CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
PROPERTY, PLANT AND EQUIPMENT
Utility plant, at cost	$ 2,741,021	$ 2,625,730
Construction work in progress	362,970	237,011
Nonutility plant and equipment, at cost	1,410,428	861,904
Construction work in progress	167,807	62,492
Total property, plant and equipment	4,682,226	3,787,137
Accumulated depreciation and amortization, utility plant	(586,711)	(585,160)
Accumulated depreciation and amortization, nonutility plant and equipment	(191,520)	(156,033)
Property, plant and equipment, net	3,903,995	3,045,944
CURRENT ASSETS
Cash and cash equivalents	42,821	2,676
Customer accounts receivable
Billed	143,059	139,263
Unbilled revenues	8,738	6,510
Allowance for doubtful accounts	(6,975)	(6,148)
Regulatory assets	52,251	32,871
Gas in storage, at average cost	123,962	169,803
Materials and supplies, at average cost	18,128	14,475
Prepaid expenses	7,700	8,333
Prepaid and accrued taxes	25,546	22,602
Derivatives, at fair value	29,367	25,103
Restricted broker margin accounts	52,212	73,723
Other	24,269	22,395
Total current assets	521,078	511,606
NONCURRENT ASSETS
Investments in equity method investees	205,800	200,268
Regulatory assets	451,115	496,637
Operating lease assets	101,657	0
Derivatives, at fair value	6,347	7,426
Intangible assets, net	11,006	14,611
Other noncurrent assets	81,086	96,493
Total noncurrent assets	857,011	815,435
Total assets	5,282,084	4,372,985
CAPITALIZATION
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding June 30, 2020 — 95,830,500; September 30, 2019 — 89,998,788	240,227	226,649
Premium on common stock	492,365	291,331
Accumulated other comprehensive loss, net of tax	(34,602)	(31,787)
Treasury stock at cost and other; shares June 30, 2020 — 260,462; September 30, 2019 —660,734	4,012	(10,436)
Retained earnings	1,136,925	1,075,960
Common stock equity	1,838,927	1,551,717
Long-term debt	1,664,517	1,537,177
Total capitalization	3,503,444	3,088,894
CURRENT LIABILITIES
Current maturities of long-term debt	25,954	21,419
Short-term debt	553,112	25,450
Gas purchases payable	81,677	137,271
Gas purchases payable to related parties	791	790
Accounts payable and other	109,987	129,724
Dividends payable	29,947	28,122
Accrued taxes	5,347	3,394
Regulatory liabilities-current	6,774	0
New Jersey Clean Energy Program	17,062	15,468
Derivatives, at fair value	47,094	57,623
Operating lease liabilities	4,458	0
Customers' credit balances and deposits	20,056	27,116
Total current liabilities	902,259	446,377
NONCURRENT LIABILITIES
Deferred income taxes	187,508	190,663
Deferred investment tax credits	3,412	3,653
Deferred gain	1,035	1,554
Derivatives, at fair value	23,600	18,821
Manufactured gas plant remediation	128,886	131,080
Postemployment employee benefit liability	196,664	246,517
Regulatory liabilities	197,281	202,435
Operating lease liabilities	96,118	0
Asset retirement obligation	33,305	31,046
Other	8,572	11,945
Total noncurrent liabilities	876,381	837,714
Commitments and contingent liabilities (Note 13)
Total capitalization and liabilities	$ 5,282,084	$ 4,372,985