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Earnings per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net income (loss)	$ 486	$ (612)
Denominator:
Weighted average shares outstanding, basic (in shares)	53,806,317	52,752,774
Effect of dilutive securities (in shares)	1,063,829	0
Weighted average shares outstanding, diluted (in shares)	54,870,146	52,752,774
Net income (loss) per share, basic and diluted:
Basic (in dollars per share)	$ 0.01	$ (0.01)
Diluted (in dollars per share)	$ 0.01	$ (0.01)
Antidilutive securities excluded from calculations of diluted net income per share (in shares)	3,095,224	3,068,806

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