Gas Reserves (tables)

12 Months Ended

Dec. 31, 2013

Gas Reserves [Abstract]

Gas Reserves Table [Text Block]

In thousands	2013		2012
Gas reserves, current	$	20,646	$	14,966
Gas reserves, non-current	140,573		92,179
Less: Accumulated amortization	18,575		7,486
Total gas reserves	142,644		99,659
Less: Deferred taxes on gas reserves	42,117		28,329
Net investment in gas reserves	$	100,527	$	71,330