Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

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	)