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Earnings (Loss) from Continuing Operations Per Common Share - Computation of Basic and Diluted Earnings (Loss) Per Common Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Earnings Per Share [Abstract]    
Net loss [1],[2] $ (7,413) $ (2,942)
Weighted average basic shares 8,305,764 8,241,585
Total weighted average diluted shares with assumed conversions 8,305,764 8,241,585
Loss from operations per common share:    
Basic $ (0.89) $ (0.36)
Dilutive $ (0.89) $ (0.36)
[1] Net income (loss) represents net income (loss) from continuing operations less the dividends on redeemable convertible preferred stock.
[2] Net of preferred dividends of $353 and $349 in 2016 and 2015, respectively.