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Other comprehensive (loss) income
 3 Months Ended
Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Other comprehensive (loss) income
Reclassification adjustments – Information regarding amounts reclassified from accumulated other comprehensive loss to net (loss) income was as follows:
Accumulated other comprehensive loss components
 
Amounts reclassified from accumulated other comprehensive loss
 
Affected line item in consolidated statements of comprehensive (loss) income
 
 
Quarter Ended
March 31,
 
 
(in thousands)
 
2020
 
2019
 
 
Realized gain on interest rate swap
 
$
93

 
$
—

 
Interest expense
Tax expense
 
(24
)
 
—

 
Income tax benefit (provision)
Realized gain on interest rate swap, net of tax
 
69

 
—

 
Net income
Amortization of postretirement benefit plan items:
 
 
 
 
 
 
Prior service credit
 
355

 
355

 
Other income
Net actuarial loss
 
(575
)
 
(806
)
 
Other income
Total amortization
 
(220
)
 
(451
)
 
Other income
Tax benefit
 
12

 
70

 
Income tax benefit (provision)
Amortization of postretirement benefit plan items, net of tax
 
(208
)
 
(381
)
 
Net income
Total reclassifications, net of tax
 
$
(139
)
 
$
(381
)
 
 


Accumulated other comprehensive loss – Changes in the components of accumulated other comprehensive loss during the quarter ended March 31, 2020 were as follows:
(in thousands)
 
Postretirement benefit plans
 
Net unrealized loss on available-for-sale debt securities(1)
 
Net unrealized loss on cash flow hedge(2)
 
Currency translation adjustment
 
Accumulated other comprehensive loss
Balance, December 31, 2019
 
$
(28,406
)
 
$
(275
)
 
$
(1,097
)
 
$
(18,169
)
 
$
(47,947
)
Other comprehensive income (loss) before reclassifications
 
—

 
189

 
(4,980
)
 
(7,355
)
 
(12,146
)
Amounts reclassified from accumulated other comprehensive loss
 
208

 
—

 
(69
)
 
—

 
139

Net current-period other comprehensive income (loss)
 
208

 
189

 
(5,049
)
 
(7,355
)
 
(12,007
)
Balance, March 31, 2020
 
$
(28,198
)
 
$
(86
)
 
$
(6,146
)
 
$
(25,524
)
 
$
(59,954
)


(1) Other comprehensive income before reclassifications is net of income tax expense of $66.

(2) Other comprehensive loss before reclassifications is net of an income tax benefit of $1,736.