CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
PROPERTY, PLANT AND EQUIPMENT
Utility plant, at cost	$ 2,400,903	$ 2,368,914
Construction work in progress	210,543	192,481
Nonutility plant and equipment, at cost	749,700	697,406
Construction work in progress	19,391	45,690
Total property, plant and equipment	3,380,537	3,304,491
Accumulated depreciation and amortization, utility plant	(539,905)	(530,753)
Accumulated depreciation and amortization, nonutility plant and equipment	(130,560)	(122,689)
Property, plant and equipment, net	2,710,072	2,651,049
CURRENT ASSETS
Cash and cash equivalents	7,694	1,458
Customer accounts receivable
Billed	318,108	205,490
Unbilled revenues	55,155	7,199
Allowance for doubtful accounts	(5,882)	(5,704)
Regulatory assets	18,509	18,297
Gas in storage, at average cost	241,389	184,633
Materials and supplies, at average cost	15,215	13,910
Prepaid and accrued taxes	10,588	23,047
Derivatives, at fair value	55,358	27,396
Restricted broker margin accounts	85,784	53,719
Assets held for sale	207,737	206,905
Other	40,254	33,730
Total current assets	1,049,909	770,080
NONCURRENT ASSETS
Investments in equity method investees	192,188	190,866
Regulatory assets	370,024	368,592
Derivatives, at fair value	6,085	10,560
Investments in equity securities	33,174	32,917
Intangible assets, net	23,007	23,375
Other noncurrent assets	92,863	96,225
Total noncurrent assets	717,341	722,535
Total assets	4,477,322	4,143,664
CAPITALIZATION
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding December 31, 2018 — 88,680,174; September 30, 2018 — 88,292,956	226,539	226,196
Premium on common stock	278,286	274,748
Accumulated other comprehensive loss, net of tax	(15,822)	(12,610)
Treasury stock at cost and other; shares December 31, 2018 — 1,935,229; September 30, 2018 — 2,185,013	(65,060)	(76,473)
Retained earnings	1,073,107	1,007,117
Common stock equity	1,497,050	1,418,978
Long-term debt	1,184,801	1,180,619
Total capitalization	2,681,851	2,599,597
CURRENT LIABILITIES
Current maturities of long-term debt	124,806	123,545
Short-term debt	371,700	151,950
Gas purchases payable	269,966	211,303
Gas purchases payable to related parties	1,150	1,150
Accounts payable and other	75,119	135,240
Dividends payable	25,938	25,824
Accrued taxes	6,137	1,568
Regulatory liabilities	12,822	8,185
New Jersey Clean Energy Program	12,359	14,052
Derivatives, at fair value	65,114	46,652
Liabilities held for sale	4,182	4,182
Customers' credit balances and deposits	29,629	27,325
Total current liabilities	998,922	750,976
NONCURRENT LIABILITIES
Deferred income taxes	233,099	242,436
Deferred investment tax credits	3,895	3,976
Deferred gain	2,144	9,104
Derivatives, at fair value	36,825	22,982
Manufactured gas plant remediation	129,556	130,800
Postemployment employee benefit liability	141,499	137,007
Regulatory liabilities	210,580	209,139
Asset retirement obligation	29,329	28,688
Other	9,622	8,959
Total noncurrent liabilities	796,549	793,091
Commitments and contingent liabilities (Note 13)
Total capitalization and liabilities	$ 4,477,322	$ 4,143,664