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Significant Accounting Policies - Summary of Computation of Net Income or (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Net income (loss)	$ (3,279)	$ 926
Weighted average common shares outstanding
Basic	9,714	9,684
Diluted	9,714	10,097
Net income (loss) per share:
Basic	$ (0.34)	$ 0.10
Diluted	$ (0.34)	$ 0.09

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