Pensions and Other Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 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 and six months ended June 30, 2016 and 2015 (in thousands):

	Pension Benefits				Other Benefits
	Three Months				Three Months
	Ended June 30,				Ended June 30,
	2016		2015		2016		2015
Service cost	$	192	$	197	$	1	$	1
Interest cost		501		475		5		15
Expected return on plan assets		(511)		(516)		—		—
Recognition due to settlement		—		—		—		272
Amortization of net actuarial loss		248		193		2		14
Amortization of prior service credits		—		—		5		2
Net periodic cost	$	430	$	349	$	13	$	304

	Pension Benefits				Other Benefits
	Six Months				Six Months
	Ended June 30,				Ended June 30,
	2016		2015		2016		2015
Service cost	$	334	$	256	$	1	$	1
Interest cost		991		948		10		27
Expected return on plan assets		(1,023)		(1,054)		—		—
Recognition due to settlement		—		—		—		428
Amortization of net actuarial loss		444		398		3		22
Amortization of prior service credits		—		—		11		5
Net periodic cost	$	746	$	548	$	25	$	483