Income Per Share (Tables)

9 Months Ended

Sep. 30, 2013

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,
	2013	2012	2013	2012
Shares used to calculate basic income per share	31,128	30,892	31,045	30,892
Dilutive effect of outstanding options and performance stock units	360	51	374	118
Shares used to calculate diluted income per share	31,488	30,943	31,419	31,010

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, primarily because the average market price did not exceed the exercise price. These shares may be dilutive potential common shares in the future (in thousands):



	Three months ended September 30,		Nine months ended September 30,
	2013	2012	2013	2012
Stock options	298	1,115	303	1,072
Performance stock units	84	130	17	47