Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2020

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
	March 31,
	2020	2019
Common shares outstanding, end of period	36,450	36,891
Effect of using weighted average common shares outstanding	224	32
Shares used in computing earnings per share—basic	36,674	36,923
Effect of shares issuable under stock option plans based on the treasury stock method	148	230
Effect of restricted and contingently issuable shares	83	81
Shares used in computing earnings per share—diluted	36,905	37,234