Earnings Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [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 shown below (in thousands):

	Three months ended March 31,
	2015		2014
Basic shares outstanding		100,377		99,557
Effect of potential common stock
Common stock awards		852		864
Senior subordinated convertible notes		132		151
Diluted shares outstanding		101,361		100,572

For the three months ended March 31, 2015 there were 697,555 outstanding stock options that were not included in the determination of diluted earnings per share because doing so would have been antidilutive, as compared to 1,093,600 outstanding stock options that would have been antidilutive for the three months ended March 31, 2014.