Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2019

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, 2018	$	3,328		$	40,311		$	(343	)	$	43,296
Unrealized gains	3,836			1,745			603			6,184
Amounts reclassified from AOCI	(6,257		)	(2,862		)	(50		)	(9,169		)
Balance at September 30, 2019	$	907		$	39,194		$	210		$	40,311

Schedule of Comprehensive Income Reclassifications

The following amounts were reclassified out of AOCI:

	Three Months Ended September 30,					Nine Months Ended September 30,
Details About AOCI Components	2019		2018			2019		2018			Line Item in the Condensed Consolidated Statement of Operations
(In thousands)
Coal hedges	$	2,963	$	(4,824	)	$	5,067	$	(4,824	)	Revenues
Interest rate hedges	161		265			1,190		753			Interest expense
	—		—			—		—			Provision for (benefit from) income taxes
	$	3,124	$	(4,559	)	$	6,257	$	(4,071	)	Net of tax
Pension, postretirement and other post-employment benefits
Amortization of actuarial gains (losses), net	$	2,236	$	—		$	2,236	$	—		Non-service related pension and postretirement benefit (costs) credits
Pension settlement	197		613			626		1,984			Non-service related pension and postretirement benefit (costs) credits
	—		—			—		—			Provision for (benefit from) income taxes
	$	2,433	$	613		$	2,862	$	1,984		Net of tax
Available-for-sale securities	$	35	$	8		$	50	$	24		Interest and investment income
	—		—			—		—			Provision for (benefit from) income taxes
	$	35	$	8		$	50	$	24		Net of tax