REGULATORY ASSETS & REGULATORY LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2014

Regulatory Assets and Liabilities Disclosure [Abstract]

Schedule of Regulatory Assets

Regulatory Assets consisted of the following items (in thousands):

	June 30, 2014		December 31, 2013
Environmental Remediation Costs:
Expended - Net	$	28,612	$	29,945
Liability for Future Expenditures	116,029		119,492
Deferred Asset Retirement Obligation Costs	31,576		31,142
Deferred Pension and Other Postretirement Benefit Costs	59,284		59,284
Deferred Gas Costs - Net	37,371		—
Conservation Incentive Program Receivable	—		10,526
Societal Benefit Costs Receivable	3,287		10,408
Premium for Early Retirement of Debt	—		955
Deferred Interest Rate Contracts	5,494		3,735
Energy Efficiency Tracker	11,779		10,420
Pipeline Supplier Service Charges	6,273		7,106
Pipeline Integrity Cost	3,187		2,902
AFUDC - Equity Related Deferrals	9,568		7,810
Other Regulatory Assets	2,265		2,356
Total Regulatory Assets	$	314,725	$	296,081

Schedule of Regulatory Liabilities

Regulatory Liabilities consisted of the following items (in thousands):

	June 30, 2014		December 31, 2013
Excess Plant Removal Costs	$	38,430	$	40,029
Deferred Revenues - Net	—		19,067
Conservation Incentive Program Payable	9,594		—
Other Regulatory Liabilities	1,768		1,853
Total Regulatory Liabilities	$	49,792	$	60,949