missed forecast) (599 ) (599 ) Other comprehensive income 18 18 Balance as of December 31, 2018 $ 905 $ 425 The following table presents reclassifications out of accumulated other comprehensive income (loss) for the years ended December 31, 2018 , 2017 and 2016 (amounts in thousands): Details about Accumulated Other Amounts Reclassified from Affected Line Items in the Consolidated Statements of Comprehensive Income For the Year Ended 2018 2017 2016 Interest rate swap contracts - continuing operations $ (599 ) $ (3,353 ) $ 2,764 Interest expense, net Interest rate swap contracts - discontinued operations — (125 ) 2,156 Income from discontinued operations Interest rate swap contracts $ (599 ) $ (3,478 ) $ 4,920

Stock-based Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation	Stock-based Compensation The Company, pursuant to the 2010 Restricted Share Plan, or the 2010 Plan, has the authority to grant restricted and deferred stock awards to persons eligible under the 2010 Plan. The Company authorized and reserved 300,000 shares of its common stock for issuance under the 2010 Plan, subject to certain adjustments. Subject to certain limited exceptions, restricted stock may not be sold, assigned, transferred, pledged, hypothecated or otherwise disposed of and is subject to forfeiture within the vesting period. Restricted stock awards generally vest ratably over four years . The Company uses the straight-line method to recognize expenses for service awards with graded vesting. Restricted stock awards are entitled to receive dividends during the vesting period. In addition to the ratable amortization of fair value over the vesting period, dividends paid on unvested shares of restricted stock, which are not expected to vest, are charged to compensation expense in the period paid. On July 20, 2018, the Company awarded an aggregate of 9,000 shares of restricted stock to its independent board members in connection with their re-election to the board of directors of the Company. The fair value of each share of restricted common stock was estimated at the date of grant at $6.26 per share. The restricted stock awards vest over a period of four years . The awards are amortized using the straight-line method over four years. As of December 31, 2018 and 2017 , there was $151,000 and $180,000 , respectively, of total unrecognized compensation expense related to nonvested shares of our restricted common stock. This expense is expected to be recognized over a remaining weighted average period of 2.05 years . This expected expense does not include the impact of any future stock-based compensation awards. As of December 31, 2018 and 2017 , the fair value of the nonvested shares of restricted common stock was $119,925 and $208,350 , respectively. A summary of the status of the nonvested shares of restricted common stock as of December 31, 2017 and the changes for the year ended December 31, 2018 is presented below: Restricted Stock Shares Nonvested at December 31, 2017 22,500 Vested (9,000 ) Granted 9,000 Nonvested at December 31, 2018 22,500 Stock-based compensation expense for the years ended December 31, 2018 , 2017 and 2016 was $86,000 , $88,000 and $90,000 , respectively, which is reported in general and administrative costs in the accompanying consolidated statements of comprehensive (loss) income .

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes As a REIT, the Company generally will not be subject to U.S. federal income tax on taxable income that it distributes to the stockholders. For U.S. federal income tax purposes, distributions to stockholders are characterized as either ordinary dividends, capital gain distributions, or nontaxable distributions. Nontaxable distributions will reduce U.S. stockholders’ respective bases in their shares. The following table shows the character of distributions the Company paid on a percentage basis during the years ended December 31, 2018 , 2017 and 2016 : For the Year Ended December 31, Character of Distributions: 2018 2017 2016 Ordinary dividends 2.85 % — % 45.45 % Capital gain distributions 5.07 % 100.00 % 3.20 % Nontaxable distributions 92.08 % — % 51.35 % Total 100.00 % 100.00 % 100.00 % As a REIT, if the Company fails to distribute in any calendar year (subject to specific timing rules for certain dividends paid in January) at least the sum of (i) 85% of its ordinary income for such year, (ii) 95% of its capital gain net income for such year, and (iii) any undistributed taxable income from the prior year, the Company would be subject to a non-deductible 4% excise tax on the excess of such required distribution over the amounts actually distributed. The Company is subject to certain state and local income taxes on its income, property or net worth in some jurisdictions. Texas, Louisiana and Massachusetts are the major state and local tax jurisdictions for the Company. The Company applies the rules under ASC 740-10, Accounting for Uncertainty in Income Taxes , for uncertain tax positions using a “more likely than not” recognition threshold for tax positions. Pursuant to these rules, the financial statement effects of a tax position are initially recognized when it is more likely than not, based on the technical merits of the tax position, that such a position will be sustained upon examination by the relevant tax authorities. If the tax benefit meets the “more likely than not” threshold, the measurement of the tax benefit will be based on the Company's estimate of the ultimate tax benefit to be sustained if audited by the taxing authority. The Company concluded there was no impact related to uncertain tax positions from the results of the operations of the Company for the years ended December 31, 2018 , 2017 and 2016 . The earliest tax year subject to examination is 2015. The Company’s policy is to recognize accrued interest related to unrecognized tax benefits as a component of interest expense and penalties related to unrecognized tax benefits as a component of general and administrative expenses. From inception through December 31, 2018 , the Company has not recognized any interest expense or penalties related to unrecognized tax benefits.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation In the ordinary course of business, the Company may become subject to litigation or claims. As of December 31, 2018 , there were, and currently there are, no material pending legal proceedings to which the Company is a party. W hile the resolution of a lawsuit or proceeding may have an impact to the Company's financial results for the period in which it is resolved, the Company believes that the final disposition of the lawsuits or proceedings in which we are currently involved, either individually or in the aggregate, will not have a material adverse effect on its financial position, results of operations or liquidity.

Economic Dependency

Economic Dependency	12 Months Ended
	Dec. 31, 2018
Economic Dependency [Abstract]
Economic Dependency	Economic Dependency The Company is dependent on the Advisor and its affiliates for certain services that are essential to the Company, including the identification, evaluation, negotiation, purchase and disposition of real estate investments and other investments; the management of the daily operations of the Company’s real estate portfolio; and other general and administrative responsibilities. In the event that the Advisor or its affiliates are unable to provide the respective services, the Company will be required to obtain such services from other sources.

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (Unaudited)	Selected Quarterly Financial Data (Unaudited) Presented in the following table is a summary of the unaudited quarterly financial information for the years ended December 31, 2018 and 2017 . The Company believes that all necessary adjustments, consisting only of normal recurring adjustments, have been included in the amounts stated below to present fairly, and in accordance with GAAP, the selected quarterly information (amounts in thousands, except share data and per share amounts): 2018 Fourth Third Second First Total revenue $ 20,149 $ 17,496 $ 17,182 $ 1,535 Total expenses (14,327 ) (13,865 ) (13,952 ) (35,895 ) Income (loss) from operations 5,822 3,631 3,230 (34,360 ) Other expense (3,760 ) (2,145 ) (9,586 ) (3,404 ) Income (loss) from continuing operations 2,062 1,486 (6,356 ) (37,764 ) (Loss) income from discontinued operations (9 ) 4,117 11,950 20,533 Net income (loss) 2,053 5,603 5,594 (17,231 ) Less: Net loss (income) attributable to noncontrolling interests in consolidated partnerships 7 (33 ) 48 — Net income (loss) attributable to common stockholders $ 2,060 $ 5,570 $ 5,642 $ (17,231 ) Net income (loss) per common share attributable to common stockholders: Basic: Continuing operations $ 0.01 $ 0.01 $ (0.04 ) $ (0.20 ) Discontinued operations — 0.02 0.07 0.11 Net income (loss) attributable to common stockholders $ 0.01 $ 0.03 $ 0.03 $ (0.09 ) Diluted: Continuing operations $ 0.01 $ 0.01 $ (0.04 ) $ (0.20 ) Discontinued operations — 0.02 0.07 0.11 Net income (loss) attributable to common stockholders $ 0.01 $ 0.03 $ 0.03 $ (0.09 ) Weighted average number of common shares outstanding: Basic 182,656,235 181,260,431 181,128,292 185,673,400 Diluted 182,678,735 181,282,589 181,128,292 185,673,400 2017 Fourth Third Second First Total revenue $ 22,984 $ 23,857 $ 25,877 $ 21,696 Total expenses (19,237 ) (15,263 ) (15,058 ) (14,849 ) Income from operations 3,747 8,594 10,819 6,847 Other expense (41,210 ) (12,286 ) (6,497 ) (7,052 ) (Loss) income from continuing operations (37,463 ) (3,692 ) 4,322 (205 ) Income from discontinued operations 231,964 10,636 8,886 10,189 Net income 194,501 6,944 13,208 9,984 Less: Net income attributable to noncontrolling interests in consolidated partnerships (44,308 ) (898 ) (1,039 ) (1,081 ) Net income attributable to common stockholders $ 150,193 $ 6,046 $ 12,169 $ 8,903 Net income per common share attributable to common stockholders: Basic: Continuing operations $ (0.21 ) $ (0.02 ) $ 0.03 $ — Discontinued operations 1.01 0.05 0.04 0.05 Net income attributable to common stockholders $ 0.80 $ 0.03 $ 0.07 $ 0.05 Diluted: Continuing operations $ (0.21 ) $ (0.02 ) $ 0.03 $ — Discontinued operations 1.01 0.05 0.04 0.05 Net income attributable to common stockholders $ 0.80 $ 0.03 $ 0.07 $ 0.05 Weighted average number of common shares outstanding: Basic 186,182,196 186,295,970 185,897,525 185,300,384 Diluted 186,182,196 186,295,970 185,911,968 185,300,384

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Distributions Paid On January 2, 2019 , the Company paid aggregate distributions of $4,974,000 ( $2,691,000 in cash and $2,283,000 in shares of the Company’s common stock issued pursuant to the Third DRIP Offering), which related to distributions declared for each day in the period from December 1, 2018 through December 31, 2018. On February 1, 2019, the Company paid aggregate distributions of $4,921,000 ( $2,663,000 in cash and $2,258,000 in shares of the Company’s common stock issued pursuant to the Third DRIP Offering), which related to distributions declared for each day in the period from January 1, 2019 through January 31, 2019. On March 1, 2019, the Company paid aggregate distributions of $4,425,000 ( $2,397,000 in cash and $2,028,000 in shares of the Company’s common stock issued pursuant to the Third DRIP Offering), which related to distributions declared for each day in the period from February 1, 2019 through February 28, 2019. Distributions Authorized On January 25, 2019, the board of directors of the Company approved and declared a distribution to the Company’s stockholders of record as of the close of business on each day of the period commencing on February 1, 2019 and ending on February 28, 2019. The distributions were calculated based on 365 days in the calendar year and equal to $0.000876712 per share of common stock, which will be equal to an annualized distribution rate of 6.0% , based on the estimated per share NAV of $5.33 . The distributions declared for the record date in February 2019 were paid in March 2019. The distributions will be payable to stockholders from legally available funds therefor. On February 26, 2019, the board of directors of the Company approved and declared a distribution to the Company’s stockholders of record as of the close of business on each day of the period commencing on March 1, 2019 and ending on March 31, 2019. The distributions will be calculated based on 365 days in the calendar year and will be equal to $0.000876712 per share of common stock, which will be equal to an annualized distribution rate of 6.0% , based on the estimated per share NAV of $5.33 . The distributions declared for the record date in March 2019 will be paid in April 2019. The distributions will be payable to stockholders from legally available funds therefor. On March 15, 2019, the board of directors of the Company approved and declared a distribution to the Company’s stockholders of record as of the close of business on each day of the period commencing on April 1, 2019 and ending on April 30, 2019. The distributions will be calculated based on 365 days in the calendar year and will be equal to $0.000876712 per share of common stock, which will be equal to an annualized distribution rate of 6.0% , based on the estimated per share NAV of $5.33 . The distributions declared for the record date in April 2019 will be paid in May 2019. The distributions will be payable to stockholders from legally available funds therefor. Share Repurchase Program The Company determined that it reached the quarterly share limitation under the Second Amended & Restated Share Repurchase Program for the first quarter repurchase period of 2019, and that it was not able to fully process all repurchase requests for such quarter. Therefore, for properly submitted repurchase requests that the Company received by December 24, 2018, shares of common stock were repurchased in accordance with the Second Amended & Restated SRP as follows: (i) first, pro rata as to repurchases upon the death of a stockholder; (ii) next, pro rata as to repurchases to stockholders who demonstrated, in the discretion of the board of directors, another involuntary exigent circumstance, such as bankruptcy; (iii) next, pro rata as to repurchases to stockholders subject to a mandatory distribution requirement under such stockholder’s IRA; and (iv) finally, pro rata as to all other repurchase requests. Repurchases of shares received by the Company during the prorated period within categories (i) and (ii) above were repurchased in full. There were no repurchases of shares received by the Company within category (iii) above. Repurchase of shares received by the Company within category (iv) above were repurchased based on a proration of approximately 49.5% of the shares of common stock made in the requests.

SCHEDULE III - REAL ESTATE ASSE

SCHEDULE III - REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION	12 Months Ended
	Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
SCHEDULE III - REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION	CARTER VALIDUS MISSION CRITICAL REIT, INC. SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION December 31, 2018 (in thousands) Initial Cost Cost Gross Amount Property Description Location Encumbrances Land Buildings and Land Buildings and Total Accumulated Year Date St. Louis Surgical Center Creve Coeur, MO — (a) 808 8,206 — 808 8,206 9,014 1,946 2005 02/09/2012 Stonegate Medical Center Austin, TX — (a) 1,904 5,764 (227 ) 1,904 5,537 7,441 1,231 2008 03/30/2012 HPI Integrated Medical Facility Oklahoma City, OK — (a) 789 7,815 — 789 7,815 8,604 1,522 2007 06/28/2012 Baylor Medical Center Dallas, TX 17,923 4,012 23,557 — 4,012 23,557 27,569 3,800 2010 08/29/2012 Vibra Denver Hospital Denver, CO — (a) 1,798 15,012 7,349 1,798 22,361 24,159 2,826 1962 (e) 09/28/2012 Vibra New Bedford Hospital New Bedford, MA — (a) 1,992 21,823 — 1,992 21,823 23,815 3,502 1942 10/22/2012 Houston Surgery Center Houston, TX — (a) 503 4,115 1,710 503 5,825 6,328 763 1998 (f) 11/28/2012 Akron General Medical Center Green, OH — (a) 2,936 36,142 (11 ) 2,936 36,131 39,067 5,742 2012 12/28/2012 Grapevine Hospital Grapevine, TX — 962 20,277 105 962 20,382 21,344 3,125 2007 02/25/2013 Wilkes-Barre Healthcare Facility Mountain Top, PA — (a) 335 3,812 — 335 3,812 4,147 673 2012 05/31/2013 Fresenius Healthcare Facility Goshen, IN — (a) 304 3,965 — 304 3,965 4,269 563 2010 06/11/2013 Physicians’ Specialty Hospital Fayetteville, AR — (a) 322 19,974 — 322 19,974 20,296 2,802 1994 (g) 06/28/2013 Christus Cabrini Surgery Center Alexandria, LA — (a) — 4,235 — — 4,235 4,235 592 2007 07/31/2013 Valley Baptist Wellness Center Harlingen, TX — — 8,386 — — 8,386 8,386 1,173 2007 08/16/2013 Akron General Integrated Medical Facility Green, OH — (a) 904 7,933 1 904 7,934 8,838 1,240 2013 08/23/2013 Legent Orthopedic and Spine Hospital (k) San Antonio, TX — 3,440 25,923 4,155 3,440 30,078 33,518 4,515 2013 08/29/2013 Post Acute/Warm Springs Rehab Hospital of Westover Hills San Antonio, TX — (a) 1,740 18,280 — 1,740 18,280 20,020 2,452 2012 09/06/2013 Warm Springs Rehabilitation Hospital San Antonio, TX — (a) — 23,462 — — 23,462 23,462 3,026 1987 11/27/2013 Lubbock Heart Hospital Lubbock, TX 18,366 3,749 32,174 — 3,749 32,174 35,923 4,092 2003 12/20/2013 Walnut Hill Medical Center Dallas, TX — 3,337 79,116 (40,909 ) 1,877 39,667 41,544 557 1983 (h) 02/25/2014 Cypress Pointe Surgical Hospital Hammond, LA — (a) 1,379 20,549 — 1,379 20,549 21,928 2,575 2006 03/14/2014 UTMB Health Clear Lake Campus (m) Webster, TX — 6,937 168,710 64,271 6,937 232,981 239,918 21,062 2014 07/11/2014 Rhode Island Rehabilitation Healthcare Facility North Smithfield, RI — (a) 818 11,597 — 818 11,597 12,415 1,422 1965 (i) 08/28/2014 Select Medical—Akron Akron, OH — (a) 2,207 23,430 — 2,207 23,430 25,637 2,596 2008 08/29/2014 Select Medical—Frisco Frisco, TX — (a) — 20,679 — — 20,679 20,679 2,401 2010 08/29/2014 Select Medical—Bridgeton Bridgeton, MO — (a) — 31,204 — — 31,204 31,204 3,486 2012 08/29/2014 San Antonio Healthcare Facility (l) San Antonio, TX — (a) 3,200 — 17,738 3,200 17,738 20,938 869 2017 09/12/2014 Dermatology Assoc-Randolph Ct Manitowoc, WI — (a) 390 2,202 — 390 2,202 2,592 279 2003 09/15/2014 Initial Cost Cost Gross Amount Property Description Location Encumbrances Land Buildings and Land Buildings and Total Accumulated Year Date Dermatology Assoc-Murray St Marinette, WI — (a) 253 1,134 — 253 1,134 1,387 152 2008 09/15/2014 Dermatology Assoc-N Lightning Dr Appleton, WI — (a) 463 2,049 — 463 2,049 2,512 276 2011 09/15/2014 Dermatology Assoc-Development Dr Bellevue, WI — (a) 491 1,450 — 491 1,450 1,941 196 2010 09/15/2014 Dermatology Assoc-York St Manitowoc, WI — (a) 305 11,299 — 305 11,299 11,604 1,299 1964 (j) 09/15/2014 Dermatology Assoc-Scheuring Rd De Pere, WI — (a) 703 1,851 — 703 1,851 2,554 244 2005 09/15/2014 Dermatology Assoc-Riverview Dr Howard, WI — (a) 552 1,960 — 552 1,960 2,512 263 2011 09/15/2014 Dermatology Assoc-State Rd 44 Oshkosh, WI — (a) 384 2,514 — 384 2,514 2,898 331 2010 09/15/2014 Dermatology Assoc-Green Bay Rd Sturgeon Bay, WI — (a) 364 657 — 364 657 1,021 98 2007 09/15/2014 Lafayette Surgical Hospital Lafayette, LA — (a) 3,909 33,212 262 3,909 33,474 37,383 3,712 2004 09/19/2014 Landmark Hospital of Savannah Savannah, GA — (a) 1,980 15,418 — 1,980 15,418 17,398 1,558 2014 01/15/2015 21st Century Oncology-Yucca Valley Yucca Valley, CA — (a) 663 4,004 — 663 4,004 4,667 444 2009 03/31/2015 21st Century Oncology-Rancho Mirage Rancho Mirage, CA — (a) 156 5,934 — 156 5,934 6,090 650 2008 03/31/2015 21st Century Oncology-Palm Desert Palm Desert, CA — (a) 364 5,340 — 364 5,340 5,704 547 2005 03/31/2015 21st Century Oncology-Santa Rosa Beach Santa Rosa Beach, FL — (a) 646 3,211 — 646 3,211 3,857 318 2003 03/31/2015 21st Century Oncology-Crestview Crestview, FL — (a) 205 2,503 — 205 2,503 2,708 268 2004 03/31/2015 21st Century Oncology-Fort Walton Beach Fort Walton Beach, FL — (a) 747 3,012 — 747 3,012 3,759 317 2005 03/31/2015 21st Century Oncology-Bradenton Bradenton, FL — 835 2,699 (2,524 ) 249 761 1,010 39 2002 03/31/2015 21st Century Oncology-Fort Myers I Fort Myers, FL — (a) 2,301 1,180 — 2,301 1,180 3,481 207 1999 03/31/2015 21st Century Oncology-Fort Myers II Fort Myers, FL — (a) 4,522 13,106 — 4,522 13,106 17,628 1,387 2010 03/31/2015 21st Century Oncology-Bonita Springs Bonita Springs, FL — (a) 1,146 3,978 — 1,146 3,978 5,124 391 2002 03/31/2015 21st Century Oncology-Lehigh Acres Lehigh Acres, FL — (a) 433 2,508 — 433 2,508 2,941 252 2002 03/31/2015 21st Century Oncology-Jacksonville Jacksonville, FL — (a) 802 5,879 — 802 5,879 6,681 701 2009 03/31/2015 21st Century Oncology-Frankfort Frankfort, KY — (a) 291 817 — 291 817 1,108 94 1993 03/31/2015 21st Century Oncology-Las Vegas Las Vegas, NV — (a) 251 4,927 — 251 4,927 5,178 505 2007 03/31/2015 21st Century Oncology-Henderson Henderson, NV — (a) 617 2,324 — 617 2,324 2,941 254 2000 03/31/2015 21st Century Oncology-Fairlea Fairlea, WV — (a) 125 1,717 — 125 1,717 1,842 178 1999 03/31/2015 21st Century Oncology-El Segundo El Segundo, CA — (a) 1,138 8,743 — 1,138 8,743 9,881 852 2009 04/20/2015 21st Century Oncology-Lakewood Ranch Bradenton, FL — (a) 553 8,516 — 553 8,516 9,069 871 2008 04/20/2015 Post Acute Medical - Victoria I Victoria, TX — (a) 331 10,278 — 331 10,278 10,609 714 2013 05/23/2016 Post Acute Medical - Victoria II Victoria, TX — (a) 450 10,393 — 450 10,393 10,843 711 1998 05/23/2016 Post Acute Medical - New Braunfels New Braunfels, TX — (a) 1,619 9,295 — 1,619 9,295 10,914 638 2007 05/23/2016 Post Acute Medical - Covington Covington, LA — (a) 1,529 13,503 — 1,529 13,503 15,032 911 1984 05/23/2016 Post Acute Medical - Hammond Hammond, LA — (a) 852 9,815 — 852 9,815 10,667 687 2004 05/23/2016 $ 36,289 $ 74,746 $ 853,568 $ 51,920 $ 72,700 $ 907,534 $ 980,234 $ 100,897 (a) Property collateralized under the unsecured credit facility. As of December 31, 2018 , 53 commercial properties were collateralized under the unsecured credit facility and the Company had $190,000,000 aggregate principal amount outstanding thereunder. (b) The cost capitalized subsequent to acquisition is shown net of asset write-offs. (c) The aggregated cost for federal income tax purposes is approximately $1,128,912,000 (unaudited). (d) The Company’s assets are depreciated using the straight-line method over the useful lives of the assets by class. Generally, buildings and improvements are depreciated over 15 - 40 years and tenant improvements are depreciated over the shorter of lease term or expected useful life. (e) The Vibra Denver Hospital was renovated in 1985 . (f) The Houston Surgery Center was renovated in 2012 . (g) The Physicians Specialty Hospital was renovated in 2009 . (h) The Walnut Hill Medical Center was renovated in 2013 . (i) The Rhode Island Rehabilitation Healthcare Facility was renovated in 1999 . (j) The Dermatology Assoc-York St was renovated in 2010 . (k) Formerly known as Cumberland Surgical Hospital and Victory Medical Center Landmark. (l) Formerly known as Victory IMF. (m) Formerly known as Bay Area Regional Medical Center. CARTER VALIDUS MISSION CRITICAL REIT, INC. SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION (CONTINUED) December 31, 2018 (in thousands) 2018 2017 2016 Real Estate Balance at beginning of year $ 1,200,232 $ 2,163,358 $ 2,036,330 Additions: Acquisitions — — 58,065 Improvements 4,683 21,678 68,963 Write-offs (15,214 ) (33,211 ) — Dispositions (209,253 ) (951,593 ) — Other adjustments (214 ) — — Balance at end of year $ 980,234 $ 1,200,232 $ 2,163,358 Accumulated Depreciation Balance at beginning of year $ (101,777 ) $ (152,486 ) $ (100,142 ) Depreciation (24,020 ) (49,483 ) (52,344 ) Write-offs 8,461 — — Dispositions 16,225 100,192 — Other adjustments 214 — — Balance at end of year $ (100,897 ) $ (101,777 ) $ (152,486 )

