Comprehensive income (loss)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Comprehensive income (loss)

Comprehensive income (loss)

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

Three Months Ended September 30, 2017	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	$	(2,117	)	$	(33,469	)	$	(155	)	$	(48	)	$	(35,789	)
Other comprehensive income (loss) before reclassifications	—			—			15			(19		)	(4		)
Amounts reclassified from accumulated other comprehensive loss	92			333			—			27			452
Net current-period other comprehensive income	92			333			15			8			448
Balance at end of period	$	(2,025	)	$	(33,136	)	$	(140	)	$	(40	)	$	(35,341	)

Three Months Ended September 30, 2016	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	$	(2,484	)	$	(35,604	)	$	(144	)	$	26		$	(38,206	)
Other comprehensive loss before reclassifications	—			—			(4		)	(42		)	(46		)
Amounts reclassified from accumulated other comprehensive loss	92			236			—			33			361
Net current-period other comprehensive income (loss)	92			236			(4		)	(9		)	315
Balance at end of period	$	(2,392	)	$	(35,368	)	$	(148	)	$	17		$	(37,891	)

Nine Months Ended September 30, 2017	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	$	(2,300	)	$	(33,221	)	$	(149	)	$	(63	)	$	(35,733	)
Other comprehensive income (loss) before reclassifications	—			—			9			(70		)	(61		)
Amounts reclassified from accumulated other comprehensive loss	275			1,002			—			93			1,370
Amounts reclassified to accumulated other comprehensive loss from a regulatory asset	—			(917		)	—			—			(917		)
Net current-period other comprehensive income	275			85			9			23			392
Balance at end of period	$	(2,025	)	$	(33,136	)	$	(140	)	$	(40	)	$	(35,341	)

Nine Months Ended September 30, 2016	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	$	(2,667	)	$	(34,257	)	$	(200	)	$	(24	)	$	(37,148	)
Other comprehensive income (loss) before reclassifications	—			—			52			(65		)	(13		)
Amounts reclassified from accumulated other comprehensive loss	275			(1,111		)	—			106			(730		)
Net current-period other comprehensive income (loss)	275			(1,111		)	52			41			(743		)
Balance at end of period	$	(2,392	)	$	(35,368	)	$	(148	)	$	17		$	(37,891	)

Reclassifications out of accumulated other comprehensive loss were as follows:

	Three Months Ended						Nine Months Ended						Location on Consolidated Statements of Income
	September 30,						September 30,
	2017			2016			2017			2016
	(In thousands)
Reclassification adjustment for loss on derivative instruments included in net income (loss)	$	(148	)	$	(148	)	$	(443	)	$	(445	)	Interest expense
	56			56			168			170			Income taxes
	(92		)	(92		)	(275		)	(275		)
Amortization of postretirement liability gains (losses) included in net periodic benefit cost (credit)	(536		)	(379		)	(1,611		)	1,787			(a)
	203			143			609			(676		)	Income taxes
	(333		)	(236		)	(1,002		)	1,111
Reclassification adjustment for loss on available-for-sale investments included in net income (loss)	(41		)	(51		)	(143		)	(163		)	Other income
	14			18			50			57			Income taxes
	(27		)	(33		)	(93		)	(106		)
Total reclassifications	$	(452	)	$	(361	)	$	(1,370	)	$	730

(a) Included in net periodic benefit cost (credit). For more information, see Note 14.