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Statement of Cash Flows (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Cash flows from operating activities:    
Net income $ 42,804 $ 42,987
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 28,060 26,777
Regulatory debits 291 180
Regulatory charges resulting from tax rate changes 5,814 5,814
Amortization of deferred charges and credits (821) (346)
Allowance for equity funds used during construction (equity AFUDC) (241) (400)
Changes in current assets and liabilities:    
Trade and other accounts receivable 5,132 701
Affiliated receivables 29 (2)
Materials and supplies (87) (37)
Other current assets 3,840 6,031
Trade accounts payable (1,676) (1,521)
Affiliated payables (1,308) (17,973)
Other accrued liabilities 578 (1,222)
Changes in noncurrent assets and liabilities:    
Regulatory liabilities 1,079 721
Other, net 636 (161)
Net cash provided by operating activities 84,130 61,549
Cash flows from financing activities:    
Payments for debt issuance costs 0 (52)
Cash distributions to parent (45,000) (21,000)
Net cash used in financing activities (45,000) (21,052)
Property, plant and equipment:    
Capital expenditures (9,562) (11,370)
Contributions and advances for construction costs 4,094 (29)
Disposal of property, plant and equipment, net (240) 983
Advances to affiliates, net (33,422) (30,081)
Net cash used in investing activities (39,130) (40,497)
NET INCREASE (DECREASE) IN CASH 0 0
CASH AT BEGINNING OF PERIOD 0 0
CASH AT END OF PERIOD 0 0
Increases to property, plant and equipment, exclusive of equity AFUDC (5,520) (9,371)
Changes in related accounts payable and accrued liabilities (4,042) (1,999)
Capital expenditures $ (9,562) $ (11,370)