Income per Share - Computation of Basic and Diluted Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Net income	$ 1,042	$ 1,328	$ 1,546	$ 1,952
Denominator:
Weighted shares outstanding - basic	18,198,567	17,921,552	18,184,441	17,791,764
Net income per common share - basic
Net income	$ 0.06	$ 0.07	$ 0.09	$ 0.11
Weighted Average Shares:
Weighted shares outstanding - basic	18,198,567	17,921,552	18,184,441	17,791,764
Common stock option grants	1,256,000	1,195,000	5,976,000	666,000
Weighted shares outstanding - diluted	18,310,772	18,181,157	18,381,656	18,104,928
Net income per common share - diluted
Net income	$ 0.06	$ 0.07	$ 0.08	$ 0.11
Restricted Stock [Member]
Weighted Average Shares:
Restricted related awards shares subject to vesting	87,006,000	206,078,000	167,296,000	150,287,000
Performance Related Awards [Member]
Weighted Average Shares:
Restricted related awards shares subject to vesting	23,943,000	52,332,000	23,943,000	162,211,000