Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2013

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,
	2013		2012
Common shares outstanding, end of period(a)		37,059		36,965
Effect of using weighted average common shares outstanding		8		91
Shares used in computing earnings per share—basic		37,067		37,056
Effect of shares issuable under stock option plans based on the treasury stock method		92		—
Effect of contingently issuable restricted shares		174		—
Shares used in computing earnings per share—diluted		37,333		37,056