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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands | Dec. 31, 2015 | Sep. 30, 2015
--- | --- | ---
PROPERTY, PLANT AND EQUIPMENT |  |
Utility plant, at cost | $ 1,937,686 | $ 1,908,024
Construction work in progress | 161,686 | 155,553
Solar and wind equipment, real estate properties and other, at cost | 569,820 | 481,003
Construction work in progress | 35,253 | 77,705
Total property, plant and equipment | 2,704,445 | 2,622,285
Accumulated depreciation and amortization, utility plant | (446,133) | (437,097)
Accumulated depreciation and amortization, solar and wind equipment, real estate properties and other | (62,213) | (56,927)
Property, plant and equipment, net | 2,196,099 | 2,128,261
CURRENT ASSETS |  |
Cash and cash equivalents | 1,683 | 4,928
Customer accounts receivable |  |
Billed | 168,729 | 155,273
Unbilled revenues | 19,883 | 6,372
Allowance for doubtful accounts | (4,706) | (5,189)
Regulatory assets | 26,739 | 24,258
Gas in storage, at average cost | 189,907 | 163,905
Materials and supplies, at average cost | 7,908 | 7,138
Prepaid and accrued taxes | 64,616 | 36,810
Derivatives, at fair value | 58,978 | 40,743
Restricted broker margin accounts | 21,334 | 12,990
Other | 33,868 | 40,987
Total current assets | 588,939 | 488,215
NONCURRENT ASSETS |  |
Investments in equity investees | 134,280 | 132,002
Regulatory assets | 423,332 | 410,155
Derivatives, at fair value | 3,741 | 4,334
Available for sale securities | 65,790 | 59,475
Other | 65,057 | 61,915
Total noncurrent assets | 692,200 | 667,881
Total assets | 3,477,238 | 3,284,357
CAPITALIZATION |  |
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding December 31, 2015 — 85,809,094; September 30, 2015 — 85,531,423 | 221,555 | 220,838
Premium on common stock | 213,351 | 209,931
Accumulated other comprehensive (loss), net of tax | (5,470) | (9,394)
Treasury stock at cost and other; shares December 31, 2015 — 2,812,896; September 30, 2015 — 2,804,847 | (91,290) | (92,164)
Retained earnings | 805,798 | 777,745
Common stock equity | 1,143,944 | 1,106,956
Long-term debt | 848,206 | 843,595
Total capitalization | 1,992,150 | 1,950,551
CURRENT LIABILITIES |  |
Current maturities of long-term debt | 10,958 | 11,138
Short-term debt | 211,000 | 66,350
Gas purchases payable | 144,349 | 151,375
Gas purchases payable to related parties | 1,150 | 1,601
Accounts payable and other | 69,563 | 99,651
Dividends payable | 20,594 | 20,528
Accrued taxes | 1,338 | 1,326
Regulatory liabilities | 1,091 | 12,154
New Jersey clean energy program | 12,907 | 14,293
Derivatives, at fair value | 51,879 | 32,791
Broker margin accounts | 19,307 | 4,103
Customers' credit balances and deposits | 30,846 | 20,790
Total current liabilities | 574,982 | 436,100
NONCURRENT LIABILITIES |  |
Deferred income taxes | 491,522 | 444,935
Deferred investment tax credits | 4,859 | 4,940
Deferred revenue | 29,130 | 29,334
Derivatives, at fair value | 2,606 | 5,529
Manufactured gas plant remediation | 180,400 | 180,400
Postemployment employee benefit liability | 108,432 | 137,414
Regulatory liabilities | 63,311 | 67,533
Asset retirement obligation | 20,960 | 19,145
Other | 8,886 | 8,476
Total noncurrent liabilities | $ 910,106 | $ 897,706
Commitments and contingent liabilities (Note 12) |  |
Total capitalization and liabilities | $ 3,477,238 | $ 3,284,357

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- Definition Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility. + References No definition available. + Details
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- Definition Period end amount of construction work in progress in public utility. + References No definition available. + Details
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- Definition Period end amount of total gross PPE. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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- Definition The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 405 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394 + Details
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- Definition Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E + Details
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- Definition The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 + Details
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