Represents the number of mortgage loans collateralized by a MOB property.

No definition available.

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- Definition

The number of real estate properties serving as collateral for debt as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower and amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

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Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Details

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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Balance Type:	debit
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- Definition

The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 3

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28567-108399

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(d))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

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Indebtedness (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Unsecured Debt	Dec. 31, 2012 Unsecured Debt	Dec. 31, 2013 Senior unsecured notes 4.30%	Dec. 31, 2012 Senior unsecured notes 4.30%	Dec. 31, 2013 Senior unsecured notes 6.75%	Dec. 31, 2012 Senior unsecured notes 6.75%	Jul. 31, 2012 Senior unsecured notes 6.75%	Dec. 31, 2013 Senior unsecured notes 6.75% maturing in 2021	Dec. 31, 2012 Senior unsecured notes 6.75% maturing in 2021	Dec. 31, 2013 Senior unsecured notes 5.625% due in 2042	Dec. 31, 2012 Senior unsecured notes 5.625% due in 2042	Jul. 31, 2012 Senior unsecured notes 5.625% due in 2042	Dec. 31, 2013 Secured and Other Debt property	Dec. 31, 2012 Secured and Other Debt	Dec. 31, 2013 Mortgages 6.11% maturing in Dec 2013	Dec. 31, 2012 Mortgages 6.11% maturing in Dec 2013	Dec. 31, 2013 Mortgage 6.91% maturing in Dec 2013	Dec. 31, 2012 Mortgage 6.91% maturing in Dec 2013	Dec. 31, 2013 Mortgage 5.83% maturing in June 2014 property	Dec. 31, 2012 Mortgage 5.83% maturing in June 2014	Dec. 31, 2013 Mortgage 6.02% maturing in March 2015 item	Dec. 31, 2012 Mortgage 6.02% maturing in March 2015	Dec. 31, 2013 Mortgage 6.25% maturing in May 2015 item	Dec. 31, 2013 Mortgage 5.65% maturing in June 2015 property	Dec. 31, 2012 Mortgage 5.65% maturing in June 2015	Dec. 31, 2013 Mortgage 6.37% maturing in July 2015 item	Dec. 31, 2012 Mortgage 6.37% maturing in July 2015	Dec. 31, 2013 Mortgage 5.66% maturing in July 2015 property	Dec. 31, 2012 Mortgage 5.66% maturing in July 2015	Dec. 31, 2013 Mortgage 5.880% maturing in July 2015 property	Dec. 31, 2012 Mortgage 5.880% maturing in July 2015	Dec. 31, 2013 Mortgage 5.81% maturing in October 2015 property	Dec. 31, 2012 Mortgage 5.81% maturing in October 2015	Dec. 31, 2013 Mortgage 5.810% maturing in October 2015, Two property	Dec. 31, 2012 Mortgage 5.810% maturing in October 2015, Two	Dec. 31, 2013 Mortgage 5.64% maturing in January 2016 property	Dec. 31, 2012 Mortgage 5.64% maturing in January 2016	Dec. 31, 2013 Mortgage 5.97% maturing in April 2016 property	Dec. 31, 2012 Mortgage 5.97% maturing in April 2016	Dec. 31, 2013 Mortgage 5.92% maturing in November 2016 property	Dec. 31, 2012 Mortgage 5.92% maturing in November 2016	Dec. 31, 2013 Mortgage 6.25% maturing in November 2016 property	Dec. 31, 2012 Mortgage 6.25% maturing in November 2016	Dec. 31, 2013 Mortgage 5.86% maturing in March 2017 property	Dec. 31, 2012 Mortgage 5.86% maturing in March 2017	Dec. 31, 2013 