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation The accompanying consolidated financial statements include the accounts of the Company, the Operating Partnership, all majority-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP necessarily requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. These estimates are made and evaluated on an ongoing basis using information that is currently available as well as various other assumptions believed to be reasonable under the circumstances. Actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents may include cash and short-term investments. Short-term investments are stated at cost, which approximates fair value.
Restricted Cash	Restricted Cash Restricted cash consists of restricted cash held in escrow and restricted bank deposits. Restricted cash held in escrow includes cash held by lenders in escrow accounts for tenant and capital improvements, repairs and maintenance and other lender reserves for certain properties, in accordance with the respective lender’s loan agreement. Restricted cash held in escrow is reported in other assets, net, in the accompanying consolidated balance sheets . Restricted bank deposits consist of tenant receipts for certain properties which are required to be deposited into lender controlled accounts in accordance with the respective lender's loan agreement. Restricted bank deposits are reported in other assets, net, in the accompanying consolidated balance sheets . See Note 7—"Other Assets, Net." On April 1, 2017, the Company adopted Accounting Standards Update, or ASU, 2016-18, Restricted Cash , or ASU 2016-18. ASU 2016-18 requires that a statement of cash flows explain the change during a reporting period in the total of cash, cash equivalents, and amounts generally described as restricted cash. This ASU states that transfers between cash, cash equivalents, and restricted cash are not part of the Company’s operating, investing, and financing activities. Therefore, 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.
Deferred Financing Costs	Deferred Financing Costs Deferred financing costs are loan fees, legal fees and other third-party costs associated with obtaining financing. These costs are amortized over the terms of the respective financing agreements using the effective interest method. Unamortized deferred financing costs are generally expensed when the associated debt is refinanced or repaid before maturity unless specific rules are met that would allow for the carryover of such costs to the refinanced debt. Costs incurred in seeking financing transactions that do not close are expensed in the period in which it is determined that the financing will not close. Deferred financing costs are recorded as a reduction of the related debt on the accompanying consolidated balance sheets. Deferred financing costs related to a revolving line of credit are recorded in other assets, net, on the accompanying consolidated balance sheets.
Investment in Real Estate	Investment in Real Estate Real estate costs related to the acquisition, development, construction and improvement of properties are capitalized. Repair and maintenance costs are expensed as incurred and significant replacements and betterments are capitalized. Repair and maintenance costs include all costs that do not extend the useful life of the real estate asset. The Company considers the period of future benefit of an asset in determining the appropriate useful life. Real estate assets, other than land, are depreciated or amortized on a straight-line basis over each asset’s useful life. The Company estimated the useful lives of its assets by class as follows: Buildings and improvements 15 – 40 years Tenant improvements Shorter of lease term or expected useful life Furniture, fixtures, and equipment 3 – 10 years
Held for Sale and Discontinued Operations	Held for Sale and Discontinued Operations The Company classifies a real estate property as held for sale upon satisfaction all of the following criteria: (i) management commits to a plan to sell a property, (ii) the property is available for immediate sale in its present condition, subject only to terms that are usual and customary for sales of such properties, (iii) there is an active program to locate a buyer, (iv) the property is being actively marketed for sale, (v) the sale of the property is probable and transfer of the asset is expected to be completed within one year, and (vi) actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. Upon the determination to classify a property as held for sale, the Company ceases depreciation and amortization on the real estate properties, including depreciation for tenant improvements, as well as on the amortization of acquired in-place leases. The real estate properties held for sale and associated liabilities are classified separately on the consolidated balance sheets. Such properties are recorded at the lesser of the carrying value or estimated fair value less estimated cost to sell. The Company classifies real estate properties as discontinued operations for all periods presented if they represent a strategic shift that has (or will have) a major effect on the Company's results and operations. The assets, liabilities and operations for the years presented are classified on the consolidated balance sheets and consolidated statements of comprehensive (loss) income as discontinued operations for all periods presented.
Impairment of Long Lived Assets	Impairment of Long Lived Assets The Company continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets may not be recoverable. When indicators of potential impairment suggest that the carrying value of real estate and related intangible assets may not be recoverable, the Company assesses the recoverability of the assets by estimating whether the Company will recover the carrying value of the assets through its undiscounted future cash flows and their eventual disposition. If, based on this analysis, the Company does not believe that it will be able to recover the carrying value of the assets, the Company will record an impairment loss to the extent that the carrying value exceeds the estimated fair value of the assets. When developing estimates of expected future cash flows, the Company makes certain assumptions regarding future market rental income amounts subsequent to the expiration of current lease arrangements, property operating expenses, terminal capitalization and discount rates, the expected number of months it takes to re-lease the property, required tenant improvements and the number of years the property will be held for investment. The use of alternative assumptions in the future cash flow analysis could result in a different determination of the property’s future cash flows and a different conclusion regarding the existence of an impairment, the extent of such loss, if any, as well as the carrying value of the real estate and related assets. In addition, the Company applies a market approach using comparable sales for certain properties. The use of alternative assumptions in the market approach analysis could result in a different determination of the property’s estimated fair value and a different conclusion regarding the existence of an impairment, the extent of such loss, if any, as well as the carrying value of the real estate and related assets. Impairment of Real Estate During the year ended December 31, 2018 , real estate assets related to two healthcare properties with an aggregate carrying amount of $49,103,000 were determined to be impaired, using Level 2 inputs of the fair value hierarchy (defined below). The carrying value of the properties were reduced to their estimated fair value of $42,515,000 , resulting in an impairment charge of $6,588,000 , which is included in impairment loss on real estate in the consolidated statements of comprehensive (loss) income . During the year ended December 31, 2017 , real estate assets related to four properties with an aggregate carrying amount of $85,768,000 were determined to be impaired, using Level 3 inputs of the fair value hierarchy (defined below). The Company used a discounted cash flow analysis and market valuation approach, which required certain judgments to be made by management. The carrying value of the properties were reduced to their estimated fair value of $52,557,000 , resulting in an impairment charge of $33,211,000 , which is included in impairment loss on real estate in the consolidated statements of comprehensive (loss) income . The Company reviews each property based on the highest and best use and market participant assumptions. See Note 13—"Fair Value" for more details. During the year ended December 31, 2017 , the Company recorded an impairment loss of $5,936,000 related to one real estate property, which was sold on December 28, 2017 in the amount of $88,000,000 . The impairment loss is included in impairment loss on real estate in the consolidated statements of comprehensive (loss) income . No impairment losses were recorded during the year ended December 31, 2016 . Impairment of Acquired Intangible Assets and Intangible Lease Liabilities For the year ended December 31, 2018 , the Company recognized an impairment of two in-place lease intangible assets in the amount of approximately $21,505,000 , of which $21,296,000 was related to a former tenant of the Company, Bay Area Regional Medical Center, LLC, or Bay Area, by accelerating the amortization of the intangible assets. On August 13, 2018, the Company terminated its lease agreement with Bay Area. As of December 31, 2018 , the Company does not have any acquired intangible assets or intangible lease liabilities related to Bay Area. In addition, for the year ended December 31, 2018, the Company accelerated the amortization of an above-market lease intangible asset in the amount of $311,000 as a result of a lease termination. For the year ended December 31, 2017 , the Company recognized an impairment of three in-place lease intangible assets in the amount of approximately $1,151,000 by accelerating the amortization of the intangibles as a result of a lease amendment. For the year ended December 31, 2016 , the Company recognized an impairment of one in-place lease intangible asset and one capitalized lease commission by accelerating the amortization in the amount of $16,422,000 as a result of two tenants experiencing financial difficulties.
Fair Value	Fair Value Accounting Standards Codification, or ASC, 820, Fair Value Measurements and Disclosures , or ASC 820, defines fair value, establishes a framework for measuring fair value in accordance with GAAP and expands disclosures about fair value measurements. ASC 820 emphasizes that fair value is intended to be a market-based measurement, as opposed to a transaction-specific measurement. Fair value is defined by ASC 820 as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, various techniques and assumptions can be used to estimate the fair value. Assets and liabilities are measured using inputs from three levels of the fair value hierarchy, as follows: Level 1—Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. An active market is defined as a market in which transactions for the assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis. Level 2—Inputs other than quoted prices for similar assets and liabilities in active markets that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data correlation or other means (market corroborated inputs). Level 3—Unobservable inputs, only used to the extent that observable inputs are not available, reflect the Company’s assumptions about the pricing of an asset or liability. The following describes the methods the Company used to estimate the fair value of the Company’s financial assets and liabilities: Cash and cash equivalents, restricted cash, tenant receivables, property escrow deposits, prepaid expenses, accounts payable and accrued liabilities —The Company considered the carrying values of these financial instruments, assets and liabilities, to approximate fair value because of the short period of time between origination of the instruments and their expected realization. Notes payable—Fixed Rate —The fair value is estimated by discounting the expected cash flows on notes payable at current rates at which management believes similar loans would be made considering the terms and conditions of the loan and prevailing market interest rates. Notes payable—Variable Rate —The carrying value of variable rate notes payable approximates fair value because the interest rates adjust with current market conditions. Unsecured credit facility—Fixed Rate —The fair value is estimated by discounting the expected cash flows on the fixed rate unsecured credit facility at current rates at which management believes similar borrowings would be made considering the terms and conditions of the borrowings and prevailing market interest rates. Unsecured credit facility—Variable Rate —The carrying value of the variable rate unsecured credit facility approximates fair value as the interest is calculated at the London Interbank Offered Rate, plus an applicable margin. The interest rate resets to market on a monthly basis. The fair value of the Company's variable rate unsecured credit facility is estimated based on the interest rates currently offered to the Company by financial institutions. Notes receivable —The fair value is estimated by discounting the expected cash flows on the notes at interest rates at which management believes similar loans would be made. Derivative instruments —The Company’s derivative instruments consist of interest rate swaps. These swaps are carried at fair value to comply with the provisions of ASC 820. The fair value of these instruments is determined using interest rate market pricing models. The Company incorporated credit valuation adjustments to appropriately reflect the Company’s nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. Considerable judgment is necessary to develop estimated fair values of financial assets and liabilities. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize, or be liable for on disposition of the financial assets and liabilities.
Revenue Recognition, Tenant Receivables and Allowance for Uncollectible Accounts	Revenue Recognition, Tenant Receivables and Allowance for Uncollectible Accounts Effective January 1, 2018, the Company recognizes non-rental related revenue in accordance with Accounting Standards Codification, or ASC, 606, Revenue from Contracts with Customers , or ASC 606. The core principle of ASC 606 is that an entity should recognize 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 or services. A five-step transactional analysis is required to determine how and when to recognize revenue. Non-rental revenue, subject to ASC 606, is immaterial to the Company's financial statements. The Company has identified its revenue streams as rental income from leasing arrangements and tenant reimbursement revenue, which are outside the scope of ASC 606. The majority of the Company's revenue is derived from rental revenue which is accounted for in accordance with ASC 840, Leases . In accordance with ASC 840, Leases , minimum rental revenue is recognized on a straight-line basis over the term of the related lease (including rent holidays). Differences between rental income recognized and amounts contractually due under the lease agreements are credited or charged to straight-line rent receivable or straight-line rent liability, as applicable. Tenant reimbursement revenue, which is comprised of additional amounts recoverable from tenants for common area maintenance expenses and certain other recoverable expenses, is recognized when the services are provided and the performance obligations are satisfied. Tenant receivables and unbilled straight-line rent receivables are carried net of the allowances for uncollectible current tenant receivables and unbilled deferred rent. An allowance will be maintained for estimated losses resulting from the inability of certain tenants to meet the contractual obligations under their lease agreements. The Company also maintains an allowance for straight-line rent receivables arising from the straight-lining of rents. The Company’s determination of the adequacy of these allowances is based primarily upon evaluations of historical loss experience, the tenant’s financial condition, security deposits, letters of credit, lease guarantees and current economic conditions and other relevant factors. For the years ended December 31, 2018 , 2017 and 2016 , the Company recorded $36,478,000 , $17,930,000 and $24,628,000 , respectively, in provision for doubtful accounts for rental revenue and straight-line rent receivable, which are recorded as a reduction in revenue in the accompanying consolidated statements of comprehensive (loss) income . Of the $36,478,000 recorded for the year ended December 31, 2018 , $33,242,000 related to Bay Area. As of December 31, 2018 , the Company had fully reserved for and written off all its outstanding accounts receivable for rental revenue and straight-line rent receivable related to delinquent accounts. On October 24, 2018, the Company entered into a lease agreement with a new tenant, the Board of Regents of the University of Texas System, or the Board of Regents, which is an affiliate of the University of Texas Medical Branch, or UTMB, to lease the UTMB Health Clear Lake Campus (formerly known as the Bay Area Regional Medical Center) property. The lease agreement has an initial 15 -year term with three 5 -year renewal terms exercisable at the option of the Board of Regents, (subject to certain conditions) and provides for a fixed base rent for the first 5 years of the lease term that will be payable monthly, subsequent to a free-rent period from October 1, 2018 to June 30, 2019. For the years ended December 31, 2018 , 2017 and 2016 , the Company recorded $4,284,000 , $2,825,000 and $1,549,000 , respectively, in provision for doubtful accounts for tenant reimbursement revenue, which are recorded as a reduction in revenue in the accompanying consolidated statements of comprehensive (loss) income . Of the $4,284,000 recorded for the year ended December 31, 2018 , $3,634,000 related to Bay Area. As of December 31, 2018 , the Company had fully reserved for and written off all its accounts receivable for tenant reimbursement revenue related to delinquent accounts.
Notes Receivable	Notes Receivable Notes receivable are reported at their outstanding principal balance, net of any unearned income, unamortized deferred fees and costs and allowances for loan losses. The unamortized deferred fees and costs are amortized over the life of the notes receivable, as applicable and recorded in other interest and dividend income in the accompanying consolidated statements of comprehensive (loss) income . The Company evaluates the collectability of both interest and principal on each note receivable to determine whether it is collectible, primarily through the evaluation of credit quality indicators, such as the tenant's financial condition, collateral, evaluations of historical loss experience, current economic conditions and other relevant factors, including contractual terms of repayments. Evaluating a note receivable for potential impairment requires management to exercise judgment. The use of alternative assumptions in evaluating a note receivable could result in a different determination of the note's estimated fair value and a different conclusion regarding the existence of an impairment, the extent of such loss, if any, as well as the carrying value of the note receivable. As of December 31, 2018 and 2017 , the aggregate balance of the Company's notes receivable, including accrued interest receivable (if applicable), after allowances for loan losses was $2,700,000 and $20,138,000 , respectively, related to Bay Area. The principal balances of the Company's notes receivable are secured by their respective collateral. For the years ended December 31, 2018 , 2017 and 2016 , the Company recorded $2,782,000 , $11,936,000 , and $4,294,000 , respectively, in provision for loan losses in the accompanying consolidated financial statements. Of the $2,782,000 recorded for the year ended December 31, 2018 , $1,810,000 related to Bay Area. On August 13, 2018, the Company terminated its lease agreement with Bay Area, and on August 21, 2018, the Company accepted equipment in exchange for full settlement on a note receivable, which had an outstanding principal balance of $20,000,000 . The equipment was accounted for at fair value of $21,000,000 , less costs to sell of $100,000 , and as a result, the Company recorded income on exchange of assets of $900,000 for the year ended December 31, 2018 , which was recorded in other interest and dividend income in the accompanying consolidated statements of comprehensive (loss) income . O n October 22, 2018, the Company sold its equipment held for sale to UTMB, generating net proceeds from the sale of approximately $20,900,000 .
Income Taxes	Income Taxes The Company currently qualifies and is taxed as a REIT under Sections 856 through 860 of the Code. Accordingly, it will generally not be subject to corporate U.S. federal or state income tax to the extent that it makes qualifying distributions to stockholders, and provided it satisfies, on a continuing basis, through actual investment and operating results, the REIT requirements, including certain asset, income, distribution and stock ownership tests. If the Company fails to qualify as a REIT, and does not qualify for certain statutory relief provisions, it would be subject to U.S. federal, state and local income taxes and may be precluded from qualifying as a REIT for the subsequent four taxable years following the year in which it lost its REIT qualification, unless the Internal Revenue Service grants the Company relief under certain statutory provisions. Accordingly, failure to qualify as a REIT could have a material adverse impact on the results of operations and amounts available for distribution to stockholders. The dividends paid deduction of a REIT for qualifying dividends paid to its stockholders is computed using the Company’s taxable income as opposed to net income reported in the consolidated financial statements. Taxable income, generally, will differ from net income reported in the consolidated financial statements because the determination of taxable income is based on tax provisions and not financial accounting principles. The Company has concluded that there was no impact related to uncertain tax provisions from results of operations of the Company for the years ended December 31, 2018 , 2017 and 2016 . The United States of America is the jurisdiction for the Company, and the earliest tax year subject to examination is 2015.
Concentration of Credit Risk and Significant Leases	Concentration of Credit Risk and Significant Leases As of December 31, 2018 , the Company had cash on deposit, including restricted cash, in certain financial institutions that had deposits in excess of current federally insured levels. The Company limits its cash investments to financial institutions with high credit standings; therefore, the Company believes it is not exposed to any significant credit risk on its cash deposits. To date, the Company has experienced no loss of or lack of access to cash in its accounts. As of December 31, 2018 , the Company owned real estate investments in 32 metropolitan statistical areas, or MSAs, two of which accounted for 10.0% or more of revenue from continuing operations. Real estate investments located in the San Antonio-New Braunfels, Texas MSA and the Dallas-Fort Worth-Arlington, Texas MSA accounted for an aggregate of 11.6% and 10.4% , respectively, of revenue from continuing operations for the year ended December 31, 2018 . For the year ended December 31, 2018 , 100.0% of revenue from continuing operations was from the healthcare properties. As of December 31, 2018 , the Company had two exposures to tenant concentration that accounted for 10.0% or more of revenue from continuing operations. The leases with Post Acute Medical, LLC and 21st Century Oncology, Inc. accounted for 20.2% and 12.5% , respectively, of revenue from continuing operations for the year ended December 31, 2018 .
