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REGULATION (Tables)
12 Months Ended
Sep. 30, 2017
Regulated Operations [Abstract]  
Schedule of Regulatory Assets
Regulatory assets and liabilities included on the Consolidated Balance Sheets as of September 30, are comprised of the following:
(Thousands)
2017
2016
Regulatory assets-current
 
 
Conservation Incentive Program
$
17,669

$
36,957

New Jersey Clean Energy Program
14,202

14,232

Underrecovered gas costs
9,910


Derivatives at fair value, net
9,010

3,097

Total current regulatory assets
$
50,791

$
54,286

Regulatory assets-noncurrent
 
 
Environmental remediation costs:
 
 
Expended, net of recoveries
$
28,547

$
19,595

Liability for future expenditures
149,000

172,000

Deferred income taxes
21,795

20,273

Derivatives at fair value, net

23,384

SAVEGREEN
16,302

25,208

Postemployment and other benefit costs
141,433

157,027

Deferred Superstorm Sandy costs
13,030

15,201

Other noncurrent regulatory assets
5,812

8,606

Total noncurrent regulatory assets
$
375,919

$
441,294

Regulatory liability-current
 
 
Derivatives at fair value, net
78


Overrecovered gas costs

9,469

Total current regulatory liabilities
$
78

$
9,469

Regulatory liabilities-noncurrent
 
 
Cost of removal obligation
$
7,902

$
30,549

New Jersey Clean Energy Program
5,795

10,657

Other noncurrent regulatory liabilities
664

205

Derivatives at fair value, net
146


Total noncurrent regulatory liabilities
$
14,507

$
41,411

Schedule of Regulatory Liabilities
Regulatory assets and liabilities included on the Consolidated Balance Sheets as of September 30, are comprised of the following:
(Thousands)
2017
2016
Regulatory assets-current
 
 
Conservation Incentive Program
$
17,669

$
36,957

New Jersey Clean Energy Program
14,202

14,232

Underrecovered gas costs
9,910


Derivatives at fair value, net
9,010

3,097

Total current regulatory assets
$
50,791

$
54,286

Regulatory assets-noncurrent
 
 
Environmental remediation costs:
 
 
Expended, net of recoveries
$
28,547

$
19,595

Liability for future expenditures
149,000

172,000

Deferred income taxes
21,795

20,273

Derivatives at fair value, net

23,384

SAVEGREEN
16,302

25,208

Postemployment and other benefit costs
141,433

157,027

Deferred Superstorm Sandy costs
13,030

15,201

Other noncurrent regulatory assets
5,812

8,606

Total noncurrent regulatory assets
$
375,919

$
441,294

Regulatory liability-current
 
 
Derivatives at fair value, net
78


Overrecovered gas costs

9,469

Total current regulatory liabilities
$
78

$
9,469

Regulatory liabilities-noncurrent
 
 
Cost of removal obligation
$
7,902

$
30,549

New Jersey Clean Energy Program
5,795

10,657

Other noncurrent regulatory liabilities
664

205

Derivatives at fair value, net
146


Total noncurrent regulatory liabilities
$
14,507

$
41,411