Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

Below is the computation of basic and diluted earnings per share for the years ended December 31, 2016, 2015 and 2014 (see the discussion regarding the adoption of ASU No. 2016-9 and its effect on the calculation of 2016 diluted earnings per share in Note 1):

(In thousands, except per share amounts)	2016		2015		2014
Computation of Basic Earnings per Share
Net income attributable to Stepan Company	$	86,191	$	75,968	$	57,101
Weighted-average number of shares outstanding		22,793		22,730		22,758
Basic earnings per share	$	3.78	$	3.34	$	2.51
Computation of Diluted Earnings per Share
Net income attributable to Stepan Company	$	86,191	$	75,968	$	57,101
Weighted-average number of shares outstanding		22,793		22,730		22,758
Add weighted-average net shares from assumed    exercise of options (under treasury share method) (a)		159		118		148
Add weighted-average net shares related to unvested    stock awards (under treasury share method)		6		3		11
Add weighted-average net shares from assumed    exercise of SARs (under treasury share method)		68		1	─
Add weighted-average contingently issuable net shares    related to performance stock awards (under treasury    share method)		68		6	─
Weighted-average shares applicable to diluted    earnings		23,094		22,858		22,917
Diluted earnings per share	$	3.73	$	3.32	$	2.49

(a) Options to purchase 43,715, 124,531and 99,044 shares of common stock were not included in the computations of diluted earnings per share for the years ended December 31, 2016, 2015 and 2014, respectively. The options’ exercise prices were greater than the average market price for the common stock and the effect of the options on earnings per share would have been antidilutive.