CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Sep. 30, 2019
PROPERTY, PLANT AND EQUIPMENT
Utility plant, at cost	$ 2,708,934	$ 2,625,730
Construction work in progress	315,865	237,011
Nonutility plant and equipment, at cost	1,350,888	861,904
Construction work in progress	176,922	62,492
Total property, plant and equipment	4,552,609	3,787,137
Accumulated depreciation and amortization, utility plant	(576,186)	(585,160)
Accumulated depreciation and amortization, nonutility plant and equipment	(179,582)	(156,033)
Property, plant and equipment, net	3,796,841	3,045,944
CURRENT ASSETS
Cash and cash equivalents	25,968	2,676
Customer accounts receivable
Billed	195,683	139,263
Unbilled revenues	41,161	6,510
Allowance for doubtful accounts	(6,803)	(6,148)
Regulatory assets	56,866	32,871
Gas in storage, at average cost	76,353	169,803
Materials and supplies, at average cost	17,819	14,475
Prepaid expenses	9,789	8,333
Prepaid and accrued taxes	1,184	22,602
Derivatives, at fair value	35,428	25,103
Restricted broker margin accounts	23,946	73,723
Other	23,480	22,395
Total current assets	500,874	511,606
NONCURRENT ASSETS
Investments in equity method investees	204,246	200,268
Regulatory assets	450,039	496,637
Operating lease assets	102,395
Derivatives, at fair value	8,654	7,426
Intangible assets, net	11,434	14,611
Other noncurrent assets	80,716	96,493
Total noncurrent assets	857,484	815,435
Total assets	5,155,199	4,372,985
CAPITALIZATION
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding March 31, 2020 — 95,643,185; September 30, 2019 — 89,998,788	240,221	226,649
Premium on common stock	493,956	291,331
Accumulated other comprehensive loss, net of tax	(34,639)	(31,787)
Treasury stock at cost and other; shares March 31, 2020 — 445,734; September 30, 2019 —660,734	(4,523)	(10,436)
Retained earnings	1,194,092	1,075,960
Common stock equity	1,889,107	1,551,717
Long-term debt	1,576,708	1,537,177
Total capitalization	3,465,815	3,088,894
CURRENT LIABILITIES
Current maturities of long-term debt	22,048	21,419
Short-term debt	466,573	25,450
Gas purchases payable	126,338	137,271
Gas purchases payable to related parties	801	790
Accounts payable and other	93,431	129,724
Dividends payable	29,888	28,122
Accrued taxes	4,232	3,394
New Jersey Clean Energy Program	5,868	15,468
Derivatives, at fair value	51,686	57,623
Operating lease liabilities	4,156
Customers' credit balances and deposits	19,328	27,116
Total current liabilities	824,349	446,377
NONCURRENT LIABILITIES
Deferred income taxes	187,938	190,663
Deferred investment tax credits	3,493	3,653
Deferred gain	1,470	1,554
Derivatives, at fair value	12,028	18,821
Manufactured gas plant remediation	128,868	131,080
Postemployment employee benefit liability	195,441	246,517
Regulatory liabilities	199,737	202,435
Operating lease liabilities	96,713
Asset retirement obligation	32,243	31,046
Other	7,104	11,945
Total noncurrent liabilities	865,035	837,714
Commitments and contingent liabilities (Note 13)
Total capitalization and liabilities	$ 5,155,199	$ 4,372,985