Healthcare Trust of America (HTA) 10-Q 30 Apr 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 29, 2014
Entity Information [Line Items]	'	'
Entity Registrant Name	'HEALTHCARE TRUST OF AMERICA, INC.	'
Entity Central Index Key	'0001360604	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	237,303,146
Healthcare Trust of America Holdings, LP (HTALP)	'	'
Entity Information [Line Items]	'	'
Entity Registrant Name	'Healthcare Trust of America Holdings, LP	'
Entity Central Index Key	'0001495491	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Real estate investments:	'	'
Land	$203,014	$203,001
Building and improvements	2,363,386	2,358,071
Lease intangibles	410,076	411,857
Real estate investments, gross	2,976,476	2,972,929
Accumulated depreciation and amortization	-477,487	-445,938
Real estate investments, net	2,498,989	2,526,991
Real estate notes receivable	28,520	28,520
Cash and cash equivalents	27,359	18,081
Restricted cash and escrow deposits	18,510	18,114
Receivables and other assets, net	112,591	110,285
Other intangibles, net	49,277	50,343
Total assets	2,735,246	2,752,334
Liabilities:	'	'
Debt, net	1,232,282	1,214,241
Accounts payable and accrued liabilities	78,973	82,893
Derivative financial instruments - interest rate swaps	5,025	5,053
Security deposits, prepaid rent and other liabilities	32,802	35,339
Intangible liabilities, net	11,399	11,797
Total liabilities	1,360,481	1,349,323
Commitments and contingencies	'	'
Redeemable noncontrolling interest of limited partners	3,269	3,262
Equity/Partners' Capital:	'	'
Preferred stock, $0.01 par value; 200,000,000 shares authorized; none issued and outstanding	0	0
Class A common stock, $0.01 par value; 1,000,000,000 shares authorized; 237,291,746 and 236,880,614 shares issued and outstanding as of March 31, 2014 and December 31, 2013, respectively	2,373	2,369
Additional paid-in capital	2,127,709	2,126,897
Cumulative dividends in excess of earnings	-770,878	-742,060
Total stockholders’ equity	1,359,204	1,387,206
Noncontrolling interest	12,292	12,543
Total equity	1,371,496	1,399,749
Total liabilities and equity/partners' capital	2,735,246	2,752,334
Healthcare Trust of America Holdings, LP (HTALP)	'	'
Real estate investments:	'	'
Land	203,014	203,001
Building and improvements	2,363,386	2,358,071
Lease intangibles	410,076	411,857
Real estate investments, gross	2,976,476	2,972,929
Accumulated depreciation and amortization	-477,487	-445,938
Real estate investments, net	2,498,989	2,526,991
Real estate notes receivable	28,520	28,520
Cash and cash equivalents	27,359	18,081
Restricted cash and escrow deposits	18,510	18,114
Receivables and other assets, net	112,591	110,285
Other intangibles, net	49,277	50,343
Total assets	2,735,246	2,752,334
Liabilities:	'	'
Debt, net	1,232,282	1,214,241
Accounts payable and accrued liabilities	78,973	82,893
Derivative financial instruments - interest rate swaps	5,025	5,053
Security deposits, prepaid rent and other liabilities	32,802	35,339
Intangible liabilities, net	11,399	11,797
Total liabilities	1,360,481	1,349,323
Commitments and contingencies	'	'
Redeemable noncontrolling interest of limited partners	1,741	1,717
Equity/Partners' Capital:	'	'
Limited partners’ capital, 3,052,918 units issued and outstanding as of March 31, 2014 and December 31, 2013	13,550	13,818
General partners’ capital, 237,291,746 and 236,880,614 units issued and outstanding as of March 31, 2014 and December 31, 2013, respectively	1,359,474	1,387,476
Total partners’ capital	1,373,024	1,401,294
Total liabilities and equity/partners' capital	$2,735,246	$2,752,334

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Equity:	'	'
Preferred stock, par value (usd per share)	$0.01	$0.01
Preferred stock, shares authorized	200,000,000	200,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A	'	'
Equity:	'	'
Common stock, par value (usd per share)	$0.01	$0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	237,291,746	236,880,614
Common stock, shares outstanding	237,291,746	236,880,614
Healthcare Trust of America Holdings, LP (HTALP)	'	'
Partners’ Capital:	'	'
Limited partner's capital, units issued	3,052,918	3,052,918
Limited partner's capital, units outstanding	3,052,918	3,052,918
General partner's capital, units issued	237,291,746	236,880,614
General partner's capital, units outstanding	237,291,746	236,880,614

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenues:	'	'
Rental income	$90,452	$76,241
Interest income from real estate notes receivable	852	620
Total revenues	91,304	76,861
Expenses:	'	'
Rental	29,589	23,969
General and administrative	6,299	6,448
Acquisition-related	976	1,025
Depreciation and amortization	34,942	28,561
Listing	0	4,405
Total expenses	71,806	64,408
Income before other income (expense)	19,498	12,453
Interest expense:	'	'
Interest related to derivative financial instruments	-1,345	-1,365
Net gain (loss) on change in the fair value of derivative financial instruments	-841	1,606
Total interest related to derivative financial instruments, including net change in the fair value of derivative financial instruments	-2,186	241
Interest related to debt	-11,904	-11,318
Other income (expense)	26	8
Net income	5,434	1,384
Net income attributable to noncontrolling interests	-142	-33
Net income attributable to common stockholders/unitholders	5,292	1,351
Earnings per common share/unit - basic	'	'
Net income attributable to common stockholders/unitholders (usd per share)	$0.02	$0.01
Earnings per common share/unit - diluted:	'	'
Net income attributable to common stockholders/unitholders (usd per share)	$0.02	$0.01
Weighted average number of common shares/units outstanding:	'	'
Basic (in shares/units)	237,287	217,103
Diluted (in shares/units)	239,823	218,904
Dividends/Distributions declared per common share/unit (usd per share/unit)	$0.14	$0.14
Healthcare Trust of America Holdings, LP (HTALP)	'	'
Revenues:	'	'
Rental income	90,452	76,241
Interest income from real estate notes receivable	852	620
Total revenues	91,304	76,861
Expenses:	'	'
Rental	29,589	23,969
General and administrative	6,299	6,448
Acquisition-related	976	1,025
Depreciation and amortization	34,942	28,561
Listing	0	4,405
Total expenses	71,806	64,408
Income before other income (expense)	19,498	12,453
Interest expense:	'	'
Interest related to derivative financial instruments	-1,345	-1,365
Net gain (loss) on change in the fair value of derivative financial instruments	-841	1,606
Total interest related to derivative financial instruments, including net change in the fair value of derivative financial instruments	-2,186	241
Interest related to debt	-11,904	-11,318
Other income (expense)	26	8
Net income	5,434	1,384
Net income attributable to noncontrolling interests	-38	-25
Net income attributable to common stockholders/unitholders	$5,396	$1,359
Earnings per common share/unit - basic	'	'
Net income attributable to common stockholders/unitholders (usd per share)	$0.02	$0.01
Earnings per common share/unit - diluted:	'	'
Net income attributable to common stockholders/unitholders (usd per share)	$0.02	$0.01
Weighted average number of common shares/units outstanding:	'	'
Basic (in shares/units)	240,340	220,159
Diluted (in shares/units)	240,340	220,159
Dividends/Distributions declared per common share/unit (usd per share/unit)	$0.14	$0.14

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Equity (USD $)	Total	Class A	Common Stock	Common Stock	Common Stock	Additional Paid-In Capital	Cumulative Dividends in Excess of Earnings	Total Stockholders’ Equity	Noncontrolling Interest
In Thousands, except Share data, unless otherwise specified	USD ($)		USD ($)	Class A	Class B	USD ($)	USD ($)	USD ($)	USD ($)
Beginning balance at Dec. 31, 2012	$1,264,595	'	$2,147	'	'	$1,885,836	($633,717)	$1,254,266	$10,329
Beginning balance, shares at Dec. 31, 2012	'	'	'	100,086,000	114,566,000	'	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'	'
Issuance of common stock (in shares)	'	'	'	9,308,000	'	'	'	'	'
Issuance of common stock	104,558	'	93	'	'	104,465	'	104,558	'
Share-based award transactions, net (in shares)	'	'	'	358,000	'	'	'	'	'
Share-based award transactions, net	4,323	'	4	'	'	1,187	'	1,191	3,132
Repurchase and cancellation of common stock (in shares)	'	'	'	-27,000	'	'	'	'	'
Repurchase and cancellation of common stock	-272	'	-1	'	'	-271	'	-272	'
Dividends	-32,518	'	'	'	'	'	-32,241	-32,241	-277
Noncontrolling interest transfer	1,619	'	'	'	'	'	'	'	1,619
Net income	1,351	'	'	'	'	'	1,351	1,351	'
Ending balance at Mar. 31, 2013	1,343,656	'	2,243	'	'	1,991,217	-664,607	1,328,853	14,803
Ending balance, shares at Mar. 31, 2013	'	'	'	109,725,000	114,566,000	'	'	'	'
Beginning balance at Dec. 31, 2013	1,399,749	'	2,369	'	'	2,126,897	-742,060	1,387,206	12,543
Beginning balance, shares at Dec. 31, 2013	'	236,880,614	'	236,880,000	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'	'
Share-based award transactions, net (in shares)	'	'	'	469,000	'	'	'	'	'
Share-based award transactions, net	1,388	'	5	'	'	1,383	'	1,388	0
Repurchase and cancellation of common stock (in shares)	'	'	'	-58,000	'	'	'	'	'
Repurchase and cancellation of common stock	-572	'	-1	'	'	-571	'	-572	'
Dividends	-34,459	'	'	'	'	'	-34,110	-34,110	-349
Net income	5,390	'	'	'	'	'	5,292	5,292	98
Ending balance at Mar. 31, 2014	$1,371,496	'	$2,373	'	'	$2,127,709	($770,878)	$1,359,204	$12,292
Ending balance, shares at Mar. 31, 2014	'	237,291,746	'	237,291,000	0	'	'	'	'

