Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2019

Defined benefit pension plans

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

The tables below set forth the components of the Company’s net periodic (income) expense relating to retirement benefit plans. The service cost component is recognized within selling, general and administrative expenses and cost of goods and services, depending on the functional area of the underlying employees included in the plans, and the non-operating components of pension costs are included within other income, net in the Condensed Consolidated Statements of Earnings. The amounts recorded to discontinued operations represent the net periodic benefit expense for several non-U.S. qualified and U.S. non-qualified plans that were transferred to Apergy at the spin-off date of May 9, 2018.

Qualified Defined Benefits

	Three Months Ended June 30,								Six Months Ended June 30,
	U.S. Plan				Non-U.S. Plans				U.S. Plan				Non-U.S. Plans
	2019		2018		2019		2018		2019		2018		2019		2018
Service cost	$	1,754	$	2,303	$	1,291	$	1,534	$	3,508	$	5,287	$	2,836	$	3,111
Interest cost	4,756		5,153		1,207		1,343		9,513		10,255		2,448		2,721
Expected return on plan assets	(8,534)		(9,745)		(1,608)		(2,037)		(17,068)		(19,956)		(3,126)		(4,128)
Amortization:
Prior service cost (credit)	76		339		(138)		(111)		151		426		(196)		(226)
Recognized actuarial loss	—		870		708		782		—		2,801		1,525		1,585
Transition obligation	—		—		—		1		—		—		—		2
Net periodic (income) expense	$	(1,948)	$	(1,080)	$	1,460	$	1,512	$	(3,896)	$	(1,187)	$	3,487	$	3,065
Less: Discontinued operations	—		273		—		73		—		950		—		247
Net periodic (income) expense - Continuing operations	$	(1,948)	$	(1,353)	$	1,460	$	1,439	$	(3,896)	$	(2,137)	$	3,487	$	2,818

Supplemental Employee Retirement Plans, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

Non-Qualified Supplemental Benefits

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Service cost	$	486	$	660	$	971	$	1,355
Interest cost	668		808		1,335		1,701
Amortization:
Prior service cost	703		1,351		1,406		2,314
Recognized actuarial gain	(570)		(281)		(1,140)		(536)
Net periodic expense	$	1,287	$	2,538	$	2,572	$	4,834
Less: Discontinued operations	—		97		—		351
Net periodic expense - Continuing operations	$	1,287	$	2,441	$	2,572	$	4,483

Post-Retirement Benefits [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

Post-Retirement Benefit Plans

The Company also maintains post-retirement benefit plans, although these plans are closed to new entrants. The supplemental and post-retirement benefit plans are supported by the general assets of the Company. The following table sets forth the components of the Company’s net periodic expense relating to its post-retirement benefit plans:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Service cost	$	5	$	7	$	10	$	15
Interest cost	78		72		156		145
Amortization:
Prior service cost	3		4		7		7
Recognized actuarial gain	(16)		(7)		(35)		(15)
Net periodic expense	$	70	$	76	$	138	$	152