Net Income Per Share:

Net income per share is based on the weighted average number of shares outstanding. A reconciliation of the shares used in the computation of basic and diluted net income per share is as follows:



	Three Months Ended September 30,		Nine Months Ended September 30,
(SHARES IN THOUSANDS)	2017	2016	2017	2016
Basic	79,063	79,580	79,072	79,727
Assumed dilution under stock plans	299	355	281	340
Diluted	79,362	79,935	79,353	80,067

There were no stock options or stock-settled appreciation rights (“SSARs”) excluded from the computation of diluted net income per share for the three and nine months ended September 30, 2017. An immaterial amount of SSARs were excluded from the 2016 period.

The Company has issued shares of purchased restricted common stock and purchased restricted common stock units (collectively “PRSUs”) which contain rights to nonforfeitable dividends while these shares are outstanding and thus are considered participating securities. Such securities are required to be included in the computation of basic and diluted earnings per share pursuant to the two-class method. The Company did not present the two-class method since the difference between basic and diluted net income per share for both unrestricted common shareholders and PRSU shareholders was less than $0.01 per share for each period presented, and the number of PRSUs outstanding as of September 30, 2017 and 2016 was immaterial. Net income allocated to such PRSUs was $0.2 million for both the three months ended September 30, 2017 and 2016 and was $0.7 million and $0.8 million for the nine months ended September 30, 2017 and 2016, respectively.