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Changes In Partners' Capital (USD $)	Total	Healthcare Trust of America Holdings, LP (HTALP)	Healthcare Trust of America Holdings, LP (HTALP)	Healthcare Trust of America Holdings, LP (HTALP)
In Thousands, unless otherwise specified			General Partner	Limited Partner
Balance as of beginning of period at Dec. 31, 2012	'	$1,266,199	$1,254,536	$11,663
Balance as of beginning of period (in units) at Dec. 31, 2012	'	'	214,652	3,056
Increase (Decrease) in Partners' Capital [Roll Forward]	'	'	'	'
Issuance of general partner units (in units)	'	'	9,308	'
Issuance of general partner units	'	104,558	104,558	'
Share-based award transactions, net (in units)	'	'	358	'
Share-based award transactions, net	'	4,323	1,191	3,132
Redemptions of general partner units (in units)	'	'	-27	'
Redemptions of general partner units	'	-272	-272	'
Distributions	'	-32,518	-32,241	-277
Net income attributable to common unitholders	1,351	1,359	1,351	8
Balance as of end of period at Mar. 31, 2013	'	1,343,649	1,329,123	14,526
Balance as of end of period (in units) at Mar. 31, 2013	'	'	224,291	3,056
Balance as of beginning of period at Dec. 31, 2013	'	1,401,294	1,387,476	13,818
Balance as of beginning of period (in units) at Dec. 31, 2013	'	'	236,880	3,053
Increase (Decrease) in Partners' Capital [Roll Forward]	'	'	'	'
Share-based award transactions, net (in units)	'	'	469	'
Share-based award transactions, net	'	1,388	1,388	'
Redemptions of general partner units (in units)	'	'	-58	'
Redemptions of general partner units	'	-572	-572	'
Distributions	'	-34,482	-34,110	-372
Net income attributable to common unitholders	5,292	5,396	5,292	104
Balance as of end of period at Mar. 31, 2014	'	$1,373,024	$1,359,474	$13,550
Balance as of end of period (in units) at Mar. 31, 2014	'	'	237,291	3,053

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income	$5,434	$1,384
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation, amortization and other	34,111	28,564
Share-based compensation expense	1,388	4,323
Bad debt expense	99	-174
Change in fair value of derivative financial instruments	841	-1,606
Changes in operating assets and liabilities:	'	'
Receivables and other assets, net	-1,739	-5,428
Accounts payable and accrued liabilities	-4,168	1,331
Security deposits, prepaid rent and other liabilities	-2,517	-457
Net cash provided by operating activities	33,449	27,937
Cash flows from investing activities:	'	'
Acquisition of real estate operating properties and other assets	0	-88,529
Capital expenditures	-5,570	-3,739
Restricted cash, escrow deposits and notes receivable	-396	143
Net cash used in investing activities	-5,966	-92,125
Cash flows from financing activities:	'	'
Proceeds from unsecured senior notes	0	297,558
Borrowings on unsecured revolving credit facility	30,000	103,000
Payments on unsecured revolving credit facility	-10,000	-175,000
Payments on secured real estate term loan and mortgage loans	-1,901	-127,175
Deferred financing costs	-1,077	-2,179
Derivative financial instrument termination payments	0	-1,195
Security deposits	247	0
Proceeds from issuance of common stock, net	0	105,749
Repurchase and cancellation of common stock	-572	-272
Dividends	-34,052	-30,856
Payment on earnout liability	-375	-92
Distributions to noncontrolling interest of limited partners	-475	-348
Net cash provided by (used in) financing activities	-18,205	169,190
Net change in cash and cash equivalents	9,278	105,002
Cash and cash equivalents - beginning of period	18,081	15,956
Cash and cash equivalents - end of period	27,359	120,958
Healthcare Trust of America Holdings, LP (HTALP)	'	'
Cash flows from operating activities:	'	'
Net income	5,434	1,384
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation, amortization and other	34,111	28,564
Share-based compensation expense	1,388	4,323
Bad debt expense	99	-174
Change in fair value of derivative financial instruments	841	-1,606
Changes in operating assets and liabilities:	'	'
Receivables and other assets, net	-1,739	-5,428
Accounts payable and accrued liabilities	-4,168	1,331
Security deposits, prepaid rent and other liabilities	-2,517	-457
Net cash provided by operating activities	33,449	27,937
Cash flows from investing activities:	'	'
Acquisition of real estate operating properties and other assets	0	-88,529
Capital expenditures	-5,570	-3,739
Restricted cash, escrow deposits and notes receivable	-396	143
Net cash used in investing activities	-5,966	-92,125
Cash flows from financing activities:	'	'
Proceeds from unsecured senior notes	0	297,558
Borrowings on unsecured revolving credit facility	30,000	103,000
Payments on unsecured revolving credit facility	-10,000	-175,000
Payments on secured real estate term loan and mortgage loans	-1,901	-127,175
Deferred financing costs	-1,077	-2,179
Derivative financial instrument termination payments	0	-1,195
Security deposits	247	0
Proceeds from issuance of general partner units, net	0	105,749
Repurchase and cancellation of general partner units	-572	-272
Distributions to general partner	-34,052	-30,856
Payment on earnout liability	-375	-92
Distributions to limited partners and redeemable noncontrolling interests	-475	-348
Net cash provided by (used in) financing activities	-18,205	169,190
Net change in cash and cash equivalents	9,278	105,002
Cash and cash equivalents - beginning of period	18,081	15,956
Cash and cash equivalents - end of period	$27,359	$120,958

Organization_and_Description_o

Organization and Description of Business	3 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization and Description of Business	'
	Organization and Description of Business
	Healthcare Trust of America, Inc., a Maryland corporation, and Healthcare Trust of America Holdings, LP, a Delaware limited partnership, were incorporated or formed, as applicable, on April 20, 2006. Healthcare Trust of America, Inc., or HTA, operates as a real estate investment trust, or REIT, and is the general partner of Healthcare Trust of America Holdings, LP, or HTALP, which is the operating partnership. As of March 31, 2014, HTA owned a 98.94% partnership interest and other limited partners, including some of HTA’s directors, executive officers and their affiliates, owned the remaining partnership interest (including the long term incentive plan, or LTIP, units) in HTALP. As the sole general partner of HTALP, HTA has the full, exclusive and complete responsibility for HTALP’s day-to-day management and control. HTA operates in an umbrella partnership REIT structure in which HTALP and its subsidiaries hold substantially all of the assets. HTA’s only material asset is its ownership of partnership interests of HTALP. As a result, HTA does not conduct business itself, other than acting as the sole general partner of HTALP, issuing public equity from time to time and guaranteeing certain debts of HTALP. HTALP conducts the operations of the business and has no publicly traded equity.
	HTA is a fully integrated, self-administered and internally managed REIT and is one of the largest publicly-traded REITs focused on medical office buildings in the United States based on gross leasable area, or GLA. We are primarily focused on acquiring, owning and operating high-quality medical office buildings that are predominantly located on, or aligned with, campuses of nationally or regionally recognized healthcare systems. In addition, we have strong industry relationships, a stable and diversified tenant mix, and an extensive and active acquisition network. Our primary objective is to maximize stockholder value with disciplined growth through strategic investments and to provide an attractive risk-adjusted return for our stockholders by consistently increasing our cash flow. In pursuing this objective, we (i) target mid-sized acquisitions of high-quality medical office buildings in markets with dominant healthcare systems, attractive demographics and that complement our existing portfolio, (ii) actively manage our balance sheet to maintain flexibility with conservative leverage, and (iii) seek internal growth through proactive asset management, leasing and property management oversight. HTA has qualified to be taxed as a REIT for federal income tax purposes and intends to continue to be taxed as a REIT.
	We invest primarily in high-quality medical office buildings in our target markets, and have acquired high-quality medical office buildings and other facilities that serve the healthcare industry with an aggregate purchase price of approximately $3.0 billion through March 31, 2014. As of March 31, 2014, our portfolio consisted of 269 medical office buildings and 19 other facilities that serve the healthcare industry, as well as real estate notes receivable secured by medical office buildings.
	Our principal executive offices are located at 16435 N. Scottsdale Road, Suite 320, Scottsdale, Arizona, 85254.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2014
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 our condensed consolidated financial statements. Such condensed consolidated financial statements and the accompanying notes are the representations of our management, who are responsible for their integrity and objectivity. 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 our accompanying consolidated financial statements.
	Basis of Presentation
	Our accompanying condensed consolidated financial statements include our accounts and those of our subsidiaries and any consolidated variable interest entities, or VIEs. All inter-company balances and transactions have been eliminated in the accompanying condensed consolidated financial statements.
	Interim Unaudited Financial Data
	Our accompanying condensed consolidated financial statements have been prepared by us in accordance with GAAP in conjunction with the rules and regulations of the Securities and Exchange Commission, or the SEC. Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, our accompanying condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. Our accompanying condensed consolidated financial statements reflect all adjustments, which are, in our opinion, of a normal recurring nature and necessary for a fair presentation of our financial position, results of operations and cash flows for the interim period. Interim results of operations are not necessarily indicative of the results to be expected for the full year; such results may be less favorable for the full year. Our accompanying condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements and the notes thereto included in the 2013 Annual Report on Form 10-K.
	Real Estate Investments
	During the quarter ended March 31, 2013, we had one property within our portfolio that met the criteria for classification as held for sale. Accordingly, we presented the assets and liabilities separately and included the results of operations within discontinued operations for all periods presented. Additionally, we ceased recording depreciation and amortization following the held for sale designation. During the quarter ended March 31, 2014, we determined that it is appropriate to reclassify the assets and liabilities out of held for sale in our condensed consolidated balance sheets and to include the results of operations within those of our operating properties in our condensed consolidated statement of operations for all periods presented as the property no longer meets the criteria for classification as held for sale. We measured the assets to be reclassified at the lower of their carrying amounts before they were classified as held for sale (adjusted for any depreciation and amortization expense that would have been recognized had the assets been continuously classified as held and used) or their fair value at the date of the subsequent decision not to sell. As such, we recorded $0.8 million of depreciation and amortization expense in the three months ended March 31, 2014 which represents the depreciation and amortization on the property that was not recorded when it was classified as held for sale.
	Depreciation expense of buildings and improvements for the three months ended March 31, 2014 and 2013, was $21.4 million and $18.3 million, respectively.
	Noncontrolling Interests
	HTA’s net income attributable to noncontrolling interests in the accompanying condensed consolidated statements of operations relate to both noncontrolling interest reflected within equity and redeemable noncontrolling interest of limited partners reflected outside of equity in the accompanying condensed consolidated balance sheets. Limited partner units, including LTIP awards, in HTALP are accounted for as partners’ capital in HTALP’s accompanying condensed consolidated balance sheets and as noncontrolling interest reflected within equity or redeemable noncontrolling interest of limited partners reflected outside of equity in HTA’s accompanying condensed consolidated balance sheets.
	Redeemable noncontrolling interests relate to the interests in our consolidated entities that are not wholly owned by us. As these redeemable noncontrolling interests provide for redemption features not solely within our control, we classify such interests outside of permanent equity or partners’ capital.
	Recently Issued or Adopted Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board issued Accounting Standards Updated, or ASU, 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360) which changes the requirements for reporting discontinued operations. ASU 2014-08 changes the threshold for disclosing discontinued operations and the related disclosure requirements. Pursuant to ASU 2014-08, only disposals representing a strategic shift, such as a major line of business, a major geographical area or majority equity investment, should be presented as a discontinued operation. If the disposal does qualify as a discontinued operation under ASU 2014-08, the entity will be required to provide expanded disclosures. The guidance will be applied prospectively to new disposals and new classifications of disposal groups held for sale after the effective date. ASU 2014-08 is effective for annual periods beginning on or after December 15, 2014 with early adoption permitted but only for disposals or classifications as held for sale which have not been reported in financial statements previously issued or available for issuance. We adopted ASU 2014-08 as of January 1, 2014. We believe future sales of our individual operating properties will no longer qualify as discontinued operations upon our adoption of ASU 2014-08.

