Employee Benefit Plans

3 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

Employee Benefit Plans

Net periodic cost (benefit) of the Defined Benefit Pension, Post-Retirement Medical and Supplemental Executive Retirement plans included in general insurance expenses in the accompanying condensed consolidated statements of income includes the following components:

	Three Months Ended March 31,
	Defined Benefit  Pension Plan						Post-Retirement  Medical Plan						Supplemental Executive Retirement Plan				Total
	2015			2014			2015			2014			2015		2014		2015			2014
Components of net periodic cost (benefit):
Service cost	$	1,509		$	1,174		$	264		$	206		$	70	$	205	$	1,843		$	1,585
Interest cost	5,997			5,738			126			130			531		697		6,654			6,565
Expected return on plan assets	(7,087		)	(7,319		)	—			—			—		—		(7,087		)	(7,319		)
Amortization of unrecognized prior service costs (benefits)	3			13			(417		)	(426		)	233		233		(181		)	(180		)
Amortization of losses (gains) from earlier periods	3,106			645			(157		)	(130		)	166		92		3,115			607
Net periodic cost (benefit)	$	3,528		$	251		$	(184	)	$	(220	)	$	1,000	$	1,227	$	4,344		$	1,258

The Company expects to make payments of approximately $533 with respect to its Post-Retirement Medical Plan and $4,825 with respect to its Supplemental Executive Retirement Plan during the year ended December 31, 2015.  The Company expects to make contributions of zero to its Defined Benefit Pension Plan during the year ended December 31, 2015.  A December 31 measurement date is used for the employee benefit plans.

The following table summarizes contributions to the Defined Benefit Pension Plan and payments made to the Post-Retirement Medical Plan and the Supplemental Executive Retirement Plan:

	Three Months Ended March 31,
	2015		2014
Contributions to the Defined Benefit Pension Plan	$	—	$	2,024
Payments to the Post-Retirement Medical Plan	133		131
Payments to the Supplemental Executive Retirement Plan	2,335		908