Subsequent Event and Dividends - Additional Information (Detail) (USD $)	6 Months Ended
Jun. 30, 2014	Jul. 30, 2014 Subsequent Events [Member]
Subsequent Event [Line Items]
Dividend declared		$ 0.04
Dividend payable declared	Jul. 30, 2014
Outstanding common stock payable date	Aug. 27, 2014
Dividend payable date on record	Aug. 13, 2014

Date the declared dividend will be paid, in CCYY-MM-DD format.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

+ Details

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Period Type:	instant

- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

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