Business_Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	Business Combinations
	During the three months ended March 31, 2014, we completed no acquisitions.
	The aggregate net purchase price of the acquisitions during the three months ended March 31, 2013 was allocated in the amounts set forth in the table below. Since the acquisitions were determined to be individually not significant, but material on a collective basis, the allocations for these acquisitions are set forth below in the aggregate (in thousands):
	2013 Acquisitions	Total
	Land	$	3,340
	Building and improvements	67,031
	In place leases	11,674
	Tenant relationships	6,780
	Below market leases	(296		)
	Aggregate purchase price	$	88,529
	The weighted average lives of the above acquired intangible assets and liabilities were 7.8 years and 8.3 years, respectively.

Real_Estate_Notes_Receivable

Real Estate Notes Receivable	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Real Estate Notes Receivable	'
	Real Estate Notes Receivable
	Real estate notes receivable includes four promissory notes totaling $20.0 million as of March 31, 2014 and December 31, 2013. The promissory notes are secured by medical office buildings, with interest rates ranging from 10.85% to 10.95% per annum. The promissory notes mature on June 25, 2014. We may extend the notes if they are not repaid by the maturity date. We are advised by the property owner/borrowers that the associated medical office buildings are being actively marketed for sale and the notes will be repaid upon any sale. The promissory notes have sufficient collateral coverage based on the value of the medical office buildings. The promissory notes continue to accrue interest at the same per annum rates and as of March 31, 2014 all interest payments were current.
	In addition, real estate notes receivable includes two promissory notes totaling $8.5 million as of March 31, 2014 and December 31, 2013. The promissory notes have an interest rate of 7.0% per annum and are secured by medical office buildings. We are advised by the property owner/borrowers that the properties are being actively marketed for sale and the notes will be repaid upon any sale. The promissory notes mature on October 1, 2016.
	We monitor the credit quality of our real estate notes receivable on an ongoing basis by tracking possible credit quality indicators. As of March 31, 2014, all of our real estate notes receivable are current and we have not provided for any allowance for losses or recorded any impairments. We made no purchases or sales of real estate notes receivable during the three months ended March 31, 2014.

Intangibles_Assets_and_Liabili

Intangibles Assets and Liabilities	3 Months Ended
	Mar. 31, 2014
Identified Intangibles, Net [Abstract]	'
Intangibles Assets and Liabilities	'
	Intangible Assets and Liabilities
	Intangible assets and liabilities consisted of the following as of March 31, 2014 and December 31, 2013 (in thousands, except weighted average remaining amortization period):
		March 31, 2014					December 31, 2013
		Balance			Weighted Average Remaining Amortization Period in Years		Balance			Weighted Average Remaining Amortization Period in Years	Balance Sheet Classification
	Assets:
	In place leases	$	212,609		8.4		$	213,338		8.8	Lease intangibles
	Tenant relationships	197,467			10.1		198,519			10.5	Lease intangibles
	Above market leases	26,726			5.9		26,799			6.3	Other intangibles, net
	Below market leasehold interests	37,640			68.8		37,640			68.9	Other intangibles, net
		474,442					476,296
	Accumulated amortization	(163,553		)			(151,860		)
	Total	$	310,889		16		$	324,436		15.9
	Liabilities:
	Below market leases	$	13,994		11.8		$	13,989		12.4	Intangible liabilities, net
	Above market leasehold interests	3,827			32.9		3,827			33.1	Intangible liabilities, net
		17,821					17,816
	Accumulated amortization	(6,422		)			(6,019		)
	Total	$	11,399		18.5		$	11,797		18.4
	The following is a summary of the net intangible amortization for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014			2013
	Amortization recorded against rental income related to above or below market leases	$	520		$	455
	Rental expense related to above or below market leasehold interests	148			95
	Amortization expense related to in place leases and tenant relationships	12,482			9,594

Receivables_and_Other_Assets

Receivables and Other Assets	3 Months Ended
	Mar. 31, 2014
Receivables and Other Assets [Abstract]	'
Receivables and Other Assets	'
	Receivables and Other Assets
	Receivables and other assets consisted of the following as of March 31, 2014 and December 31, 2013 (in thousands):
		March 31, 2014		December 31, 2013
	Accounts and other receivables, net	$	20,601	$	22,847
	Tenant note receivable	3,143		3,173
	Deferred financing costs, net	11,032		10,921
	Deferred leasing costs, net	13,843		13,500
	Lease inducements, net	708		771
	Straight-line rent receivables, net	49,904		47,317
	Prepaid expenses, deposits, equipment and other, net	9,156		6,683
	Derivative financial instruments - interest rate swaps	4,204		5,073
	Total	$	112,591	$	110,285
	The following is a summary of amortization of deferred leasing costs, deferred financing costs, and lease inducements for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014		2013
	Amortization expense related to deferred leasing costs	$	874	$	583
	Interest expense related to deferred financing costs	966		1,299
	Amortization recorded against rental income related to lease inducements	63		67

Debt

Debt	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	Debt consisted of the following as of March 31, 2014 and December 31, 2013 (in thousands):
		March 31, 2014		December 31, 2013
	Unsecured revolving credit facility	$	75,000	$	55,000
	Unsecured term loans	455,000		455,000
	Unsecured senior notes	300,000		300,000
	Fixed rate mortgages	371,957		373,751
	Variable rate mortgages	29,818		29,925
		1,231,775		1,213,676
	Net premium (discount)	507		565
	Total	$	1,232,282	$	1,214,241
	Unsecured Credit Agreement
	Unsecured Revolving Credit Facility
	HTA’s and HTALP’s $650.0 million unsecured revolving credit facility matures on March 29, 2016 and includes a one-year extension option, subject to certain conditions. The actual amount of credit available is a function of certain loan-to-value and debt service coverage ratios set forth in the credit facility. The maximum principal amount of the credit facility may be increased, subject to such additional financing being provided by our existing lenders or new lenders added to the unsecured revolving credit facility.
	Borrowings under the $650.0 million unsecured revolving credit facility accrue interest equal to adjusted LIBOR plus a margin ranging from 1.10% to 1.75% per annum based on our credit rating. We also pay a facility fee ranging from 0.20% to 0.50% per annum on the aggregate commitments under the unsecured revolving credit facility. As of March 31, 2014, the margin associated with our borrowings was 1.30% per annum and the facility fee was 0.25% per annum.
	Unsecured Term Loan
	On January 7, 2014, HTA and HTALP executed an amendment to the unsecured credit agreement that decreased the interest rate on the unsecured term loan and extended the maturity date. Borrowings under the $300.0 million unsecured term loan accrue interest equal to adjusted LIBOR plus a margin ranging from 1.05% to 1.95% per annum based on our credit rating. The margin associated with our borrowings as of March 31, 2014 was 1.20% per annum. We have interest rate swaps in place that fix the interest rate at 2.30% per annum, based on our current credit rating. The unsecured term loan matures on January 31, 2018 and includes a one-year extension option, subject to certain conditions.
	$155.0 million Unsecured Term Loan
	On July 20, 2012, HTALP entered into a $155.0 million unsecured term loan that is guaranteed by HTA. The loan matures on July 19, 2019 and the interest rate thereon is equal to LIBOR plus a margin ranging from 1.55% to 2.40% per annum based on our credit rating. The margin associated with the borrowings as of March 31, 2014 was 1.70% per annum. We have interest rate swaps in place that fix the interest rate at 2.99% per annum, based on our current credit rating. The maximum principal amount may be increased by us, subject to such additional financing being provided by our existing lender.
	$300.0 million Unsecured Senior Notes
	On March 28, 2013, HTALP issued $300.0 million of unsecured senior notes guaranteed solely by HTA that mature on April 15, 2023. The unsecured senior notes which are registered under the Securities Act of 1933, as amended, bear interest at 3.70% per annum payable semi-annually. The unsecured notes were offered at 99.186% of the principal amount thereof, with an effective yield to maturity of 3.80% per annum.
	Fixed and Variable Rate Mortgages
	As of March 31, 2014, HTALP and its subsidiaries had fixed and variable rate mortgages with interest rates ranging from 1.60% to 12.75% per annum and a weighted average interest rate of 5.55% per annum. Including the impact of the interest rate swap associated with our variable rate mortgage, the weighted average interest rate was 5.80% per annum.
	Future Debt Maturities
	The following table summarizes the debt maturities and scheduled principal repayments as of March 31, 2014 (in thousands):
	Year	Amount
	2014	$	5,828
	2015	73,982
	2016	197,496
	2017	100,948
	2018	312,993
	Thereafter	540,528
	Total	$	1,231,775
	The above scheduled debt maturities do not include the available extension under the unsecured credit agreement as discussed above.
	We are required by the terms of our applicable debt agreements to meet various affirmative and negative covenants that we believe are customary for these types of facilities, such as limitations on the incurrence of debt by us, and our subsidiaries that own unencumbered assets, limitations on the nature of HTALP’s business, and limitations on distributions by HTALP and its subsidiaries that own unencumbered assets. Our debt agreements also impose various financial covenants on us, such as a maximum ratio of total indebtedness to total asset value, a minimum ratio of EBITDA to fixed charges, a minimum tangible net worth covenant, a maximum ratio of unsecured indebtedness to unencumbered asset value, rent coverage ratios, and a minimum ratio of unencumbered net operating income to unsecured interest expense. As of March 31, 2014, we believe that we were in compliance with all such financial covenants and reporting requirements. In addition, certain of our debt agreements include events of default provisions that we believe are customary for these types of facilities, including restricting HTA from making dividend distributions to our stockholders in the event we are in default, except to the extent necessary for HTA to maintain its REIT status.