Stockholders' Equity	Stockholders’ Equity As of December 31, 2018 , the Company was authorized to issue 350,000,000 shares of stock, of which 300,000,000 shares are designated as common stock at $0.01 par value per share and 50,000,000 shares are designated as preferred stock at $0.01 par value per share. As of December 31, 2018 , the Company had approximately 203,115,000 shares of common stock issued and 183,082,000 shares of common stock outstanding, and no shares of preferred stock issued and outstanding. As of December 31, 2017 , the Company had approximately 196,893,000 shares of common stock issued and 186,182,000 shares of common stock outstanding, and no shares of preferred stock issued and outstanding. The Company’s board of directors may authorize additional shares of common stock and amend their terms without obtaining stockholder approval.
Share Repurchase Program	Share Repurchase Program The Company’s share repurchase program allows for repurchases of shares of the Company’s common stock when certain criteria are met. The share repurchase program provides that all repurchases during any calendar year, including those redeemable upon death or a qualifying disability of a stockholder, are limited to those that can be funded with equivalent reinvestments pursuant to the DRIP during the prior calendar year and other operating funds, if any, as the board of directors, in its sole discretion, may reserve for this purpose. Repurchases of shares of the Company’s common stock are at the sole discretion of the Company’s board of directors, provided, however, that the Company will limit the number of shares repurchased during any calendar year to 5.0% of the number of shares of common stock outstanding as of December 31st of the previous calendar year. In addition, the Company will further limit the amount of shares repurchased each quarter, subject to adjustments in accordance with the 5.0% annual share limitation. The Company’s board of directors, in its sole discretion, may suspend (in whole or in part) the share repurchase program at any time, and may amend, reduce, terminate or otherwise change the share repurchase program upon 30 days ' prior notice to the Company’s stockholders for any reason it deems appropriate. On April 30, 2018, the Company announced it had reached the 5.0% annual share limitation, and that it would not be able to fully accommodate all repurchase requests for the month of April 2018, and, as a result, the Company did not process any further requests for the remainder of the year ended December 31, 2018. For repurchase requests received by the Company for the April 30, 2018, shares of common stock were repurchased as follows: (i) first, pro rata as to repurchases upon the death of a stockholder; (ii) next, pro rata as to repurchases to stockholders who demonstrate, in the discretion of the board of directors, another involuntary exigent circumstance, such as bankruptcy; (iii) next, pro rata as to repurchases to stockholders subject to a mandatory distribution requirement under such stockholder’s individual retirement account; and (iv) finally, pro rata as to all other repurchase requests. See Part II, Item 5. "Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities" for more information on the Company's share repurchase program. On July 26, 2018, the Company's board of directors approved and adopted the Amended and Restated Share Repurchase Program, or the First Amended & Restated SRP, which became effective when the Company recommenced repurchasing shares of common stock in 2019. The First Amended & Restated SRP provides, among other things, that the Company will repurchase shares on a quarterly, instead of monthly, basis. See Note 21—"Subsequent Events" for share repurchases processed subsequent to December 31, 2018 . On October 24, 2018, the board of directors approved and adopted the Second Amended and Restated Share Repurchase Program, or the Second Amended & Restated SRP, in order to update the definition of "Repurchase Date" in order to clarify that the Company will either accept or reject a repurchase request by the first day of each quarter, and will process accepted repurchase requests on or about the tenth day of such quarter. Further, if a repurchase is granted, the Company or its agent will send the repurchase amount to each stockholder, estate, heir, or beneficiary on or about the tenth day of such quarter. During the year ended December 31, 2018 , the Company repurchased approximately 9,321,000 shares of common stock, or 5.00% of shares outstanding as of December 31, 2017, for an aggregate purchase price of approximately $64,289,000 (an average of $6.90 per share). During the year ended December 31, 2017 , the Company repurchased approximately 5,773,000 shares of common stock, or 3.12% of shares of common stock outstanding as of December 31, 2016, for an aggregate purchase price of approximately $57,049,000 (an average of $9.88 per share).
Distribution Policy and Distributions Payable	Distribution Policy and Distributions Payable In order to maintain its status as a REIT, the Company is required to make distributions each taxable year equal to at least 90% of its REIT taxable income, computed without regard to the dividends paid deduction and excluding capital gains. To the extent funds are available, the Company intends to continue to pay regular distributions to stockholders. Distributions are paid to stockholders of record as of the applicable record dates. The Company’s distributions declared per common share was $3.49 for the year ended December 31, 2018. The Company's distributions declared per common share was $0.70 for the years ended December 31, 2017 and 2016. On January 22, 2018, the Company's board of directors declared a special cash distribution of $3.00 per share of common stock. The special cash distribution was funded with proceeds from the disposition of certain real estate properties between December 2017 and January 2018 and the Company's unsecured credit facility. The special cash distribution was paid on March 16, 2018 to stockholders of record at the close of business on February 15, 2018. As of December 31, 2018, the Company had distributions payable of approximately $4,974,000 . Of these distributions payable, approximately $2,691,000 was paid in cash and approximately $2,283,000 was reinvested in shares of common stock pursuant to the DRIP on January 2, 2019. See Note 21—"Subsequent Events" for further discussion. Distributions to stockholders are determined by the board of directors of the Company and are dependent upon a number of factors relating to the Company, including funds available for the payment of distributions, financial condition, capital expenditure requirements, and annual distribution requirements in order to maintain the Company’s status as a REIT under the Code.
Earnings Per Share	Earnings Per Share Basic earnings per share for all periods presented are computed by dividing net income (loss) attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Shares of non-vested restricted common stock give rise to potentially dilutive shares of common stock. Diluted earnings per share are computed based on the weighted average number of shares outstanding and all potentially dilutive securities. For the years ended December 31, 2018 and 2017 , diluted earnings per share was computed the same as basic earnings per share because the Company recorded a loss from continuing operations, which would make potentially dilutive shares related to non-vested shares of restricted common stock antidilutive. For the year ended December 31, 2016 , diluted earnings per share reflected the effect of approximately 18,000 non-vested shares of restricted common stock that were outstanding as of such period.
Reportable Segments	Reportable Segments ASC 280, Segment Reporting , establishes standards for reporting financial and descriptive information about an enterprise’s reportable segments. As of December 31, 2018 , 2017 and 2016 , 100% of the Company’s consolidated revenues from continuing operations were generated from real estate investments in healthcare properties. The Company’s chief operating decision maker evaluates operating performance of healthcare properties on an individual property level, which are aggregated into one reportable segment due to their similar economic characteristics. In accordance with the definition of discontinued operations, the Company's decision to sell the properties in the data centers segment represented a strategic shift that had a major effect on the Company's results and operations and assets and liabilities for the periods presented. As a result, the Company no longer has a data centers segment. All activities related to the previously reported data centers segment have been classified as discontinued operations. The assets and liabilities related to discontinued operations are separately classified on the consolidated balance sheets as of December 31, 2018 and 2017 , and the operations have been classified as income from discontinued operations on the consolidated statements of comprehensive (loss) income for the years ended December 31, 2018 , 2017 and 2016 .
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities As required by ASC 815, Derivatives and Hedging, or ASC 815, the Company records all derivative instruments as assets and liabilities in the statement of financial position at fair value. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, a company must designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge or a hedge of a net investment in a foreign operation. For derivative instruments not designated as hedging instruments, the income or loss is recognized in the consolidated statements of comprehensive (loss) income during the current period. The Company is exposed to variability in expected future cash flows that are attributable to interest rate changes in the normal course of business. The Company’s primary strategy in entering into derivative contracts is to add stability to future cash flows by managing its exposure to interest rate movements. The Company utilizes derivative instruments, including interest rate swaps, to effectively convert some its variable rate debt to fixed rate debt. The Company does not enter into derivative instruments for speculative purposes. In accordance with ASC 815, the Company designates interest rate swap contracts as cash flow hedges of floating-rate borrowings. For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain or loss on the derivative instrument is reported as a component of other comprehensive income (loss) in the consolidated statements of comprehensive (loss) income and reclassified into earnings in the same line item associated with the forecasted transaction and the same period during which the hedged transaction affects earnings. The ineffective portion of the income or loss on the derivative instrument is recognized in the consolidated statements of comprehensive (loss) income during the current period. In accordance with the fair value measurement guidance ASU 2011-04, Fair Value Measurement , the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements On May 28, 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers , or ASU 2014-09. The pronouncement was issued to clarify the principles for recognizing revenue and to develop a common revenue standard and disclosure requirements. The pronouncement is effective for reporting periods beginning after December 15, 2017. On February 25, 2016, the FASB released ASU 2016-02, Leases (Topic 842). Upon adoption of ASU 2016-02 in 2019, as discussed below, the Company will be required to separate lease contracts into lease and non-lease components, whereby the non-lease components would be subject to ASU 2014-09. The Company adopted the provisions of ASU 2014-09 effective January 1, 2018, using the modified retrospective approach. Property rental revenue is accounted for in accordance with ASC 840, Leases . The Company's rental revenue consists of (i) contractual revenues from leases recognized on a straight-line basis over the term of the respective lease; (ii) parking revenue; and (iii) the reimbursements of the tenants' share of real estate taxes, insurance and other operating expenses. The Company determined that the revenue recognition from parking revenue will be generally consistent with prior recognition methods, and, therefore, did not have material changes to the consolidated financial statements as a result of adoption. For the year ended December 31, 2018, parking revenue was 0.02% of consolidated revenue. The Company evaluated the revenue recognition for its contracts within this scope under the previous accounting standards and under ASU 2014-09 and concluded that there were no changes to the consolidated financial statements as a result of adoption. On February 23, 2017, the FASB issued ASU 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Non-financial Assets , ASC 610-20 , or ASU 2017-05. ASU 2017-05 clarifies the scope of asset derecognition guidance and accounting for partial sales of non-financial assets. Partial sales of non-financial assets include transactions in which the seller retains an equity interest in the entity that owns the assets or has an equity interest in the buyer. ASU 2017-05 provides guidance on how entities should recognize sales, including partial sales, of non-financial assets (and in-substance non-financial assets) to non-customers. ASU 2017-05 requires the seller to recognize a full gain or loss in a partial sale of non-financial assets, to the extent control is not retained. Any noncontrolling interest retained by the seller would, accordingly, be measured at fair value. ASU 2017-05 was effective for fiscal years beginning after December 15, 2017, including interim reporting periods within those fiscal years. The Company adopted ASU 2017-05 effective January 1, 2018. The Company disposed certain real estate properties, including land, in cash transactions with no contingencies and no future involvement in the operations, therefore, the adoption of ASU 2017-05 had no impact on the Company's consolidated financial statements. On February 25, 2016, the FASB established Topic 842, Leases , by issuing ASU 2016-02. ASU 2016-02 establishes the principles to increase the transparency about the assets and liabilities arising from leases. ASU 2016-02 results in a more faithful representation of the rights and obligations arising from leases by requiring lessees to recognize the lease assets and lease liabilities that arise from leases in the consolidated balance sheet and to disclose qualitative and quantitative information about lease transactions and aligns lessor accounting and sale leaseback transactions guidance more closely to comparable guidance in ASC 606, and ASC 610-20. Under ASU 2016-02, a lessee is required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. The Company is a lessee on four ground leases, which will result in the recognition of a right-of-use asset and lease liability upon the adoption of ASU 2016-02. On July 30, 2018, the FASB issued ASU 2018-11, Targeted Improvements , to simplify the guidance by allowing lessors to elect a practical expedient to not separate non-lease components from a lease, which would provide the Company with the option of not bifurcating certain common area maintenance recoveries as a non-lease component. As a result of electing this practical expedient, the Company will no longer present rental revenue and tenant reimbursement revenue separately in the consolidated statement of comprehensive income beginning on January 1, 2019. In addition, the Company is planning to elect the package of practical expedients, which permits the Company to not reassess (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) any initial direct costs for any existing leases as of the effective date. The Company is not planning to elect the hindsight practical expedient, which permits entities to use hindsight in determining the lease term and assessing impairment. On December 10, 2018, the FASB issued ASU 2018-20, Narrow-Scope Improvements for Lessors, that allows lessors to make an accounting policy election not to evaluate whether real estate taxes and other similar taxes imposed by a governmental authority on a specific lease revenue-producing transaction are the primary obligation of the lessor as owner of the underlying leased asset. A lessor that makes this election will exclude these taxes from the measurement of lease revenue and the associated expense. The amendment also requires lessors to (1) exclude lessor costs paid directly by lessees to third parties on the lessor’s behalf from variable payments and therefore variable lease revenue and (2) include lessor costs that are paid by the lessor and reimbursed by the lessee in the measurement of variable lease revenue and the associated expense. The Company will adopt ASU 2018-20 beginning with its Quarterly Report on Form 10-Q for the three months ended March 31, 2019. Based on current estimates the Company anticipates recognizing operating lease liabilities for its ground leases, with a corresponding right-of-use asset, of less than 5.0% and 1.0% of total liabilities and total assets, respectively. In addition to the recording a right-of-use asset and lease liability upon adoption, the Company will reclassify the below-market ground lease intangibles and the above-market ground lease intangibles from the acquired intangible assets, net, and intangible lease liabilities, net, respectively, to the beginning right-of-use assets. Future ground leases entered into or acquired subsequent to the adoption date may be classified as operating or financing leases, based on specific classification criteria. Finance leases would result in a slightly accelerated impact to earnings, using the effective interest method, and different classification of the expense. The Company expects to adopt the new standard on January 1, 2019, using a modified retrospective approach. Financial information under the new standard will not be updated for dates and periods before January 1, 2019. With the adoption of ASU 2016-02, lessor accounting remains largely unchanged, apart from the narrower scope of initial direct costs that can be capitalized. The new standard will result in certain indirect leasing costs, such as legal costs related to lease negotiations, being expensed as general and administrative expenses in the consolidated statements of comprehensive (loss) income rather than capitalized. Previous capitalization of indirect leasing costs was less than 1.0% of total assets as of December 31, 2018. On June 16, 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses , or ASU 2016-13. ASU 2016-13 requires more timely recording of credit losses on loans and other financial instruments that are not accounted for at fair value through net income, including loans held for investment, held-to-maturity debt securities, trade and other receivables, net investment in leases and other such commitments. ASU 2016-13 requires that financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The amendments in ASU 2016-13 require the Company to measure all expected credit losses based upon historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of the financial assets and eliminates the “incurred loss” methodology in current GAAP. ASU 2016-13 is effective for fiscal years, and interim periods within, beginning after December 15, 2019. Early adoption is permitted for fiscal years, and interim periods within, beginning after December 15, 2018. The Company is in the process of evaluating the impact ASU 2016-13 will have on the Company’s condensed consolidated financial statements. The Company believes that certain financial statements' accounts may be impacted by the adoption of ASU 2016-13, including allowances for doubtful accounts with respect to accounts receivable and straight-line rent receivable. On August 17, 2018, the SEC issued a final rule, SEC Final Rule Release No. 33-10532, Disclosure Update and Simplification , that amends certain of its disclosure requirements that have become redundant, duplicative, overlapping, outdated or superseded, in light of other SEC disclosure requirements or GAAP. For filings on Form 10-Q, the final rule, among other items, extends to interim periods the annual requirement to disclose changes in stockholders’ equity. As amended by the final rule, entities must analyze changes in stockholders’ equity, in the form of a reconciliation, for the then current and comparative year-to-date interim periods, with subtotals for each interim period. The final rule becomes effective on November 5, 2018. The SEC staff said it would not object to a registrant waiting to comply with the new interim disclosure requirement until the filing of its Form 10-Q for the first quarter beginning after the effective date of the rule. As a result, the Company will apply these changes in the presentation of stockholders’ equity beginning with its Quarterly Report on Form 10-Q for the three months ended March 31, 2019. The Company has determined this final rule will not have a material impact on the Company's financial condition, results of operations or financial statement disclosures. On August 28, 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities , or ASU 2017-12. The objectives of ASU 2017-12 are to (i) improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities by better aligning the entity’s financial reporting for hedging relationships with those risk management activities and (ii) reduce the complexity of and simplify the application of hedge accounting by preparers. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018, and interim periods therein. Early adoption is permitted. Upon adoption of ASU 2017-12 on January 1, 2019, the cumulative ineffectiveness previously recognized on existing cash flow hedges is immaterial to the Company's consolidated financial statements and will be adjusted and removed from beginning retained earnings and placed in accumulated other comprehensive income. On August 28, 2018, the FASB issued ASU 2018-13, Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement , or ASU 2018-13. ASU 2018-13 removes certain disclosure requirements, including the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between the levels and the valuation processes for Level 3 fair value measurements. ASU 2018-13 also adds certain disclosure requirements, including the requirement to disclose the changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, and interim periods therein. Early adoption is permitted. The Company is in the process of evaluating the impact that ASU 2018-13 will have on the Company's consolidated financial statements.
Reclassifications	Reclassifications Certain prior period amounts have been reclassified to conform to the current financial statement presentation, with no effect on the Company’s consolidated financial position or results of operations. T he Company's assets, liabilities and operations related to the data centers segment in the financial statements are classified on the consolidated balance sheets and consolidated statements of comprehensive (loss) income as discontinued operations for all years presented.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Reconciliation of Cash, Cash Equivalents and Restricted Cash	The following table presents a reconciliation of the beginning of year and end of year cash, cash equivalents and restricted cash reported within the consolidated balance sheets to the totals shown in the consolidated statements of cash flows (amounts in thousands): For the Year Ended Beginning of year: 2018 2017 2016 Cash and cash equivalents $ 336,500 $ 42,613 $ 28,527 Restricted cash (1) 15,414 14,992 14,543 Cash, cash equivalents and restricted cash $ 351,914 $ 57,605 $ 43,070 End of year: Cash and cash equivalents $ 43,133 $ 336,500 $ 42,613 Restricted cash 168 15,414 (1) 14,992 (1) Cash, cash equivalents and restricted cash $ 43,301 $ 351,914 $ 57,605 (1) Amount attributable to continuing and discontinued operations.
Schedule of Estimated Useful Lives of Assets by Class	The Company estimated the useful lives of its assets by class as follows: Buildings and improvements 15 – 40 years Tenant improvements Shorter of lease term or expected useful life Furniture, fixtures, and equipment 3 – 10 years

