Rosehill Resources 10-Q 8 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 01, 2019
Document And Entity Information
Entity Registrant Name	Rosehill Resources Inc.
Central Index Key	0001659122
Document Type	10-Q
Document Period-End Date	Jun. 30, 2019
Amendment Flag	false
Entity Ex Transition Period	false
Current Fiscal Year-End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Emerging Growth Company	true
Small Business	true
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2019
Document Fiscal Year Focus	false
Entity Current Reporting Status	Yes
Class A Common Stock
Entity Common Stock, Shares Outstanding		14,450,980
Class B Common Stock
Entity Common Stock, Shares Outstanding		29,807,692

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 4,684	$ 20,157
Accounts receivable	26,810	32,260
Accounts receivable, related parties	0	78
Derivative assets	3,352	30,819
Prepaid and other current assets	1,936	1,371
Total current assets	36,782	84,685
Property and equipment:
Oil and natural gas properties (successful efforts), net	731,636	666,797
Other property and equipment, net	2,251	2,592
Total property and equipment, net	733,887	669,389
Other assets, net	5,591	4,678
Derivative assets	29,464	58,314
Total assets	805,724	817,066
Current liabilities:
Accounts payable	20,961	21,013
Accounts payable, related parties	63	287
Derivative liabilities	11,755	0
Accrued liabilities and other	27,570	27,335
Accrued capital expenditures	22,813	30,529
Total current liabilities	83,162	79,164
Long-term liabilities:
Long-term debt, net	334,889	288,298
Asset retirement obligations	13,709	13,524
Deferred tax liabilities	14,101	9,278
Derivative liabilities	1,627	696
Other liabilities	3,652	3,658
Total long-term liabilities	367,978	315,454
Total liabilities	451,140	394,618
Commitments and contingencies (Note 16)
Stockholders’ equity
Additional paid-in capital	35,957	42,271
Retained earnings	7,686	26,661
Total common stockholders’ equity	43,647	68,936
Noncontrolling interest	67,298	113,770
Total stockholders’ equity	195,576	267,337
Total liabilities, mezzanine and stockholders’ equity	805,724	817,066
Series B Preferred Stock
Mezzanine equity
Series B Preferred Stock; $0.0001 par value, 10.0% Redeemable, $1,000 per share liquidation preference; of the 1,000,000 shares of Preferred Stock authorized, 210,000 shares designated, 156,746 shares issued and outstanding as of June 30, 2019 and December 31, 2018	159,008	155,111
Series A Preferred Stock
Stockholders’ equity
Series A Preferred Stock; $0.0001 par value, 8.0% Cumulative Perpetual Convertible, $1,000 per share liquidation preference; of the 1,000,000 shares of Preferred Stock authorized, 150,000 shares designated, 101,669 shares issued and outstanding as of June 30, 2019 and December 31, 2018	84,631	84,631
Class A Common Stock
Stockholders’ equity
Common stock	1	1
Class B Common Stock
Stockholders’ equity
Common stock	$ 3	$ 3

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Series B Preferred Stock
Series B preferred stock, par value (USD per share)	$ 0.0001	$ 0.0001
Series B preferred stock, dividend rate (as a percent)	10.00%	10.00%
Series B preferred stock, liquidation preference (USD per share)	$ 1,000	$ 1,000
Series B preferred stock authorized (shares)	1,000,000	1,000,000
Series B preferred stock designated (shares)	210,000	210,000
Series B preferred stock issued (shares)	156,746	156,746
Series B preferred stock outstanding (shares)	156,746	156,746
Series A Preferred Stock
Series A preferred stock, par value (USD per share)	$ 0.0001	$ 0.0001
Series A preferred stock, dividend rate (as a percent)	8.00%	8.00%
Series A preferred stock, liquidation preference (USD per share)	$ 1,000	$ 1,000
Series A preferred stock authorized (shares)	1,000,000	1,000,000
Series A preferred stock designated (shares)	150,000	150,000
Series A preferred stock issued (shares)	101,669	101,669
Series A preferred stock outstanding (shares)	101,669	101,669
Class A Common Stock
Common stock, par value (USD per share)	$ 0.0001	$ 0.0001
Common stock authorized (shares)	250,000,000	250,000,000
Common stock issued (shares)	14,450,980	13,760,136
Common stock outstanding (shares)	14,450,980	13,760,136
Class B Common Stock
Common stock, par value (USD per share)	$ 0.0001	$ 0.0001
Common stock authorized (shares)	30,000,000	30,000,000
Common stock issued (shares)	29,807,692	29,807,692
Common stock outstanding (shares)	29,807,692	29,807,692

