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Components of accumulated other comprehensive loss | 6 Months Ended
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Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Components of accumulated other comprehensive loss | Components of accumulated other comprehensive loss
| June 30, 2016 | December 31, 2015
Defined benefit plan liabilities | $ | (119,405 | ) | $ | (121,910 | )
Unrealized loss on financial instruments | (1,528 | ) | (1,435 | )
Other comprehensive loss before income tax effect | (120,933 | ) | (123,345 | )
Income tax effect (1) | 9,930 |  | 10,695 |
Accumulated other comprehensive loss | $ | (111,003 | ) | $ | (112,650 | )
(1) The allocation of the income tax effect to the components of other comprehensive loss is as follows:
| June 30, 2016 | December 31, 2015
Defined benefit plan liabilities | $ | 10,461 |  | $ | 11,243 |
Unrealized loss on financial instruments | (531 | ) | (548 | )
The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive loss ("AOCL"):
| Defined benefit plan and other postretirement liabilities | Unrealized loss on financial instruments | Total, net of tax
Balance, April 1, 2016 | $ | (109,806 | ) | $ | (2,021 | ) | $ | (111,827 | )
Net amount reclassified to net loss | 862 |  | (38 | ) | 824 |
Balance, June 30, 2016 | $ | (108,944 | ) | $ | (2,059 | ) | $ | (111,003 | )
Balance, April 1, 2015 | $ | (115,735 | ) | $ | (1,869 | ) | $ | (117,604 | )
Other comprehensive income before reclassifications (1) | 18,042 |  | — |  | 18,042 |
Net amount reclassified to net loss | 1,358 |  | (38 | ) | 1,320 |
Balance, June 30, 2015 | $ | (96,335 | ) | $ | (1,907 | ) | $ | (98,242 | )
Balance, December 31, 2015 | $ | (110,667 | ) | $ | (1,983 | ) | $ | (112,650 | )
Net amount reclassified to net loss | 1,723 |  | (76 | ) | 1,647 |
Balance, June 30, 2016 | $ | (108,944 | ) | $ | (2,059 | ) | $ | (111,003 | )
Balance, December 31, 2014 | $ | (115,852 | ) | $ | (1,830 | ) | $ | (117,682 | )
Other comprehensive income before reclassifications (1) | 18,042 |  | — |  | 18,042 |
Net amount reclassified to net income | 1,475 |  | (77 | ) | 1,398 |
Balance, June 30, 2015 | $ | (96,335 | ) | $ | (1,907 | ) | $ | (98,242 | )
(1) The gain in other comprehensive income before reclassifications was due to a plan remeasurement related to labor negotiations, census and other actuarial adjustments. Reclassifications out of AOCL were included in the consolidated statements of operations as follows:
|  | For the three months ended June 30, | For the six months ended June 30,
AOCL Components | Location | 2016 | 2015 | 2016 | 2015
Defined benefit plan and other postretirement liabilities | Cost of goods sold | $ | 778 |  | $ | 1,612 |  | $ | 1,555 |  | $ | 1,753 |
| Selling, general and administrative expenses | 125 |  | 136 |  | 250 |  | 503 |
| Other operating expense, net | 350 |  | — |  | 700 |  | — |
| Income tax expense | (391 | ) | (390 | ) | (782 | ) | (781 | )
| Net of tax | $ | 862 |  | $ | 1,358 |  | $ | 1,723 |  | $ | 1,475 |
Unrealized loss on financial instruments | Cost of goods sold | $ | (47 | ) | $ | (46 | ) | $ | (93 | ) | $ | (93 | )
| Income tax benefit | 9 |  | 8 |  | 17 |  | 16 |
| Net of tax | $ | (38 | ) | $ | (38 | ) | $ | (76 | ) | $ | (77 | )

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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