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Calculations of Basic and Diluted Income (Loss) Per Common Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Earnings Per Share Disclosure [Line Items]    
Net loss-basic and diluted $ (2,929) $ (632)
Weighted-average shares outstanding-basic and diluted 13,274 12,761
Basic and diluted loss per common share $ (0.22) $ (0.05)