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Components of accumulated other comprehensive loss
 9 Months Ended
Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Components of accumulated other comprehensive loss
Components of accumulated other comprehensive loss
 
September 30, 2015
December 31, 2014
Defined benefit plan liabilities
$
(111,560
)
$
(128,664
)
Unrealized loss on financial instruments
(1,389
)
(1,249
)
Other comprehensive loss before income tax effect
(112,949
)
(129,913
)
Income tax effect (1)
11,083

12,231

Accumulated other comprehensive loss
$
(101,866
)
$
(117,682
)
(1)The allocation of the income tax effect to the components of other comprehensive income is as follows:
 
September 30, 2015
December 31, 2014
Defined benefit plan liabilities
$
11,639

$
12,812

Unrealized loss on financial instruments
(556
)
(581
)


The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive loss ("AOCI"):
 
Defined benefit plan and other postretirement liabilities
Equity in investee other comprehensive income
Unrealized loss on financial instruments
Total, net of tax
Balance, July 1, 2015
$
(96,335
)
$
—

$
(1,907
)
$
(98,242
)
Other comprehensive income before reclassifications
(4,114
)
—

—

(4,114
)
Net amount reclassified to net loss
529

—

(39
)
490

Balance, September 30, 2015
$
(99,920
)
$
—

$
(1,946
)
$
(101,866
)
 
 
 
 
 
Balance, July 1, 2014
$
(77,843
)
$
(12,266
)
$
(1,755
)
$
(91,864
)
Other comprehensive income (loss) before reclassifications
—

(17
)
—

(17
)
Net amount reclassified to net income
(98
)
—

(38
)
(136
)
Balance, September 30, 2014
$
(77,941
)
$
(12,283
)
$
(1,793
)
$
(92,017
)
 
 
 
 
 
Balance, December 31, 2014
$
(115,852
)
$
—

$
(1,830
)
$
(117,682
)
Other comprehensive income before reclassifications (1)
13,928

—

—

13,928

Net amount reclassified to net income
2,004

—

(116
)
1,888

Balance, September 30, 2015
$
(99,920
)
$
—

$
(1,946
)
$
(101,866
)
 
 
 
 
 
Balance, December 31, 2013
$
(77,921
)
$
(12,232
)
$
(1,679
)
$
(91,832
)
Other comprehensive income (loss) before reclassifications
440

(51
)
—

389

Net amount reclassified to net loss
(460
)
—

(114
)
(574
)
Balance, September 30, 2014
$
(77,941
)
$
(12,283
)
$
(1,793
)
$
(92,017
)


(1)
The gain in other comprehensive income before reclassifications is due to a plan remeasurement related to our labor negotiations, census and other actuarial adjustments.
Reclassifications out of AOCI were included in the consolidated statements of operations as follows:
 
 
For the three months ended September 30,
For the nine months ended September 30,
AOCI Components
Location
2015
2014
2015
2014
Defined benefit plan and other postretirement liabilities
Cost of goods sold
$
669

$
308

$
2,422

$
924

 
Selling, general and administrative expenses
252

142

755

427

 
Income tax expense
(392
)
(548
)
(1,173
)
(1,811
)
 
Net of tax
$
529

$
(98
)
$
2,004

$
(460
)
 
 
 
 
 
 
Unrealized loss on financial instruments
Cost of goods sold
$
(47
)
$
(46
)
$
(140
)
$
(139
)
 
Income tax expense
8

8

24

25

 
Net of tax
$
(39
)
$
(38
)
$
(116
)
$
(114
)