Dispositions (Tables)

Dispositions (Tables)	12 Months Ended
	Dec. 31, 2018
Real Estate [Abstract]
Schedule of Dispositions - Discontinued Operations	The operations related to these assets have been included in discontinued operations on the consolidated statements of comprehensive (loss) income . Property Description Disposition Date Ownership Percentage Sale Price Net Proceeds Arizona Data Center Portfolio (1) 01/10/2018 100% $ 142,500 $ 140,176 Milwaukee Data Center 06/11/2018 100% 21,000 20,397 Alpharetta Data Center II 06/15/2018 100% 64,000 62,858 Andover Data Center 07/25/2018 100% 15,000 14,633 Total $ 242,500 $ 238,064 (1) The Arizona Data Center Portfolio was sold as a two -property portfolio consisting of the Phoenix Data Center and the Scottsdale Data Center. The operations related to these assets have been included in discontinued operations on the consolidated statements of comprehensive (loss) income . Property Description Disposition Date Ownership Percentage Chicago Data Center (1) 12/14/2017 100 % Richardson Data Center (2) 12/20/2017 100 % 180 Peachtree Data Center (2) 12/20/2017 20.53 % (3) Northwoods Data Center (2) 12/20/2017 100 % Southfield Data Center (2) 12/20/2017 100 % Plano Data Center (2) 12/20/2017 100 % Arlington Data Center (2) 12/20/2017 100 % Philadelphia Data Center (2) 12/20/2017 100 % Raleigh Data Center (2) 12/20/2017 100 % Leonia Data Center (2) 12/20/2017 100 % AT&T Wisconsin Data Center (2) 12/20/2017 100 % AT&T Tennessee Data Center (2) 12/20/2017 100 % AT&T California Data Center (2) 12/20/2017 100 % Charlotte Data Center (2) 12/20/2017 100 % Alpharetta Data Center (2) 12/20/2017 100 % (1) The Chicago Data Center was sold for aggregate consideration of $315,000,000 . The Company generated net proceeds on the sale of the Chicago Data Center of approximately $310,396,000 . (2) The property was sold as part of a 14 -property portfolio, or the Mapletree Portfolio, for aggregate consideration of $750,000,000 . The Company generated net proceeds on the sale of the Mapletree Portfolio of approximately $733,687,000 . (3) On January 3, 2012, an indirect partially-owned subsidiary of the Operating Partnership purchased the 180 Peachtree Data Center through a consolidated partnership with three unaffiliated institutional investors. The Operating Partnership owned approximately 20.53% and the institutional investors owned an aggregate of 79.47% of the consolidated partnership’s interests.
Schedule of Dispositions - Continuing Operations	The operations related to these assets have been included in continuing operations on the consolidated statements of comprehensive (loss) income . Property Description Disposition Date Ownership Percentage Sale Price Net Proceeds 21st Century Oncology-Tamarac 05/25/2018 100% $ 1,575 $ 1,431 21st Century Oncology-East Naples 05/30/2018 100% 1,590 1,548 Total $ 3,165 $ 2,979 The operations related to these assets have been included in continuing operations on the consolidated statements of comprehensive (loss) income . Property Description Disposition Date Ownership Percentage Sale Price Net Proceeds Miami International Medical Center (1) 12/28/2017 100 % $ 88,000 $ 87,499 (1) The net book value of the Miami International Medical Center at disposal was $93,435,000 , consisting of land in the amount of $8,694,000 and building and improvements in the amount of $84,741,000 . The Company recorded an impairment loss on real estate in continuing operations on the Miami International Medical Center of $5,936,000 , based on the contractual sale price (less cost of sale). The Miami International Medical Center was a part of the Company's healthcare segment.

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Discontinued Operations	The following table presents the major classes of assets and liabilities of properties classified as discontinued operations presented separately in the consolidated balance sheets as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 December 31, 2017 Assets: Real estate: Land $ — $ 21,710 Buildings and improvements, net — 168,557 Total real estate, net — 190,267 Acquired intangible assets, net — 9,617 Other assets, net 401 13,949 Assets of discontinued operations, net $ 401 $ 213,833 Liabilities: Accounts payable due to affiliates $ 12 $ 175 Accounts payable and other liabilities 1 3,847 Intangible lease liabilities, net — 1,036 Liabilities of discontinued operations, net $ 13 $ 5,058 The operations reflected in discontinued operations on the consolidated statements of comprehensive (loss) income for the years ended December 31, 2018 , 2017 and 2016 , were as follows (amounts in thousands): For the Year Ended 2018 2017 2016 Revenue: Rental and parking revenue $ 3,916 $ 102,274 $ 102,663 Tenant reimbursement revenue 162 14,009 14,300 Total revenue 4,078 116,283 116,963 Expenses: Rental and parking expenses 416 20,754 20,159 Change in fair value of contingent consideration — (2,920 ) 300 Asset management fees 322 8,106 8,549 Depreciation and amortization — 32,210 38,744 Total expenses 738 58,150 67,752 Other expense: Interest expense, net — (20,591 ) (14,532 ) Total other expense — (20,591 ) (14,532 ) Income from discontinued operations before real estate dispositions and noncontrolling interest 3,340 37,542 34,679 Gain on real estate dispositions 33,251 224,133 — Net income from discontinued operations 36,591 261,675 34,679 Net loss (income) from discontinued operations attributable to noncontrolling interests in consolidated partnerships 22 (47,326 ) (3,921 ) Net income from discontinued operations attributable to common stockholders $ 36,613 $ 214,349 $ 30,758

Acquired Intangible Assets, N_2

Acquired Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Schedule of Acquired Intangible Assets, Net	Acquired intangible assets, net, consisted of the following as of December 31, 2018 and 2017 (amounts in thousands, except weighted average life amounts): December 31, 2018 December 31, 2017 In-place leases, net of accumulated amortization of $22,679 and $22,519, respectively (with a weighted average remaining life of 13.8 years and 15.1 years, respectively) $ 56,501 $ 83,139 Above-market leases, net of accumulated amortization of $1,079 and $1,068, respectively (with a weighted average remaining life of 8.5 years and 9.3 years, respectively) 2,139 2,747 Ground lease interest, net of accumulated amortization of $64 and $53, respectively (with a weighted average remaining life of 86.6 years and 87.6 years, respectively) 1,041 1,052 $ 59,681 $ 86,938
Schedule of Estimated Future Amortization Expense of Acquired Intangible Assets	Estimated amortization expense on the acquired intangible assets as of December 31, 2018 , and for each of the next five years ending December 31 and thereafter, are as follows (amounts in thousands): Year Amount 2019 $ 5,098 2020 5,098 2021 5,098 2022 5,098 2023 4,933 Thereafter 34,356 $ 59,681

Intangible Lease Liabilities,_2

Intangible Lease Liabilities, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Intangible Lease Liabilities, Net [Abstract]
Schedule of Intangible Lease Liabilities, Net	Intangible lease liabilities, net, consisted of the following as of December 31, 2018 and 2017 (amounts in thousands, except weighted average life amounts): December 31, 2018 December 31, 2017 Below-market leases, net of accumulated amortization of $5,163 and $4,269, respectively (with a weighted average remaining life of 16.2 years and 17.2 years, respectively) $ 11,761 $ 12,655 Ground leasehold liabilities, net of accumulated amortization of $549 and $425, respectively (with a weighted average remaining life of 40.2 years and 41.2 years, respectively) 4,776 4,900 $ 16,537 $ 17,555
Schedule of Estimated Future Amortization Income of Intangible Lease Liabilities	Estimated amortization of the intangible lease liabilities as of December 31, 2018 , and for each of the next five years ending December 31 and thereafter, are as follows (amounts in thousands): Year Amount 2019 $ 1,018 2020 1,014 2021 1,013 2022 1,013 2023 997 Thereafter 11,482 $ 16,537

Other Assets, Net (Tables)

Other Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Other Assets [Abstract]
Schedule of Other Assets, Net	Other assets, net, consisted of the following as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 December 31, 2017 Deferred financing costs related to the revolver portion of the unsecured credit facility, net of accumulated amortization of $9,493 and $7,428, respectively $ 951 $ 762 Lease commissions, net of accumulated amortization of $223 and $63, respectively 6,089 1,266 Investments in unconsolidated partnerships — 965 Tenant receivables, net of allowances for doubtful accounts of $0 and $9,125, respectively 2,039 7,878 Notes receivable, net of allowances for loan losses of $0 and $10,615, respectively 2,700 20,138 Straight-line rent receivable 26,947 36,348 Restricted cash 168 10,168 Derivative assets 426 407 Prepaid and other assets 1,644 1,208 $ 40,964 $ 79,140

Accounts Payable and Other Li_2

Accounts Payable and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Other Liabilities	Accounts payable and other liabilities, as of December 31, 2018 and 2017 , consisted of the following (amounts in thousands): December 31, 2018 December 31, 2017 Accounts payable and accrued expenses $ 2,912 $ 4,203 Accrued interest expense 890 1,558 Accrued property taxes 4,502 4,758 Distributions payable to stockholders 4,974 11,076 Tenant deposits 624 778 Deferred rental income 2,801 5,822 $ 16,703 $ 28,195

Notes Payable (Tables)

Notes Payable (Tables)	12 Months Ended
	Dec. 31, 2018
Notes Payable [Abstract]
Schedule of Notes Payable	The following table summarizes the notes payable balances as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 December 31, 2017 Interest Rate (1) Maturity Date Fixed rate notes payable $ — $ 18,212 —% — Variable rate notes payable fixed through interest rate swaps 17,923 121,066 4.8% 10/11/2022 Variable rate notes payable 18,366 2,199 5.6% 01/26/2019 Total notes payable, principal amount outstanding 36,289 141,477 Unamortized deferred financing costs related to notes payable (75 ) (875 ) Total notes payable, net of deferred financing costs $ 36,214 $ 140,602 (1) Interest rates are as of December 31, 2018 .
Schedule of Future Principal Payments Due on Notes Payable	The principal payments due on the notes payable as of December 31, 2018 , for each of the next four years ending December 31, are as follows (amounts in thousands): Year Amount 2019 (1) $ 18,768 2020 421 2021 444 2022 16,656 $ 36,289 (1) Of this amount, $18,366,000 relates to a loan agreement that was repaid at maturity on January 25, 2019 .

Unsecured Credit Facility (Tabl

Unsecured Credit Facility (Tables)	12 Months Ended
	Dec. 31, 2018
Line of Credit Facility [Abstract]
Schedule of Unsecured Credit Facility	The following table summarizes the unsecured credit facility balances as of December 31, 2018 (amounts in thousands): December 31, 2018 Interest Rate (1) Variable rate revolving line of credit fixed through interest rate swaps $ 38,000 3.1% Variable rate revolving line of credit 152,000 4.1% Total unsecured credit facility $ 190,000 (1) Interest rates are as of December 31, 2018.

Related-Party Transactions an_2

Related-Party Transactions and Arrangements (Tables)	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Schedule of Related-Party Transactions	The following table details amounts incurred for the years ended December 31, 2018 , 2017 and 2016 in connection with the Company's operations-related services described above (amounts in thousands): Incurred For the Year Ended Fee Entity 2018 2017 2016 Asset management fees (1) Carter/Validus Advisors, LLC and its affiliates $ 10,131 $ 18,717 $ 19,505 Operating expense reimbursement Carter/Validus Advisors, LLC and its affiliates 1,728 1,598 1,793 Disposition fees (2) Carter/Validus Advisors, LLC and its affiliates 1,228 4,311 — Property management fees (3) Carter Validus Real Estate Management Services, LLC 1,831 5,056 5,425 Leasing commission fees (4) Carter Validus Real Estate Management Services, LLC 3,435 644 1,138 Construction management fees (5) Carter Validus Real Estate Management Services, LLC 137 524 986 Total $ 18,490 $ 30,850 $ 28,847 (1) Of the amounts incurred, $9,809,000 , $10,611,000 and $10,956,000 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. (2) Of the amounts incurred, $16,000 , $440,000 and $0 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. (3) Of the amounts incurred, $1,728,000 , $2,542,000 and $2,945,000 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. (4) Of the amounts incurred, $3,435,000 , $640,000 and $277,000 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. (5) Of the amounts incurred, $137,000 , $524,000 and $661,000 are included in continuing operations for the years ended December 31, 2018 , 2017 and 2016 , respectively. The following table details amounts payable to affiliates as of December 31, 2018 and 2017 in connection with the Company's operations-related services described above (amounts in thousands): Payable As of December 31, Fee Entity 2018 2017 Asset management fees Carter/Validus Advisors, LLC and its affiliates $ 801 $ 980 Operating expense reimbursement Carter/Validus Advisors, LLC and its affiliates 281 98 Disposition fees Carter/Validus Advisors, LLC and its affiliates — 440 Property management fees Carter Validus Real Estate Management Services, LLC 181 473 Leasing commission fees Carter Validus Real Estate Management Services, LLC 60 364 Construction management fees Carter Validus Real Estate Management Services, LLC 6 17 Total (1) $ 1,329 $ 2,372 (1) In addition, the Company had $12,000 and $175,000 due to affiliates included in liabilities of discontinued operations on the consolidated balance sheet as of December 31, 2018 and December 31, 2017 , respectively.

Future Minimum Rent (Tables)

Future Minimum Rent (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Schedule of Future Minimum Rental Income from Non-Cancelable Operating Leases	The future minimum rent to be received from the Company’s investments in real estate properties under non-cancelable operating leases as of December 31, 2018 , for each of the next five years ending December 31 and thereafter, are as follows (amounts in thousands): Year Amount 2019 $ 70,133 2020 77,681 2021 80,555 2022 83,267 2023 84,799 Thereafter 705,975 $ 1,102,410
Schedule of Future Minimum Rental Payments Under Non-Cancelable Ground Leases	The future minimum rent obligations under non-cancelable ground leases as of December 31, 2018 , for each of the next five years ended December 31 and thereafter, are as follows (amounts in thousands): Year Amount 2019 $ 698 2020 698 2021 698 2022 698 2023 701 Thereafter 33,550 $ 37,043

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets Measured on Recurring Basis	The following tables show the fair value of the Company’s financial assets that are required to be measured at fair value on a recurring basis as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 Fair Value Hierarchy Quoted Prices in Active Significant Other Significant Total Fair Assets: Derivative assets $ — $ 426 $ — $ 426 Total assets at fair value $ — $ 426 $ — $ 426 December 31, 2017 Fair Value Hierarchy Quoted Prices in Active Significant Other Significant Total Fair Assets: Derivative assets $ — $ 407 $ — $ 407 Total assets at fair value $ — $ 407 $ — $ 407
Schedule of Fair Value, Real Estate Assets Measured on Non-Recurring Basis	The following tables show the fair value of the Company's real estate assets measured at fair value on a non-recurring basis as of December 31, 2018 and 2017 (amounts in thousands): December 31, 2018 Fair Value Hierarchy Quoted Prices in Active Significant Other Significant Re-Measured Balance Total Losses Real estate assets (1) $ — $ 42,515 $ — $ 42,515 $ (6,588 ) December 31, 2017 Fair Value Hierarchy Quoted Prices in Active Significant Other Significant Re-Measured Balance Total Losses Real estate assets (2) $ — $ — $ 52,557 (3) $ 52,557 $ (33,211 ) (1) Amount represents the fair value of two real estate properties impacted by impairment charges during the year ended December 31, 2018 . The properties are classified as continuing operations as of December 31, 2018 . During the year ended December 31, 2018, the Company transferred $49,778,000 of real estate assets from Level 3 to Level 2. Transfers between these two hierarchy levels were based on the availability of sufficient observable inputs to meet Level 2 versus Level 3 criteria. Transfers between levels are reported at the beginning of the reporting period. (2) Amount represents the aggregate fair value of four real estate properties impacted by impairment charges as of December 31, 2017. (3) The fair values relating to impairment assessments were based on a discounted cash flow model and a market approach model to value real properties, using comparable properties adjusted for differences in characteristics to estimate the fair value. Projected cash flows are comprised of projected rental revenues and expenses based upon market conditions and expectations for growth. Terminal capitalization rates, discount rates, market rate per square foot and annual growth rates utilized in these models are based on a reasonable range of current market rates for each property analyzed. Based upon these inputs, the Company determined that its valuations of properties using a discounted cash flow model and a market approach model are classified within Level 3 of the fair value hierarchy.
Schedule of Fair Value, Quantitative Information of Unobservable Inputs of Level 3 Real Estate	The following table sets forth quantitative information about the unobservable inputs of the Company’s Level 3 real estate recorded as of December 31, 2017 : Unobservable Inputs December 31, 2017 Terminal capitalization rate 8.5% Discount rate 8.7% (1) The comparable sale price per square foot is used under the market approach.