Derivative_Financial_Instrumen

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments
	The following table lists the derivative financial instrument assets and (liabilities) held by us as of March 31, 2014 (in thousands):
	Notional Amount			Index		Rate			Fair Value			Instrument		Maturity
	$	200,000		LIBOR		1.23	%		$	(1,989	)	Swap		3/29/17
	100,000			LIBOR		0.86			(702		)	Swap		6/15/16
	50,000			LIBOR		1.39			1,081			Swap		7/17/19
	105,000			LIBOR		1.24			3,123			Swap		7/17/19
	27,436			LIBOR		4.98			(2,334		)	Swap		5/1/20
	The following table lists the derivative financial instrument assets and (liabilities) held by us as of December 31, 2013 (in thousands):
	Notional Amount			Index		Rate			Fair Value			Instrument		Maturity
	$	200,000		LIBOR		1.23	%		$	(2,078	)	Swap		3/29/17
	100,000			LIBOR		0.86			(729		)	Swap		6/15/16
	50,000			LIBOR		1.39			1,350			Swap		7/17/19
	105,000			LIBOR		1.24			3,723			Swap		7/17/19
	27,618			LIBOR		4.98			(2,246		)	Swap		5/1/20
	As of March 31, 2014 and December 31, 2013, the gross fair value of our derivative financial instruments was as follows (in thousands):
			Asset Derivatives										Liability Derivatives
			March 31, 2014					December 31, 2013					March 31, 2014						December 31, 2013
	Derivatives Not Designated as Hedging Instruments:		Balance Sheet	Fair Value				Balance Sheet		Fair Value			Balance Sheet		Fair Value				Balance Sheet		Fair Value
			Location					Location					Location						Location
	Interest rate swaps		Receivables and other assets	$	4,204			Receivables and other assets		$	5,073		Derivative		$	5,025			Derivative		$	5,053
													financial						financial
													instruments						instruments
	There were no derivatives offset in our accompanying condensed consolidated balance sheets as of March 31, 2014 and December 31, 2013. As of March 31, 2014 and December 31, 2013, we had derivatives subject to enforceable master netting arrangements which allow for net cash settlement with the respective counterparties (in thousands):
		31-Mar-14										31-Dec-13
		Gross Amounts			Amounts Subject to Enforceable Master Netting Arrangements				Net Amounts			Gross Amounts				Amounts Subject to Enforceable Master Netting Arrangements				Net Amounts
	Asset derivatives	$	4,204		$	(1,989	)		$	2,215		$	5,073			$	(2,078	)		$	2,995
	Liability derivatives	5,025			(1,989		)		3,036			5,053				(2,078		)		2,975
	For the three months ended March 31, 2014 and 2013, the derivative financial instruments had the following effect on our accompanying condensed consolidated statements of operations (in thousands):
	Derivatives Not Designated as Hedging Instruments:		Location of Gain (Loss)	Three Months Ended March 31,
			Recognized	2014				2013
	Interest rate swaps		Net gain (loss) on change in the fair value of derivative financial instruments	$	(841	)		$	1,606
	We have agreements with each of our interest rate swap derivative counterparties that contain a provision whereby if we default on certain of our unsecured indebtedness, then our counterparties could declare us in default on our interest rate swap derivative obligations resulting in an acceleration of the indebtedness. In addition, we are exposed to credit risk in the event of non-performance by our derivative counterparties. We believe we mitigate the credit risk by entering into agreements with credit-worthy counterparties. We record counterparty credit risk valuation adjustments on interest rate swap derivative assets in order to properly reflect the credit quality of the counterparty. In addition, our fair value of interest rate swap derivative liabilities is adjusted to reflect the impact of our credit quality. As of March 31, 2014, there have been no termination events or events of default related to our interest rate swaps.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Litigation
	We are not presently subject to any material litigation nor, to our knowledge, is any material litigation threatened against us, which if determined unfavorably to us, would have a material effect on our condensed consolidated financial position, results of operations or cash flows.
	Environmental Matters
	We follow the policy of monitoring our properties for the presence of hazardous or toxic substances. While there can be no assurance that a material environmental liability does not exist at our properties, we are not currently aware of any environmental liability with respect to our properties that would have a material effect on our condensed consolidated financial position, results of operations or cash flows. Further, we are not aware of any material environmental liability or any unasserted claim or assessment with respect to an environmental liability at our properties that we believe would require additional disclosure or the recording of a loss contingency.
	Other
	Our other commitments and contingencies include the usual obligations of real estate owners and operators in the normal course of business. In our opinion, these matters are not expected to have a material effect on our consolidated financial position, results of operations or cash flows.

Stockholders_Equity_and_Partne

Stockholders' Equity and Partners' Capital	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Stockholders' Equity and Partners' Capital	'
	Stockholders’ Equity and Partners’ Capital
	HTALP’s partnership agreement provides that it will distribute cash flows from operations and net sale proceeds to its partners in accordance with their overall ownership interests at such times and in such amounts as the general partner determines. Except for certain LTIP units that have not vested, dividend distributions are made such that a holder of one LTIP unit will receive annual distributions from HTALP in an amount equal to the annual dividend distributions paid to the holder of one share of HTA’s common stock. In addition, for each share of common stock issued or redeemed by HTA, HTALP issues or redeems a corresponding number of units.
	Common Stock Offerings
	On February 28, 2014, HTA amended the at-the-market, or ATM, offering of its common stock with an aggregate sales price of up to $300.0 million primarily to add sales agents to the program. During the three months ended March 31, 2014, HTA did not issue and sell any shares of its common stock under the ATM program and, as of March 31, 2014, $300.0 million remained available for issuance.
	Stock Repurchase Plan
	During the three months ended March 31, 2014, HTA did not repurchase any shares of its common stock under the stock repurchase plan, and as of March 31, 2014, $100.0 million of repurchase capacity remained available under the plan.
	Common Stock Dividends
	See condensed consolidated statements of operations for the dividends declared during the three months ended March 31, 2014 and 2013. On April 29, 2014, HTA declared a quarterly cash dividend of $0.14375 per share to be paid on July 3, 2014 to stockholders of record of its common stock on June 27, 2014.
	Incentive Plan
	HTA’s Amended and Restated 2006 Incentive Plan, or the Plan, permits the grant of incentive awards to our employees, officers, non-employee directors, and consultants as selected by our Board of Directors or the Compensation Committee. The Plan authorizes the granting of awards in any of the following forms: options; stock appreciation rights; restricted stock; restricted or deferred stock units; performance awards; dividend equivalents; other stock-based awards, including units in HTALP; and cash-based awards. Subject to adjustment as provided in the Plan, the aggregate number of awards reserved and available for issuance under the Plan is 10,000,000. As of March 31, 2014, there were 4,633,600 awards available for grant under the Plan.
	LTIP Units
	Awards under the LTIP consist of Series C units in HTALP, and are subject to the achievement of certain performance and market conditions in order to vest. Once vested, the Series C units are converted into common units of HTALP, which may be converted into shares of HTA’s common stock. For the three months ended March 31, 2013, we recognized compensation expense related to LTIP awards of $3.1 million, which was recorded in listing expenses. The LTIP awards were fully expensed in 2013, except for approximately $4.5 million of unrecognized expense associated with 450,000 units that will only vest as a result of a change in control. We will not recognize any expense associated with these units until such event occurs or is probable.
	The following is a summary of the activity in our LTIP units during 2014:
		LTIP Units		Weighted
				Average Grant
				Date Fair Value
	Balance as of December 31, 2013	516,500		$	9.43
	Granted	—		—
	Vested	—		—
	Forfeited	—		—
	Balance as of March 31, 2014	516,500		$	9.43
	Restricted Common Stock and Units
	For the three months ended March 31, 2014, we recognized compensation expense of $1.4 million, which was recorded in general and administrative expenses. For the three months ended March 31, 2013, we recognized compensation expense of $1.2 million, of which $0.6 million was recorded in general and administrative expenses and $0.6 million in listing expenses.
	As of March 31, 2014, there was approximately $6.2 million of unrecognized compensation expense net of estimated forfeitures, which will be recognized over a remaining weighted average period of 2.3 years.
	The following is a summary of the activity in our restricted common stock during 2014:
		Restricted Common Stock		Weighted
				Average Grant
				Date Fair Value
	Balance as of December 31, 2013	641,000		$	10.34
	Granted	469,200		9.84
	Vested	(62,500	)	9.9
	Forfeited	(1,000	)	10.82
	Balance as of March 31, 2014	1,046,700		$	10.14

