REGULATION (Tables)

12 Months Ended

Sep. 30, 2018

Regulated Operations [Abstract]

Schedule of Regulatory Assets

Regulatory assets and liabilities included on the Consolidated Balance Sheets as of September 30, are composed of the following:

(Thousands)	2018		2017
Regulatory assets-current
New Jersey Clean Energy Program	$	14,052	$	14,202
Underrecovered gas costs	4,137		9,910
Derivatives at fair value, net	108		9,010
Conservation Incentive Program	—		17,669
Total current regulatory assets	$	18,297	$	50,791
Regulatory assets-noncurrent
Environmental remediation costs:
Expended, net of recoveries	$	33,017	$	28,547
Liability for future expenditures	130,800		149,000
Deferred income taxes	17,225		21,795
SAVEGREEN	8,636		16,302
Postemployment and other benefit costs	136,716		141,433
Deferred storm damage costs	10,858		13,030
Cost of removal	22,339		—
Other noncurrent regulatory assets	9,001		5,812
Total noncurrent regulatory assets	$	368,592	$	375,919
Regulatory liability-current
Conservation Incentive Program	$	6,994	$	—
Derivatives at fair value, net	1,191		78
Total current regulatory liabilities	$	8,185	$	78
Regulatory liabilities-noncurrent
Tax Act impact (1)	$	205,410	$	—
Cost of removal	—		7,902
New Jersey Clean Energy Program	1,902		5,795
Other noncurrent regulatory liabilities	1,827		810
Total noncurrent regulatory liabilities	$	209,139	$	14,507

Schedule of Regulatory Liabilities

Regulatory assets and liabilities included on the Consolidated Balance Sheets as of September 30, are composed of the following:

(Thousands)	2018		2017
Regulatory assets-current
New Jersey Clean Energy Program	$	14,052	$	14,202
Underrecovered gas costs	4,137		9,910
Derivatives at fair value, net	108		9,010
Conservation Incentive Program	—		17,669
Total current regulatory assets	$	18,297	$	50,791
Regulatory assets-noncurrent
Environmental remediation costs:
Expended, net of recoveries	$	33,017	$	28,547
Liability for future expenditures	130,800		149,000
Deferred income taxes	17,225		21,795
SAVEGREEN	8,636		16,302
Postemployment and other benefit costs	136,716		141,433
Deferred storm damage costs	10,858		13,030
Cost of removal	22,339		—
Other noncurrent regulatory assets	9,001		5,812
Total noncurrent regulatory assets	$	368,592	$	375,919
Regulatory liability-current
Conservation Incentive Program	$	6,994	$	—
Derivatives at fair value, net	1,191		78
Total current regulatory liabilities	$	8,185	$	78
Regulatory liabilities-noncurrent
Tax Act impact (1)	$	205,410	$	—
Cost of removal	—		7,902
New Jersey Clean Energy Program	1,902		5,795
Other noncurrent regulatory liabilities	1,827		810
Total noncurrent regulatory liabilities	$	209,139	$	14,507