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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Repayments of Short-term Debt $ 322,760 $ 119,063
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 44,274 54,290
CASH FLOWS FROM OPERATING ACTIVITIES    
Net earnings 3,413 9,561
Adjustments to reconcile net earnings to net cash provided by operating activities:    
Depreciation and amortization 54,353 50,344
Deferred tax expense 5,180 2,649
Amortization of Debt Issuance Costs and Discounts 938 716
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities (792) 410
Changes in working capital, net (50,146) 36,317
Change in taxes receivable, net (1,642) 11,498
Other Operating Activities, Cash Flow Statement 1,876 (1,296)
Net cash provided by operating activities 14,722 110,888
CASH FLOWS FROM INVESTING ACTIVITIES    
Additions to plant and equipment (108,419) (78,600)
Payments for (Proceeds from) Other Investing Activities 4 807
Net cash used for investing activities (108,415) (77,793)
CASH FLOWS FROM FINANCING ACTIVITIES    
Payment of tax withholdings on equity-based payment arrangements (400)  
Proceeds from (Payments for) Other Financing Activities (1,147) (543)
Net cash (used for) provided by financing activities 113,020 4,457
Proceeds from Short-term Debt 436,927 124,063
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect 19,327 37,552
Cash at beginning of period 22,484  
Cash at end of period 41,800  
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:    
Cash paid for interest, net of amounts capitalized 16,427 14,294
Cash paid for income taxes 1,918 1,517
Cash received from income tax refunds 233 13,281
Changes in accrued plan and equipment (38,429) 88,859
Non-cash additions to plant, property, and equipment 493 0
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING ACTIVITIES:    
Share-based Payment Arrangement, Noncash Expense 2,070 343
Increase (Decrease) in Accrued Taxes Payable $ (528) $ 346