Comprehensive income (loss) (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Accumulated comprehensive loss

The after-tax changes in the components of accumulated other comprehensive loss were as follows:

Three Months Ended March 31, 2019	Net Unrealized Gain (Loss) on Derivative Instruments Qualifying as Hedges			Postretirement Liability Adjustment			Net Unrealized Gain (Loss) on Available-for-sale Investments			Total Accumulated Other Comprehensive Loss
	(In thousands)
Balance at beginning of period	$	(2,161	)	$	(36,069	)	$	(112	)	$	(38,342	)
Other comprehensive income before reclassifications	—			—			39			39
Amounts reclassified from accumulated other comprehensive loss	397			310			28			735
Net current-period other comprehensive income	397			310			67			774
Balance at end of period	$	(1,764	)	$	(35,759	)	$	(45	)	$	(37,568	)

Three Months Ended March 31, 2018	Net Unrealized Gain (Loss) on Derivative Instruments Qualifying as Hedges			Postretirement Liability Adjustment			Foreign Currency Translation Adjustment			Net Unrealized Gain (Loss) on Available-for-sale Investments			Total Accumulated Other Comprehensive Loss
	(In thousands)
Balance at beginning of period	$	(1,934	)	$	(35,163	)	$	(155	)	$	(82	)	$	(37,334	)
Other comprehensive loss before reclassifications	—			—			(2		)	(105		)	(107		)
Amounts reclassified from accumulated other comprehensive loss	92			418			—			30			540
Net current-period other comprehensive income (loss)	92			418			(2		)	(75		)	433
Reclassification adjustment of prior period tax effects related to TCJA included in accumulated other comprehensive loss	(389		)	(7,520		)	(33		)	(17		)	(7,959		)
Balance at end of period	$	(2,231	)	$	(42,265	)	$	(190	)	$	(174	)	$	(44,860	)

Reclassification out of accumulated other comprehensive loss

The following amounts were reclassified out of accumulated other comprehensive loss into net income. The amounts presented in parenthesis indicate a decrease to net income on the Consolidated Statements of Income. The reclassifications were as follows:

	Three Months Ended						Location on Consolidated Statements of Income
	March 31,
	2019			2018
	(In thousands)
Reclassification adjustment for loss on derivative instruments included in net income	$	(148	)	$	(148	)	Interest expense
	(249		)	56			Income taxes
	(397		)	(92		)
Amortization of postretirement liability losses included in net periodic benefit cost (credit)	(410		)	(573		)	Other income
	100			155			Income taxes
	(310		)	(418		)
Reclassification adjustment on available-for-sale investments included in net income	(35		)	(37		)	Other income
	7			7			Income taxes
	(28		)	(30		)
Total reclassifications	$	(735	)	$	(540	)