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Loss Per Common Share - Additional Information (Detail) (Stock Option)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Stock Option
   
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]    
Antidilutive Securities Excluded from Computation of Diluted Income Per Common Share 2,361,437 2,518,780