Equity Incentive Program (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based incentive plans compensation expense

Stock-based compensation is reported within selling, general and administrative expenses of continuing operations in the Condensed Consolidated Statements of Earnings. The following table summarizes the Company’s compensation expense relating to all stock-based incentive plans:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Pre-tax stock-based compensation expense (continuing)	$	8,435	$	3,658	$	16,617	$	10,403
Tax benefit	(498)		(817)		(1,546)		(2,313)
Total stock-based compensation expense, net of tax	$	7,937	$	2,841	$	15,071	$	8,090

Stock-based compensation expense attributable to Apergy employees for the three and six months ended June 30, 2018 was $174 and $744, respectively. These costs are reported within earnings from discontinued operations in the Condensed Consolidated Statement of Earnings.

Stock Appreciation Rights (SARs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Valuation assumptions

The range of assumptions used in determining the fair value of the SARs awarded during the respective periods were as follows:

	SARs
	2019		2018
Risk-free interest rate	2.51	%	2.58	%	-	2.87	%
Dividend yield	2.13	%	1.99	%	-	2.43	%
Expected life (years)	5.6		5.6		-	5.7
Volatility	22.35	%	20.95	%	-	21.20	%
Grant price	$91.20		$79.75		-	$82.09
Fair value per share at date of grant	$17.55		$14.58		-	$15.41

Performance Shares [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Valuation assumptions

The fair value and average attainment used in determining stock-based compensation cost for the performance shares issued in 2019 and 2018 were as follows for the six months ended June 30, 2019:

	Performance Shares
	2019	2018
Fair value per share at date of grant	$91.20	$79.75	-	$82.09
Average attainment rate reflected in expense	240.05%	288.57%