Employee Benefits

9 Months Ended

Sep. 30, 2019

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 September 30,	2019			2018			2019			2018
Net periodic benefit cost
Service cost	$	1,997		$	2,175		$	456		$	750
Interest cost	2,080			1,875			319			502
Expected return on plan assets	(2,696		)	(2,626		)	—			—
Amortization of prior service credit	—			—			(2,221		)	(1,352		)
Amortization of net loss	901			1,072			224			589
Net periodic benefit cost	$	2,282		$	2,496		$	(1,222	)	$	489

	Pension Plan						Postretirement Benefit Plan
Nine Months Ended September 30,	2019			2018			2019			2018
Net periodic benefit cost
Service cost	$	5,991		$	6,525		$	1,368		$	2,249
Interest cost	6,240			5,625			956			1,506
Expected return on plan assets	(8,088		)	(7,877		)	—			—
Amortization of prior service credit	—			—			(6,463		)	(4,056		)
Amortization of net loss	2,703			3,215			671			1,767
Net periodic benefit cost	$	6,846		$	7,488		$	(3,468	)	$	1,466

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 income statement line titled "amortization of deferred policy acquisition costs." 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, 2018 that we expected to contribute $4,000 to the pension plan in 2019. For the nine-month period ended September 30, 2019, we contributed $4,000 to the pension plan.