v3.10.0.1

Earnings Per Share - Computation of Basic and Diluted Net Earnings (Loss) Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net income	$ 18,089	$ 10,933	$ 29,442	$ 24,565
Denominator:
Denominator for basic earnings per share – weighted average shares (in shares)	20,847	20,751	20,838	20,745
Effect of dilutive securities:
Employee stock options (in shares)	71	84	73	89
Denominator for diluted earnings per share - weighted average shares (in shares)	20,918	20,835	20,911	20,834

X

- Definition

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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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