Pensions and Other Employee Benefit Plans (Tables)

9 Months Ended

Sep. 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 nine months ended September 30, 2016and 2015 (in thousands):

	Pension Benefits				Other Benefits
	Three Months				Three Months
	Ended September 30,				Ended September 30,
	2016		2015		2016		2015
Service cost	$	167	$	128	$	—	$	—
Interest cost		495		474		6		6
Expected return on plan assets		(512)		(526)		—		—
Amortization of net actuarial loss		223		199		1		3
Amortization of prior service credits		—		—		5		3
Net periodic cost	$	373	$	275	$	12	$	12

	Pension Benefits				Other Benefits
	Nine Months				Nine Months
	Ended September 30,				Ended September 30,
	2016		2015		2016		2015
Service cost	$	501	$	384	$	1	$	1
Interest cost		1,486		1,422		16		33
Expected return on plan assets		(1,535)		(1,580)		—		—
Recognition due to settlement		—		—		—		428
Amortization of net actuarial loss		667		597		4		25
Amortization of prior service credits		—		—		16		8
Net periodic cost	$	1,119	$	823	$	37	$	495