BALANCE SHEETS - USD ($)
$ in Thousands |
Dec. 31, 2019 |
Dec. 31, 2018 |
| Property, plant and equipment |
|
|
| Property, plant and equipment |
$ 6,433,119
|
$ 6,073,143
|
| Accumulated depreciation and amortization |
1,867,893
|
1,789,431
|
| Net property, plant and equipment |
4,565,226
|
4,283,712
|
| Current assets |
|
|
| Cash and cash equivalents |
17,853
|
21,323
|
| Accounts receivable, net |
260,012
|
295,421
|
| Materials and supplies |
55,732
|
44,333
|
| Natural gas in storage |
104,259
|
107,295
|
| Regulatory assets |
47,440
|
54,420
|
| Other current assets |
20,906
|
20,495
|
| Total current assets |
506,202
|
543,287
|
| Goodwill and other assets |
|
|
| Regulatory assets |
391,036
|
437,479
|
| Goodwill |
157,953
|
157,953
|
| Other assets |
87,883
|
46,211
|
| Total goodwill and other assets |
636,872
|
641,643
|
| Total assets |
5,708,300
|
5,468,642
|
| Equity and long-term debt |
|
|
| Common stock, $0.01 par value: authorized 250,000,000 shares; issued and outstanding 52,771,749 shares at December 31, 2019; issued 52,598,005 shares and outstanding 52,564,902 shares at December 31, 2018 |
528
|
526
|
| Paid-in capital |
1,733,092
|
1,727,492
|
| Retained earnings |
402,509
|
320,869
|
| Accumulated other comprehensive income (loss) |
(6,739)
|
(4,086)
|
| Treasury stock, at cost: 33,103 shares at December 31, 2018 |
0
|
(2,145)
|
| Total equity |
2,129,390
|
2,042,656
|
| Long-term debt, excluding current maturities, and net of issuance costs of $10,936 and $11,457, respectively |
1,286,064
|
1,285,483
|
| Total equity and long-term debt |
3,415,454
|
3,328,139
|
| Current liabilities |
|
|
| Notes payable |
516,500
|
299,500
|
| Accounts payable |
120,490
|
174,510
|
| Accrued taxes other than income |
47,956
|
47,640
|
| Customer deposits |
57,987
|
61,183
|
| Regulatory liabilities |
45,201
|
48,394
|
| Other current liabilities |
84,603
|
67,664
|
| Total current liabilities |
872,737
|
698,891
|
| Deferred credits and other liabilities [Abstract] |
|
|
| Deferred income taxes |
682,632
|
652,426
|
| Regulatory Liability, Noncurrent |
503,518
|
520,866
|
| Employee benefit obligations |
115,657
|
178,720
|
| Other deferred credits |
118,302
|
89,600
|
| Total deferred credits and other liabilities |
1,420,109
|
1,441,612
|
| Commitments and Contingencies |
|
|
| Total liabilities and equity |
$ 5,708,300
|
$ 5,468,642
|