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Calculations of Basic and Diluted Loss per Common Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Earnings Per Share Disclosure [Line Items]        
Net loss - basic and diluted $ (3,202) $ (568) $ (6,131) $ (1,200)
Weighted-average shares outstanding - basic and diluted 13,483 12,808 13,379 12,784
Basic and diluted loss per common share $ (0.24) $ (0.04) $ (0.46) $ (0.09)