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	Financial Instruments Reported at Fair Value
	The table below presents our assets and liabilities measured at fair value on a recurring basis as of March 31, 2014, aggregated by the Level in the fair value hierarchy (in thousands):
			Quoted Prices in			Significant Other			Significant			Total
			Active Markets for			Observable Inputs			Unobservable Inputs
			Identical Assets			(Level 2)			(Level 3)
			and Liabilities
			(Level 1 )
	Assets:
	Derivative financial instruments		$	—		$	4,204		$	—		$	4,204
	Total assets at fair value		$	—		$	4,204		$	—		$	4,204
	Liabilities:
	Derivative financial instruments		$	—		$	5,025		$	—		$	5,025
	Total liabilities at fair value		$	—		$	5,025		$	—		$	5,025
	The table below presents our assets and liabilities measured at fair value on a recurring basis as of December 31, 2013, aggregated by the Level in the fair value hierarchy (in thousands):
			Quoted Prices in			Significant Other			Significant			Total
			Active Markets for			Observable Inputs			Unobservable Inputs
			Identical Assets			(Level 2)			(Level 3)
			and Liabilities
			(Level 1 )
	Assets:
	Derivative financial instruments		$	—		$	5,073		$	—		$	5,073
	Total assets at fair value		$	—		$	5,073		$	—		$	5,073
	Liabilities:
	Derivative financial instruments		$	—		$	5,053		$	—		$	5,053
	Total liabilities at fair value		$	—		$	5,053		$	—		$	5,053
	There have been no transfers of assets or liabilities between Levels. We will record any such transfers at the end of the reporting period in which a change of event occurs that results in a transfer. Although we have determined that the majority of the inputs used to value our interest rate swap derivatives 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 us and our counterparties. However, we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our interest rate swap derivative positions and have determined that the credit valuation adjustments are not significant to their overall valuation. As a result, we have determined that our interest rate swap derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.
	Financial Instruments Disclosed at Fair Value
	We consider the carrying values of cash and cash equivalents, accounts and other receivables (net), restricted cash and escrow deposits, and accounts payable and accrued liabilities to approximate fair value for these financial instruments because of the short period of time between origination of the instruments and their expected realization. All of these financial instruments are considered Level 2. The fair value of the real estate notes receivable and tenant note receivable are estimated by discounting expected cash flow on the notes at rates management believes similar loans would currently be made. The fair value of debt is estimated using borrowing rates available to us with similar terms and maturities. The following table sets forth the carrying value and fair value of our real estate notes receivable, tenant note receivable and debt (in thousands):
				March 31, 2014						December 31, 2013
		Fair Value Level		Carrying Amount			Fair Value			Carrying Amount			Fair Value
	Real estate notes receivable	2		$	28,520		$	28,520		$	28,520		$	28,520
	Tenant note receivable	2		3,143			3,044			3,173			3,013
	Debt, net	2		1,232,282			1,260,308			1,214,241			1,237,699

Per_Share_Data

Per Share Data	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Per Share Data	'
	Per Share Data of HTA
	HTA includes unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents as “participating securities” pursuant to the two-class method. The resulting classes are our common stock and restricted stock. For the three months ended March 31, 2014 and 2013, all of HTA’s earnings were distributed and the calculated earnings per share amount would be the same for all classes. The following is the reconciliation of the numerator and denominator used in basic and diluted earnings per share of HTA for the three months ended March 31, 2014 and 2013 (in thousands, except per share data):
		Three Months Ended March 31,
		2014			2013
	Numerator:
	Net income	$	5,434		$	1,384
	Net income attributable to noncontrolling interests	(142		)	(33		)
	Net income attributable to common stockholders	$	5,292		$	1,351
	Denominator:
	Weighted average number of shares outstanding - basic	237,287			217,103
	Dilutive shares	2,536			1,801
	Weighted average number of shares outstanding - diluted	239,823			218,904
	Earnings per common share - basic
	Net income attributable to common stockholders	$	0.02		$	0.01
	Earnings per common share - diluted
	Net income attributable to common stockholders	$	0.02		$	0.01

Per_Unit_Data_of_HTALP

Per Unit Data of HTALP	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Per Unit Data of HTALP	'
	Per Unit Data of HTALP
	The following is the reconciliation of the numerator and denominator used in basic and diluted earnings per unit of HTALP for the three months ended March 31, 2014 and 2013 (in thousands, except per unit data):
		Three Months Ended March 31,
		2014			2013
	Numerator:
	Net income	$	5,434		$	1,384
	Net income attributable to noncontrolling interests	(38		)	(25		)
	Net income attributable to common unitholders	$	5,396		$	1,359
	Denominator:
	Weighted average number of units outstanding - basic	240,340			220,159
	Dilutive units	—			—
	Weighted average number of units outstanding - diluted	240,340			220,159
	Earnings per common unit - basic:
	Net income attributable to common unitholders	$	0.02		$	0.01
	Earnings per common unit - diluted:
	Net income attributable to common unitholders	$	0.02		$	0.01

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Supplemental Cash Flow Information	'
	Supplemental Cash Flow Information
	The following is the supplemental cash flow information for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014		2013
	Interest paid	$	8,235	$	10,212
	Income taxes paid	58		76
	Supplemental Disclosure of Noncash Activities:
	Investing Activities:
	Accrued capital expenditures	$	2,272	$	1,696
	Financing Activities:
	Dividend distributions declared, but not paid	$	34,148	$	32,333
	Offering costs transferred to equity/partners’ capital	—		1,191
	Debt issuance costs	—		528

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	Our accompanying condensed consolidated financial statements include our accounts and those of our subsidiaries and any consolidated variable interest entities, or VIEs. All inter-company balances and transactions have been eliminated in the accompanying condensed consolidated financial statements.
Interim Unaudited Financial Data	'
	Interim Unaudited Financial Data
	Our accompanying condensed consolidated financial statements have been prepared by us in accordance with GAAP in conjunction with the rules and regulations of the Securities and Exchange Commission, or the SEC. Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, our accompanying condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. Our accompanying condensed consolidated financial statements reflect all adjustments, which are, in our opinion, of a normal recurring nature and necessary for a fair presentation of our financial position, results of operations and cash flows for the interim period. Interim results of operations are not necessarily indicative of the results to be expected for the full year; such results may be less favorable for the full year. Our accompanying condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements and the notes thereto included in the 2013 Annual Report on Form 10-K.
Real Estate Held For Sale	'
	Real Estate Investments
	During the quarter ended March 31, 2013, we had one property within our portfolio that met the criteria for classification as held for sale. Accordingly, we presented the assets and liabilities separately and included the results of operations within discontinued operations for all periods presented. Additionally, we ceased recording depreciation and amortization following the held for sale designation. During the quarter ended March 31, 2014, we determined that it is appropriate to reclassify the assets and liabilities out of held for sale in our condensed consolidated balance sheets and to include the results of operations within those of our operating properties in our condensed consolidated statement of operations for all periods presented as the property no longer meets the criteria for classification as held for sale. We measured the assets to be reclassified at the lower of their carrying amounts before they were classified as held for sale (adjusted for any depreciation and amortization expense that would have been recognized had the assets been continuously classified as held and used) or their fair value at the date of the subsequent decision not to sell.
Noncontrolling Interests	'
	Noncontrolling Interests
	HTA’s net income attributable to noncontrolling interests in the accompanying condensed consolidated statements of operations relate to both noncontrolling interest reflected within equity and redeemable noncontrolling interest of limited partners reflected outside of equity in the accompanying condensed consolidated balance sheets. Limited partner units, including LTIP awards, in HTALP are accounted for as partners’ capital in HTALP’s accompanying condensed consolidated balance sheets and as noncontrolling interest reflected within equity or redeemable noncontrolling interest of limited partners reflected outside of equity in HTA’s accompanying condensed consolidated balance sheets.
	Redeemable noncontrolling interests relate to the interests in our consolidated entities that are not wholly owned by us. As these redeemable noncontrolling interests provide for redemption features not solely within our control, we classify such interests outside of permanent equity or partners’ capital.
Recently Issued or Adopted Accounting Pronouncements	'
	Recently Issued or Adopted Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board issued Accounting Standards Updated, or ASU, 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360) which changes the requirements for reporting discontinued operations. ASU 2014-08 changes the threshold for disclosing discontinued operations and the related disclosure requirements. Pursuant to ASU 2014-08, only disposals representing a strategic shift, such as a major line of business, a major geographical area or majority equity investment, should be presented as a discontinued operation. If the disposal does qualify as a discontinued operation under ASU 2014-08, the entity will be required to provide expanded disclosures. The guidance will be applied prospectively to new disposals and new classifications of disposal groups held for sale after the effective date. ASU 2014-08 is effective for annual periods beginning on or after December 15, 2014 with early adoption permitted but only for disposals or classifications as held for sale which have not been reported in financial statements previously issued or available for issuance. We adopted ASU 2014-08 as of January 1, 2014. We believe future sales of our individual operating properties will no longer qualify as discontinued operations upon our adoption of ASU 2014-08.

