Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net income (loss)	$ (28,920)	$ (3,515)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depletion, depreciation, and amortization	41,441	35,654
Exploration (dry hole and lease abandonment)	602	1,643
Accretion of ARO liability	251	201
Amortization of debt issuance costs	4,881	977
Stock compensation expense	1,330	1,972
Deferred and other non-cash compensation expense	77	136
Amortization of deferred revenue	(374)	(458)
(Gain) loss on commodity derivatives	9,022	(22,320)
(Gain) loss on sales of assets	(3,124)	64
Deferred income tax provision	(2,992)	21
Change in liability under tax receivable agreement	(3,482)	(686)
Other - net	351	59
Changes in operating assets and liabilities
Accounts receivable	(10,736)	(220)
Other assets	7,580	(4,912)
Accrued interest expense	8,630	3,348
Accounts payable and accrued liabilities	15,047	1,619
Net cash provided by operations	39,584	13,583
Cash flows from investing activities
Additions to oil and gas properties	(70,202)	(47,110)
Net adjustments to purchase price of properties acquired		2,391
Proceeds from sales of assets	7,703	144
Acquisition of other property, plant and equipment	(31)	(192)
Current period settlements of matured derivative contracts	(10,262)	27,854
Net cash (used in) investing	(72,792)	(16,913)
Cash flows from financing activities
Proceeds from issuance of long-term debt	20,000	30,000
Repayment of long-term debt	(206,000)	(53,000)
Proceeds from senior notes	438,867
Payment of debt issuance costs	(7,979)
Payment of cash dividends on preferred stock		(1,840)
Net distributions paid to JEH unitholders		(562)
Net payments for share based compensation	(66)	(31)
Proceeds from sale of common stock		2,829
Net cash provided by / (used in) financing	244,822	(22,604)
Net increase (decrease) in cash and cash equivalents	211,614	(25,934)
Cash and cash equivalents
Beginning of period	19,472	34,642
End of period	231,086	8,708
Supplemental disclosure of cash flow information
Cash paid for interest, net of capitalized interest	8,644	8,559
Change in accrued additions to oil and gas properties	(2,586)	13,294
Asset retirement obligations incurred, including changes in estimate	$ 49	$ 413