Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Changes in accumulated other comprehensive income (loss) by component, net of tax

Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows:

(In thousands)	Postretirement Benefits
Balance at December 31, 2014	$	(2,151	)
Other comprehensive income (loss) before reclassifications	1,786
Net current-period other comprehensive income (loss)	1,786
Balance at December 31, 2015	$	(365	)
Other comprehensive income (loss) before reclassifications	1,280
Amounts reclassified from accumulated other comprehensive income (loss)	70
Net current-period other comprehensive income	1,350
Balance at December 31, 2016	$	985
Other comprehensive income (loss) before reclassifications	2,815
Amounts reclassified from accumulated other comprehensive income (loss)	(1,723		)
Net current-period other comprehensive income	1,092
Balance at December 31, 2017	$	2,077

Schedule of amount reclassified from accumulated other comprehensive income (loss) into the Condensed Consolidated Statement of Operations

Amounts reclassified from accumulated other comprehensive income (loss) into the Consolidated Statement of Operations were as follows:

	Year Ended December 31,								Affected Line Item in the Consolidated Statement of Operations
(In thousands)	2017			2016			2015
Postretirement benefits
Amortization of prior service cost	2,733			(111		)	—		General and administrative expense
Total before tax	2,733			(111		)	—		Income (loss) before income taxes
	(1,010		)	41			—		Income tax benefit (expense)
Total reclassifications for the period	$	1,723		$	(70	)	$	—	Net income (loss)