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Basis of Presentation - Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share Basic And Diluted [Abstract]
Basic shares	6,280,593	6,418,242
Dilutive shares	422,000	444,101
Diluted shares	6,702,593	6,862,343
Net income	$ 847	$ 1,234
Basic net income per share	$ 0.13	$ 0.19
Diluted net income per share	$ 0.13	$ 0.18

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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