Accumulated other comprehensive income (loss) (Tables)

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Accumulated comprehensive loss

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

	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)
At December 31, 2019	$	(1,430	)	$	(40,734	)	$	62		$	(42,102	)
Other comprehensive income before reclassifications	—			—			135			135
Amounts reclassified from (to) accumulated other comprehensive loss	111			462			(1		)	572
Net current-period other comprehensive income	111			462			134			707
At March 31, 2020	$	(1,319	)	$	(40,272	)	$	196		$	(41,395	)

	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)
At December 31, 2018	$	(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
At March 31, 2019	$	(1,764	)	$	(35,759	)	$	(45	)	$	(37,568	)

Reclassification out of accumulated other comprehensive loss

The following amounts were reclassified between accumulated other comprehensive loss and 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,
	2020			2019
	(In thousands)
Reclassification adjustment for loss on derivative instruments included in net income	$	(147	)	$	(148	)	Interest expense
	36			(249		)	Income taxes
	(111		)	(397		)
Amortization of postretirement liability losses included in net periodic benefit cost	(611		)	(410		)	Other income
	149			100			Income taxes
	(462		)	(310		)
Reclassification adjustment on available-for-sale investments included in net income	1			(35		)	Other income
	—			7			Income taxes
	1			(28		)
Total reclassifications	$	(572	)	$	(735	)