Earnings Per Share and Stockholders' Equity - Schedule of Pro Forma Net Loss and Weighted Average Common Shares Outstanding Used in Computation of Earnings per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net loss - numerator for earnings per common share	$ (4,826)	$ (1,908)
Denominator:
Weighted average common shares outstanding	3,530,150	3,530,150
Denominator for earnings per common share - assuming dilution	3,885,150	3,885,150
Earnings per common share	$ (1.37)	$ (0.54)
Earnings per common share - assuming dilution	$ (1.37)	$ (0.54)
Stock options
Denominator:
Effect of dilutive securities	215,000	215,000
Restricted stock awards
Denominator:
Effect of dilutive securities	140,000	140,000