Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The following table summarizes key information related to the Company's pension plans and other postretirement benefits:

	Pension Benefits						Other Postretirement Benefits
	Three Months Ended						Three Months Ended
	March 31,						March 31,
	2016			2015			2016			2015
Service cost — benefits earned during the period	$	137		$	44		$	1		$	2
Interest cost on projected benefit obligation	1,355			596			97			93
Expected return on assets	(1,519		)	(955		)	—			—
Amortization of net loss (gain)	464			139			(19		)	(24		)
Net (income) expense	$	437		$	(176	)	$	79		$	71