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Net Income (Loss) Per Share - Components of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net income (loss)	$ (325)	$ 6,741	$ 540	$ 23,506
Denominator: (in thousands)
Weighted average shares outstanding-basic	27,919,000	29,214,000	28,236,000	29,496,000
Dilutive effect of stock options and grants	0	591,000	420,000	632,000
Weighted average shares outstanding-diluted	27,919,000	29,805,000	28,656,000	30,128,000

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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