Business_Combinations_Tables

Business Combinations (Tables)	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Schedule of Purchase Price Allocation	'
	The aggregate net purchase price of the acquisitions during the three months ended March 31, 2013 was allocated in the amounts set forth in the table below. Since the acquisitions were determined to be individually not significant, but material on a collective basis, the allocations for these acquisitions are set forth below in the aggregate (in thousands):
	2013 Acquisitions	Total
	Land	$	3,340
	Building and improvements	67,031
	In place leases	11,674
	Tenant relationships	6,780
	Below market leases	(296		)
	Aggregate purchase price	$	88,529

Intangibles_Assets_and_Liabili1

Intangibles Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
Identified Intangibles, Net [Abstract]	'
Schedule of Identified Intangible Assets and Liabilities, Net	'
	Intangible assets and liabilities consisted of the following as of March 31, 2014 and December 31, 2013 (in thousands, except weighted average remaining amortization period):
		March 31, 2014					December 31, 2013
		Balance			Weighted Average Remaining Amortization Period in Years		Balance			Weighted Average Remaining Amortization Period in Years	Balance Sheet Classification
	Assets:
	In place leases	$	212,609		8.4		$	213,338		8.8	Lease intangibles
	Tenant relationships	197,467			10.1		198,519			10.5	Lease intangibles
	Above market leases	26,726			5.9		26,799			6.3	Other intangibles, net
	Below market leasehold interests	37,640			68.8		37,640			68.9	Other intangibles, net
		474,442					476,296
	Accumulated amortization	(163,553		)			(151,860		)
	Total	$	310,889		16		$	324,436		15.9
	Liabilities:
	Below market leases	$	13,994		11.8		$	13,989		12.4	Intangible liabilities, net
	Above market leasehold interests	3,827			32.9		3,827			33.1	Intangible liabilities, net
		17,821					17,816
	Accumulated amortization	(6,422		)			(6,019		)
	Total	$	11,399		18.5		$	11,797		18.4
Summary of Intangible Asset and Liabilities Amortization	'
	The following is a summary of the net intangible amortization for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014			2013
	Amortization recorded against rental income related to above or below market leases	$	520		$	455
	Rental expense related to above or below market leasehold interests	148			95
	Amortization expense related to in place leases and tenant relationships	12,482			9,594

Receivables_and_Other_Assets_T

Receivables and Other Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Receivables and Other Assets [Abstract]	'
Schedule of Receivables and Other Assets	'
	Receivables and other assets consisted of the following as of March 31, 2014 and December 31, 2013 (in thousands):
		March 31, 2014		December 31, 2013
	Accounts and other receivables, net	$	20,601	$	22,847
	Tenant note receivable	3,143		3,173
	Deferred financing costs, net	11,032		10,921
	Deferred leasing costs, net	13,843		13,500
	Lease inducements, net	708		771
	Straight-line rent receivables, net	49,904		47,317
	Prepaid expenses, deposits, equipment and other, net	9,156		6,683
	Derivative financial instruments - interest rate swaps	4,204		5,073
	Total	$	112,591	$	110,285
Schedule of Receivables and Other Assets Amortization Expense	'
	The following is a summary of amortization of deferred leasing costs, deferred financing costs, and lease inducements for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014		2013
	Amortization expense related to deferred leasing costs	$	874	$	583
	Interest expense related to deferred financing costs	966		1,299
	Amortization recorded against rental income related to lease inducements	63		67

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Schedule of Debt	'
	Debt consisted of the following as of March 31, 2014 and December 31, 2013 (in thousands):
		March 31, 2014		December 31, 2013
	Unsecured revolving credit facility	$	75,000	$	55,000
	Unsecured term loans	455,000		455,000
	Unsecured senior notes	300,000		300,000
	Fixed rate mortgages	371,957		373,751
	Variable rate mortgages	29,818		29,925
		1,231,775		1,213,676
	Net premium (discount)	507		565
	Total	$	1,232,282	$	1,214,241
Schedule of Maturities of Long-term Debt	'
	The following table summarizes the debt maturities and scheduled principal repayments as of March 31, 2014 (in thousands):
	Year	Amount
	2014	$	5,828
	2015	73,982
	2016	197,496
	2017	100,948
	2018	312,993
	Thereafter	540,528
	Total	$	1,231,775

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	The following table lists the derivative financial instrument assets and (liabilities) held by us as of March 31, 2014 (in thousands):
	Notional Amount			Index		Rate			Fair Value			Instrument		Maturity
	$	200,000		LIBOR		1.23	%		$	(1,989	)	Swap		3/29/17
	100,000			LIBOR		0.86			(702		)	Swap		6/15/16
	50,000			LIBOR		1.39			1,081			Swap		7/17/19
	105,000			LIBOR		1.24			3,123			Swap		7/17/19
	27,436			LIBOR		4.98			(2,334		)	Swap		5/1/20
	The following table lists the derivative financial instrument assets and (liabilities) held by us as of December 31, 2013 (in thousands):
	Notional Amount			Index		Rate			Fair Value			Instrument		Maturity
	$	200,000		LIBOR		1.23	%		$	(2,078	)	Swap		3/29/17
	100,000			LIBOR		0.86			(729		)	Swap		6/15/16
	50,000			LIBOR		1.39			1,350			Swap		7/17/19
	105,000			LIBOR		1.24			3,723			Swap		7/17/19
	27,618			LIBOR		4.98			(2,246		)	Swap		5/1/20
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location	'
	As of March 31, 2014 and December 31, 2013, the gross fair value of our derivative financial instruments was as follows (in thousands):
			Asset Derivatives										Liability Derivatives
			March 31, 2014					December 31, 2013					March 31, 2014						December 31, 2013
	Derivatives Not Designated as Hedging Instruments:		Balance Sheet	Fair Value				Balance Sheet		Fair Value			Balance Sheet		Fair Value				Balance Sheet		Fair Value
			Location					Location					Location						Location
	Interest rate swaps		Receivables and other assets	$	4,204			Receivables and other assets		$	5,073		Derivative		$	5,025			Derivative		$	5,053
													financial						financial
													instruments						instruments
	There were no derivatives offset in our accompanying condensed consolidated balance sheets as of March 31, 2014 and December 31, 2013. As of March 31, 2014 and December 31, 2013, we had derivatives subject to enforceable master netting arrangements which allow for net cash settlement with the respective counterparties (in thousands):
		31-Mar-14										31-Dec-13
		Gross Amounts			Amounts Subject to Enforceable Master Netting Arrangements				Net Amounts			Gross Amounts				Amounts Subject to Enforceable Master Netting Arrangements				Net Amounts
	Asset derivatives	$	4,204		$	(1,989	)		$	2,215		$	5,073			$	(2,078	)		$	2,995
	Liability derivatives	5,025			(1,989		)		3,036			5,053				(2,078		)		2,975
	For the three months ended March 31, 2014 and 2013, the derivative financial instruments had the following effect on our accompanying condensed consolidated statements of operations (in thousands):
	Derivatives Not Designated as Hedging Instruments:		Location of Gain (Loss)	Three Months Ended March 31,
			Recognized	2014				2013
	Interest rate swaps		Net gain (loss) on change in the fair value of derivative financial instruments	$	(841	)		$	1,606

Stockholders_Equity_and_Partne1

Stockholders' Equity and Partners' Capital (Tables)	3 Months Ended
	Mar. 31, 2014
LTIP	'
Class of Stock	'
Schedule of Nonvested Share Activity	'
	The following is a summary of the activity in our LTIP units during 2014:
		LTIP Units		Weighted
				Average Grant
				Date Fair Value
	Balance as of December 31, 2013	516,500		$	9.43
	Granted	—		—
	Vested	—		—
	Forfeited	—		—
	Balance as of March 31, 2014	516,500		$	9.43
Restricted Stock	'
Class of Stock	'
Schedule of Nonvested Share Activity	'
	The following is a summary of the activity in our restricted common stock during 2014:
		Restricted Common Stock		Weighted
				Average Grant
				Date Fair Value
	Balance as of December 31, 2013	641,000		$	10.34
	Granted	469,200		9.84
	Vested	(62,500	)	9.9
	Forfeited	(1,000	)	10.82
	Balance as of March 31, 2014	1,046,700		$	10.14

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	'
	The table below presents our assets and liabilities measured at fair value on a recurring basis as of March 31, 2014, aggregated by the Level in the fair value hierarchy (in thousands):
			Quoted Prices in			Significant Other			Significant			Total
			Active Markets for			Observable Inputs			Unobservable Inputs
			Identical Assets			(Level 2)			(Level 3)
			and Liabilities
			(Level 1 )
	Assets:
	Derivative financial instruments		$	—		$	4,204		$	—		$	4,204
	Total assets at fair value		$	—		$	4,204		$	—		$	4,204
	Liabilities:
	Derivative financial instruments		$	—		$	5,025		$	—		$	5,025
	Total liabilities at fair value		$	—		$	5,025		$	—		$	5,025
	The table below presents our assets and liabilities measured at fair value on a recurring basis as of December 31, 2013, aggregated by the Level in the fair value hierarchy (in thousands):
			Quoted Prices in			Significant Other			Significant			Total
			Active Markets for			Observable Inputs			Unobservable Inputs
			Identical Assets			(Level 2)			(Level 3)
			and Liabilities
			(Level 1 )
	Assets:
	Derivative financial instruments		$	—		$	5,073		$	—		$	5,073
	Total assets at fair value		$	—		$	5,073		$	—		$	5,073
	Liabilities:
	Derivative financial instruments		$	—		$	5,053		$	—		$	5,053
	Total liabilities at fair value		$	—		$	5,053		$	—		$	5,053
Schedule of Fair Value of Financial Instruments	'
	The following table sets forth the carrying value and fair value of our real estate notes receivable, tenant note receivable and debt (in thousands):
				March 31, 2014						December 31, 2013
		Fair Value Level		Carrying Amount			Fair Value			Carrying Amount			Fair Value
	Real estate notes receivable	2		$	28,520		$	28,520		$	28,520		$	28,520
	Tenant note receivable	2		3,143			3,044			3,173			3,013
	Debt, net	2		1,232,282			1,260,308			1,214,241			1,237,699

Per_Share_Data_Tables

Per Share Data (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted	'
	The following is the reconciliation of the numerator and denominator used in basic and diluted earnings per share of HTA for the three months ended March 31, 2014 and 2013 (in thousands, except per share data):
		Three Months Ended March 31,
		2014			2013
	Numerator:
	Net income	$	5,434		$	1,384
	Net income attributable to noncontrolling interests	(142		)	(33		)
	Net income attributable to common stockholders	$	5,292		$	1,351
	Denominator:
	Weighted average number of shares outstanding - basic	237,287			217,103
	Dilutive shares	2,536			1,801
	Weighted average number of shares outstanding - diluted	239,823			218,904
	Earnings per common share - basic
	Net income attributable to common stockholders	$	0.02		$	0.01
	Earnings per common share - diluted
	Net income attributable to common stockholders	$	0.02		$	0.01

