Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2017

Public Utilities, Property, Plant and Equipment [Abstract]

Public Utility Property, Plant, and Equipment

The following table sets forth the major classifications of our property, plant, and equipment and accumulated depreciation:

	June 30,				December 31,
In thousands	2017		2016		2016
Utility plant in service	$	2,901,791	$	2,783,883	$	2,843,243
Utility construction work in progress	127,383		57,068		62,264
Less: Accumulated depreciation	925,589		890,028		903,096
Utility plant, net	2,103,585		1,950,923		2,002,411
Non-utility plant in service	299,366		297,809		299,378
Non-utility construction work in progress	5,128		7,871		3,931
Less: Accumulated depreciation	47,495		42,151		44,820
Non-utility plant, net	256,999		263,529		258,489
Total property, plant, and equipment	$	2,360,584	$	2,214,452	$	2,260,900
Capital expenditures in accrued liabilities	$	42,684	$	11,345	$	9,547