EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2015

Dec. 31, 2014

Net periodic benefit cost recognized for the plans

	Pension Benefits						Other Benefits
(In thousands)	March 31, 2015			March 31, 2014			March 31, 2015			March 31, 2014
Components of net periodic benefit cost:
Service cost	$	—		$	—		$	2		$	9
Interest cost		1,069			1,152			7			53
Expected return on plan assets		(1,166	)		(1,307	)		—			—
Amortization of net (gain) loss		11			(259	)		(2,797	)		(87	)
Amortization of prior service credit		—			—			(2,888	)		(416	)
Curtailment gain		—			—			(11,867	)		—
Settlement (gain) loss		287			—			(575	)		—

Net periodic benefit cost (credit)	$	201		$	(414	)	$	(18,118	)	$	(441	)

	Pension Benefits												Other Benefits
(In thousands)	12 Months Ended December 31, 2014			12 Months Ended December 31, 2013			From Inception August 31, 2012 through December 31, 2012			March 30, 2012 through August 30, 2012			12 Months Ended December 31, 2014			12 Months Ended December 31, 2013			From Inception August 31, 2012 through December 31, 2012		March 30, 2012 through August 30, 2012
	(Successor)			(Successor)			(Successor)			(Predecessor)			(Successor)			(Successor)			(Successor)		(Predecessor)
Components of net periodic benefit cost:
Service cost	$	—		$	180		$	59		$	76		$	36		$	195		$	61	$	74
Interest cost		4,609			4,513			1,484			1,962			214			870			306		435
Expected return on plan assets		(5,230	)		(4,707	)		(1,442	)		(1,811	)		—			—			—		—
Amortization of net (gain) loss		(1,034	)		—			—			899			(348	)		(78	)		—		88
Amortization of prior service credit		—			—			—			—			(1,665	)		—			—		(448	)
Settlement		—			—			(15	)		—			—			—			—		—

Net periodic benefit cost (credit)	$	(1,655	)	$	(14	)	$	86		$	1,126		$	(1,763	)	$	987		$	367	$	149

Summary of changes in other comprehensive income:

	Pension Benefits						Other Benefits
(In thousands)	12 Months Ended December 31, 2014			12 Months Ended December 31, 2013			12 Months Ended December 31, 2014			12 Months Ended December 31, 2013
	(Successor)			(Successor)			(Successor)			(Successor)
Net (gain) loss	$	21,641		$	(12,537	)	$	561		$	(1,271	)
Net prior service credit		—			—			—			(15,197	)
Amortization of net gain		1,034			—			348			78
Amortization of prior service credit		—			—			1,665			—
Allocated tax expense (benefit)		(8,843	)		8,442			(1,003	)		6,782

Total recognized in other comprehensive (income) loss	$	13,832		$	(4,095	)	$	1,571		$	(9,608	)
Net periodic benefit cost (credit)		(1,655	)		(14	)		(1,763	)		987

Total recognized in net periodic benefit cost (credit) and other comprehensive (income) loss	$	12,177		$	(4,109	)	$	(192	)	$	(8,621	)

Schedule of plan's change in benefit obligations and plan assets and the accrued liability for benefit costs included in the Consolidated Balance Sheets

	Pension Benefits						Other Benefits
(In thousands)	12 Months Ended December 31, 2014			12 Months Ended December 31, 2013			12 Months Ended December 31, 2014			12 Months Ended December 31, 2013
	(Successor)			(Successor)			(Successor)			(Successor)
Change in benefit obligation:
Benefit obligation at beginning of period	$	98,883		$	109,718		$	5,718		$	22,765
Service cost		—			180			36			195
Interest cost		4,609			4,513			214			870
Plan participants' contributions		—			—			419			562
Actuarial (gain) loss		23,532			(10,022	)		561			(1,271	)
Plan amendment		—			—			—			(15,197	)
Benefits paid		(2,247	)		(5,408	)		(1,262	)		(2,206	)
Administrative expenses		(81	)		(98	)		—			—
Settlement paid		(7,166	)		—			—			—
Settlement gain		(3,575	)		—			—			—

Benefit obligation at end of period	$	113,955		$	98,883		$	5,686		$	5,718

	Pension Benefits						Other Benefits
(In thousands)	12 Months Ended December 31, 2014			12 Months Ended December 31, 2013			12 Months Ended December 31, 2014			12 Months Ended December 31, 2013
	(Successor)			(Successor)			(Successor)			(Successor)
Change in plan assets:
Fair value of plan assets at beginning of period	$	73,658		$	68,219		$	—		$	—
Actual return on plan assets gain		3,546			7,223			—			—
Employer contribution		2,714			3,722			843			1,644
Plan participants' contributions		—			—			419			562
Benefits paid		(2,247	)		(5,408	)		(1,262	)		(2,206	)
Administrative expense		(81	)		(98	)		—			—
Settlement paid		(7,166	)		—			—			—

Fair value of plan assets at end of period	$	70,424		$	73,658		$	—		$	—


Net liability for benefit cost:
Funded status	$	(43,531	)	$	(25,225	)	$	(5,686	)	$	(5,718	)

