Earnings Per Share

6 Months Ended

Jun. 30, 2011

Notes to Financial Statements [Abstract]

3.	Earnings Per Share

Basic earnings per share were calculated using net earnings and the weighted average number of shares of common stock outstanding during the respective period. Diluted earnings per share were calculated using net earnings and the weighted average number of shares of common stock and potential common stock outstanding during the respective period. Potentially dilutive common stock consisted of stock options and the premium over the conversion price on Roper's senior subordinated convertible notes based upon the trading price of Roper's common stock. The effects of potential common stock were determined using the treasury stock method. Weighted average shares outstanding are as shown below (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2011		2010		2011		2010
Basic shares outstanding		95,911		94,011		95,644		93,911
Effect of potential common stock:
Common stock awards		1,282		983		1,293		940
Senior subordinated convertible notes		1,219		1,455		1,345		1,384
Diluted shares outstanding		98,412		96,449		98,282		96,235

For the three and six month periods ended June 30, 2011 there were 662,000 outstanding stock options that were not included in the determination of diluted earnings per share because doing so would have been antidilutive; this compares to 1,141,350 and 1,574,100 outstanding stock options, respectively, that would have been antidilutive for the three and six month periods ended June 30, 2010.