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of the Notional Amount and Fair Value of Derivative Instruments	The following table summarizes the notional amount and fair value of the Company’s derivative instruments (amounts in thousands): Derivatives Balance Effective Maturity December 31, 2018 December 31, 2017 Outstanding Fair Value of Outstanding Fair Value of Asset Asset Interest rate swaps Other assets, net 08/03/2015 to 05/28/2019 to $ 55,923 $ 426 $ 121,066 $ 407
Schedule of Gains or Losses Recognized on Derivative Instruments	The table below summarizes the amount of income and loss recognized on interest rate derivatives designated as cash flow hedges for the years ended December 31, 2018 , 2017 and 2016 (amounts in thousands): Derivatives in Cash Flow Hedging Relationships Amount of Income (Loss) Recognized Location of Loss (Income) Amount of Income (Loss) For the Year Ended December 31, 2018 Interest rate swaps - continuing operations $ 617 Interest expense, net $ 599 Total $ 617 $ 599 For the Year Ended December 31, 2017 Interest rate swaps - continuing operations $ 1,310 Interest expense, net $ 3,353 Interest rate swaps - discontinued operations 752 Income from discontinued operations 125 Total $ 2,062 $ 3,478 For the Year Ended December 31, 2016 Interest rate swaps - continuing operations $ 1,045 Interest expense, net $ (2,764 ) Interest rate swaps - discontinued operations (1,562 ) Income from discontinued operations (2,156 ) Total $ (517 ) $ (4,920 )
Schedule of Offsetting of Derivative Positions	The following table presents the effect on the Company’s financial position had the Company made the election to offset its derivative positions as of December 31, 2018 and 2017 (amounts in thousands): Offsetting of Derivative Assets Gross Amounts Not Offset Gross Gross Amounts Net Amounts of Financial Cash Net December 31, 2018 $ 426 $ — $ 426 $ — $ — $ 426 December 31, 2017 $ 407 $ — $ 407 $ — $ — $ 407

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Schedule of Amounts Recognized in Accumulated Other Comprehensive Income	The following table presents a rollforward of amounts recognized in accumulated other comprehensive income (loss), net of noncontrolling interests, by component for the years ended December 31, 2018 , 2017 and 2016 (amounts in thousands): Unrealized Income (Loss) on Derivative Accumulated Other Balance as of December 31, 2015 $ (2,100 ) $ (2,580 ) Other comprehensive loss before reclassification (517 ) (517 ) Amount of loss reclassified from accumulated other comprehensive loss to net income (effective portion and missed forecast) 4,920 4,920 Other comprehensive income 4,403 4,403 Balance as of December 31, 2016 2,303 1,823 Other comprehensive income before reclassification 2,062 2,062 Amount of income reclassified from accumulated other comprehensive income to net income (effective portion and missed forecast) (3,478 ) (3,478 ) Other comprehensive loss (1,416 ) (1,416 ) Balance as of December 31, 2017 887 407 Other comprehensive income before reclassification 617 617 Amount of income reclassified from accumulated other comprehensive income to net loss (effective portion and missed forecast) (599 ) (599 ) Other comprehensive income 18 18 Balance as of December 31, 2018 $ 905 $ 425
Schedule of Reclassifications Out of Accumulated Other Comprehensive Income	The following table presents reclassifications out of accumulated other comprehensive income (loss) for the years ended December 31, 2018 , 2017 and 2016 (amounts in thousands): Details about Accumulated Other Amounts Reclassified from Affected Line Items in the Consolidated Statements of Comprehensive Income For the Year Ended 2018 2017 2016 Interest rate swap contracts - continuing operations $ (599 ) $ (3,353 ) $ 2,764 Interest expense, net Interest rate swap contracts - discontinued operations — (125 ) 2,156 Income from discontinued operations Interest rate swap contracts $ (599 ) $ (3,478 ) $ 4,920

Stock-based Compensation (Table

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Nonvested Shares of Restricted Common Stock Activity	A summary of the status of the nonvested shares of restricted common stock as of December 31, 2017 and the changes for the year ended December 31, 2018 is presented below: Restricted Stock Shares Nonvested at December 31, 2017 22,500 Vested (9,000 ) Granted 9,000 Nonvested at December 31, 2018 22,500

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Characterization of Distributions Paid to Stockholders	The following table shows the character of distributions the Company paid on a percentage basis during the years ended December 31, 2018 , 2017 and 2016 : For the Year Ended December 31, Character of Distributions: 2018 2017 2016 Ordinary dividends 2.85 % — % 45.45 % Capital gain distributions 5.07 % 100.00 % 3.20 % Nontaxable distributions 92.08 % — % 51.35 % Total 100.00 % 100.00 % 100.00 %

Selected Quarterly Financial _2

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of Selected Quarterly Financial Data (Unaudited)	The Company believes that all necessary adjustments, consisting only of normal recurring adjustments, have been included in the amounts stated below to present fairly, and in accordance with GAAP, the selected quarterly information (amounts in thousands, except share data and per share amounts): 2018 Fourth Third Second First Total revenue $ 20,149 $ 17,496 $ 17,182 $ 1,535 Total expenses (14,327 ) (13,865 ) (13,952 ) (35,895 ) Income (loss) from operations 5,822 3,631 3,230 (34,360 ) Other expense (3,760 ) (2,145 ) (9,586 ) (3,404 ) Income (loss) from continuing operations 2,062 1,486 (6,356 ) (37,764 ) (Loss) income from discontinued operations (9 ) 4,117 11,950 20,533 Net income (loss) 2,053 5,603 5,594 (17,231 ) Less: Net loss (income) attributable to noncontrolling interests in consolidated partnerships 7 (33 ) 48 — Net income (loss) attributable to common stockholders $ 2,060 $ 5,570 $ 5,642 $ (17,231 ) Net income (loss) per common share attributable to common stockholders: Basic: Continuing operations $ 0.01 $ 0.01 $ (0.04 ) $ (0.20 ) Discontinued operations — 0.02 0.07 0.11 Net income (loss) attributable to common stockholders $ 0.01 $ 0.03 $ 0.03 $ (0.09 ) Diluted: Continuing operations $ 0.01 $ 0.01 $ (0.04 ) $ (0.20 ) Discontinued operations — 0.02 0.07 0.11 Net income (loss) attributable to common stockholders $ 0.01 $ 0.03 $ 0.03 $ (0.09 ) Weighted average number of common shares outstanding: Basic 182,656,235 181,260,431 181,128,292 185,673,400 Diluted 182,678,735 181,282,589 181,128,292 185,673,400 2017 Fourth Third Second First Total revenue $ 22,984 $ 23,857 $ 25,877 $ 21,696 Total expenses (19,237 ) (15,263 ) (15,058 ) (14,849 ) Income from operations 3,747 8,594 10,819 6,847 Other expense (41,210 ) (12,286 ) (6,497 ) (7,052 ) (Loss) income from continuing operations (37,463 ) (3,692 ) 4,322 (205 ) Income from discontinued operations 231,964 10,636 8,886 10,189 Net income 194,501 6,944 13,208 9,984 Less: Net income attributable to noncontrolling interests in consolidated partnerships (44,308 ) (898 ) (1,039 ) (1,081 ) Net income attributable to common stockholders $ 150,193 $ 6,046 $ 12,169 $ 8,903 Net income per common share attributable to common stockholders: Basic: Continuing operations $ (0.21 ) $ (0.02 ) $ 0.03 $ — Discontinued operations 1.01 0.05 0.04 0.05 Net income attributable to common stockholders $ 0.80 $ 0.03 $ 0.07 $ 0.05 Diluted: Continuing operations $ (0.21 ) $ (0.02 ) $ 0.03 $ — Discontinued operations 1.01 0.05 0.04 0.05 Net income attributable to common stockholders $ 0.80 $ 0.03 $ 0.07 $ 0.05 Weighted average number of common shares outstanding: Basic 186,182,196 186,295,970 185,897,525 185,300,384 Diluted 186,182,196 186,295,970 185,911,968 185,300,384

Organization and Business Ope_2

Organization and Business Operations (Details) $ / shares in Units, $ in Thousands	Mar. 16, 2018USD ($)	Jan. 22, 2018$ / shares	Dec. 31, 2018USD ($)real_estate_investmentsegmentproperty$ / shares	Dec. 31, 2017property$ / shares	Dec. 31, 2016$ / shares
Organization and Business Operations [Line Items]
Number of properties sold			7	16
Number of real estate investments owned | real_estate_investment			30
Number of properties owned			61
Distributions declared per common share (in dollars per share) | $ / shares		$ 3	$ 3.49	$ 0.70	$ 0.70
Special cash distribution paid | $	$ 556,227		$ 556,227
Number of reportable business segments | segment			1
Data Centers [Member]
Organization and Business Operations [Line Items]
Number of properties sold			5	15
Healthcare [Member]
Organization and Business Operations [Line Items]
Number of properties sold			2	1

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Narrative) (Details)	Jan. 02, 2019USD ($)	Dec. 31, 2018USD ($)renewal_optionmetropolitanleasetenant$ / sharesshares	Oct. 22, 2018USD ($)	Aug. 21, 2018USD ($)	Jan. 22, 2018$ / shares	Dec. 28, 2017USD ($)	Dec. 31, 2018USD ($)intangible_assetmetropolitanleasesegmentpropertytenant$ / sharesshares	Dec. 31, 2017USD ($)intangible_assetproperty$ / sharesshares	Dec. 31, 2016USD ($)intangible_assettenant$ / sharesshares	Jan. 01, 2019	Dec. 31, 2015shares
Summary of Significant Accounting Policies [Line Items]
Number of properties with impaired real estate assets | property							2	4
Real estate carrying value		$ 879,337,000					$ 879,337,000	$ 908,188,000
Impairment loss on real estate							6,588,000	39,147,000	$ 0
Sale price of properties disposed							245,665,000	1,153,000,000
Acquired intangible asset, net of accumulated amortization		59,681,000					59,681,000	86,938,000
Acquired intangible liabilities, net of accumulated amortization		16,537,000					16,537,000	17,555,000
Number of tenants experiencing financial difficulties | tenant									2
Provision for doubtful accounts related to rental revenue							36,478,000	17,930,000	$ 24,628,000
Provision for doubtful accounts related to tenant reimbursement revenue							4,284,000	2,825,000	1,549,000
Notes receivable, including accrued interest receivable, net of allowances for loan losses		$ 2,700,000					2,700,000	20,138,000
Provision for loan losses							2,782,000	11,936,000	4,294,000
Net proceeds from the sale of equipment			$ 20,900,000				20,900,000	0	0
Impact related to uncertain tax positions from the results of operations							$ 0	$ 0	0
Number of metropolitan statistical areas in which Company owns real estate investments | metropolitan		32					32
Shares authorized | shares		350,000,000					350,000,000
Common stock, shares authorized | shares		300,000,000					300,000,000	300,000,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.01					$ 0.01	$ 0.01
Preferred stock, shares authorized | shares		50,000,000					50,000,000	50,000,000
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.01					$ 0.01	$ 0.01
Common stock, shares issued | shares		203,114,678					203,114,678	196,892,945
Common stock, shares outstanding | shares		183,081,839					183,081,839	186,181,545
Preferred stock, shares issued | shares		0					0	0
Preferred stock, shares outstanding | shares		0					0	0
Maximum number of shares available for repurchase during any calendar year, as percentage of common stock outstanding at end of prior year							5.00%
Period of notice required for changes to share repurchase program							30 days
Repurchase of common stock, percentage							5.00%	3.12%
Repurchase of common stock							$ 64,289,000	$ 57,049,000	$ 33,335,000
Repurchase of common stock, average price per share (in dollars per share) | $ / shares							$ 6.90	$ 9.88
Distributions declared per common share (in dollars per share) | $ / shares					$ 3		$ 3.49	$ 0.70	$ 0.70
Distributions payable to stockholders		$ 4,974,000					$ 4,974,000	$ 11,076,000
Common stock issued through distribution reinvestment plan							$ 41,819,000	$ 66,993,000	$ 68,086,000
Diluted earnings per share outstanding adjustment (in shares) | shares									18,000
Number of reportable business segments | segment							1
Parking revenue (% of consolidated revenue)		0.02%					0.02%
Number of ground lease obligations | lease		4					4
Capitalization of indirect leasing costs (less than) (% of total assets)		1.00%					1.00%
Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member]
Summary of Significant Accounting Policies [Line Items]
Operating lease, liability (less than) (% of total liabilities)										5.00%
Operating lease, right-of-use asset (less than) (% of total assets)										1.00%
December 1, 2018 To December 31, 2018 [Member] | Subsequent Event [Member]
Summary of Significant Accounting Policies [Line Items]
Distributions paid in cash	$ 2,691,000
Common stock issued through distribution reinvestment plan	$ 2,283,000
Common Stock [Member]
Summary of Significant Accounting Policies [Line Items]
Common stock, shares outstanding | shares		183,081,839					183,081,839	186,181,545	184,909,673		181,200,952
Repurchase of common stock (in shares) | shares							9,321,438	5,772,909	3,431,543
Repurchase of common stock							$ 93,000	$ 58,000	$ 34,000
Common stock issued through distribution reinvestment plan							$ 62,000	$ 71,000	$ 71,000
Revenues from Continuing Operations [Member] | Healthcare [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration risk, percentage							100.00%	100.00%	100.00%
Revenues from Continuing Operations [Member] | Geographic Concentration Risk [Member]
Summary of Significant Accounting Policies [Line Items]
Number of metropolitan statistical areas in which Company owns real estate investments | metropolitan		2					2
Revenues from Continuing Operations [Member] | Geographic Concentration Risk [Member] | San Antonio - New Braunfels, Texas MSA [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration risk, percentage							11.60%
Revenues from Continuing Operations [Member] | Geographic Concentration Risk [Member] | Dallas-Fort Worth-Arlington, Texas MSA [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration risk, percentage							10.40%
Revenues from Continuing Operations [Member] | Customer Concentration Risk [Member]
Summary of Significant Accounting Policies [Line Items]
Number of tenants | tenant		2					2
UTMB Health Clear Lake Campus [Member] | Board of Regents of the University of Texas System [Member]
Summary of Significant Accounting Policies [Line Items]
Term of lease		15 years					15 years
Number of lease term renewal options | renewal_option		3
Term of lease renewal		5 years					5 years
Term of fixed base rent payments		5 years
Bay Area Regional Medical Center, LLC [Member]
Summary of Significant Accounting Policies [Line Items]
Acquired intangible asset, net of accumulated amortization		$ 0					$ 0
Acquired intangible liabilities, net of accumulated amortization		0					0
Provision for doubtful accounts related to rental revenue							33,242,000
Provision for doubtful accounts related to tenant reimbursement revenue							3,634,000
Provision for loan losses							$ 1,810,000
Note receivable, outstanding principal balance				$ 20,000,000
Bay Area Regional Medical Center, LLC [Member] | Receipt of Assets in Satisfaction of Debt [Member]
Summary of Significant Accounting Policies [Line Items]
Equipment held for sale, fair value				21,000,000
Costs to sell equipment held for sale				100,000
Income on exchange of assets				$ 900,000
Post Acute Medical LLC [Member] | Revenues from Continuing Operations [Member] | Customer Concentration Risk [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration risk, percentage							20.20%
21st Century Oncology, Inc [Member] | Revenues from Continuing Operations [Member] | Customer Concentration Risk [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration risk, percentage							12.50%
In-place leases [Member]
Summary of Significant Accounting Policies [Line Items]
Number of impaired intangible assets | intangible_asset							2	3	1
Impairment of intangible asset							$ 21,505,000	$ 1,151,000
Acquired intangible asset, net of accumulated amortization		56,501,000					56,501,000	83,139,000
In-place leases [Member] | Bay Area Regional Medical Center, LLC [Member]
Summary of Significant Accounting Policies [Line Items]
Impairment of intangible asset							$ 21,296,000
Above-market leases [Member]
Summary of Significant Accounting Policies [Line Items]
Number of impaired intangible assets | intangible_asset							1
Impairment of intangible asset							$ 311,000
Acquired intangible asset, net of accumulated amortization		2,139,000					2,139,000	$ 2,747,000
Capitalized lease commissions [Member]
Summary of Significant Accounting Policies [Line Items]
Number of impaired intangible assets | intangible_asset									1
In-place leases and capitalized lease commissions [Member]
Summary of Significant Accounting Policies [Line Items]
Impairment of intangible asset									$ 16,422,000
Continuing Operations, Disposed of by Sale [Member]
Summary of Significant Accounting Policies [Line Items]
Number of properties with impaired real estate assets | property								1
Impairment loss on real estate								$ 5,936,000
Sale price of properties disposed						$ 88,000,000	3,165,000
Continuing Operations, Disposed of by Sale [Member] | Healthcare [Member]
Summary of Significant Accounting Policies [Line Items]
Impairment loss on real estate								5,936,000
Non-recurring [Member] | Level 2 [Member]
Summary of Significant Accounting Policies [Line Items]
Real estate carrying value		49,103,000					49,103,000
Impairment loss on real estate							6,588,000
Non-recurring [Member] | Level 3 [Member]
Summary of Significant Accounting Policies [Line Items]
Real estate carrying value								85,768,000
Impairment loss on real estate								33,211,000
Real Estate [Member] | Non-recurring [Member]
Summary of Significant Accounting Policies [Line Items]
Assets, fair value		42,515,000					42,515,000	52,557,000
Real Estate [Member] | Non-recurring [Member] | Level 2 [Member]
Summary of Significant Accounting Policies [Line Items]
Assets, fair value		42,515,000					42,515,000	0
Real Estate [Member] | Non-recurring [Member] | Level 3 [Member]
Summary of Significant Accounting Policies [Line Items]
Assets, fair value		$ 0					$ 0	$ 52,557,000

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Reconciliation of Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Cash and cash equivalents	$ 43,133	$ 336,500	$ 42,613	$ 28,527
Restricted cash	168	15,414	14,992	14,543
Cash, cash equivalents and restricted cash	$ 43,301	$ 351,914	$ 57,605	$ 43,070

Summary of Significant Accoun_6

Summary of Significant Accounting Policies (Schedule of Estimated Useful Lives of Assets by Class) (Details)	12 Months Ended
	Dec. 31, 2018
Building and improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	15 years
Building and improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Furniture, fixtures, and equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Furniture, fixtures, and equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years

