RETIREMENT PLANS (Tables)

3 Months Ended

Mar. 31, 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 ended March 31, 2015 and 2014 were as follows (in thousands):

	Pension Benefits
	Pension Plan						SERP
	Three months ended March 31,						Three months ended March 31,
	2015			2014			2015		2014
Components of net periodic benefit cost:
Service cost	$	3,830		$	2,767		$	—	$	—
Interest cost		3,354			3,223			16		18
Expected return on plan assets		(4,483	)		(4,713	)		—		—
Amortization of actuarial loss		1,964			196			7		4
Net periodic benefit cost	$	4,665		$	1,473		$	23	$	22

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 ended March 31, 2015 and 2014 were as follows (in thousands):

	Other Postretirement Benefits
	Postretirement Welfare Plan
	Three months ended March 31,
	2015			2014
Components of net periodic benefit cost:
Service cost	$	—		$	—
Interest cost		13			28
Amortization of actuarial gain		(173	)		(163	)
Net periodic benefit cost	$	(160	)	$	(135	)