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Net Income (Loss) Per Common Share - Schedule of Computation of Dilutive Effect, Calculated to Indicate Impact of Net Income and Anti-Dilutive Common Stock Equivalents (Parenthetical) (Detail)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]
Dilutive effects from equity instruments	0

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- Definition

Additional shared included in the calculation of diluted EPS as a result of the potentially dilutive effect of equity forward arrangements using the reverse treasury stock method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 35

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e2366-109256

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