Earnings Per Share

9 Months Ended

Sep. 30, 2013

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 September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Basic shares outstanding		99,207		97,876		99,058		97,460
Effect of potential common stock:
Common stock awards		905		1,017		894		1,077
Senior subordinated convertible notes		190		864		200		1,006
Diluted shares outstanding		100,302		99,757		100,152		99,543

For the three and nine month periods ended September 30, 2013 there were 551,850 and 601,350 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 540,266 and 589,666 outstanding stock options, respectively, that would have been antidilutive for the three and nine month periods ended September 30, 2012.