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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands | Dec. 31, 2016 | Sep. 30, 2016
--- | --- | ---
PROPERTY, PLANT AND EQUIPMENT |  |
Utility plant, at cost | $ 2,123,926 | $ 2,107,375
Construction work in progress | 131,576 | 122,268
Solar and wind equipment, real estate properties and other, at cost | 747,788 | 631,696
Construction work in progress | 5,903 | 93,791
Total property, plant and equipment | 3,009,193 | 2,955,130
Accumulated depreciation and amortization, utility plant | (470,444) | (467,702)
Accumulated depreciation and amortization, solar and wind equipment, real estate properties and other | (87,000) | (79,776)
Property, plant and equipment, net | 2,451,749 | 2,407,652
CURRENT ASSETS |  |
Cash and cash equivalents | 46,875 | 37,546
Customer accounts receivable |  |
Billed | 252,755 | 142,658
Unbilled revenues | 47,648 | 5,744
Allowance for doubtful accounts | (4,916) | (4,865)
Regulatory assets | 43,140 | 54,286
Gas in storage, at average cost | 220,097 | 206,251
Materials and supplies, at average cost | 10,886 | 10,778
Prepaid and accrued taxes | 26,391 | 34,179
Derivatives, at fair value | 50,215 | 29,964
Restricted broker margin accounts | 79,118 | 47,644
Asset held for sale | 7,660 | 7,660
Other | 35,194 | 35,419
Total current assets | 815,063 | 607,264
NONCURRENT ASSETS |  |
Investments in equity method investees | 145,169 | 141,148
Regulatory assets | 408,481 | 441,294
Derivatives, at fair value | 3,660 | 5,227
Available for sale securities | 64,447 | 55,789
Other | 60,937 | 60,196
Total noncurrent assets | 682,694 | 703,654
Total assets | 3,949,506 | 3,718,570
CAPITALIZATION |  |
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding December 31, 2016 — 86,196,239; September 30, 2016 — 86,086,355 | 222,153 | 221,654
Premium on common stock | 218,476 | 215,580
Accumulated other comprehensive (loss), net of tax | (9,323) | (15,155)
Treasury stock at cost and other; shares December 31, 2016 — 2,664,765; September 30, 2016 — 2,575,139 | (84,450) | (81,044)
Retained earnings | 838,505 | 825,556
Common stock equity | 1,185,361 | 1,166,591
Long-term debt | 1,026,682 | 1,055,038
Total capitalization | 2,212,043 | 2,221,629
CURRENT LIABILITIES |  |
Current maturities of long-term debt | 96,832 | 61,452
Short-term debt | 284,600 | 121,700
Gas purchases payable | 187,219 | 139,452
Gas purchases payable to related parties | 1,155 | 1,150
Accounts payable and other | 72,776 | 107,184
Dividends payable | 21,980 | 21,975
Accrued taxes | 1,246 | 1,080
Regulatory liabilities | 12,120 | 9,469
New Jersey clean energy program | 13,180 | 14,232
Derivatives, at fair value | 93,080 | 61,080
Restricted broker margin accounts | 5,294 | 0
Customers' credit balances and deposits | 33,450 | 32,834
Total current liabilities | 822,932 | 571,608
NONCURRENT LIABILITIES |  |
Deferred income taxes | 490,017 | 473,847
Deferred investment tax credits | 4,538 | 4,619
Deferred gain | 28,317 | 28,519
Derivatives, at fair value | 4,527 | 25,252
Manufactured gas plant remediation | 168,506 | 172,000
Postemployment employee benefit liability | 140,978 | 141,604
Regulatory liabilities | 38,726 | 41,411
Asset retirement obligation | 29,664 | 28,379
Other | 9,258 | 9,702
Total noncurrent liabilities | 914,531 | 925,333
Commitments and contingent liabilities (Note 12) |  |
Total capitalization and liabilities | $ 3,949,506 | $ 3,718,570

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