Per_Unit_Data_of_HTALP_Tables

Per Unit Data of HTALP (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Unit, Basic and Diluted	'
	The following is the reconciliation of the numerator and denominator used in basic and diluted earnings per unit of HTALP for the three months ended March 31, 2014 and 2013 (in thousands, except per unit data):
		Three Months Ended March 31,
		2014			2013
	Numerator:
	Net income	$	5,434		$	1,384
	Net income attributable to noncontrolling interests	(38		)	(25		)
	Net income attributable to common unitholders	$	5,396		$	1,359
	Denominator:
	Weighted average number of units outstanding - basic	240,340			220,159
	Dilutive units	—			—
	Weighted average number of units outstanding - diluted	240,340			220,159
	Earnings per common unit - basic:
	Net income attributable to common unitholders	$	0.02		$	0.01
	Earnings per common unit - diluted:
	Net income attributable to common unitholders	$	0.02		$	0.01

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Schedule of Cash Flow, Supplemental Disclosures	'
	The following is the supplemental cash flow information for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014		2013
	Interest paid	$	8,235	$	10,212
	Income taxes paid	58		76
	Supplemental Disclosure of Noncash Activities:
	Investing Activities:
	Accrued capital expenditures	$	2,272	$	1,696
	Financing Activities:
	Dividend distributions declared, but not paid	$	34,148	$	32,333
	Offering costs transferred to equity/partners’ capital	—		1,191
	Debt issuance costs	—		528

Organization_and_Description_o1

Organization and Description of Business (Details) (USD $)	3 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2014
Significant Acquisitions and Disposals	'
General partnership interest percentage	98.94%
Purchased property inception to current date	$3
Medical Office Buildings	'
Significant Acquisitions and Disposals	'
Number of real estate properties	269
Healthcare Industry Facilities	'
Significant Acquisitions and Disposals	'
Number of real estate properties	19

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Accounting Policies [Abstract]	'	'
Number of properties held-for-sale	'	1
Property, Plant and Equipment [Line Items]	'	'
Depreciation on reclassified assets	$0.80	'
Building and Improvements	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation expense	$21.40	$18.30

Business_Combinations_Details

Business Combinations (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
	Acquisitions	2012 Acquisitions
Business Acquisition	'	'
Number of acquisitions	0	'
Business Acquisition, Purchase Price Allocation, Real Estate [Abstract]	'	'
Land	'	$3,340
Building and improvements	'	67,031
In place leases	'	11,674
Tenant relationships	'	6,780
Below market leases	'	-296
Aggregate purchase price	'	$88,529
Weighted average lives of acquired intangible assets	'	'7 years 9 months 18 days
Weighted average lives of acquired intangible liabilities	'	'8 years 3 months 18 days

Real_Estate_Notes_Receivable_D

Real Estate Notes Receivable (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
	promissory_notes	promissory_notes
Portfolio One	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Number of promissory notes secured by office buildings	4	4
Total real estate notes receivable	$20	$20
Interest rate, minimum	10.85%	'
Interest rate, maximum	10.95%	'
Portfolio Two	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Number of promissory notes secured by office buildings	2	2
Total real estate notes receivable	$8.50	$8.50
Interest rate	7.00%	'

Intangibles_Assets_and_Liabili2

Intangibles Assets and Liabilities (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets	'	'
Gross	$474,442	$476,296
Accumulated amortization	-163,553	-151,860
Total	310,889	324,436
Weighted average remaining amortization period in years	'16 years	'15 years 10 months 24 days
Liabilities	'	'
Gross	17,821	17,816
Accumulated amortization	-6,422	-6,019
Total	11,399	11,797
Weighted average remaining amortization period in years	'18 years 6 months	'18 years 4 months 24 days
Below Market Leases	'	'
Liabilities	'	'
Gross	13,994	13,989
Weighted average remaining amortization period in years	'11 years 9 months 18 days	'12 years 4 months 24 days
Above Market Leasehold Interests	'	'
Liabilities	'	'
Gross	3,827	3,827
Weighted average remaining amortization period in years	'32 years 10 months 24 days	'33 years 1 month 6 days
In Place Leases	'	'
Assets	'	'
Gross	212,609	213,338
Weighted average remaining amortization period in years	'8 years 4 months 24 days	'8 years 9 months 18 days
Tenant Relationships	'	'
Assets	'	'
Gross	197,467	198,519
Weighted average remaining amortization period in years	'10 years 1 month 6 days	'10 years 6 months
Above Market Leases	'	'
Assets	'	'
Gross	26,726	26,799
Weighted average remaining amortization period in years	'5 years 10 months 24 days	'6 years 3 months 18 days
Below Market Leasehold Interests	'	'
Assets	'	'
Gross	$37,640	$37,640
Weighted average remaining amortization period in years	'68 years 9 months 18 days	'68 years 10 months 24 days

Intangibles_Assets_and_Liabili3

Intangibles Assets and Liabilities - Summary of Intangible Amortization (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Amortization recorded against rental income related to above or below market leases	'	'
Finite-Lived Intangibles	'	'
Amortization of intangible assets and liabilities	$520	$455
Rental expense related to above or below market leasehold interests	'	'
Finite-Lived Intangibles	'	'
Amortization of intangible assets and liabilities	148	95
Amortization expense related to in place leases and tenant relationships	'	'
Finite-Lived Intangibles	'	'
Amortization of intangible assets and liabilities	$12,482	$9,594

Receivables_and_Other_Assets_D

Receivables and Other Assets (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Receivables and Other Assets [Abstract]	'	'	'
Accounts and other receivables, net	$20,601	'	$22,847
Tenant note receivable	3,143	'	3,173
Deferred financing costs, net	11,032	'	10,921
Deferred leasing costs, net	13,843	'	13,500
Lease inducements, net	708	'	771
Straight-line rent receivables, net	49,904	'	47,317
Prepaid expenses, deposits, equipment and other, net	9,156	'	6,683
Derivative financial instruments - interest rate swaps	4,204	'	5,073
Total	112,591	'	110,285
Amortization expense related to deferred leasing costs	874	583	'
Interest expense related to deferred financing costs	966	1,299	'
Amortization recorded against rental income related to lease inducements	$63	$67	'

Debt_Net_Details

Debt - Net (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument	'	'
Total debt, gross	$1,231,775	$1,213,676
Net premium (discount)	507	565
Total	1,232,282	1,214,241
Unsecured Term Loans	'	'
Debt Instrument	'	'
Total debt, gross	455,000	455,000
Unsecured Senior Notes	'	'
Debt Instrument	'	'
Total debt, gross	300,000	300,000
Mortgages | Fixed Rate Mortgages	'	'
Debt Instrument	'	'
Total debt, gross	371,957	373,751
Mortgages | Variable Rate Mortgages	'	'
Debt Instrument	'	'
Total debt, gross	29,818	29,925
Unsecured Revolving Credit Facility	'	'
Debt Instrument	'	'
Line of credit facility, amount outstanding	$75,000	$55,000

Debt_Principal_Maturity_Schedu

Debt - Principal Maturity Schedule (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
2014	$5,828	'
2015	73,982	'
2016	197,496	'
2017	100,948	'
2018	312,993	'
Thereafter	540,528	'
Total	$1,231,775	$1,213,676

Debt_Textuals_Details

Debt - Textuals (Details) (USD $)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 07, 2013

Mar. 29, 2012

Mar. 31, 2014

Mar. 07, 2013

Mar. 07, 2013

Mar. 29, 2012

Mar. 31, 2014

Mar. 29, 2012

Mar. 29, 2012

Mar. 31, 2014

Mar. 31, 2014

Jul. 20, 2012

Jul. 20, 2012

Jul. 20, 2012

Mar. 31, 2014

Mar. 28, 2013

Mar. 31, 2014

Dec. 31, 2013

Mortgages

Unsecured Revolving Credit Facility

Unsecured Revolving Credit Facility

Unsecured Revolving Credit Facility

Unsecured Revolving Credit Facility

Unsecured Revolving Credit Facility

Unsecured Term Loans

Unsecured Term Loans

Unsecured Term Loans

Unsecured Term Loans

Unsecured Term Loans

Unsecured Term Loans

Unsecured Term Loans

Unsecured Term Loans

Unsecured Term Loans

Unsecured Term Loans

Unsecured Senior Notes

Variable Rate Mortgages

Variable Rate Mortgages

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc.

