CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
PROPERTY, PLANT AND EQUIPMENT
Utility plant, at cost	$ 2,167,728	$ 2,107,375
Construction work in progress	108,373	122,268
Solar and wind equipment, real estate properties and other, at cost	758,864	631,696
Construction work in progress	31,464	93,791
Total property, plant and equipment	3,066,429	2,955,130
Accumulated depreciation and amortization, utility plant	(475,075)	(467,702)
Accumulated depreciation and amortization, solar and wind equipment, real estate properties and other	(95,050)	(79,776)
Property, plant and equipment, net	2,496,304	2,407,652
CURRENT ASSETS
Cash and cash equivalents	92,735	37,546
Customer accounts receivable
Billed	242,698	142,658
Unbilled revenues	42,657	5,744
Allowance for doubtful accounts	(4,929)	(4,865)
Regulatory assets	43,344	54,286
Gas in storage, at average cost	143,514	206,251
Materials and supplies, at average cost	11,194	10,778
Prepaid and accrued taxes	15,528	34,179
Derivatives, at fair value	32,103	29,964
Restricted broker margin accounts	23,604	47,644
Asset held for sale	0	7,660
Other	35,509	35,419
Total current assets	677,957	607,264
NONCURRENT ASSETS
Investments in equity method investees	152,891	141,148
Regulatory assets	396,924	441,294
Derivatives, at fair value	6,347	5,227
Available for sale securities	65,884	55,789
Other	61,052	60,196
Total noncurrent assets	683,098	703,654
Total assets	3,857,359	3,718,570
CAPITALIZATION
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding March 31, 2017 — 86,363,986; September 30, 2016 — 86,086,355	222,235	221,654
Premium on common stock	219,074	215,580
Accumulated other comprehensive loss, net of tax	(7,597)	(15,155)
Treasury stock at cost and other; shares March 31, 2017 — 2,529,817; September 30, 2016 — 2,575,139	(78,616)	(81,044)
Retained earnings	931,184	825,556
Common stock equity	1,286,280	1,166,591
Long-term debt	1,023,968	1,055,038
Total capitalization	2,310,248	2,221,629
CURRENT LIABILITIES
Current maturities of long-term debt	60,723	61,452
Short-term debt	237,900	121,700
Gas purchases payable	160,605	139,452
Gas purchases payable to related parties	1,156	1,150
Accounts payable and other	70,981	107,184
Dividends payable	22,023	21,975
Accrued taxes	8,258	1,080
Regulatory liabilities	5,747	9,469
New Jersey clean energy program	6,239	14,232
Derivatives, at fair value	32,559	61,080
Customers' credit balances and deposits	20,069	32,834
Total current liabilities	626,260	571,608
NONCURRENT LIABILITIES
Deferred income taxes	507,111	473,847
Deferred investment tax credits	4,458	4,619
Deferred gain	28,121	28,519
Derivatives, at fair value	6,105	25,252
Manufactured gas plant remediation	165,849	172,000
Postemployment employee benefit liability	141,797	141,604
Regulatory liabilities	28,457	41,411
Asset retirement obligation	29,924	28,379
Other	9,029	9,702
Total noncurrent liabilities	920,851	925,333
Commitments and contingent liabilities (Note 12)
Total capitalization and liabilities	$ 3,857,359	$ 3,718,570