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Changes in Cumulative Other Comprehensive Loss (Tables)
 6 Months Ended
Jun. 30, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Changes in Cumulative Other Comprehensive Loss
The following tables summarize the changes in Cumulative other comprehensive loss for the six months ended June 30, 2015 and 2014:
(Thousands of dollars)
 
 
 
 
 
 
 
 
Foreign Currency Translation Adjustments
 
Net Actuarial (Losses) Gains and Prior Service Costs Recognized for Employee Benefit Plans
 
Unrealized Net Gains (Losses) on Available-for-Sale Securities
 
Total Cumulative Other Comprehensive Loss
Balance at December 31, 2014
$
(354,384
)
 
$
(118,167
)
 
$
593

 
$
(471,958
)
Other comprehensive loss before reclassifications(1)
(45,554
)
 
 
 
52

 
(45,502
)
Amounts reclassified from other comprehensive (loss) income(2)


 
853

 
(55
)
 
798

Net other comprehensive (loss) income
(45,554
)
 
853

 
(3
)
 
(44,704
)
Balance at June 30, 2015
$
(399,938
)
 
$
(117,314
)
 
$
590

 
$
(516,662
)

(1) Net of taxes of $(34) for unrealized net gains on available-for-sale securities.
(2) Net of taxes of $(699) for net actuarial losses and prior service costs recognized for employee benefit plans and $33 for realized gains on the sale of available-for-sale securities.
(Thousands of dollars)
 
 
 
 
 
 
 
 
Foreign Currency Translation Adjustments
 
Net Actuarial Losses (Gains) and Prior Service Costs Recognized for Employee Benefit Plans
 
Unrealized Net Gains (Losses) on Available-for-Sale Securities
 
Total Cumulative Other Comprehensive Loss
Balance at December 31, 2013
$
(250,942
)
 
$
(70,611
)
 
$
509

 
$
(321,044
)
Other comprehensive loss before reclassifications(3)
4,612

 
(570
)
 
516

 
4,558

Amounts reclassified from other comprehensive (loss) income(4)
 
 
1,015

 
(45
)
 
970

Net other comprehensive loss
4,612

 
445

 
471

 
5,528

Balance at June 30, 2014
$
(246,330
)
 
$
(70,166
)
 
$
980

 
$
(315,516
)

(3) Net of taxes of $244 for net actuarial losses and prior service costs recognized for employee benefit plans and $(324) for unrealized net losses on available-for-sale securities.
(4) Net of taxes of $(417) for net actuarial losses and prior service costs recognized for employee benefit plans and $28 for realized gains on the sale of available-for-sale securities.