RETIREMENT PLANS (Tables)

9 Months Ended

Sep. 30, 2015

Pension Benefits [Member]

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost for the Company’s defined benefit plans for the three months and nine months ended September 30, 2015 and 2014 were as follows (in thousands):

		Pension Benefits
		Pension Plan						SERP
		Three months ended September 30,						Three months ended September 30,
		2015			2014			2015		2014
Components of net periodic benefit cost:
Service cost	$	3,673		$	2,660		$	—	$	—
Interest cost		3,327			3,208			16		18
Expected return on plan assets		(4,481	)		(4,712	)		—		—
Amortization of actuarial loss		1,932			175			7		4
Net periodic benefit cost	$	4,451		$	1,331		$	23	$	22

		Pension Benefits
		Pension Plan						SERP
		Nine months ended September 30,						Nine months ended September 30,
		2015			2014			2015		2014
Components of net periodic benefit cost:
Service cost	$	11,020		$	7,983		$	—	$	—
Interest cost		9,983			9,629			48		55
Expected return on plan assets		(13,449	)		(14,143	)		—		—
Amortization of actuarial loss		5,799			526			21		12
Net periodic benefit cost	$	13,353		$	3,995		$	69	$	67

Other Postretirement Benefits [Member]

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost for the Company’s postretirement benefit plan for the three months and nine months ended September 30, 2015 and 2014 were as follows (in thousands):

		Other Postretirement Benefits						Other Postretirement Benefits
		Postretirement Welfare Plan						Postretirement Welfare Plan
		Three months ended September 30,						Nine months ended September 30,
		2015			2014			2015			2014
Components of net periodic benefit cost:
Service cost	$	—		$	—		$	—		$	—
Interest cost		9			27			27			82
Amortization of actuarial gain		(199	)		(162	)		(594	)		(486	)
Net periodic benefit cost	$	(190	)	$	(135	)	$	(567	)	$	(404	)