Employee Benefits

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Employee Benefits

EMPLOYEE BENEFITS

Net Periodic Benefit Cost

The components of the net periodic benefit cost for our pension and postretirement benefit plans are as follows:

	Pension Plan				Postretirement Benefit Plan
Three Months Ended June 30,	2020		2019		2020		2019
Net periodic benefit cost
Service cost	$	2,707	$	1,997	$	432	$	456
Interest cost	2,066		2,080		253		318
Expected return on plan assets	(3,385)		(2,696)		—		—
Amortization of prior service credit	—		—		(2,021)		(2,221)
Amortization of net loss	979		901		94		224
Net periodic benefit cost	$	2,367	$	2,282	$	(1,242)	$	(1,223)

	Pension Plan				Postretirement Benefit Plan
Six Months Ended June 30,	2020		2019		2020		2019
Net periodic benefit cost
Service cost	$	5,414	$	3,994	$	864	$	912
Interest cost	4,132		4,160		506		637
Expected return on plan assets	(6,770)		(5,392)		—		—
Amortization of prior service credit	—		—		(4,042)		(4,242)
Amortization of net loss	1,958		1,802		188		447
Net periodic benefit cost	$	4,734	$	4,564	$	(2,484)	$	(2,246)

A portion of the service cost component of net periodic pension and postretirement benefit costs is capitalized and amortized as part of deferred acquisition costs and is included in the line "Amortization of deferred policy acquisition costs" in the Consolidated Statements of Income and Comprehensive Income. The portion not related to the compensation and the other components of net periodic pension and postretirement benefit costs is included in the income statement line titled "other underwriting expenses."

Employer Contributions

We previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2019 that we expected to contribute $10,000 to the pension plan in 2020. For the six-month period ended June 30, 2020, we contributed $5,000 to the pension plan.