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Revenues	$ 69,383	$ 80,527	$ 141,243	$ 136,313
Operating expenses:
Lease operating expenses	8,435	11,225	18,805	20,110
Production taxes	2,992	3,841	6,495	6,481
Gathering and transportation	1,320	1,207	3,681	1,919
Depreciation, depletion, amortization and accretion	32,661	36,506	68,625	57,315
Exploration costs	1,113	1,875	2,368	2,311
General and administrative	9,344	7,930	18,399	15,027
(Gain) loss on disposition of property and equipment	(11,123)	163	(11,114)	296
Total operating expenses	44,742	62,747	107,259	103,459
Operating income	24,641	17,780	33,984	32,854
Other income (expense):
Interest expense, net	(6,010)	(4,662)	(11,610)	(8,529)
Gain (loss) on commodity derivative instruments, net	28,377	(19,954)	(76,194)	(41,239)
Other income, net	31	290	93	422
Total other income (expense), net	22,398	(24,326)	(87,711)	(49,346)
Income (loss) before income taxes	47,039	(6,546)	(53,727)	(16,492)
Income tax expense (benefit)	1,517	(15,210)	4,823	(17,400)
Net income (loss)	45,522	8,664	(58,550)	908
Net income (loss) attributable to noncontrolling interest	26,444	(8,347)	(47,465)	(22,423)
Net income (loss) attributable to Rosehill Resources Inc. before preferred stock dividends	19,078	17,011	(11,085)	23,331
Series A Preferred Stock dividends and deemed dividends	2,027	1,968	4,033	3,897
Series B Preferred Stock dividends, deemed dividends, and return	5,863	5,844	11,671	11,576
Net income (loss) attributable to Rosehill Resources Inc. common stockholders	$ 11,188	$ 9,199	$ (26,789)	$ 7,858
Earnings (loss) per common share:
Basic (USD per share)	$ 0.78	$ 1.43	$ (1.90)	$ 1.24
Diluted (USD per share)	$ 0.54	$ (0.32)	$ (1.90)	$ (0.70)
Weighted average common shares outstanding:
Basic (shares)	14,382	6,430	14,108	6,327
Diluted (shares)	24,562	36,238	14,108	36,135
Oil sales
Revenues:
Revenues	$ 66,840	$ 73,061	$ 132,693	$ 124,615
Natural gas sales
Revenues:
Revenues	(649)	2,308	825	4,053
Natural gas liquids sales
Revenues:
Revenues	$ 3,192	$ 5,158	$ 7,725	$ 7,645