	Pension Benefits						Other Benefits
(In thousands)	December 31, 2014			December 31, 2013			December 31, 2014			December 31, 2013
	(Successor)			(Successor)			(Successor)			(Successor)
Amounts recognized in the Balance Sheet:
Accrued expenses and other liabilities	$	(152	)	$	(154	)	$	(629	)	$	(612	)
Other long-term liabilities		(43,379	)		(25,071	)		(5,057	)		(5,106	)

Net liability recognized	$	(43,531	)	$	(25,225	)	$	(5,686	)	$	(5,718	)


Aggregate accumulated benefit obligation	$	(113,955	)	$	(98,883	)	$	(5,686	)	$	(5,718	)

Summary of pension plans with accumulated benefit obligations and projected benefit obligations in excess of plan assets

	Pension Benefits
(In thousands)	December 31, 2014			December 31, 2013
	(Successor)			(Successor)
Aggregated accumulated benefit obligation	$	(113,955	)	$	(98,883	)
Aggregated projected benefit obligation		(113,955	)		(98,883	)
Aggregated fair value of plan assets		70,424			73,658

Schedule of components of amounts recognized in accumulated other comprehensive income

	Pension Benefits					Other Benefits
(In thousands)	December 31, 2014		December 31, 2013			December 31, 2014		December 31, 2013
	(Successor)		(Successor)			(Successor)		(Successor)
Net actuarial (gain) loss	$	21,641	$	(12,537	)	$	561	$	(1,271	)
Prior service credit		—		—			—		(15,197	)

Schedule of amounts in accumulated other comprehensive income expected to be recognized in components of net periodic pension cost

(In thousands)	Pension Benefits		Other Benefits
Net actuarial (gain) loss	$	45	$	(284	)
Net prior service credit		—		(1,665	)

Schedule of weighted-average assumptions used to determine benefit obligations

Pension Benefits

Other Benefits

December 31,
2014

December 31,
2013

December 31,
2014

December 31,
2013

(Successor)

Discount rate

3.80

4.73

3.37

4.00

Rate of compensation increase

N/A

Schedule of weighted-average assumptions used to determine net periodic benefit cost

	Pension Benefits												Other Benefits
	12 Months Ended December 31, 2014			12 Months Ended December 31, 2013			From Inception August 31, 2012 through December 31, 2012			March 30, 2012 through August 30, 2012			12 Months Ended December 31, 2014			12 Months Ended December 31, 2013			From Inception August 31, 2012 through December 31, 2012			March 30, 2012 through August 30, 2012
	(Successor)			(Successor)			(Successor)			(Predecessor)			(Successor)			(Successor)			(Successor)			(Predecessor)
Discount rate		4.73	%		4.17	%		3.99	%		4.86	%		4.00	%		3.90	%		3.65	%		4.42	%
Weighted average expected long-term return on plan assets		7.81	%		7.27	%		7.27	%		7.27	%		N/A			N/A			N/A			N/A
Rate of compensation increase		N/A			N/A			N/A			N/A			N/A			N/A			N/A			N/A

Schedule of benefits expected to be paid

(In thousands)	Pension Benefits		Other Benefits
2015	$	2,583	$	639
2016		2,720		633
2017		3,973		614
2018		3,664		545
2019		4,493		490
Years 2020-2024		29,648		1,745

Schedule of target allocations for plan assets

Asset Category	Target Allocation
Fixed(1)		15	%
Equity Securities—U.S.		26	%
Equity Securities—International		14	%
Collective trust fund		25	%
Private Real Estate		15	%
Commodities broad basket		5	%

		100	%

(1)	Includes U.S. Treasury Securities and Bond market fund.

Schedule of fair value of the pension plan assets

			Fair Value Measurements at December 31, 2014 Using
	Total Carrying Value at December 31, 2014		Fair Value Measurements at December 31, 2014 Using
(In thousands)	Total Carrying Value at December 31, 2014		Quoted prices in active market (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Cash and cash equivalents	$	300	$	300	$	—	$	—
U.S. treasury securities		1,615		1,615		—		—
Equity securities:
U.S. companies		18,513		18,513		—		—
International companies		10,109		10,109		—		—
Bond market fund		9,173		9,173		—		—
Collective trust fund		17,485		—		17,485		—
Commodities broad basket fund		2,918		2,918		—		—
Private real estate		10,311		—		10,311		—

Total assets at fair value	$	70,424	$	42,628	$	27,796	$	—

The fair value of the pension plan assets at December 31, 2013, by asset class is as follows:

			Fair Value Measurements at December 31, 2013 Using
	Total Carrying Value at December 31, 2013		Fair Value Measurements at December 31, 2013 Using
(In thousands)	Total Carrying Value at December 31, 2013		Quoted prices in active market (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Cash and cash equivalents	$	265	$	265	$	—	$	—
U.S. treasury securities		1,557		1,557		—		—
Equity securities:
U.S. companies		19,654		19,654		—		—
International companies		11,281		11,281		—		—
Bond market fund		9,655		9,655		—		—
Collective trust fund		17,958		—		17,958		—
Commodities broad basket fund		3,459		3,459		—		—
Private real estate		9,829		—		9,829		—

Total assets at fair value	$	73,658	$	45,871	$	27,787	$	—