Number of Outstanding Mortgage Notes to be Repaid

No definition available.

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- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: 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

Reference 2: 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

+ Details

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- Definition

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

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
-Article 5

+ Details

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Balance Type:	credit
Period Type:	instant

Notes and Bonds Payable (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
Notes and Bonds Payable (Details) $ in Thousands	Apr. 30, 2016 USD ($)	Mar. 31, 2016 USD ($) ft²	Dec. 31, 2016 USD ($) mortgage_note_payable	Dec. 31, 2015 USD ($)	Apr. 29, 2016 ft²	Feb. 11, 2016 ft²
Debt Instrument [Line Items]
Long-term Debt		$ 1,418,347		$ 1,424,992
Square footage of owned real estate properties \| ft²		14,300,000
CALIFORNIA \| Mortgage Note Financing [Member]
Debt Instrument [Line Items]
Secured Debt		$ 11,500
Stated interest rate (percent)		3.60%
Line of Credit [Member] \| Unsecured Credit Facility Due 2017 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 199,000		206,000
Effective interest rate (percent)		1.58%
Medium-term Notes [Member] \| Term Loan Due 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 199,315		199,257
Effective interest rate (percent)		1.64%
Senior Notes [Member] \| Senior Notes due 2021, net of discount and issuance costs [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 396,652		396,489
Effective interest rate (percent)		5.97%
Senior Notes [Member] \| Senior Notes due 2023, net of discount and issuance costs [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 246,996		246,897
Effective interest rate (percent)		3.95%
Senior Notes [Member] \| Senior Notes due 2025, net of discount and issuance costs [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 247,655		247,602
Effective interest rate (percent)		4.08%
Senior Notes [Member] \| Medical Office Building [Member] \| 3.60% Secured Note [Member] [Member]
Debt Instrument [Line Items]
Square footage of owned real estate properties \| ft²		90,607
Mortgages [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 128,729		$ 128,747
Effective interest rate (percent)		5.25%
Mortgages [Member] \| 5.49% Secured Note [Member]
Debt Instrument [Line Items]
Stated interest rate (percent)				5.49%
Amount of debt repaid				$ 11,400
Mortgages [Member] \| 5.86% Secured Note [Member]
Debt Instrument [Line Items]
Stated interest rate (percent)						5.86%
Amount of debt repaid		$ 10,200
Mortgages [Member] \| Medical Office Building [Member] \| 5.86% Secured Note [Member]
Debt Instrument [Line Items]
Square footage of owned real estate properties \| ft²						90,633
Subsequent Event [Member] \| Mortgages [Member] \| 5.99% Secured Note [Member]
Debt Instrument [Line Items]
Stated interest rate (percent)					5.99%
Amount of debt repaid	$ 7,300
Subsequent Event [Member] \| Mortgages [Member] \| Medical Office Building [Member] \| 5.99% Secured Note [Member]
Debt Instrument [Line Items]
Square footage of owned real estate properties \| ft²					42,957
Scenario, Forecast [Member]
Debt Instrument [Line Items]
Number of outstanding mortgage notes to be repaid \| mortgage_note_payable			2
Scenario, Forecast [Member] \| Mortgages [Member] \| Mortgage Notes 6.04% [Member]
Debt Instrument [Line Items]
Stated interest rate (percent)			6.04%
Amount of debt repaid			$ 16,100