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Earnings per Share - Computation of Basic and Diluted Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net (Loss) Income, Basic	$ 3,476	$ 14,529
Net (Loss) Income, Diluted	$ 3,476	$ 14,529
Weighted Average Number of Shares Outstanding, Basic	2,019,502	2,089,055
Weighted Average Number of Shares Outstanding, Options	761,233	755,141
Weighted Average Number of Shares Outstanding, Diluted	2,780,735	2,844,196
Per Share Amount, Basic	$ 1.72	$ 6.96
Per Share Amount, Diluted	$ 1.25	$ 5.11

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