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Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Income from continuing operations	$ 7,092	$ 4,780
Income from discontinued operations		1,194
Net income	$ 7,092	$ 5,974
Denominator:
Weighted-average shares outstanding	32,334	32,337
Effect of dilutive shares	23	40
Weighted-average diluted shares	32,357	32,377
Net income per share - basic:
Continuing operations	$ 0.22	$ 0.15
Discontinued operations		0.03
Net income per share - basic	0.22	0.18
Net income per share - diluted:
Continuing operations	0.22	0.15
Discontinued operations		0.03
Net income per share - diluted	$ 0.22	$ 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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