Dispositions (Narrative) (Detai

Dispositions (Narrative) (Details) $ in Thousands	Dec. 28, 2017USD ($)	Dec. 31, 2018USD ($)property	Dec. 31, 2017USD ($)property	Dec. 31, 2016USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property		7	16
Sale price of properties disposed		$ 245,665	$ 1,153,000
Proceeds from real estate disposals of continuing and discontinued operations		241,043	1,131,582	$ 0
Gain on real estate dispositions from discontinued operations		33,251	224,133	0
Gain on real estate dispositions from continuing operations		218	0	0
Impairment loss on real estate		6,588	39,147	$ 0
Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale price of properties disposed		242,500
Proceeds from real estate disposals of continuing and discontinued operations		238,064
Continuing Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale price of properties disposed	$ 88,000	3,165
Proceeds from real estate disposals of continuing and discontinued operations		$ 2,979
Impairment loss on real estate			$ 5,936
Data Centers [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property		5	15
Data Centers [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property		5	15
Healthcare [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property		2	1
Healthcare [Member] | Continuing Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property		2	1
Impairment loss on real estate			$ 5,936

Dispositions (Schedule of Dispo

Dispositions (Schedule of Dispositions - Discontinued Operations) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)property	Dec. 31, 2017USD ($)property	Dec. 31, 2016USD ($)	Jan. 03, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Price	$ 245,665	$ 1,153,000
Net Proceeds	$ 241,043	$ 1,131,582	$ 0
Number of properties sold | property	7	16
Ownership Percentage by Unaffiliated Investors				79.47%
Carter/Validus Operating Partnership, LP [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership Percentage by Noncontrolling Owners				20.53%
Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Price	$ 242,500
Net Proceeds	$ 238,064
Arizona Data Center Portfolio [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date	Jan. 10, 2018
Ownership Percentage	100.00%
Sale Price	$ 142,500
Net Proceeds	$ 140,176
Number of properties sold | property	2
Milwaukee Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date	Jun. 11, 2018
Ownership Percentage	100.00%
Sale Price	$ 21,000
Net Proceeds	$ 20,397
Alpharetta Data Center II [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date	Jun. 15, 2018
Ownership Percentage	100.00%
Sale Price	$ 64,000
Net Proceeds	$ 62,858
Andover Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date	Jul. 25, 2018
Ownership Percentage	100.00%
Sale Price	$ 15,000
Net Proceeds	$ 14,633
Chicago Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 14, 2017
Ownership Percentage		100.00%
Sale Price		$ 315,000
Net Proceeds		310,396
Mapletree Portfolio [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Price		750,000
Net Proceeds		$ 733,687
Number of properties sold | property		14
Richardson Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
180 Peachtree Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		20.53%
Northwoods Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
Southfield Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
Plano Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
Arlington Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
Philadelphia Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
Raleigh Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
Leonia Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
AT&T Wisconsin Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
AT&T Tennessee Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
AT&T California Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
Charlotte Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%
Alpharetta Data Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		Dec. 20, 2017
Ownership Percentage		100.00%

Dispositions (Schedule of Dis_2

Dispositions (Schedule of Dispositions - Continuing Operations) (Details) - USD ($) $ in Thousands	Dec. 28, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 27, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Price		$ 245,665	$ 1,153,000
Net Proceeds		241,043	1,131,582	$ 0
Net book value, total		879,337	908,188
Land		72,700	73,769
Building and improvements, net		806,637	834,419
Impairment loss on real estate		6,588	39,147	$ 0
Continuing Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Price	$ 88,000	3,165
Net Proceeds		$ 2,979
Impairment loss on real estate			$ 5,936
21st Century Oncology-Tamarac [Member] | Continuing Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		May 25, 2018
Ownership Percentage		100.00%
Sale Price		$ 1,575
Net Proceeds		$ 1,431
21st Century Oncology-East Naples [Member] | Continuing Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date		May 30, 2018
Ownership Percentage		100.00%
Sale Price		$ 1,590
Net Proceeds		$ 1,548
Miami International Medical Center [Member] | Continuing Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition Date			Dec. 28, 2017
Ownership Percentage			100.00%
Sale Price			$ 88,000
Net Proceeds			87,499
Net book value, total					$ 93,435
Land					8,694
Building and improvements, net					$ 84,741
Impairment loss on real estate			$ 5,936

Discontinued Operations (Narrat

Discontinued Operations (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
Capital expenditures attributable to discontinued operations	$ 0	$ 2,264	$ 31,791

Discontinued Operations (Schedu

Discontinued Operations (Schedule of Discontinued Operations - Major Classes of Assets and Liabilities of Discontinued Operations) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets:
Land	$ 0	$ 21,710
Buildings and improvements, net	0	168,557
Total real estate, net	0	190,267
Acquired intangible assets, net	0	9,617
Other assets, net	401	13,949
Assets of discontinued operations, net	401	213,833
Liabilities:
Accounts payable due to affiliates	12	175
Accounts payable and other liabilities	1	3,847
Intangible lease liabilities, net	0	1,036
Liabilities of discontinued operations, net	$ 13	$ 5,058

Discontinued Operations (Sche_2

Discontinued Operations (Schedule of Discontinued Operations - Operations of Discontinued Operations) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Rental and parking revenue									$ 3,916	$ 102,274	$ 102,663
Tenant reimbursement revenue									162	14,009	14,300
Total revenue									4,078	116,283	116,963
Rental and parking expenses									416	20,754	20,159
Change in fair value of contingent consideration									0	(2,920)	300
Asset management fees									322	8,106	8,549
Depreciation and amortization									0	32,210	38,744
Total expenses									738	58,150	67,752
Interest expense, net									0	(20,591)	(14,532)
Total other expense									0	(20,591)	(14,532)
Income from discontinued operations before real estate dispositions and noncontrolling interest									3,340	37,542	34,679
Gain on real estate dispositions									33,251	224,133	0
Net income from discontinued operations	$ (9)	$ 4,117	$ 11,950	$ 20,533	$ 231,964	$ 10,636	$ 8,886	$ 10,189	36,591	261,675	34,679
Net loss (income) from discontinued operations attributable to noncontrolling interests in consolidated partnerships									22	(47,326)	(3,921)
Net income from discontinued operations attributable to common stockholders									$ 36,613	$ 214,349	$ 30,758

Acquired Intangible Assets, N_3

Acquired Intangible Assets, Net (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Depreciation and amortization	$ 51,001	$ 33,540	$ 47,591
In-place leases, Ground lease interest and Above-market leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Depreciation and amortization	27,257	7,737	$ 21,446
In-place leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Impairment of intangible asset	21,505	$ 1,151
In-place leases [Member] | Bay Area Regional Medical Center, LLC [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Impairment of intangible asset	21,296
In-place leases and Above-market leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Impairment of intangible asset	$ 520

Acquired Intangible Assets, N_4

Acquired Intangible Assets, Net (Schedule of Acquired Intangible Assets, Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible asset, net of accumulated amortization	$ 59,681	$ 86,938
Acquired intangible asset, accumulated amortization	$ 23,822	$ 23,640
Acquired intangible asset, weighted average remaining life	14 years 9 months 18 days	15 years 9 months 18 days
In-place leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible asset, net of accumulated amortization	$ 56,501	$ 83,139
Acquired intangible asset, accumulated amortization	$ 22,679	$ 22,519
Acquired intangible asset, weighted average remaining life	13 years 9 months 18 days	15 years 1 month 6 days
Above-market leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible asset, net of accumulated amortization	$ 2,139	$ 2,747
Acquired intangible asset, accumulated amortization	$ 1,079	$ 1,068
Acquired intangible asset, weighted average remaining life	8 years 6 months	9 years 3 months 18 days
Ground lease interest [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible asset, net of accumulated amortization	$ 1,041	$ 1,052
Acquired intangible asset, accumulated amortization	$ 64	$ 53
Acquired intangible asset, weighted average remaining life	86 years 7 months 6 days	87 years 7 months 6 days

Acquired Intangible Assets, N_5

Acquired Intangible Assets, Net (Schedule of Estimated Future Amortization Expense of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2019	$ 5,098
2020	5,098
2021	5,098
2022	5,098
2023	4,933
Thereafter	34,356
Total	$ 59,681	$ 86,938

Intangible Lease Liabilities,_3

Intangible Lease Liabilities, Net (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Intangible Lease Liabilities, Net [Abstract]
Amortization of intangible liabilities	$ 1,018	$ 1,112	$ 1,078

Intangible Lease Liabilities,_4

Intangible Lease Liabilities, Net (Schedule of Intangible Lease Liabilities, Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Intangible Lease Liabilities, Net [Abstract]
Below-market leases, net of accumulated amortization of $5,163 and $4,269, respectively (with a weighted average remaining life of 16.2 years and 17.2 years, respectively)	$ 11,761	$ 12,655
Ground leasehold liabilities, net of accumulated amortization of $549 and $425, respectively (with a weighted average remaining life of 40.2 years and 41.2 years, respectively)	4,776	4,900
Total intangible lease liabilities, net	16,537	17,555
Below-market leases, accumulated amortization	$ 5,163	$ 4,269
Below-market leases, weighted average remaining life	16 years 2 months 12 days	17 years 2 months 12 days
Ground leasehold liabilities, accumulated amortization	$ 549	$ 425
Ground leasehold liabilities, weighted average remaining life	40 years 2 months 12 days	41 years 2 months 12 days
Intangible lease liabilities, weighted average remaining life	22 years 10 months 24 days	23 years 10 months 24 days

Intangible Lease Liabilities,_5

Intangible Lease Liabilities, Net (Schedule of Estimated Future Amortization Income of Intangible Lease Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Intangible Lease Liabilities, Net [Abstract]
2019	$ 1,018
2020	1,014
2021	1,013
2022	1,013
2023	997
Thereafter	11,482
Total intangible lease liabilities, net	$ 16,537	$ 17,555

Other Assets, Net (Narrative) (

Other Assets, Net (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Assets [Abstract]
Amortization of deferred financing costs related to the revolver portion of the unsecured credit facility	$ 2,065	$ 1,595	$ 2,143
Amortization of lease commissions	$ 160	$ 59	$ 99

Other Assets, Net (Schedule of

Other Assets, Net (Schedule of Other Assets, Net) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Assets [Abstract]
Deferred financing costs related to the revolver portion of the unsecured credit facility, net of accumulated amortization of $9,493 and $7,428, respectively	$ 951	$ 762
Lease commissions, net of accumulated amortization of $223 and $63, respectively	6,089	1,266
Investments in unconsolidated partnerships	0	965
Tenant receivables, net of allowances for doubtful accounts of $0 and $9,125, respectively	2,039	7,878
Notes receivable, net of allowances for loan losses of $0 and $10,615, respectively	2,700	20,138
Straight-line rent receivable	26,947	36,348
Restricted cash	168	10,168
Derivative assets	426	407
Prepaid and other assets	1,644	1,208
Total other assets, net	40,964	79,140
Deferred financing costs related to the revolver portion of the unsecured credit facility, accumulated amortization	9,493	7,428
Lease commissions, accumulated amortization	223	63
Tenant receivables, allowances for doubtful accounts	0	9,125
Notes receivable, allowances for loan losses	$ 0	$ 10,615

Accounts Payable and Other Li_3

Accounts Payable and Other Liabilities (Schedule of Accounts Payable and Other Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Accounts payable and accrued expenses	$ 2,912	$ 4,203
Accrued interest expense	890	1,558
Accrued property taxes	4,502	4,758
Distributions payable to stockholders	4,974	11,076
Tenant deposits	624	778
Deferred rental income	2,801	5,822
Accounts payable and other liabilities	$ 16,703	$ 28,195

Notes Payable (Narrative) (Deta

Notes Payable (Narrative) (Details) $ in Thousands	Oct. 11, 2018USD ($)loan	May 04, 2018USD ($)	Feb. 28, 2018USD ($)loan	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Number of notes payable repaid | loan	1		1
Notes payable, principal amount outstanding				$ 36,289	$ 141,477
Notes payable, weighted average interest rate				5.20%
Payments on notes payable	$ 5,717		$ 12,340	$ 105,188	345,335	$ 56,521
Gain on early extinguishment of hedged debt obligation					4,637
Interest Expense, Net [Member]
Debt Instrument [Line Items]
Gain on early extinguishment of hedged debt obligation				$ 381	$ 3,755
Bay Area Regional Medical Center [Member]
Debt Instrument [Line Items]
Notes payable, outstanding principal balance at repayment		$ 84,667
Bay Area Regional Medical Center [Member] | Interest Expense, Net [Member]
Debt Instrument [Line Items]
Write off of unamortized deferred financing costs		545
Termination fees for debt extinguishment		43
Gain on early extinguishment of hedged debt obligation		$ 381

Notes Payable (Schedule of Note

Notes Payable (Schedule of Notes Payable) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Notes payable, principal amount outstanding	$ 36,289	$ 141,477
Unamortized deferred financing costs related to notes payable	(75)	(875)
Notes payable, net of deferred financing costs	36,214	140,602
Fixed Rate [Member]
Debt Instrument [Line Items]
Notes payable, principal amount outstanding	0	18,212
Variable Rate Debt, Subject To Interest Rate Swap [Member]
Debt Instrument [Line Items]
Notes payable, principal amount outstanding	$ 17,923	121,066
Interest Rate	4.80%
Maturity Date	Oct. 11, 2022
Variable Rate [Member]
Debt Instrument [Line Items]
Notes payable, principal amount outstanding	$ 18,366	$ 2,199
Interest Rate	5.60%
Maturity Date	Jan. 26, 2019

Notes Payable (Schedule of Futu

Notes Payable (Schedule of Future Principal Payments Due on Notes Payable) (Details) - USD ($) $ in Thousands	Jan. 25, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
2019		$ 18,768
2020		421
2021		444
2022		16,656
Total		36,289
Note Payable One [Member]
Debt Instrument [Line Items]
2019		$ 18,366
Note Payable One [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Notes payable, maturity date	Jan. 25, 2019

Unsecured Credit Facility (Narr

Unsecured Credit Facility (Narrative) (Details) - USD ($)	Mar. 16, 2018	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Unsecured credit facility, maximum commitments available		$ 400,000,000	$ 400,000,000
Unsecured credit facility, maturity date		May 28, 2019
Unsecured credit facility, available extension period		12 months
Unsecured credit facility, maximum commitments available after available increase		$ 750,000,000	$ 750,000,000
Unsecured credit facility, threshold percentage for unused portion of lenders' commitments			50.00%
Total unsecured credit facility		$ 190,000,000	$ 190,000,000	$ 0
Special cash distribution paid	$ 556,227,000		556,227,000
Unsecured credit facility, draws	$ 195,000,000		285,000,000	121,000,000	$ 185,000,000
Unsecured credit facility, repayments			95,000,000	$ 479,000,000	$ 120,000,000
Bay Area Regional Medical Center [Member]
Line of Credit Facility [Line Items]
Unsecured credit facility, draws			$ 90,000,000
Minimum [Member]
Line of Credit Facility [Line Items]
Unsecured credit facility, unused portion, commitment fee percentage			0.15%
Maximum [Member]
Line of Credit Facility [Line Items]
Unsecured credit facility, unused portion, commitment fee percentage			0.25%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Unsecured credit facility, basis spread on variable rate			1.75%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Unsecured credit facility, basis spread on variable rate			2.25%
Base Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Unsecured credit facility, basis spread on variable rate			0.75%
Base Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Unsecured credit facility, basis spread on variable rate			1.25%

Unsecured Credit Facility (Sche

Unsecured Credit Facility (Schedule of Unsecured Credit Facility) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Total unsecured credit facility	$ 190,000	$ 0
Variable Rate Debt, Subject To Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Total unsecured credit facility	$ 38,000
Interest Rate	3.10%
Variable Rate [Member]
Line of Credit Facility [Line Items]
Total unsecured credit facility	$ 152,000
Interest Rate	4.10%

Related-Party Transactions an_3

Related-Party Transactions and Arrangements (Narrative) (Details)	Dec. 31, 2018USD ($)employee	Dec. 31, 2018USD ($)employeeproperty	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Related Party Transaction [Line Items]
Number of direct employees | employee	0	0
Annual cumulative, non-compounded return on capital threshold to investors		8.00%
Expenses from transactions with related party		$ 18,490,000	$ 30,850,000	$ 28,847,000
Maximum [Member]
Related Party Transaction [Line Items]
Disposition fee (% of contract sales price)		6.00%
Carter/Validus Advisors, LLC [Member]
Related Party Transaction [Line Items]
Annual asset management fee (% of aggregate asset value)		0.85%
Monthly asset management fee (% of aggregate asset value)		0.07083%
Subordinated participation in net sale proceeds, percentage		15.00%
Subordinated incentive listing fee, percentage		15.00%
Subordinated termination fee, percentage		15.00%
Carter Validus Real Estate Management Services, LLC [Member]
Related Party Transaction [Line Items]
Property management fees (% of gross revenues from single-tenant properties managed)		3.00%
Property management fees (% of gross revenues from multi-tenant properties managed)		4.00%
Oversight fee (% of gross revenues from properties managed)		1.00%
Carter Validus Real Estate Management Services, LLC [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Construction management fee (% of cost of project)		5.00%
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member]
Related Party Transaction [Line Items]
Minimum number of assets required to be sold for related party to receive disposition fee | property		1
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Subordinated Participation In Net Sale Proceeds [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	$ 0
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Subordinated Incentive Listing Fee [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	0
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Subordinated Termination Fee [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	$ 0
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Disposition fee (% of contract sales price)		0.50%
Disposition fee (% of third party investment banker fees)		50.00%

Related-Party Transactions An_4

Related-Party Transactions And Arrangements (Schedule of Related-Party Transactions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Incurred	$ 18,490	$ 30,850	$ 28,847
Payable	1,329	2,372
Accounts payable due to affiliates - discontinued operations	12	175
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Asset Management Fees [Member]
Related Party Transaction [Line Items]
Incurred	10,131	18,717	19,505
Payable	801	980
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Asset Management Fees [Member] | Continuing Operations [Member]
Related Party Transaction [Line Items]
Incurred	9,809	10,611	10,956
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Operating Expense Reimbursement [Member]
Related Party Transaction [Line Items]
Incurred	1,728	1,598	1,793
Payable	281	98
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Disposition Fees [Member]
Related Party Transaction [Line Items]
Incurred	1,228	4,311	0
Payable	0	440
Carter/Validus Advisors, LLC And/Or Its Affiliates [Member] | Disposition Fees [Member] | Continuing Operations [Member]
Related Party Transaction [Line Items]
Incurred	16	440	0
Carter Validus Real Estate Management Services, LLC [Member] | Property Management Fees [Member]
Related Party Transaction [Line Items]
Incurred	1,831	5,056	5,425
Payable	181	473
Carter Validus Real Estate Management Services, LLC [Member] | Property Management Fees [Member] | Continuing Operations [Member]
Related Party Transaction [Line Items]
Incurred	1,728	2,542	2,945
Carter Validus Real Estate Management Services, LLC [Member] | Leasing Commission Fees [Member]
Related Party Transaction [Line Items]
Incurred	3,435	644	1,138
Payable	60	364
Carter Validus Real Estate Management Services, LLC [Member] | Leasing Commission Fees [Member] | Continuing Operations [Member]
Related Party Transaction [Line Items]
Incurred	3,435	640	277
Carter Validus Real Estate Management Services, LLC [Member] | Construction Management Fees [Member]
Related Party Transaction [Line Items]
Incurred	137	524	986
Payable	6	17
Carter Validus Real Estate Management Services, LLC [Member] | Construction Management Fees [Member] | Continuing Operations [Member]
Related Party Transaction [Line Items]
Incurred	$ 137	$ 524	$ 661

