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Comprehensive income (loss) (Tables) | 6 Months Ended
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Jun. 30, 2015
Comprehensive income (loss) [Abstract] |
Comprehensive income (loss) | The after-tax changes in the components of accumulated other comprehensive loss were as follows:
Three Months Ended June 30, 2015 | 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 | $ | (2,972 | ) | $ | (37,843 | ) | $ | (139 | ) | $ | 30 |  | $ | (40,924 | )
Other comprehensive income (loss) before reclassifications | — |  | — |  | 9 |  | (43 | ) | (34 | )
Amounts reclassified from accumulated other comprehensive loss | 100 |  | 584 |  | — |  | 28 |  | 712 |
Net current-period other comprehensive income (loss) | 100 |  | 584 |  | 9 |  | (15 | ) | 678 |
Balance at end of period | $ | (2,872 | ) | $ | (37,259 | ) | $ | (130 | ) | $ | 15 |  | $ | (40,246 | )
Three Months Ended June 30, 2014 | Net Unrealized Gain (Loss) on Derivative Instruments Qualifying as Hedges | Postretirement Liability Adjustment | Foreign Currency Translation Adjustment | Net Unrealized Gain on Available-for-sale Investments | Total Accumulated Other Comprehensive Loss
| (In thousands)
Balance at beginning of period | $ | (3,421 | ) | $ | (33,532 | ) | $ | (621 | ) | $ | 36 |  | $ | (37,538 | )
Other comprehensive income before reclassifications | — |  | — |  | 42 |  | 8 |  | 50 |
Amounts reclassified from accumulated other comprehensive loss | 13 |  | 245 |  | — |  | 32 |  | 290 |
Net current-period other comprehensive income | 13 |  | 245 |  | 42 |  | 40 |  | 340 |
Balance at end of period | $ | (3,408 | ) | $ | (33,287 | ) | $ | (579 | ) | $ | 76 |  | $ | (37,198 | )
Six Months Ended June 30, 2015 | 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 | $ | (3,071 | ) | $ | (38,218 | ) | $ | (829 | ) | $ | 15 |  | $ | (42,103 | )
Other comprehensive loss before reclassifications | — |  | — |  | (103 | ) | (64 | ) | (167 | )
Amounts reclassified from accumulated other comprehensive loss | 199 |  | 959 |  | 802 |  | 64 |  | 2,024 |
Net current-period other comprehensive income | 199 |  | 959 |  | 699 |  | — |  | 1,857 |
Balance at end of period | $ | (2,872 | ) | $ | (37,259 | ) | $ | (130 | ) | $ | 15 |  | $ | (40,246 | )
Six Months Ended June 30, 2014 | Net Unrealized Gain (Loss) on Derivative Instruments Qualifying as Hedges | Postretirement Liability Adjustment | Foreign Currency Translation Adjustment | Net Unrealized Gain on Available-for-sale Investments | Total Accumulated Other Comprehensive Loss
| (In thousands)
Balance at beginning of period | $ | (3,765 | ) | $ | (33,807 | ) | $ | (667 | ) | $ | 34 |  | $ | (38,205 | )
Other comprehensive income before reclassifications | — |  | — |  | 88 |  | 10 |  | 98 |
Amounts reclassified from accumulated other comprehensive loss | 357 |  | 520 |  | — |  | 32 |  | 909 |
Net current-period other comprehensive income | 357 |  | 520 |  | 88 |  | 42 |  | 1,007 |
Balance at end of period | $ | (3,408 | ) | $ | (33,287 | ) | $ | (579 | ) | $ | 76 |  | $ | (37,198 | )
Reclassification out of accumulated other comprehensive income | Reclassifications out of accumulated other comprehensive loss were as follows:
| Three Months Ended | Six Months Ended | Location on Consolidated Statements of Income
| June 30, | June 30,
| 2015 | 2014 | 2015 | 2014
| (In thousands) |
Reclassification adjustment for loss on derivative instruments included in net income (loss): |  |  |  |  |
Interest rate derivative instruments | $ | (160 | ) | $ | (160 | ) | $ | (320 | ) | $ | (320 | ) | Interest expense
| 60 |  | 60 |  | 121 |  | 121 |  | Income taxes
| (100 | ) | (100 | ) | (199 | ) | (199 | ) |
Commodity derivative instruments, net of tax | — |  | 87 |  | — |  | (158 | ) | Discontinued operations
| (100 | ) | (13 | ) | (199 | ) | (357 | ) |
Amortization of postretirement liability losses included in net periodic benefit cost | (1,004 | ) | (395 | ) | (1,608 | ) | (838 | ) | (a)
| 420 |  | 150 |  | 649 |  | 318 |  | Income taxes
| (584 | ) | (245 | ) | (959 | ) | (520 | ) |
Reclassification adjustment for loss on foreign currency translation adjustment included in net income (loss) | — |  | — |  | (1,293 | ) | — |  | Other income
| — |  | — |  | 491 |  | — |  | Income taxes
| — |  | — |  | (802 | ) | — |  |
Reclassification adjustment for loss on available-for-sale investments included in net income (loss) | (43 | ) | (49 | ) | (98 | ) | (49 | ) | Other income
| 15 |  | 17 |  | 34 |  | 17 |  | Income taxes
| (28 | ) | (32 | ) | (64 | ) | (32 | ) |
Total reclassifications | $ | (712 | ) | $ | (290 | ) | $ | (2,024 | ) | $ | (909 | ) |
(a) Included in net periodic benefit cost (credit). For more information, see Note 15.

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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