JPMorgan Securities, LLC, Wells Fargo Securities, LLC and Deutsche Bank Securities Inc., With Interest Rate Swap

Wells Fargo

Wells Fargo

Wells Fargo

Wells Fargo

Wells Fargo, With Interest Rate Swap

Mortgages

Mortgages

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Debt Instrument

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, borrowing capacity

'

'

'

$650,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt

$1,231,775,000

$1,213,676,000

'

'

'

'

'

'

$300,000,000

'

'

'

'

'

$155,000,000

'

'

'

$300,000,000

$29,818,000

$29,925,000

Unsecured credit agreement, extension option period

'

'

'

'

'1 year

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

Description of variable rate basis

'

'

'

'LIBOR

'

'

'

'

'LIBOR

'

'

'

'

'

'

'

'

'

'

'

'

Basis spread on variable rate

'

'

'

'

'

1.30%

1.10%

1.75%

'

1.20%

1.05%

1.95%

'

1.70%

'

1.55%

2.40%

'

'

'

'

Line of credit facility, unused capacity, commitment fee percentage

'

'

'

'

'

0.25%

0.20%

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, effective interest rate

'

'

'

'

'

'

'

'

'

'

'

'

2.30%

'

'

'

'

2.99%

3.80%

'

'

Debt instrument, stated interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.70%

'

'

Debt instrument, percentage of principal amount received

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

99.19%

'

'

Effective percentage rate range, minimum

'

'

1.60%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Effective percentage rate range, maximum

'

'

12.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average interest rate

'

'

5.55%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average interest rate with interest rate swap impact

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.80%

'

Derivative_Financial_Instrumen2

Derivative Financial Instruments - Table of Derivative Financial Instruments (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Derivative	'	'
Fair value, liability	($5,025)	($5,053)
Fair value, asset	4,204	5,073
Interest Rate Swap | 1.23%	'	'
Derivative	'	'
Notional Amount	200,000	200,000
Index	'LIBOR	'LIBOR
Rate	1.23%	1.23%
Fair value, liability	-1,989	-2,078
Interest Rate Swap | 0.86%	'	'
Derivative	'	'
Notional Amount	100,000	100,000
Index	'LIBOR	'LIBOR
Rate	0.86%	0.86%
Fair value, liability	-702	-729
Interest Rate Swap | 1.39%	'	'
Derivative	'	'
Notional Amount	50,000	50,000
Index	'LIBOR	'LIBOR
Rate	1.39%	1.39%
Fair value, asset	1,081	1,350
Interest Rate Swap | 1.24%	'	'
Derivative	'	'
Notional Amount	105,000	105,000
Index	'LIBOR	'LIBOR
Rate	1.24%	1.24%
Fair value, asset	3,123	3,723
Interest Rate Swap | 4.98%	'	'
Derivative	'	'
Notional Amount	27,436	27,618
Index	'LIBOR	'LIBOR
Rate	4.98%	4.98%
Fair value, liability	($2,334)	($2,246)

Derivative_Financial_Instrumen3

Derivative Financial Instruments - Derivative Instruments Fair Value Table (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivatives, Fair Value	'	'
Derivative financial instruments, asset	$4,204	$5,073
Derivative financial instruments, liability	5,025	5,053
Interest Rate Swap | Not Designated as Hedging Instrument | Receivables and Other Assets	'	'
Derivatives, Fair Value	'	'
Derivative financial instruments, asset	4,204	5,073
Interest Rate Swap | Not Designated as Hedging Instrument | Derivative Financial Instruments	'	'
Derivatives, Fair Value	'	'
Derivative financial instruments, liability	$5,025	$5,053

Derivative_Financial_Instrumen4

Derivative Financial Instruments - Derivative Offsetting (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'	'
Derivative financial instruments, asset	$4,204	$5,073
Derivative assets, amounts subject to enforceable master netting arrangements	-1,989	-2,078
Derivative assets, net amounts	2,215	2,995
Derivative liabilities	5,025	5,053
Derivative liabilities, amounts subject to enforceable master netting arrangements	-1,989	-2,078
Derivative liabilities, net amounts	$3,036	$2,975

Derivative_Financial_Instrumen5

Derivative Financial Instruments - Recognized Gain (Loss) (Details) (Not Designated as Hedging Instrument, Interest Rate Swap, Interest Expense, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Not Designated as Hedging Instrument | Interest Rate Swap | Interest Expense	'	'
Derivative Instruments, Gain (Loss)	'	'
Net gain (loss) on change in the fair value of derivative financial instruments	($841)	$1,606

Stockholders_Equity_and_Partne2

Stockholders' Equity and Partners' Capital (Details) (USD $)	3 Months Ended							0 Months Ended		3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2014	Apr. 29, 2014	Feb. 28, 2014	Mar. 31, 2013	Mar. 31, 2014
			Restricted Common Stock and Units	Restricted Common Stock and Units	General and Administrative Expense	Listing Expenses	2006 Incentive Plan	Subsequent Event	Common Stock Offering	LTIP	LTIP
					Restricted Common Stock and Units	Restricted Common Stock and Units			Maximum	Listing Expenses	Change in Control of Company
Common Stock Offerings	'	'	'	'	'	'	'	'	'	'	'
Maximum amount of common stock authorized	$300,000,000	'	'	'	'	'	'	'	$300,000,000	'	'
Stock Repurchase Plan	'	'	'	'	'	'	'	'	'	'	'
Stock repurchase program, remaining authorized repurchase amount	100,000,000	'	'	'	'	'	'	'	'	'	'
Common Stock Dividends	'	'	'	'	'	'	'	'	'	'	'
Dividends declared per common share (usd per share)	$0.14	$0.14	'	'	'	'	'	$0.14	'	'	'
Incentive Plan	'	'	'	'	'	'	'	'	'	'	'
Number of shares authorized	'	'	'	'	'	'	10,000,000	'	'	'	'
Number of shares available for grant	'	'	'	'	'	'	4,633,600	'	'	'	'
Allocated share-based compensation expense	'	'	1,400,000	1,200,000	600,000	600,000	'	'	'	3,100,000	'
Nonvested awards, total compensation cost not yet recognized	'	'	$6,200,000	'	'	'	'	'	'	'	$4,500,000
Contingent units	'	'	'	'	'	'	'	'	'	'	450,000
Period for recognition	'	'	'2 years 3 months 18 days	'	'	'	'	'	'	'	'

Stockholders_Equity_and_Partne3

Stockholders' Equity and Partners' Capital - Nonvested Rollforward (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
LTIP	'
Stocks/Units:	'
Balance as of beginning of period (in shares)	516,500
Granted (in shares)	0
Vested (in shares)	0
Forfeited (in shares)	0
Balance as of end of period (in shares)	516,500
Weighted Average Grant Date Fair Value:	'
Balance as of beginning of period (usd per share)	$9.43
Granted (usd per share)	$0
Vested (usd per share)	$0
Forfeited (usd per share)	$0
Balance as of end of period (usd per share)	$9.43
Restricted Stock	'
Stocks/Units:	'
Balance as of beginning of period (in shares)	641,000
Granted (in shares)	469,200
Vested (in shares)	-62,500
Forfeited (in shares)	-1,000
Balance as of end of period (in shares)	1,046,700
Weighted Average Grant Date Fair Value:	'
Balance as of beginning of period (usd per share)	$10.34
Granted (usd per share)	$9.84
Vested (usd per share)	$9.90
Forfeited (usd per share)	$10.82
Balance as of end of period (usd per share)	$10.14

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Assets and Liabilities at Fair Value (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'
Derivative financial instruments, asset	$4,204	$5,073
Derivative financial instruments, liability	5,025	5,053
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 )	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'
Derivative financial instruments, asset	0	0
Total assets at fair value	0	0
Derivative financial instruments, liability	0	0
Total liabilities at fair value	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'
Derivative financial instruments, asset	4,204	5,073
Total assets at fair value	4,204	5,073
Derivative financial instruments, liability	5,025	5,053
Total liabilities at fair value	5,025	5,053
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'
Derivative financial instruments, asset	0	0
Total assets at fair value	0	0
Derivative financial instruments, liability	0	0
Total liabilities at fair value	0	0
Fair Value, Measurements, Recurring | Total	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'
Derivative financial instruments, asset	4,204	5,073
Total assets at fair value	4,204	5,073
Derivative financial instruments, liability	5,025	5,053
Total liabilities at fair value	$5,025	$5,053

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'
Real estate notes receivable	$28,520	$28,520
Tenant note receivable	3,143	3,173
Debt, net	1,232,282	1,214,241
Carrying Amount | Fair Value Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'
Real estate notes receivable	28,520	28,520
Tenant note receivable	3,143	3,173
Debt, net	1,232,282	1,214,241
Fair Value | Fair Value Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'
Real estate notes receivable	28,520	28,520
Tenant note receivable	3,044	3,013
Debt, net	$1,260,308	$1,237,699

Per_Share_Data_Details

Per Share Data (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Numerator:	'	'
Net income	$5,434	$1,384
Net income attributable to noncontrolling interests	-142	-33
Net income attributable to common stockholders/unitholders	$5,292	$1,351
Denominator:	'	'
Weighted average number of shares/units outstanding — basic	237,287	217,103
Dilutive shares	2,536	1,801
Weighted average number of shares/units outstanding — diluted	239,823	218,904
Earnings per common share - basic	'	'
Net income attributable to common stockholders (usd per share)	$0.02	$0.01
Earnings per common share - diluted	'	'
Net income attributable to common stockholders (usd per share)	$0.02	$0.01

Per_Unit_Data_of_HTALP_Details

Per Unit Data of HTALP (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Numerator:	'	'
Net income	$5,434	$1,384
Net income attributable to noncontrolling interests	-142	-33
Net income attributable to common stockholders/unitholders	5,292	1,351
Denominator:	'	'
Weighted average number of shares/units outstanding — basic	237,287	217,103
Dilutive units	2,536	1,801
Weighted average number of shares/units outstanding — diluted	239,823	218,904
Earnings per common unit - basic:	'	'
Net income attributable to common unitholders (usd per share)	$0.02	$0.01
Earnings per common unit - diluted:	'	'
Net income attributable to common unitholders (usd per share)	$0.02	$0.01
Healthcare Trust of America Holdings, LP (HTALP)	'	'
Numerator:	'	'
Net income	5,434	1,384
Net income attributable to noncontrolling interests	-38	-25
Net income attributable to common stockholders/unitholders	$5,396	$1,359
Denominator:	'	'
Weighted average number of shares/units outstanding — basic	240,340	220,159
Dilutive units	0	0
Weighted average number of shares/units outstanding — diluted	240,340	220,159
Earnings per common unit - basic:	'	'
Net income attributable to common unitholders (usd per share)	$0.02	$0.01
Earnings per common unit - diluted:	'	'
Net income attributable to common unitholders (usd per share)	$0.02	$0.01

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Supplemental Disclosure of Cash Flow Information:	'	'
Interest paid	$8,235	$10,212
Income taxes paid	58	76
Investing Activities:	'	'
Accrued capital expenditures	2,272	1,696
Financing Activities:	'	'
Dividend distributions declared, but not paid	34,148	32,333
Offering costs transferred to equity/partners’ capital	0	1,191
Debt issuance costs	$0	$528