Accumulated Other Comprehensive Income

3 Months Ended

Mar. 31, 2019

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

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Income

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	3,593			—		377			3,970
Amounts reclassified from AOCI	(876		)	—		—			(876		)
Balance at March 31, 2019	$	6,045		$	40,311	$	34		$	46,390

The following amounts were reclassified out of AOCI:

	Three Months Ended March 31,
Details About AOCI Components	2019		2018		Line Item in the Condensed Consolidated Statement of Operations
(In thousands)
Coal hedges	$	361	$	—	Revenues
Interest rate hedges	515		140		Interest expense
	—		—		Provision for (benefit from) income taxes
	$	876	$	140	Net of tax
Available-for-sale securities	$	—	$	—	Interest and investment income
	—		—		Provision for (benefit from) income taxes
	$	—	$	—	Net of tax