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Total Common Stockholders’ Equity	Preferred Stock Series A	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Non-controlling Interest	Class A Common StockCommon Stock	Class B Common StockCommon Stock
Balance at beginning of period (shares) at Dec. 31, 2017			97,698				6,222,299	29,807,692
Balance at beginning of period at Dec. 31, 2017	$ 122,664	$ 29,950	$ 80,660	$ 29,946	$ 0	$ 12,054	$ 1	$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	908	23,331			23,331	(22,423)
Restricted stock issued (shares)							352,330
Restricted stock withheld for taxes (shares)							(32,261)
Restricted stock withheld for taxes	(261)			(261)
Stock-based compensation	3,288	3,288		3,288
Series A Preferred stock dividends (shares)			1,949
Series A Preferred stock dividends	(1,948)	(3,897)	$ 1,949		(3,897)
Series B Preferred Stock dividends, deemed dividends and return	(11,576)	(11,576)			(11,576)
Equity shift	0	(2,343)		(2,343)		2,343
Balance at end of period (shares) at Jun. 30, 2018			99,647				6,542,368	29,807,692
Balance at end of period at Jun. 30, 2018	113,075	38,492	$ 82,609	30,630	7,858	(8,026)	$ 1	$ 3
Balance at beginning of period (shares) at Mar. 31, 2018			98,662				6,222,299	29,807,692
Balance at beginning of period at Mar. 31, 2018	109,673	29,111	$ 81,624	29,107	0	(1,062)	$ 1	$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	8,664	17,011			17,011	(8,347)
Restricted stock issued (shares)							352,330
Restricted stock withheld for taxes (shares)							(32,261)
Restricted stock withheld for taxes	(261)			(261)
Stock-based compensation	1,826	1,826		1,826
Series A Preferred stock dividends (shares)			985
Series A Preferred stock dividends	(984)	(1,969)	$ 985		(1,969)
Series B Preferred Stock dividends, deemed dividends and return	(5,843)	(5,843)		1,341	(7,184)
Equity shift		(1,383)		(1,383)		1,383
Balance at end of period (shares) at Jun. 30, 2018			99,647				6,542,368	29,807,692
Balance at end of period at Jun. 30, 2018	113,075	38,492	$ 82,609	30,630	7,858	(8,026)	$ 1	$ 3
Balance at beginning of period (shares) at Dec. 31, 2018			101,669				13,760,136	29,807,692
Balance at beginning of period at Dec. 31, 2018	267,337	68,936	$ 84,631	42,271	26,661	113,770	$ 1	$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(58,550)	(11,085)			(11,085)	(47,465)
Restricted stock issued (shares)							759,574
Restricted stock withheld for taxes (shares)							(68,730)
Restricted stock withheld for taxes	(246)	(246)		(246)
Stock-based compensation	2,739	2,739		2,739
Series A Preferred stock dividends	(4,033)	(4,033)		(2,006)	(2,027)
Series B Preferred Stock dividends, deemed dividends and return	(11,671)	(11,671)		(5,808)	(5,863)
Equity shift	0	(993)		(993)		993
Balance at end of period (shares) at Jun. 30, 2019			101,669				14,450,980	29,807,692
Balance at end of period at Jun. 30, 2019	195,576	43,647	$ 84,631	35,957	7,686	67,298	$ 1	$ 3
Balance at beginning of period (shares) at Mar. 31, 2019			101,669				14,287,321	29,807,692
Balance at beginning of period at Mar. 31, 2019	156,336	31,758	$ 84,631	35,256	(3,502)	39,947	$ 1	$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	45,522	19,078			19,078	26,444
Restricted stock issued (shares)							201,335
Restricted stock withheld for taxes (shares)							(37,676)
Restricted stock withheld for taxes	(157)	(157)		(157)
Stock-based compensation	1,765	1,765		1,765
Series A Preferred stock dividends	(2,027)	(2,027)			(2,027)
Series B Preferred Stock dividends, deemed dividends and return	(5,863)	(5,863)			(5,863)
Equity shift		(907)		(907)		907
Balance at end of period (shares) at Jun. 30, 2019			101,669				14,450,980	29,807,692
Balance at end of period at Jun. 30, 2019	$ 195,576	$ 43,647	$ 84,631	$ 35,957	$ 7,686	$ 67,298	$ 1	$ 3

