Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

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):

	Year Ended December 31,
	2019	2018	2017
Common shares outstanding, end of period	36,658	36,894	37,187
Effect of using weighted average common shares outstanding	196	308	52
Shares used in computing earnings per share—basic	36,854	37,202	37,239
Effect of shares issuable under stock option plans based on the treasury stock method	204	283	316
Effect of restricted and contingently issuable shares	73	107	117
Shares used in computing earnings per share—diluted	37,131	37,592	37,672