Stockholder's Equity - Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2017



	Defined Benefit			Commodity
	Pension and			Contracts
	Postretirement			Cash Flow
	Plan Items			Hedges			Total
(in thousands)
As of December 31, 2016	$	(5,360	)	$	482		$	(4,878	)
Other comprehensive (loss)/income before reclassifications	(9		)	837			828
Amounts reclassified from accumulated other comprehensive (loss)/income	180			(1,374		)	(1,194		)
Net current-period other comprehensive (loss)/income	171			(537		)	(366		)
As of June 30, 2017	$	(5,189	)	$	(55	)	$	(5,244	)



	Defined Benefit			Commodity
	Pension and			Contracts
	Postretirement			Cash Flow
	Plan Items			Hedges			Total
(in thousands)
As of December 31, 2015	$	(5,580	)	$	(260	)	$	(5,840	)
Other comprehensive income before reclassifications	—			525			525
Amounts reclassified from accumulated other comprehensive loss	176			(29		)	147
Net prior-period other comprehensive income	176			496			672
As of June 30, 2016	$	(5,404	)	$	236		$	(5,168	)



	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
(in thousands)
Amortization of defined benefit pension and postretirement plan items:
Prior service credit ⁽¹⁾	$	20		$	20		$	39		$	40
Net loss⁽¹⁾	(170		)	(166		)	(339		)	(333		)
Total before income taxes	(150		)	(146		)	(300		)	(293		)
Income tax benefit	61			58			120			117
Net of tax	$	(89	)	$	(88	)	$	(180	)	$	(176	)

Gains and losses on commodity contracts cash flow hedges
Propane swap agreements ⁽²⁾	$	77		$	—		$	465		$	(322	)
Natural gas futures ⁽²⁾	631			211			1,781			359
Total before income taxes	708			211			2,246			37
Income tax (expense) benefit	(273		)	(81		)	(872		)	(8		)
Net of tax	435			130			1,374			29
Total reclassifications for the period	$	346		$	42		$	1,194		$	(147	)