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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2015
Equity [Abstract] |
Changes in Accumulated Other Comprehensive Loss |
|  | Defined Benefit |  | Commodity |  |
|  | Pension and |  | Contracts |  |
|  | Postretirement |  | Cash Flow |  |
|  | Plan Items |  | Hedges |  | Total
(in thousands) |  |  |  |  |  |
As of December 31, 2014 |  | $ | (5,643 | ) |  | $ | (33 | ) |  | $ | (5,676 | )
Other comprehensive loss before reclassifications |  | — |  |  | (1 | ) |  | (1 | )
Amounts reclassified from accumulated other comprehensive loss |  | 165 |  |  | 33 |  |  | 198 |
Net current-period other comprehensive income |  | 165 |  |  | 32 |  |  | 197 |
As of June 30, 2015 |  | $ | (5,478 | ) |  | $ | (1 | ) |  | $ | (5,479 | )
|  | Defined Benefit |  | Commodity |  |
|  | Pension and |  | Contracts |  |
|  | Postretirement |  | Cash Flow |  |
|  | Plan Items |  | Hedges |  | Total
(in thousands) |  |  |  |  |  |
As of December 31, 2013 |  | $ | (2,533 | ) |  | $ | — |  |  | $ | (2,533 | )
Other comprehensive loss before reclassifications |  | — |  |  | (1 | ) |  | (1 | )
Amounts reclassified from accumulated other comprehensive loss |  | 61 |  |  | — |  |  | 61 |
Net current-period other comprehensive income (loss) |  | 61 |  |  | (1 | ) |  | 60 |
As of June 30, 2014 |  | $ | (2,472 | ) |  | $ | (1 | ) |  | $ | (2,473 | )
Reclassifications out of Accumulated Other Comprehensive Income (Loss) |
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
|  | 2015 |  | 2014 |  | 2015 |  | 2014
(in thousands) |  |  |  |  |  |  |  |
Amortization of defined benefit pension and postretirement plan items: |  |  |  |  |  |  |  |
Prior service cost (1) |  | $ | 17 |  |  | $ | 15 |  |  | $ | 34 |  |  | $ | 30 |
Net loss (1) |  | (155 | ) |  | (67 | ) |  | (310 | ) |  | (132 | )
Total before income taxes |  | (138 | ) |  | (52 | ) |  | (276 | ) |  | (102 | )
Income tax benefit |  | 55 |  |  | 21 |  |  | 111 |  |  | 41 |
Net of tax |  | $ | (83 | ) |  | $ | (31 | ) |  | $ | (165 | ) |  | $ | (61 | )
Gains and losses on commodity contracts cash flow hedges |  |  |  |  |  |  |  |
Propane swap agreements (2) |  | $ | (10 | ) |  | $ | 2 |  |  | $ | 2 |  |  | $ | 2 |
Call options (2) |  | — |  |  | — |  |  | (55 | ) |  | — |
Total before income taxes |  | (10 | ) |  | 2 |  |  | (53 | ) |  | 2 |
Income tax benefit |  | 4 |  |  | (1 | ) |  | 21 |  |  | (1 | )
Net of tax |  | (6 | ) |  | 1 |  |  | (32 | ) |  | 1 |
Total reclassifications for the period |  | $ | (89 | ) |  | $ | (30 | ) |  | $ | (197 | ) |  | $ | (60 | )

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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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