Employee Benefits

9 Months Ended

Sep. 30, 2016

Compensation and Retirement Disclosure [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,	2016			2015			2016		2015
Net periodic benefit cost
Service cost	$	1,623		$	1,669		$	932	$	1,305
Interest cost	1,663			1,500			754		713
Expected return on plan assets	(1,988		)	(1,950		)	—		—
Amortization of net loss	992			1,136			379		731
Net periodic benefit cost	$	2,290		$	2,355		$	2,065	$	2,749

	Pension Plan						Postretirement Benefit Plan
Nine Months Ended September 30,	2016			2015			2016		2015
Net periodic benefit cost
Service cost	$	4,869		$	5,007		$	2,796	$	3,915
Interest cost	4,989			4,500			2,262		2,139
Expected return on plan assets	(5,964		)	(5,850		)	—		—
Amortization of net loss	2,976			3,408			1,137		2,193
Net periodic benefit cost	$	6,870		$	7,065		$	6,195	$	8,247

Employer Contributions

We previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2015 that we expected to contribute $6,384 to the pension plan in 2016. For the nine-month period ended September 30, 2016, we contributed $16,383 to the pension plan. In September 2016, the Company contributed an additional $10,000 to the pension plan for tax advantages and to reduce future obligations.