Income Per Share (Tables)

3 Months Ended

Mar. 31, 2014

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 March 31,
	2014	2013
Shares used to calculate basic income per share	31,172	30,947
Dilutive effect of outstanding options, performance stock units and restricted stock units	378	317
Shares used to calculate diluted income per share	31,550	31,264

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 March 31,
	2014	2013
Stock options	320	340
Performance stock units	84	125