CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income	$ 5,370	$ 25,541
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, depletion, and amortization	65,103	39,004
Debt extinguishment and commitment costs	9,186	0
Non-cash interest expense	7,064	5,358
Change in value of common stock warrants	3,065	396
Deferred taxes	(69,563)	839
Stock-based compensation	4,646	4,799
Unrealized loss on derivative contracts	6,328	8,105
Equity (earnings) losses from Laramie Energy, LLC	84,841	(4,274)
Net changes in operating assets and liabilities:
Trade accounts receivable	(39,455)	(12,819)
Prepaid and other assets	13,838	1,868
Inventories	(247,318)	(8,994)
Deferred turnaround expenditures	(8,986)	0
Obligations under inventory financing agreements	212,862	(43,250)
Accounts payable, other accrued liabilities, and operating lease assets and liabilities	51,651	35,327
Net cash provided by operating activities	98,632	51,900
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(274,291)	(74,331)
Proceeds from purchase price settlement related to asset acquisition	3,226	0
Capital expenditures	(64,086)	(30,198)
Other investing activities	864	805
Net cash used in investing activities	(334,287)	(103,724)
Cash flows from financing activities:
Proceeds from borrowings	470,505	106,500
Repayments of borrowings	(207,121)	(114,926)
Net borrowings on deferred payment arrangements and receivable advances	27,783	30,682
Payment of deferred loan costs	(13,450)	(379)
Payments for debt extinguishment and commitment costs	(7,142)	0
Other financing activities, net	2,396	(653)
Net cash provided by financing activities	272,971	21,224
Net increase (decrease) in cash, cash equivalents, and restricted cash	37,316	(30,600)
Cash, cash equivalents, and restricted cash at beginning of period	75,819	119,077
Cash, cash equivalents, and restricted cash at end of period	113,135	88,477
Net cash received (paid) for:
Interest paid	(35,913)	(12,981)
Taxes	(3,974)	(48)
Non-cash investing and financing activities:
Accrued capital expenditures	7,207	4,048
Common stock issued for business combination	36,980	0
Common stock issued to repurchase convertible notes	$ 30,055	$ 0