Annual report pursuant to Section 13 and 15(d)

Basis of Presentation (Additional Information (Detail)

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Basis of Presentation (Additional Information (Detail)
12 Months Ended
Dec. 31, 2013
Basis Of Presentation [Line Items]  
Stockholders' Equity, Reverse Stock Split All per share amounts, outstanding shares, warrants, options and shares issuable pursuant to convertible securities for all periods reflect the Company’s 1-for-75 reverse stock split, which was effective February 6, 2013.