Gas Reserves (tables)

12 Months Ended

Dec. 31, 2014

Gas Reserves [Abstract]

Gas Reserves Table [Text Block]

In thousands	2014		2013
Gas reserves, current	$	20,020	$	20,646
Gas reserves, non-current	167,190		140,573
Less: Accumulated amortization	37,910		18,575
Total gas reserves(1)	149,300		142,644
Less: Deferred taxes on gas reserves	18,551		42,117
Net investment in gas reserves(1)	$	130,749	$	100,527