Equity, Fair Value Disclosure, Portion of Limited Partner

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General and Limited Partners’ Capital Account, Distribution Per Weighted Average Unit

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Partners' Capital Account, Distribution Per Unit of General Partner and Limited Partner Interest

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Partners Capital Equivalent In Common Shares

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Face amount or stated value per share of common stock.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

The current amount of expenditures for a real estate project that has not yet been completed.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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-Name Accounting Standards Codification
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Total distributions to each class of partners (i.e., general, limited and preferred partners).

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-Publisher FASB
-Name Accounting Standards Codification
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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.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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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.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Price of a single share of a number of saleable stocks of a company.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) segment $ / shares	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2014 USD ($) $ / shares
Property, Plant and Equipment [Line Items]
Real estate, net	$ 3,028,326	$ 3,397,922
Construction in progress	$ 5,119	$ 8,552
Vesting period (in years)	5 years
Expiration period of options (in years)	10 years
Number of operating segments \| segment	1
Common shares, par value (usd per share) \| $ / shares	$ 0.0001	$ 0.0001
OP unit equivalent in common shares (in unit per share)	1.13
Ground Lease [Member]
Property, Plant and Equipment [Line Items]
Future Minimum Payments Due	$ 53,863
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Maximum useful life of PPE (in years)	40 years
Variable Interest Entity, Primary Beneficiary [Member] \| Lake Jackson, Texas [Member] \| Affiliated Entity [Member] \| Office Building [Member]
Property, Plant and Equipment [Line Items]
VIE, ownership percentage	100.00%
Construction in progress	$ 55,960	$ 62,353
LCIF [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Property, Plant and Equipment [Line Items]
VIE, ownership percentage	96.00%
LCIF [Member]
Property, Plant and Equipment [Line Items]
Real estate, net	$ 639,476	1,005,505
Construction in progress	$ 825	367
Number of operating segments \| segment	1
Common shares, par value (usd per share) \| $ / shares	$ 0.0001
OP unit equivalent in common shares (in unit per share)	1.13
Distributions	$ 66,815	$ 60,846	$ 56,178
Distribution per weighted average unit (usd per share) \| $ / shares	$ 0.80	$ 0.84	$ 0.82
Distribution per unit of general partner and limited partner interest (usd per share) \| $ / shares	$ 3.25
Future Minimum Payments Due	$ 3,810
LCIF [Member] \| Ground Lease [Member]
Property, Plant and Equipment [Line Items]
Future Minimum Payments Due	$ 3,810
LCIF [Member] \| Limited Partner [Member]
Property, Plant and Equipment [Line Items]
Share price (usd per share) \| $ / shares	$ 10.8
Portion of LP, fair value	$ 40,734
LCIF [Member] \| Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Maximum useful life of PPE (in years)	40 years