Subsequent Events - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended	1 Months Ended
Apr. 02, 2013	Mar. 31, 2014	Apr. 24, 2014 Subsequent Event	Apr. 24, 2014 Subsequent Event Cash Distribution
Subsequent Event [Line Items]
Declaration of cash distribution				$ 0.575
Distribution declaration date				Apr. 24, 2014
Distribution payment date				May 15, 2014
Distribution record date				May 08, 2014
Common stock, shares issued		136,400	263,719
Gross offering proceeds			$ 14.9
Capital contribution from the general partner	$ 8.4	$ 0.1	$ 0.3
General partnership interest	2.00%	2.00%	2.00%

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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

-Publisher FASB

-Name Accounting Standards Codification

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Date of record for distribution of cash or unit to limited partner of limited partnership (LP), in CCYY-MM-DD format.

+ References

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Date of declaration for distribution of cash or unit to limited partner of limited partnership (LP), in CCYY-MM-DD format.

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Date of distribution for distribution of cash or unit to limited partner of limited partnership (LP), in CCYY-MM-DD format.

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Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

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- Definition

The amount of capital contributed by the general partner.

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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The cash inflow from the additional capital contribution to the entity.

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-Glossary Financing Activities

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