Common And Common Equivalent Shares

9 Months Ended

Sep. 30, 2011

Common And Common Equivalent Shares [Abstract]

9.	Common and Common Equivalent Shares:

Basic net income per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per share is calculated by dividing net income by the weighted average number of common and potential common shares outstanding during the applicable period. Potential common shares consist of outstanding options and non-vested restricted and deferred stock calculated using the treasury stock method. Under the treasury stock method, the Company includes the assumed excess tax benefits related to the potential exercise or vesting of its stock-based awards using the difference between the average market price for the applicable period less the option price, if any, and the fair value of the stock-based award on the date of grant multiplied by the applicable tax rate.

The calculation of shares used in the basic and diluted net income per share calculation for the three and nine months ended September 30, 2011 and 2010 is as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Weighted average number of common shares outstanding		47,990		46,788		47,564		46,535
Weighted average number of dilutive common share equivalents		945		694		1,119		891

Weighted average number of common and common equivalent shares outstanding		48,935		47,482		48,683		47,426

Antidilutive securities not included in the dilutive earnings per share calculation		42		1,382		47		737