XML 16 R5.htm IDEA: XBRL DOCUMENT v3.10.0.1
BALANCE SHEETS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Document Fiscal Year Focus 2018  
Property, plant and equipment    
Property, plant and equipment $ 5,870,814 $ 5,713,912
Accumulated depreciation and amortization 1,745,124 1,706,327
Net property, plant and equipment 4,125,690 4,007,585
Current assets    
Cash and cash equivalents 12,580 14,413
Accounts receivable, net 163,967 298,768
Materials and supplies 36,124 39,672
Natural gas in storage 80,482 130,154
Regulatory assets 39,402 88,180
Other current assets 18,154 17,807
Total current assets 350,709 588,994
Goodwill and other assets    
Regulatory assets 385,564 405,189
Goodwill 157,953 157,953
Other assets 48,003 47,157
Total goodwill and other assets 591,520 610,299
Total assets 5,067,919 5,206,878
Equity and long-term debt    
Common stock, $0.01 par value: authorized 250,000,000 shares; issued 52,598,005 shares and outstanding 52,516,828 shares at June 30, 2018; issued 52,598,005 and outstanding 52,312,516 at December 31, 2017 526 526
Paid-in Capital 1,723,795 1,737,551
Retained earnings 308,652 246,121
Accumulated other comprehensive income (loss) (5,370) (5,493)
Treasury stock, at cost: 81,177 shares at June 30, 2018 and 285,489 shares at December 31, 2017 (5,259) (18,496)
Total equity 2,022,344 1,960,209
Long-term debt, excluding current maturities and net issuance costs of $7,614 and $8,033, respectively 893,671 1,193,257
Total equity and long-term debt 2,916,015 3,153,466
Long-term Debt, Current Maturities 300,008 8
Current liabilities    
Notes payable 185,000 357,215
Accounts payable 70,429 143,681
Accrued interest 19,028 18,776
Accrued taxes other than income 34,931 41,324
Accrued liabilities 20,724 30,058
Customer deposits 61,249 60,811
Regulatory Liability, Current 47,867 9,438
Other current liabilities 10,102 12,019
Total current liabilities 749,338 673,330
Deferred credits and other liabilities [Abstract]    
Deferred income taxes 628,532 599,945
Regulatory Liability, Noncurrent 521,717 519,421
Employee benefit obligations 160,382 172,938
Other deferred credits 91,935 87,778
Total deferred credits and other liabilities 1,402,566 1,380,082
Commitments and contingencies
Total liabilities and equity 5,067,919 5,206,878
Over-recovered purchased-gas costs [Member]    
Current liabilities    
Regulatory Liability, Current 31,457 9,434
Deferred credits and other liabilities [Abstract]    
Regulatory Liability, Noncurrent $ 0 $ 0