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CONDENSED CONSOLIDATED BALANCE SHEETS Unaudited - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Utility plant: |  |
Utility plant | $ 3,411,219 | $ 3,229,446
Less accumulated depreciation and amortization | (1,067,965) | (996,723)
Net utility plant | 2,343,254 | 2,232,723
Current assets: |  |
Cash and cash equivalents | 51,257 | 47,176
Receivables: |  |
Customers | 45,624 | 30,037
Regulatory balancing accounts | 33,437 | 42,394
Other | 16,977 | 17,101
Unbilled revenue | 42,562 | 33,427
Materials and supplies at weighted average cost | 7,804 | 6,586
Taxes, prepaid expenses, and other assets | 14,395 | 11,981
Total current assets | 212,056 | 188,702
Other assets: |  |
Regulatory assets | 382,484 | 353,569
Goodwill | 2,615 | 2,615
Other assets | 82,845 | 60,095
Total other assets | 467,944 | 416,279
TOTAL ASSETS | 3,023,254 | 2,837,704
Capitalization: |  |
Common stock, $0.01 par value; 68,000 shares authorized, 48,145 and 48,065 outstanding in 2019 and 2018, respectively | 481 | 481
Additional paid-in capital | 341,988 | 337,623
Retained earnings | 415,326 | 392,053
Total common stockholders’ equity | 757,795 | 730,157
Long-term debt, net | 807,478 | 710,027
Total capitalization | 1,565,273 | 1,440,184
Current liabilities: |  |
Current maturities of long-term debt, net | 5,280 | 104,911
Short-term borrowings | 155,100 | 65,100
Accounts payable | 108,593 | 95,580
Regulatory balancing accounts | 6,887 | 12,213
Accrued interest | 14,410 | 5,674
Accrued expenses and other liabilities | 43,674 | 37,688
Total current liabilities | 333,944 | 321,166
Unamortized investment tax credits | 1,649 | 1,649
Deferred income taxes | 229,237 | 213,033
Pension and postretirement benefits other than pensions | 203,557 | 193,538
Regulatory liabilities and other | 260,812 | 256,522
Advances for construction | 190,272 | 186,342
Contributions in aid of construction | 238,510 | 225,270
Commitments and contingencies (Note 10) |  |
TOTAL CAPITALIZATION AND LIABILITIES | $ 3,023,254 | $ 2,837,704

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- Definition Period end amount of total net PPE. + 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 Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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://fasb.org/us-gaap/role/ref/legacyRef -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 cumulative amount of the reporting entity's undistributed earnings or deficit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(a)(4)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + 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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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