Future Minimum Rent (Narrative)

Future Minimum Rent (Narrative) (Details)	Dec. 31, 2018lease
Leases [Abstract]
Number of ground lease obligations	4
Number of ground lease obligations paid directly by tenant	1

Future Minimum Rent (Schedule o

Future Minimum Rent (Schedule of Future Minimum Rental Income from Non-Cancelable Operating Leases) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 70,133
2020	77,681
2021	80,555
2022	83,267
2023	84,799
Thereafter	705,975
Total	$ 1,102,410

Future Minimum Rent (Schedule_2

Future Minimum Rent (Schedule of Future Minimum Rental Payments Under Non-Cancelable Ground Leases) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 698
2020	698
2021	698
2022	698
2023	701
Thereafter	33,550
Total	$ 37,043

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)property	Dec. 31, 2017USD ($)property
Fair Value [Line Items]
Notes payable, principal amount outstanding	$ 36,289	$ 141,477
Unsecured credit facility, principal amount outstanding	190,000
Notes receivable, including accrued interest receivable, net of allowances for loan losses	$ 2,700	$ 20,138
Number of properties with impaired real estate assets | property	2	4
Real estate carrying value	$ 879,337	$ 908,188
Non-recurring [Member] | Real estate assets [Member]
Fair Value [Line Items]
Assets, fair value	42,515	52,557
Significant Other Observable Inputs (Level 2) [Member] | Non-recurring [Member]
Fair Value [Line Items]
Real estate carrying value	49,103
Significant Other Observable Inputs (Level 2) [Member] | Non-recurring [Member] | Real estate assets [Member]
Fair Value [Line Items]
Assets, fair value	42,515	0
Significant Unobservable Inputs (Level 3) [Member] | Non-recurring [Member]
Fair Value [Line Items]
Real estate carrying value		85,768
Significant Unobservable Inputs (Level 3) [Member] | Non-recurring [Member] | Real estate assets [Member]
Fair Value [Line Items]
Assets, fair value	0	52,557
Fixed Rate [Member]
Fair Value [Line Items]
Notes payable, principal amount outstanding	0	18,212
Fixed Rate [Member] | Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value [Line Items]
Notes payable, fair value disclosure	0	18,189
Variable Rate Debt, Subject To Interest Rate Swap [Member]
Fair Value [Line Items]
Notes payable, principal amount outstanding	17,923	121,066
Unsecured credit facility, principal amount outstanding	38,000	0
Variable Rate Debt, Subject To Interest Rate Swap [Member] | Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value [Line Items]
Notes payable, fair value disclosure	17,465	120,051
Unsecured credit facility, fair value disclosure	37,794	0
Variable Rate [Member]
Fair Value [Line Items]
Notes payable, principal amount outstanding	18,366	2,199
Unsecured credit facility, principal amount outstanding	$ 152,000	$ 0

Fair Value (Schedule of Fair Va

Fair Value (Schedule of Fair Value, Assets Measured on Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets:
Derivative assets	$ 426	$ 407
Recurring Basis [Member]
Assets:
Derivative assets	426	407
Total assets at fair value	426	407
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring Basis [Member]
Assets:
Derivative assets	0	0
Total assets at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Recurring Basis [Member]
Assets:
Derivative assets	426	407
Total assets at fair value	426	407
Significant Unobservable Inputs (Level 3) [Member] | Recurring Basis [Member]
Assets:
Derivative assets	0	0
Total assets at fair value	$ 0	$ 0

Fair Value (Schedule of Fair _2

Fair Value (Schedule of Fair Value, Real Estate Assets Measured on Non-Recurring Basis) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)property	Dec. 31, 2017USD ($)property
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of properties with impaired real estate assets | property	2	4
Transfers out of Level 3	$ 49,778
Real estate assets [Member] | Non-recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Re-Measured Balance	42,515	$ 52,557
Total Losses	(6,588)	(33,211)
Real estate assets [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Non-recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Re-Measured Balance	0	0
Real estate assets [Member] | Significant Other Observable Inputs (Level 2) [Member] | Non-recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Re-Measured Balance	42,515	0
Real estate assets [Member] | Significant Unobservable Inputs (Level 3) [Member] | Non-recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Re-Measured Balance	$ 0	$ 52,557

Fair Value (Schedule of Fair _3

Fair Value (Schedule of Fair Value, Quantitative Information of Unobservable Inputs of Level 3 Real Estate) (Details) - Significant Unobservable Inputs (Level 3) [Member]	Dec. 31, 2017
Terminal capitalization rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate assets, measurement input	0.085
Discount rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate assets, measurement input	0.087

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Gain (loss) recognized due to ineffectiveness of hedges of interest rate risk	$ 1,000	$ 0	$ 0
Gain on early extinguishment of hedged debt obligation		4,637,000
Additional amount expected to be reclassified from AOCI into earnings during next twelve months	274,000
Fair value of derivatives in a net liability position	0
Interest Expense, Net [Member]
Derivative [Line Items]
Gain on early extinguishment of hedged debt obligation	$ 381,000	3,755,000
Loss on discontinuation of cash flow hedge due to forecasted transaction probable of not occurring			$ 728,000
Income from Discontinued Operations [Member]
Derivative [Line Items]
Gain on early extinguishment of hedged debt obligation		$ 882,000

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities (Schedule of the Notional Amount and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Fair Value of Asset	$ 426	$ 407
Interest Rate Swaps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Outstanding Notional Amount	55,923	121,066
Other Assets, Net [Member] | Interest Rate Swaps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Asset	$ 426	$ 407
Minimum [Member] | Interest Rate Swaps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Effective Dates	Aug. 3, 2015
Maturity Dates	May 28, 2019
Maximum [Member] | Interest Rate Swaps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Effective Dates	Oct. 11, 2017
Maturity Dates	Oct. 11, 2022

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities (Schedule of Gains or Losses Recognized on Derivative Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ 617	$ 2,062	$ (517)
Amount of Income (Loss) Reclassified from Accumulated Other Comprehensive Income to Net Income (Effective Portion and Accelerated Amounts)	599	3,478	(4,920)
Interest Rate Swaps [Member] | Continuing Operations [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in OCI on Derivatives (Effective Portion)	617	1,310	1,045
Interest Rate Swaps [Member] | Continuing Operations [Member] | Interest Expense, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Reclassified from Accumulated Other Comprehensive Income to Net Income (Effective Portion and Accelerated Amounts)	$ 599	3,353	(2,764)
Interest Rate Swaps [Member] | Discontinued Operations [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in OCI on Derivatives (Effective Portion)		752	(1,562)
Interest Rate Swaps [Member] | Discontinued Operations [Member] | Income from Discontinued Operations [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Reclassified from Accumulated Other Comprehensive Income to Net Income (Effective Portion and Accelerated Amounts)		$ 125	$ (2,156)

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities (Schedule of Offsetting of Derivative Positions) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross Amounts of Recognized Assets	$ 426	$ 407
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	426	407
Gross Amounts Not Offset in the Balance Sheet, Financial Instruments Collateral	0	0
Gross Amounts Not Offset in the Balance Sheet, Cash Collateral	0	0
Net Amount	$ 426	$ 407

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Schedule of Amounts Recognized in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,425,848
Ending Balance	762,720	$ 1,425,848
Unrealized Income (Loss) On Derivative Instruments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	887	2,303	$ (2,100)
Other comprehensive income (loss) before reclassification	617	2,062	(517)
Amount of (income) loss reclassified from accumulated other comprehensive income (loss) to net income (loss) (effective portion and missed forecast)	(599)	(3,478)	4,920
Other comprehensive income (loss)	18	(1,416)	4,403
Ending Balance	905	887	2,303
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	407	1,823	(2,580)
Other comprehensive income (loss) before reclassification	617	2,062	(517)
Amount of (income) loss reclassified from accumulated other comprehensive income (loss) to net income (loss) (effective portion and missed forecast)	(599)	(3,478)	4,920
Other comprehensive income (loss)	18	(1,416)	4,403
Ending Balance	$ 425	$ 407	$ 1,823

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Schedule of Reclassifications Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Loss [Line Items]
Interest expense, net									$ 13,506	$ 19,109	$ 23,323
Income from discontinued operations	$ 9	$ (4,117)	$ (11,950)	$ (20,533)	$ (231,964)	$ (10,636)	$ (8,886)	$ (10,189)	(36,591)	(261,675)	(34,679)
Net income (loss)	$ (2,053)	$ (5,603)	$ (5,594)	$ 17,231	$ (194,501)	$ (6,944)	$ (13,208)	$ (9,984)	3,981	(224,637)	(35,157)
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized Income (Loss) On Derivative Instruments [Member] | Interest Rate Swaps [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Loss [Line Items]
Net income (loss)									(599)	(3,478)	4,920
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized Income (Loss) On Derivative Instruments [Member] | Interest Rate Swaps [Member] | Continuing Operations [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Loss [Line Items]
Interest expense, net									(599)	(3,353)	2,764
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized Income (Loss) On Derivative Instruments [Member] | Interest Rate Swaps [Member] | Discontinued Operations [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Loss [Line Items]
Income from discontinued operations									$ 0	$ (125)	$ 2,156

Stock-based Compensation (Narra

Stock-based Compensation (Narrative) (Details) - 2010 Restricted Share Plan [Member] - Restricted Stock [Member] - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of authorized and reserved shares of common stock under plan	300,000
Award vesting period under plan	4 years
Number of shares awarded to independent board members upon re-election	9,000
Grant date fair value, per share (in dollars per share)	$ 6.26
Unrecognized compensation expense	$ 151,000	$ 180,000
Unrecognized compensation expense, weighted average period of recognition	2 years 18 days
Fair value of nonvested shares of restricted common stock	$ 119,925	208,350
Stock-based compensation expense	$ 86,000	$ 88,000	$ 90,000

Stock-based Compensation (Sched

Stock-based Compensation (Schedule of Nonvested Shares of Restricted Common Stock Activity) (Details) - 2010 Restricted Share Plan [Member] - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2018shares
Summary of Restricted Common Stock Activity, Nonvested, Number of Shares [Roll Forward]
Nonvested, Beginning Balance (in shares)	22,500
Vested (in shares)	(9,000)
Granted (in shares)	9,000
Nonvested, Ending Balance (in shares)	22,500

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Impact related to uncertain tax positions from the results of operations		$ 0	$ 0	$ 0
Interest expense or penalties related to unrecognized tax benefits	$ 0

Income Taxes (Schedule of Chara

Income Taxes (Schedule of Characterization of Distributions Paid to Stockholders) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Ordinary dividends (as a percent)	2.85%	0.00%	45.45%
Capital gain distributions (as a percent)	5.07%	100.00%	3.20%
Nontaxable distributions (as a percent)	92.08%	0.00%	51.35%
Total (as a percent)	100.00%	100.00%	100.00%

Commitments and Contingencies (

Commitments and Contingencies (Details)	Dec. 31, 2018case
Commitments and Contingencies Disclosure [Abstract]
Number of material pending legal proceedings to which the Company is a party	0

Selected Quarterly Financial _3

Selected Quarterly Financial Data (Unaudited) (Schedule of Selected Quarterly Financial Data (Unaudited)) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selected Quarterly Financial Information [Abstract]
Total revenue	$ 20,149	$ 17,496	$ 17,182	$ 1,535	$ 22,984	$ 23,857	$ 25,877	$ 21,696	$ 56,362	$ 94,414	$ 90,237
Total expenses	(14,327)	(13,865)	(13,952)	(35,895)	(19,237)	(15,263)	(15,058)	(14,849)	(78,039)	(64,407)	(75,437)
(Loss) income from operations	5,822	3,631	3,230	(34,360)	3,747	8,594	10,819	6,847	(21,677)	30,007	14,800
Other expense	(3,760)	(2,145)	(9,586)	(3,404)	(41,210)	(12,286)	(6,497)	(7,052)	(18,895)	(67,045)	(14,322)
(Loss) income from continuing operations	2,062	1,486	(6,356)	(37,764)	(37,463)	(3,692)	4,322	(205)	(40,572)	(37,038)	478
(Loss) income from discontinued operations	(9)	4,117	11,950	20,533	231,964	10,636	8,886	10,189	36,591	261,675	34,679
Net (loss) income	2,053	5,603	5,594	(17,231)	194,501	6,944	13,208	9,984	(3,981)	224,637	35,157
Less: Net loss (income) attributable to noncontrolling interests in consolidated partnerships	7	(33)	48	0	(44,308)	(898)	(1,039)	(1,081)	22	(47,326)	(3,921)
Net (loss) income attributable to common stockholders	$ 2,060	$ 5,570	$ 5,642	$ (17,231)	$ 150,193	$ 6,046	$ 12,169	$ 8,903	$ (3,959)	$ 177,311	$ 31,236
Basic:
Continuing operations (in dollars per share)	$ 0.01	$ 0.01	$ (0.04)	$ (0.20)	$ (0.21)	$ (0.02)	$ 0.03	$ 0	$ (0.22)	$ (0.20)	$ 0
Discontinued operations (in dollars per share)	0	0.02	0.07	0.11	1.01	0.05	0.04	0.05	0.20	1.15	0.17
Net (loss) income attributable to common stockholders (in dollars per share)	0.01	0.03	0.03	(0.09)	0.80	0.03	0.07	0.05	(0.02)	0.95	0.17
Diluted:
Continuing operations (in dollars per share)	0.01	0.01	(0.04)	(0.20)	(0.21)	(0.02)	0.03	0	(0.22)	(0.20)	0
Discontinued operations (in dollars per share)	0	0.02	0.07	0.11	1.01	0.05	0.04	0.05	0.20	1.15	0.17
Net (loss) income attributable to common stockholders (in dollars per share)	$ 0.01	$ 0.03	$ 0.03	$ (0.09)	$ 0.80	$ 0.03	$ 0.07	$ 0.05	$ (0.02)	$ 0.95	$ 0.17
Weighted average number of common shares outstanding:
Basic (in shares)	182,656,235	181,260,431	181,128,292	185,673,400	186,182,196	186,295,970	185,897,525	185,300,384	182,667,312	185,922,468	183,279,872
Diluted (in shares)	182,678,735	181,282,589	181,128,292	185,673,400	186,182,196	186,295,970	185,911,968	185,300,384	182,667,312	185,922,468	183,297,662

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Mar. 15, 2019	Mar. 01, 2019	Feb. 26, 2019	Feb. 01, 2019	Jan. 25, 2019	Jan. 10, 2019	Jan. 02, 2019	Jan. 22, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Subsequent Event [Line Items]
Common stock issued through distribution reinvestment plan									$ 41,819	$ 66,993	$ 68,086
Distributions declared per common share (in dollars per share)								$ 3	$ 3.49	$ 0.70	$ 0.70
Subsequent Event [Member]
Subsequent Event [Line Items]
Repurchase of common stock (as % of shares requested to be repurchased)						49.50%
Subsequent Event [Member] | December 1, 2018 To December 31, 2018 [Member]
Subsequent Event [Line Items]
Aggregate distributions paid							$ 4,974
Distributions paid in cash							2,691
Common stock issued through distribution reinvestment plan							$ 2,283
Subsequent Event [Member] | January 1, 2019 To January 31, 2019 [Member]
Subsequent Event [Line Items]
Aggregate distributions paid				$ 4,921
Distributions paid in cash				2,663
Common stock issued through distribution reinvestment plan				$ 2,258
Subsequent Event [Member] | February 1, 2019 To February 28, 2019 [Member]
Subsequent Event [Line Items]
Aggregate distributions paid		$ 4,425
Distributions paid in cash		2,397
Common stock issued through distribution reinvestment plan		$ 2,028
Subsequent Event [Member] | February 1, 2019 To February 28, 2019 [Member]
Subsequent Event [Line Items]
Number of days, distribution calculation					365 days
Distributions declared per common share (in dollars per share)					$ 0.000876712
Annualized distribution rate					6.00%
Net asset value (in dollars per share)					$ 5.33
Subsequent Event [Member] | March 1, 2019 To March 31, 2019 [Member]
Subsequent Event [Line Items]
Number of days, distribution calculation			365 days
Distributions declared per common share (in dollars per share)			$ 0.000876712
Annualized distribution rate			6.00%
Net asset value (in dollars per share)			$ 5.33
Subsequent Event [Member] | April 1, 2019 To April 30, 2019 [Member]
Subsequent Event [Line Items]
Number of days, distribution calculation	365 days
Distributions declared per common share (in dollars per share)	$ 0.000876712
Annualized distribution rate	6.00%
Net asset value (in dollars per share)	$ 5.33

