Amortization table period.

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- Definition

Debt instrument term extension period.

+ References

No definition available.

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- Definition

Number of additional extension periods.

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No definition available.

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- Definition

Number of properties securing loan.

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No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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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

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- Definition

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

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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.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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- Definition

The number of derivative instruments of a particular group held by the entity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959

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Notes Payable - Summary of Components and Significant Terms of Our Indebtedness (Detail) $ in Thousands		3 Months Ended	9 Months Ended
	Feb. 14, 2017	Sep. 30, 2017 USD ($) swap extension	Sep. 30, 2017 USD ($) property swap extension	Jul. 13, 2017	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Principal amount		$ 666,979	$ 666,979		$ 502,476
Less: unamortized discount and deferred loan costs		$ (2,770)	(2,770)		(2,292)
Number of extensions \| extension		2
Extension period		6 years
$100M Notes
Debt Instrument [Line Items]
Principal amount		$ 100,000	100,000		100,000
Less: unamortized discount and deferred loan costs		$ (595)	$ (595)		(635)
Contractual Maturity Date			Aug. 06, 2025
Stated Interest Rate		4.29%	4.29%
Effective Interest Rate		4.37%	4.37%
$125M senior notes
Debt Instrument [Line Items]
Principal amount		$ 125,000	$ 125,000		0
Less: unamortized discount and deferred loan costs		$ (140)	$ (140)		0
Contractual Maturity Date			Jul. 13, 2027
Stated Interest Rate		3.93%	3.93%	3.93%
Effective Interest Rate		3.94%	3.94%
Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Principal amount		$ 50,000	$ 50,000		0
Less: unamortized discount and deferred loan costs		$ 0	$ 0		0
Contractual Maturity Date			Feb. 12, 2021
Description of variable rate basis		LIBOR
Basis spread on variable rate		1.10%
Effective Interest Rate		2.33%	2.33%
Number of extensions \| extension			2
Extension period			6 months
Revolving Credit Facility \| Minimum \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate			1.10%
Revolving Credit Facility \| Maximum \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate			1.50%
Gilbert/La Palma \| Fixed Rate Debt
Debt Instrument [Line Items]
Principal amount		$ 2,803	$ 2,803		2,909
Less: unamortized discount and deferred loan costs		$ (139)	$ (139)		(145)
Contractual Maturity Date			Mar. 01, 2031
Stated Interest Rate		5.125%	5.125%
Effective Interest Rate		5.41%	5.41%
Amortization period			20 years
12907 Imperial Highway \| Fixed Rate Debt
Debt Instrument [Line Items]
Principal amount		$ 5,089	$ 5,089		5,182
Less: unamortized discount and deferred loan costs		$ 82	$ 82		180
Contractual Maturity Date			Apr. 01, 2018
Stated Interest Rate		5.95%	5.95%
Effective Interest Rate		3.32%	3.32%
Amortization period			30 years
1065 Walnut Street \| Fixed Rate Debt
Debt Instrument [Line Items]
Principal amount		$ 0	$ 0		9,711
Less: unamortized discount and deferred loan costs		$ 0	$ 0		(192)
Contractual Maturity Date			Feb. 01, 2019
$60M Term Loan \| LIBOR
Debt Instrument [Line Items]
Description of variable rate basis		LIBOR
Basis spread on variable rate		1.90%
Number of extensions \| extension			1
Extension period			1 year
$60M Term Loan \| Fixed Rate Debt
Debt Instrument [Line Items]
Principal amount		$ 60,000	$ 60,000
Amortization period			30 years
$60M Term Loan \| Fixed Rate Debt \| LIBOR
Debt Instrument [Line Items]
Principal amount		59,087	$ 59,087		59,674
Less: unamortized discount and deferred loan costs		$ (145)	$ (145)		(204)
Contractual Maturity Date			Aug. 01, 2019
Effective Interest Rate		3.95%	3.95%
Number of properties securing loan \| property			6
Number of derivative instruments \| swap		2	2
$100M Term Loan Facility \| LIBOR
Debt Instrument [Line Items]
Principal amount		$ 100,000	$ 100,000		100,000
Less: unamortized discount and deferred loan costs		$ (364)	$ (364)		0
Contractual Maturity Date			Feb. 14, 2022
Description of variable rate basis		LIBOR
Basis spread on variable rate		1.20%
Effective Interest Rate		3.18%	3.18%
$100M Term Loan Facility \| Minimum \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.20%		1.20%
Number of derivative instruments \| swap		2	2
$100M Term Loan Facility \| Maximum \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.70%		1.70%
$225M Term Loan Facility \| Minimum \| LIBOR
Debt Instrument [Line Items]
Number of derivative instruments \| swap		2	2
$225M Term Loan Facility \| Term Loan \| Line of Credit \| LIBOR
Debt Instrument [Line Items]
Principal amount		$ 225,000	$ 225,000		225,000
Less: unamortized discount and deferred loan costs		$ (1,469)	$ (1,469)		$ (1,680)
Contractual Maturity Date			Jan. 14, 2023
Description of variable rate basis		LIBOR
Basis spread on variable rate		1.50%
Effective Interest Rate		2.86%	2.86%
$225M Term Loan Facility \| Term Loan \| Line of Credit \| Minimum \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate			1.50%
$225M Term Loan Facility \| Term Loan \| Line of Credit \| Maximum \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate			2.25%