CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
PROPERTY, PLANT AND EQUIPMENT
Utility plant, at cost	$ 2,440,125	$ 2,368,914
Construction work in progress	243,462	192,481
Nonutility plant and equipment, at cost	756,473	697,406
Construction work in progress	43,629	45,690
Total property, plant and equipment	3,483,689	3,304,491
Accumulated depreciation and amortization, utility plant	(555,541)	(530,753)
Accumulated depreciation and amortization, nonutility plant and equipment	(138,822)	(122,689)
Property, plant and equipment, net	2,789,326	2,651,049
CURRENT ASSETS
Cash and cash equivalents	83,160	1,458
Customer accounts receivable
Billed	273,924	205,490
Unbilled revenues	42,850	7,199
Allowance for doubtful accounts	(6,216)	(5,704)
Regulatory assets	17,906	18,297
Gas in storage, at average cost	58,436	184,633
Materials and supplies, at average cost	14,297	13,910
Prepaid and accrued taxes	971	23,047
Derivatives, at fair value	22,712	27,396
Restricted broker margin accounts	60,534	53,719
Assets held for sale	0	206,905
Other	36,611	33,730
Total current assets	605,185	770,080
NONCURRENT ASSETS
Investments in equity method investees	195,203	190,866
Regulatory assets	376,420	368,592
Derivatives, at fair value	13,277	10,560
Investments in equity securities	0	32,917
Intangible assets, net	15,798	23,375
Other noncurrent assets	94,764	96,225
Total noncurrent assets	695,462	722,535
Total assets	4,089,973	4,143,664
CAPITALIZATION
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding March 31, 2019 — 89,163,881; September 30, 2018 — 88,292,956	226,613	226,196
Premium on common stock	283,429	274,748
Accumulated other comprehensive loss, net of tax	(15,517)	(12,610)
Treasury stock at cost and other; shares March 31, 2019 — 1,480,919; September 30, 2018 — 2,185,013	(46,062)	(76,473)
Retained earnings	1,120,699	1,007,117
Common stock equity	1,569,162	1,418,978
Long-term debt	1,179,716	1,180,619
Total capitalization	2,748,878	2,599,597
CURRENT LIABILITIES
Current maturities of long-term debt	124,629	123,545
Short-term debt	45,900	151,950
Gas purchases payable	189,755	211,303
Gas purchases payable to related parties	1,154	1,150
Accounts payable and other	91,754	135,240
Dividends payable	25,981	25,824
Accrued taxes	28,956	1,568
Regulatory liabilities	3,717	8,185
New Jersey Clean Energy Program	5,772	14,052
Derivatives, at fair value	48,019	46,652
Liabilities held for sale	0	4,182
Customers' credit balances and deposits	18,162	27,325
Total current liabilities	583,799	750,976
NONCURRENT LIABILITIES
Deferred income taxes	208,450	242,436
Deferred investment tax credits	3,815	3,976
Deferred gain	1,947	9,104
Derivatives, at fair value	24,927	22,982
Manufactured gas plant remediation	128,897	130,800
Postemployment employee benefit liability	143,345	137,007
Regulatory liabilities	208,869	209,139
Asset retirement obligation	29,650	28,688
Other	7,396	8,959
Total noncurrent liabilities	757,296	793,091
Commitments and contingent liabilities (Note 12)
Total capitalization and liabilities	$ 4,089,973	$ 4,143,664