SCHEDULE III - REAL ESTATE AS_2

SCHEDULE III - REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION (SCHEDULE OF REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 36,289
Initial Cost, Land	74,746
Initial Cost, Buildings and Improvements	853,568
Cost Capitalized Subsequent to Acquisition	51,920
Gross Amount Carried at Close of Period, Land	72,700
Gross Amount Carried at Close of Period, Buildings and Improvements	907,534
Gross Amount Carried at Close of Period, Total	980,234	$ 1,200,232	$ 2,163,358	$ 2,036,330
Accumulated Depreciation	100,897	$ 101,777	$ 152,486	$ 100,142
St. Louis Surgical Center [Member] | Creve Coeur, MO [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	808
Initial Cost, Buildings and Improvements	8,206
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	808
Gross Amount Carried at Close of Period, Buildings and Improvements	8,206
Gross Amount Carried at Close of Period, Total	9,014
Accumulated Depreciation	1,946
Stonegate Medical Center [Member] | Austin, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,904
Initial Cost, Buildings and Improvements	5,764
Cost Capitalized Subsequent to Acquisition	(227)
Gross Amount Carried at Close of Period, Land	1,904
Gross Amount Carried at Close of Period, Buildings and Improvements	5,537
Gross Amount Carried at Close of Period, Total	7,441
Accumulated Depreciation	1,231
HPI Integrated Medical Facility [Member] | Oklahoma City, OK [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	789
Initial Cost, Buildings and Improvements	7,815
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	789
Gross Amount Carried at Close of Period, Buildings and Improvements	7,815
Gross Amount Carried at Close of Period, Total	8,604
Accumulated Depreciation	1,522
Baylor Medical Center [Member] | Dallas, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	17,923
Initial Cost, Land	4,012
Initial Cost, Buildings and Improvements	23,557
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	4,012
Gross Amount Carried at Close of Period, Buildings and Improvements	23,557
Gross Amount Carried at Close of Period, Total	27,569
Accumulated Depreciation	3,800
Vibra Denver Hospital [Member] | Denver, CO [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,798
Initial Cost, Buildings and Improvements	15,012
Cost Capitalized Subsequent to Acquisition	7,349
Gross Amount Carried at Close of Period, Land	1,798
Gross Amount Carried at Close of Period, Buildings and Improvements	22,361
Gross Amount Carried at Close of Period, Total	24,159
Accumulated Depreciation	2,826
Vibra New Bedford Hospital [Member] | New Bedford, MA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,992
Initial Cost, Buildings and Improvements	21,823
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	1,992
Gross Amount Carried at Close of Period, Buildings and Improvements	21,823
Gross Amount Carried at Close of Period, Total	23,815
Accumulated Depreciation	3,502
Houston Surgery Center [Member] | Houston, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	503
Initial Cost, Buildings and Improvements	4,115
Cost Capitalized Subsequent to Acquisition	1,710
Gross Amount Carried at Close of Period, Land	503
Gross Amount Carried at Close of Period, Buildings and Improvements	5,825
Gross Amount Carried at Close of Period, Total	6,328
Accumulated Depreciation	763
Akron General Medical Center [Member] | Green, OH [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	2,936
Initial Cost, Buildings and Improvements	36,142
Cost Capitalized Subsequent to Acquisition	(11)
Gross Amount Carried at Close of Period, Land	2,936
Gross Amount Carried at Close of Period, Buildings and Improvements	36,131
Gross Amount Carried at Close of Period, Total	39,067
Accumulated Depreciation	5,742
Grapevine Hospital [Member] | Grapevine, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	962
Initial Cost, Buildings and Improvements	20,277
Cost Capitalized Subsequent to Acquisition	105
Gross Amount Carried at Close of Period, Land	962
Gross Amount Carried at Close of Period, Buildings and Improvements	20,382
Gross Amount Carried at Close of Period, Total	21,344
Accumulated Depreciation	3,125
Wilkes-Barre Healthcare Facility [Member] | Mountain Top, PA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	335
Initial Cost, Buildings and Improvements	3,812
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	335
Gross Amount Carried at Close of Period, Buildings and Improvements	3,812
Gross Amount Carried at Close of Period, Total	4,147
Accumulated Depreciation	673
Fresenius Healthcare Facility [Member] | Goshen, IN [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	304
Initial Cost, Buildings and Improvements	3,965
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	304
Gross Amount Carried at Close of Period, Buildings and Improvements	3,965
Gross Amount Carried at Close of Period, Total	4,269
Accumulated Depreciation	563
Physicians' Specialty Hospital [Member] | Fayetteville, AR [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	322
Initial Cost, Buildings and Improvements	19,974
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	322
Gross Amount Carried at Close of Period, Buildings and Improvements	19,974
Gross Amount Carried at Close of Period, Total	20,296
Accumulated Depreciation	2,802
Christus Cabrini Surgery Center [Member] | Alexandria, LA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	0
Initial Cost, Buildings and Improvements	4,235
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings and Improvements	4,235
Gross Amount Carried at Close of Period, Total	4,235
Accumulated Depreciation	592
Valley Baptist Wellness Center [Member] | Harlingen, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	0
Initial Cost, Buildings and Improvements	8,386
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings and Improvements	8,386
Gross Amount Carried at Close of Period, Total	8,386
Accumulated Depreciation	1,173
Akron General Integrated Medical Facility [Member] | Green, OH [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	904
Initial Cost, Buildings and Improvements	7,933
Cost Capitalized Subsequent to Acquisition	1
Gross Amount Carried at Close of Period, Land	904
Gross Amount Carried at Close of Period, Buildings and Improvements	7,934
Gross Amount Carried at Close of Period, Total	8,838
Accumulated Depreciation	1,240
Legent Orthopedic and Spine Hospital [Member] | San Antonio, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	3,440
Initial Cost, Buildings and Improvements	25,923
Cost Capitalized Subsequent to Acquisition	4,155
Gross Amount Carried at Close of Period, Land	3,440
Gross Amount Carried at Close of Period, Buildings and Improvements	30,078
Gross Amount Carried at Close of Period, Total	33,518
Accumulated Depreciation	4,515
Post Acute/Warm Springs Rehab Hospital of Westover Hills [Member] | San Antonio, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,740
Initial Cost, Buildings and Improvements	18,280
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	1,740
Gross Amount Carried at Close of Period, Buildings and Improvements	18,280
Gross Amount Carried at Close of Period, Total	20,020
Accumulated Depreciation	2,452
Warm Springs Rehabilitation Hospital [Member] | San Antonio, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	0
Initial Cost, Buildings and Improvements	23,462
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings and Improvements	23,462
Gross Amount Carried at Close of Period, Total	23,462
Accumulated Depreciation	3,026
Lubbock Heart Hospital [Member] | Lubbock, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	18,366
Initial Cost, Land	3,749
Initial Cost, Buildings and Improvements	32,174
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	3,749
Gross Amount Carried at Close of Period, Buildings and Improvements	32,174
Gross Amount Carried at Close of Period, Total	35,923
Accumulated Depreciation	4,092
Walnut Hill Medical Center [Member] | Dallas, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	3,337
Initial Cost, Buildings and Improvements	79,116
Cost Capitalized Subsequent to Acquisition	(40,909)
Gross Amount Carried at Close of Period, Land	1,877
Gross Amount Carried at Close of Period, Buildings and Improvements	39,667
Gross Amount Carried at Close of Period, Total	41,544
Accumulated Depreciation	557
Cypress Pointe Surgical Hospital [Member] | Hammond, LA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,379
Initial Cost, Buildings and Improvements	20,549
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	1,379
Gross Amount Carried at Close of Period, Buildings and Improvements	20,549
Gross Amount Carried at Close of Period, Total	21,928
Accumulated Depreciation	2,575
UTMB Health Clear Lake Campus [Member] | Webster, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	6,937
Initial Cost, Buildings and Improvements	168,710
Cost Capitalized Subsequent to Acquisition	64,271
Gross Amount Carried at Close of Period, Land	6,937
Gross Amount Carried at Close of Period, Buildings and Improvements	232,981
Gross Amount Carried at Close of Period, Total	239,918
Accumulated Depreciation	21,062
Rhode Island Rehabilitation Healthcare Facility [Member] | North Smithfield, RI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	818
Initial Cost, Buildings and Improvements	11,597
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	818
Gross Amount Carried at Close of Period, Buildings and Improvements	11,597
Gross Amount Carried at Close of Period, Total	12,415
Accumulated Depreciation	1,422
Select Medical - Akron [Member] | Akron, OH [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	2,207
Initial Cost, Buildings and Improvements	23,430
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	2,207
Gross Amount Carried at Close of Period, Buildings and Improvements	23,430
Gross Amount Carried at Close of Period, Total	25,637
Accumulated Depreciation	2,596
Select Medical - Frisco [Member] | Frisco, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	0
Initial Cost, Buildings and Improvements	20,679
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings and Improvements	20,679
Gross Amount Carried at Close of Period, Total	20,679
Accumulated Depreciation	2,401
Select Medical - Bridgeton [Member] | Bridgeton, MO [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	0
Initial Cost, Buildings and Improvements	31,204
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings and Improvements	31,204
Gross Amount Carried at Close of Period, Total	31,204
Accumulated Depreciation	3,486
San Antonio Healthcare Facility [Member] | San Antonio, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	3,200
Initial Cost, Buildings and Improvements	0
Cost Capitalized Subsequent to Acquisition	17,738
Gross Amount Carried at Close of Period, Land	3,200
Gross Amount Carried at Close of Period, Buildings and Improvements	17,738
Gross Amount Carried at Close of Period, Total	20,938
Accumulated Depreciation	869
Dermatology Assoc-Randolph Ct [Member] | Mantiowoc, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	390
Initial Cost, Buildings and Improvements	2,202
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	390
Gross Amount Carried at Close of Period, Buildings and Improvements	2,202
Gross Amount Carried at Close of Period, Total	2,592
Accumulated Depreciation	279
Dermatology Assoc-Murray St [Member] | Marinette, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	253
Initial Cost, Buildings and Improvements	1,134
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	253
Gross Amount Carried at Close of Period, Buildings and Improvements	1,134
Gross Amount Carried at Close of Period, Total	1,387
Accumulated Depreciation	152
Dermatology Assoc-N Lightning Dr [Member] | Appleton, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	463
Initial Cost, Buildings and Improvements	2,049
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	463
Gross Amount Carried at Close of Period, Buildings and Improvements	2,049
Gross Amount Carried at Close of Period, Total	2,512
Accumulated Depreciation	276
Dermatology Assoc-Development Dr [Member] | Bellevue, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	491
Initial Cost, Buildings and Improvements	1,450
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	491
Gross Amount Carried at Close of Period, Buildings and Improvements	1,450
Gross Amount Carried at Close of Period, Total	1,941
Accumulated Depreciation	196
Dermatology Assoc-York St [Member] | Mantiowoc, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	305
Initial Cost, Buildings and Improvements	11,299
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	305
Gross Amount Carried at Close of Period, Buildings and Improvements	11,299
Gross Amount Carried at Close of Period, Total	11,604
Accumulated Depreciation	1,299
Dermatology Assoc-Scheuring Rd [Member] | De Pere, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	703
Initial Cost, Buildings and Improvements	1,851
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	703
Gross Amount Carried at Close of Period, Buildings and Improvements	1,851
Gross Amount Carried at Close of Period, Total	2,554
Accumulated Depreciation	244
Dermatology Assoc-Riverview Dr [Member] | Howard, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	552
Initial Cost, Buildings and Improvements	1,960
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	552
Gross Amount Carried at Close of Period, Buildings and Improvements	1,960
Gross Amount Carried at Close of Period, Total	2,512
Accumulated Depreciation	263
Dermatology Assoc-State Rd 44 [Member] | Oshkosh, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	384
Initial Cost, Buildings and Improvements	2,514
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	384
Gross Amount Carried at Close of Period, Buildings and Improvements	2,514
Gross Amount Carried at Close of Period, Total	2,898
Accumulated Depreciation	331
Dermatology Assoc-Green Bay Rd [Member] | Sturgeon Bay, WI [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	364
Initial Cost, Buildings and Improvements	657
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	364
Gross Amount Carried at Close of Period, Buildings and Improvements	657
Gross Amount Carried at Close of Period, Total	1,021
Accumulated Depreciation	98
Lafayette Surgical Hospital [Member] | Lafayette, LA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	3,909
Initial Cost, Buildings and Improvements	33,212
Cost Capitalized Subsequent to Acquisition	262
Gross Amount Carried at Close of Period, Land	3,909
Gross Amount Carried at Close of Period, Buildings and Improvements	33,474
Gross Amount Carried at Close of Period, Total	37,383
Accumulated Depreciation	3,712
Landmark Hospital of Savannah [Member] | Savannah, GA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,980
Initial Cost, Buildings and Improvements	15,418
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	1,980
Gross Amount Carried at Close of Period, Buildings and Improvements	15,418
Gross Amount Carried at Close of Period, Total	17,398
Accumulated Depreciation	1,558
21st Century Oncology-Yucca Valley [Member] | Yucca Valley, CA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	663
Initial Cost, Buildings and Improvements	4,004
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	663
Gross Amount Carried at Close of Period, Buildings and Improvements	4,004
Gross Amount Carried at Close of Period, Total	4,667
Accumulated Depreciation	444
21st Century Oncology-Rancho Mirage [Member] | Rancho Mirage, CA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	156
Initial Cost, Buildings and Improvements	5,934
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	156
Gross Amount Carried at Close of Period, Buildings and Improvements	5,934
Gross Amount Carried at Close of Period, Total	6,090
Accumulated Depreciation	650
21st Century Oncology-Palm Desert [Member] | Palm Desert, CA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	364
Initial Cost, Buildings and Improvements	5,340
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	364
Gross Amount Carried at Close of Period, Buildings and Improvements	5,340
Gross Amount Carried at Close of Period, Total	5,704
Accumulated Depreciation	547
21st Century Oncology-Santa Rosa Beach [Member] | Santa Rosa Beach, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	646
Initial Cost, Buildings and Improvements	3,211
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	646
Gross Amount Carried at Close of Period, Buildings and Improvements	3,211
Gross Amount Carried at Close of Period, Total	3,857
Accumulated Depreciation	318
21st Century Oncology-Crestview [Member] | Crestview, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	205
Initial Cost, Buildings and Improvements	2,503
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	205
Gross Amount Carried at Close of Period, Buildings and Improvements	2,503
Gross Amount Carried at Close of Period, Total	2,708
Accumulated Depreciation	268
21st Century Oncology-Fort Walton [Member] | Fort Walton Beach, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	747
Initial Cost, Buildings and Improvements	3,012
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	747
Gross Amount Carried at Close of Period, Buildings and Improvements	3,012
Gross Amount Carried at Close of Period, Total	3,759
Accumulated Depreciation	317
21st Century Oncology-Bradenton [Member] | Bradenton, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	835
Initial Cost, Buildings and Improvements	2,699
Cost Capitalized Subsequent to Acquisition	(2,524)
Gross Amount Carried at Close of Period, Land	249
Gross Amount Carried at Close of Period, Buildings and Improvements	761
Gross Amount Carried at Close of Period, Total	1,010
Accumulated Depreciation	39
21st Century Oncology-Fort Myers I [Member] | Fort Myers, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	2,301
Initial Cost, Buildings and Improvements	1,180
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	2,301
Gross Amount Carried at Close of Period, Buildings and Improvements	1,180
Gross Amount Carried at Close of Period, Total	3,481
Accumulated Depreciation	207
21st Century Oncology-Fort Myers II [Member] | Fort Myers, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	4,522
Initial Cost, Buildings and Improvements	13,106
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	4,522
Gross Amount Carried at Close of Period, Buildings and Improvements	13,106
Gross Amount Carried at Close of Period, Total	17,628
Accumulated Depreciation	1,387
21st Century Oncology-Bonita Springs [Member] | Bonita Springs, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,146
Initial Cost, Buildings and Improvements	3,978
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	1,146
Gross Amount Carried at Close of Period, Buildings and Improvements	3,978
Gross Amount Carried at Close of Period, Total	5,124
Accumulated Depreciation	391
21st Century Oncology-Lehigh Acres [Member] | Lehigh Acres, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	433
Initial Cost, Buildings and Improvements	2,508
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	433
Gross Amount Carried at Close of Period, Buildings and Improvements	2,508
Gross Amount Carried at Close of Period, Total	2,941
Accumulated Depreciation	252
21st Century Oncology-Jacksonville [Member] | Jacksonville, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	802
Initial Cost, Buildings and Improvements	5,879
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	802
Gross Amount Carried at Close of Period, Buildings and Improvements	5,879
Gross Amount Carried at Close of Period, Total	6,681
Accumulated Depreciation	701
21st Century Oncology-Frankfort [Member] | Frankfort, KY [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	291
Initial Cost, Buildings and Improvements	817
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	291
Gross Amount Carried at Close of Period, Buildings and Improvements	817
Gross Amount Carried at Close of Period, Total	1,108
Accumulated Depreciation	94
21st Century Oncology-Las Vegas [Member] | Las Vegas, NV [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	251
Initial Cost, Buildings and Improvements	4,927
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	251
Gross Amount Carried at Close of Period, Buildings and Improvements	4,927
Gross Amount Carried at Close of Period, Total	5,178
Accumulated Depreciation	505
21st Century Oncology-Henderson [Member] | Henderson, NV [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	617
Initial Cost, Buildings and Improvements	2,324
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	617
Gross Amount Carried at Close of Period, Buildings and Improvements	2,324
Gross Amount Carried at Close of Period, Total	2,941
Accumulated Depreciation	254
21st Century Oncology-Fairlea [Member] | Fairlea, WV [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	125
Initial Cost, Buildings and Improvements	1,717
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	125
Gross Amount Carried at Close of Period, Buildings and Improvements	1,717
Gross Amount Carried at Close of Period, Total	1,842
Accumulated Depreciation	178
21st Century Oncology-El Segundo [Member] | El Segundo, CA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,138
Initial Cost, Buildings and Improvements	8,743
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	1,138
Gross Amount Carried at Close of Period, Buildings and Improvements	8,743
Gross Amount Carried at Close of Period, Total	9,881
Accumulated Depreciation	852
21st Century Oncology-Lakewood Ranch [Member] | Bradenton, FL [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	553
Initial Cost, Buildings and Improvements	8,516
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	553
Gross Amount Carried at Close of Period, Buildings and Improvements	8,516
Gross Amount Carried at Close of Period, Total	9,069
Accumulated Depreciation	871
Post Acute Medical - Victoria I [Member] | Victoria, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	331
Initial Cost, Buildings and Improvements	10,278
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	331
Gross Amount Carried at Close of Period, Buildings and Improvements	10,278
Gross Amount Carried at Close of Period, Total	10,609
Accumulated Depreciation	714
Post Acute Medical - Victoria II [Member] | Victoria, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	450
Initial Cost, Buildings and Improvements	10,393
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	450
Gross Amount Carried at Close of Period, Buildings and Improvements	10,393
Gross Amount Carried at Close of Period, Total	10,843
Accumulated Depreciation	711
Post Acute Medical - New Braunfels [Member] | New Braunfels, TX [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,619
Initial Cost, Buildings and Improvements	9,295
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	1,619
Gross Amount Carried at Close of Period, Buildings and Improvements	9,295
Gross Amount Carried at Close of Period, Total	10,914
Accumulated Depreciation	638
Post Acute Medical - Covington [Member] | Covington, LA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	1,529
Initial Cost, Buildings and Improvements	13,503
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	1,529
Gross Amount Carried at Close of Period, Buildings and Improvements	13,503
Gross Amount Carried at Close of Period, Total	15,032
Accumulated Depreciation	911
Post Acute Medical - Hammond [Member] | Hammond, LA [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost, Land	852
Initial Cost, Buildings and Improvements	9,815
Cost Capitalized Subsequent to Acquisition	0
Gross Amount Carried at Close of Period, Land	852
Gross Amount Carried at Close of Period, Buildings and Improvements	9,815
Gross Amount Carried at Close of Period, Total	10,667
Accumulated Depreciation	$ 687

SCHEDULE III - REAL ESTATE AS_3

SCHEDULE III - REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION (SCHEDULE OF REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION - NARRATIVE) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)property
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Number of properties collateralized under unsecured credit facility | property	53
Unsecured credit facility, principal amount outstanding	$ 190,000
Aggregated cost for federal income tax purposes	$ 1,128,912
Building and improvements [Member] | Minimum [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life used for depreciation	15 years
Building and improvements [Member] | Maximum [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life used for depreciation	40 years

SCHEDULE III - REAL ESTATE AS_4

SCHEDULE III - REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION (SCHEDULE OF REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION - ROLLFORWARD) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]
Balance at beginning of year	$ 1,200,232	$ 2,163,358	$ 2,036,330
Acquisitions	0	0	58,065
Improvements	4,683	21,678	68,963
Write-offs	(15,214)	(33,211)	0
Dispositions	(209,253)	(951,593)	0
Other adjustments	(214)	0	0
Balance at end of year	980,234	1,200,232	2,163,358
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]
Balance at beginning of year	(101,777)	(152,486)	(100,142)
Depreciation	(24,020)	(49,483)	(52,344)
Write-offs	8,461	0	0
Dispositions	16,225	100,192	0
Other adjustments	214	0	0
Balance at end of year	$ (100,897)	$ (101,777)	$ (152,486)