Pensions and Other Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2016

Pensions and Other Employee Benefit Plans [Abstract]

Components of Net Periodic Cost

The following tables provide the components of net periodic cost included in general and administrative expenses for our qualified retirement plan (the “Pension Benefits”) and health care and life insurance benefits for retired employees and dependents (the “Other Benefits”) for the three months ended March 31, 2016and 2015  (in thousands):

	Pension Benefits Three Months Ended March 31,				Other Benefits Three Months Ended March 31,
	2016		2015		2016		2015
Service cost	$	142	$	59	$	—	$	—
Interest cost		490		473		5		12
Expected return on plan assets		(512)		(538)		—		—
Recognition due to settlement		—		—		—		156
Amortization of net actuarial loss		196		205		1		8
Amortization of prior service credits		—		—		6		3
Net periodic cost	$	316	$	199	$	12	$	179