Income Per Share (Tables)

9 Months Ended

Sep. 30, 2015

Schedule of Weighted Average Number of Shares Outstanding Used to Compute Income Per Share

The weighted average numbers of shares outstanding used to compute income per share were as follows (in thousands):



	Three Months Ended September 30,		Nine Months Ended September 30,
	2015	2014	2015	2014
Shares used to calculate basic income per share	31,272	31,287	31,386	31,231
Dilutive effect of outstanding stock options, performance stock units and restricted stock units	255	368	316	410
Shares used to calculate diluted income per share	31,527	31,655	31,702	31,641

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The weighted average numbers of shares outstanding listed in the table below were anti-dilutive and excluded from the computation of diluted income per share because, in the case of stock options, the average market price did not exceed the exercise price, and for the performance stock units, because these shares are subject to performance conditions that had not been met. These shares may be dilutive potential common shares in the future (in thousands):



	Three Months Ended September 30,		Nine Months Ended September 30,
	2015	2014	2015	2014
Stock options	7	212	10	247
Performance stock units	—	198	—	20