RETIREMENT PLANS (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2015 and 2014 were as follows (in thousands):

	Pension Benefits
	Pension Plan								SERP
	Three months ended June 30,								Three months ended June 30,
	2015				2014				2015			2014
Components of net periodic benefit cost:
Service cost		$	3,517			$	2,556			$	—		$	—
Interest cost			3,302				3,198				16			19
Expected return on plan assets			(4,485	)			(4,718	)			—			—
Amortization of actuarial loss			1,903				155				7			4
Net periodic benefit cost		$	4,237			$	1,191			$	23		$	23

	Pension Benefits
	Pension Plan								SERP
	Six months ended June 30,								Six months ended June 30,
	2015				2014				2015			2014
Components of net periodic benefit cost:
Service cost		$	7,347			$	5,323			$	—		$	—
Interest cost			6,656				6,421				32			37
Expected return on plan assets			(8,968	)			(9,431	)			—			—
Amortization of actuarial loss			3,867				351				14			8
Net periodic benefit cost		$	8,902			$	2,664			$	46		$	45

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 six months ended June 30, 2015 and 2014 were as follows (in thousands):

	Other Postretirement Benefits								Other Postretirement Benefits
	Postretirement Welfare Plan								Postretirement Welfare Plan
	Three months ended June 30,								Six months ended June 30,
	2015				2014				2015				2014
Components of net periodic benefit cost:
Service cost		$	—			$	—			$	—			$	—
Interest cost			5				27				18				55
Amortization of actuarial gain			(222	)			(161	)			(395	)			(324	)
Net periodic benefit cost		$	(217	)		$	(134	)		$	(377	)		$	(269	)