Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2015

Stockholders' Equity

Reconciliation of number of shares outstanding with the number of shares used in computing basic and diluted earnings per share

        The following table reconciles the number of shares outstanding with the number of shares used in computing basic and diluted earnings per share for each of the periods presented (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015			2014
Common shares outstanding, end of period		37,486		37,373		37,486			37,373
Effect of using weighted average common shares outstanding		66		264		(55	)		269
Shares used in computing earnings per share—basic		37,552		37,637		37,431			37,642
Effect of shares issuable under stock option plans based on the treasury stock method		277		129		266			153
Effect of restricted shares		178		158		147			122
Shares used in computing earnings per share—diluted		38,007		37,924		37,844			37,917