COMBINED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities:
Net Income	$ 107,209	$ 27,536
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation, Depletion and Amortization	124,914	127,826
Gain on Sale of Assets	(13,024)	(4,099)
Stock/Unit Based Compensation	15,074	8,341
Deferred Income Taxes	(4,801)	6,820
Changes in Operating Assets:
Accounts and Notes Receivable	5,489	(5,254)
Inventories	(1,843)	2,444
Prepaid Expenses	(4,258)	3,852
Changes in Other Assets	4,567	(11,666)
Changes in Operating Liabilities:
Accounts Payable	8,341	1,851
Other Operating Liabilities	(23,076)	8,230
Changes in Other Liabilities	(48,136)	4,979
Other	1,195	(436)
Net Cash Provided by Operating Activities	171,651	170,424
Cash Flows from Investing Activities:
Capital Expenditures	(51,010)	(42,661)
Proceeds from Sales of Assets	17,921	5,026
Net Cash Used in Investing Activities	(33,089)	(37,635)
Cash Flows from Financing Activities:
Payments on Miscellaneous Borrowings	(2,920)	(297)
Net (Payments on) Proceeds from Revolver	(13,000)	23,000
Distributions to Noncontrolling Interest	(16,403)	(16,241)
Parent Net Investment	(114,844)	(139,481)
Tax Cost from Unit-Based Compensation	(1,009)	0
Net Cash Used in Financing Activities	(148,176)	(133,019)
Net Decrease in Cash	(9,614)	(230)
Cash at Beginning of Period	13,311	6,639
Cash at End of Period	$ 3,697	$ 6,409