Earnings per share (Tables)

9 Months Ended

Sep. 30, 2012

Reconciliation of Shares Used to Compute Basic and Diluted Earnings per Share

The following is a reconciliation of the shares used to compute basic and diluted earnings per share (in thousands):



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2012	2011	2012	2011
Weighted average number of common shares outstanding used to compute basic earnings per share	52,131	37,001	44,777	36,866
Dilutive effect of stock-based awards	1,031	768	1,030	890
Number of shares used to compute diluted earnings per share	53,162	37,769	45,807	37,756

Schedule of Weighted Average Share Equivalents Outstanding Excluded from Computation of Diluted Earnings per Share

The following table presents the weighted average share equivalents outstanding during each period that were excluded from the computation of diluted earnings per share because the exercise price for these options was greater than the average market price of the Company’s shares of common stock during the respective periods that became anti-dilutive when applying the treasury stock method (in thousands):



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2012	2011	2012	2011
Anti-dilutive common share equivalents outstanding	170	1,385	49	1,059