Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The following items are included in accumulated other comprehensive income ("AOCI"):

			Pension,
			Postretirement
			and Other						Accumulated
			Post-						Other
	Derivative		Employment			Available-for-			Comprehensive
	Instruments		Benefits			Sale Securities			Income
	(In thousands)
Balance at December 31, 2016	$	—	$	24,067		$	387		$	24,454
Unrealized gains (losses)	168		(5,784		)	(55		)	(5,671		)
Amounts reclassified from AOCI	88		418			(332		)	174
Balance at September 30, 2017	$	256	$	18,701		$	—		$	18,957

Schedule of Comprehensive Income Reclassifications

The following amounts were reclassified out of AOCI:

	Successor			Predecessor			Successor			Predecessor			Line Item in the Condensed Consolidated Statement of Operations
Details About AOCI Components	Three Months Ended September 30, 2017			Three Months Ended September 30, 2016			Nine Months Ended September 30, 2017			Nine Months Ended September 30, 2016
(In thousands)
Derivative instruments	$	(88	)	$	76		$	(88	)	$	397		Revenues
	—			—			—			(81		)	Benefit from income taxes
	$	(88	)	$	76		$	(88	)	$	316		Net of tax
Pension, postretirement and other post-employment benefits
Amortization of prior service credits	$	—		$	2,510		$	—		$	7,854
Amortization of actuarial gains (losses), net	—			(4,753		)	—			(6,010		)
Pension settlement	228			—			715			—
Actuarial curtailments	(773		)	—			(773		)	—
Sale of Cumberland River pension plan	(360		)	—			(360		)	—
	(905		)	(2,243		)	(418		)	1,844
	—			—			—			(481		)	Benefit from income taxes
	$	(905	)	$	(2,243	)	$	(418	)	$	1,363		Net of tax
Available-for-sale securities	$	—		$	632		$	332		$	(2,263	)	Interest and investment income
	—			—			—			1,038			Benefit from income taxes
	$	—		$	632		$	332		$	(1,225	)	Net of tax