Mortgages 6.54% maturing in May 2017 property	Dec. 31, 2012 Mortgages 6.54% maturing in May 2017	Dec. 31, 2013 Mortgages 6.150% maturing in August 2017 property	Dec. 31, 2012 Mortgages 6.150% maturing in August 2017	Dec. 31, 2013 Mortgages 6.73% maturing in April 2018 property	Dec. 31, 2012 Mortgages 6.73% maturing in April 2018	Dec. 31, 2013 Mortgage 6.71% maturing in Sept 2019 property	Dec. 31, 2012 Mortgage 6.71% maturing in Sept 2019	Dec. 31, 2013 Mortgage 7.31% maturing in Jan 2022 property	Dec. 31, 2012 Mortgage 7.31% maturing in Jan 2022	Jul. 31, 2008 Mortgage 7.31% maturing in Jan 2022 item	Dec. 31, 2013 Mortgage 7.85% maturing in Jan 2022	Dec. 31, 2012 Mortgage 7.85% maturing in Jan 2022	Jul. 31, 2008 Mortgage 7.85% maturing in Jan 2022 item	Dec. 31, 2013 Mortgage 6.25% maturing in February 2033 property	Dec. 31, 2012 Mortgage 6.25% maturing in February 2033	Dec. 31, 2013 Mortgage 5.95% maturing in September 2038 property	Dec. 31, 2012 Mortgage 5.95% maturing in September 2038	Dec. 31, 2013 Mortgage 4.38% maturing in September 2043 property	Dec. 31, 2012 Mortgage 4.38% maturing in September 2043	Dec. 31, 2013 Mortgage bonds property	Dec. 31, 2012 Mortgage bonds	Dec. 31, 2013 Capital leases property	Dec. 31, 2012 Capital leases
Indebtedness
Face Amount			$ 1,100,000	$ 1,100,000	$ 250,000	$ 250,000	$ 200,000	$ 200,000	$ 350,000	$ 300,000	$ 300,000	$ 350,000	$ 350,000
Unamortized Discount			6,663	7,947	1,085	1,620	1,348	1,563		4,230	4,764
Total secured	699,427	724,477													694,942	719,047		10,565		13,759	36,145	36,906	30,177	30,944	12,093	5,020	5,121	11,465	11,612	12,773	13,051	2,805	2,878	6,579	6,792	4,502	4,596	52,000	52,000	6,363	6,476	87,928	90,607	12,366	12,537	5,720	5,810	45,753	46,753	11,245	11,419	9,425	9,641	292,611	296,437	3,007	3,270		1,482	1,608		3,444	3,534	9,353	9,492	4,672	4,747	14,700	14,700	13,314	13,792
Interest rate (as a percent)					4.30%	4.30%	6.75%	6.75%		6.75%	6.75%	5.625%	5.625%	5.625%				6.11%		6.91%	5.83%	5.83%	6.02%	6.02%	6.25%	5.65%	5.65%	6.37%	6.37%	5.66%	5.66%	5.88%	5.88%	5.81%	5.81%	5.81%	5.81%	5.64%	5.64%	5.97%	5.97%	5.92%	5.92%	6.25%	6.25%	5.86%	5.86%	6.54%	6.54%	6.15%	6.15%	6.73%	6.73%	6.71%	6.71%	7.31%	7.31%		7.85%	7.85%		6.25%	6.25%	5.95%	5.95%	4.38%	4.38%	5.88%	5.88%	7.70%	7.70%
Number of properties as collateral															53						2		1		1	1		1		3		1		1		1		1		1		2		1		1		8		1		1		17		1						1		2		1		1		2
Initial Cost of Collateral	5,263,625	5,019,615													1,440,217		17,034		36,359		79,000		99,000		22,350	22,143		14,849		26,606		15,397		9,650		8,600		70,495		10,272		157,500		22,102		11,280		62,500		16,400		15,100		617,161		18,827						5,200		11,425		8,059		34,307		28,601
Net Book Value of Collateral	4,422,865	4,304,928													964,046	1,008,247		14,883		33,057	77,799	78,594	96,354	98,346	22,033	20,965	21,435	14,197	14,432	25,457	25,868	14,384	14,774	9,474	9,665	8,168	8,391	64,904	66,123	9,811	10,051	151,928	154,691	21,672	21,968	11,292	11,562	54,702	56,341	15,180	15,507	11,299	11,526	252,404	260,274	16,478	16,839					4,588	4,695	9,080	9,295	7,632	7,768	25,619	26,559	18,626	15,603
Unamortized net premiums	4,485	5,430
Number of mortgages																																																										2			2
Net book value of the assets encumbered by capital leases	18,627	15,602
Required principal payments on outstanding debt
2014	48,222
2015	94,249
2016	410,136
2017	65,382
2018	115,602
Thereafter	$ 1,161,353