Quarterly report pursuant to Section 13 or 15(d)

Loss per Share of Common Stock - Basic and Diluted Loss Per Share of Common Stock (Detail)

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Loss per Share of Common Stock - Basic and Diluted Loss Per Share of Common Stock (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Calculation of basic loss per share of common stock:        
Net loss attributable to common stockholders $ (631) $ (853) $ (1,056) $ (1,407)
Denominator for basic weighted average shares of common stock (in shares) 22,684,391 20,833,787 22,614,838 20,524,101
Basic loss per share of common stock (in dollars per share) $ (0.0278) $ (0.0409) $ (0.0467) $ (0.0686)
Calculation of diluted loss per share of common stock:        
Net loss attributable to common stockholders $ (631) $ (853) $ (1,056) $ (1,407)
Net loss attributable to common stockholders plus assumed conversions $ (631) $ (853) $ (1,056) $ (1,407)
Denominator for basic weighted average shares of common stock (in shares) 22,684,391 20,833,787 22,614,838 20,524,101
Effect of convertible Senior Common Stock (in shares) 0 0 0 0
Denominator for diluted weighted average shares of common stock (in shares) 22,684,391 20,833,787 22,614,838 20,524,101
Diluted loss per share of common stock (in dollars per share) $ (0.0278) $ (0.0409) $ (0.0467) $ (0.0686)