Earnings Per Share

6 Months Ended

Jun. 30, 2012

Notes to Financial Statements [Abstract]

Earnings Per Share

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,
	2012	2011	2012	2011
Basic shares outstanding	97,460	95,911	97,249	95,644
Effect of potential common stock:
Common stock awards	1,129	1,282	1,172	1,293
Senior subordinated convertible notes	1,030	1,219	1,079	1,345
Diluted shares outstanding	99,619	98,412	99,500	98,282

For the three and six month periods ended June 30, 2012 there were 401,600 and 408,100 outstanding stock options, respectively, that were not included in the determination of diluted earnings per share because doing so would have been antidilutive; this compares to 662,000 outstanding stock options that would have been antidilutive for the three and six month periods ended June 30, 2011.