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ (58,550)	$ 908
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion, amortization, accretion and impairment of oil and gas properties	68,625	57,315
Deferred income taxes	4,823	(17,400)
Stock-based compensation	2,924	3,288
(Gain) loss on disposition of property and equipment	(11,114)	296
Loss on derivative instruments	76,170	41,082
Net cash paid in settlement of derivative instruments	(7,167)	(12,194)
Amortization of debt issuance costs	906	1,319
Settlement of asset retirement obligations	(8)	(283)
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable and accounts receivable, related parties	5,533	(11,976)
Increase in prepaid and other assets	(565)	(369)
Increase (decrease) in accounts payable and accrued liabilities and other	(4,600)	12,056
Increase (decrease) in accounts payable, related parties	(224)	553
Net cash provided by operating activities	76,753	74,595
Cash flows from investing activities:
Additions to oil and natural gas properties	(148,861)	(204,275)
Acquisition of White Wolf	0	(4,005)
Acquisition of land and leasehold, royalty and mineral interest	(1,133)	(14,725)
Proceeds received - Tatanka Asset sale	22,000	0
Additions to other property and equipment	(88)	(1,634)
Net cash used in investing activities	(128,082)	(224,639)
Cash flows from financing activities:
Proceeds from revolving credit facility	66,000	213,000
Repayment on revolving credit facility	(20,000)	(68,000)
Debt issuance costs	(658)	(2,380)
Dividends paid on preferred stock	(9,232)	(4,129)
Restricted stock used for tax withholdings	(247)	(261)
Payment on capital lease obligation	(7)	(13)
Net cash provided by financing activities	35,856	138,217
Net decrease in cash, cash equivalents, and restricted cash	(15,473)	(11,827)
Cash and cash equivalents beginning of period	20,157	24,682
Cash and cash equivalents end of period	4,684	12,855
Supplemental disclosures:
Cash paid for interest	8,954	3,748
Supplemental noncash activity:
Asset retirement obligations incurred	(7)	2,793
Changes in accrued capital expenditures	(7,716)	(16,971)
Changes in accounts payable for capital expenditures	1,211	3,161
Series A Preferred Stock
Supplemental noncash activity:
Series A Preferred Stock paid-in-kind	0	1,949
Preferred Stock cash dividends declared and payable	2,027	984
Series B Preferred Stock
Supplemental noncash activity:
Preferred Stock cash dividends declared and payable	3,908	2,275
Series B Preferred Stock dividends paid-in-kind	0	3,004
Series B Preferred Stock return	3,156	3,438
Series B Preferred Stock deemed dividend	$ 741	$ 631

Organization and Basis of Prese

Organization and Basis of Presentation	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation Organization Rosehill Resources Inc. (the “Company” or “Rosehill”) is an independent oil and natural gas company focused on the acquisition, exploration, development and production of unconventional oil and associated liquids-rich natural gas reserves in the Permian Basin. The Company’s assets are concentrated in the Delaware Basin, a sub-basin of the Permian Basin. The Company was incorporated in Delaware on September 21, 2015 as a special purpose acquisition company under the name of KLR Energy Acquisition Corp. (“KLRE”) for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination involving the Company and one or more businesses. On April 27, 2017, the Company acquired a portion of the equity of Rosehill Operating Company, LLC (“Rosehill Operating”), in a transaction structured as a reverse recapitalization (the “Transaction”), into which Tema Oil & Gas Company (“Tema”), a wholly owned subsidiary of Rosemore, Inc. (“Rosemore”), contributed certain assets and liabilities. At the closing of the Transaction, the Company became the sole managing member of Rosehill Operating. Following the Transaction, the Company changed its name to Rosehill Resources Inc. As the sole managing member of Rosehill Operating, the Company, through its officers and directors, is responsible for all operational and administrative decision-making and control of all of the day-to-day business affairs of Rosehill Operating without the approval of any other member, unless specified in the Second Amended and Restated Limited Liability Company Agreement of Rosehill Operating (the “LLC Agreement”). Basis of Presentation The condensed consolidated financial results of the Company consist of the financial results of Rosehill and Rosehill Operating, its consolidated subsidiary. As of June 30, 2019 , the Company owns approximately 32.7% of the common units of Rosehill Operating (the “Rosehill Operating Common Units”) and Tema owns approximately 67.3% of the Rosehill Operating Common Units. The unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. It is suggested that these condensed financial statements be read in conjunction with the financial statements and the notes thereto included in the Company’s latest Annual Report on Form 10-K. The unaudited condensed consolidated financial statements reflect all normal and recurring adjustments that are, in the opinion of management, necessary for the fair presentation of the results of operations for the interim periods. Variable Interest Entities Rosehill Operating is a variable interest entity. The Company determined that it is the primary beneficiary of Rosehill Operating as the Company is the sole managing member and has the power to direct the activities most significant to Rosehill Operating’s economic performance as well as the obligation to absorb losses and receive benefits that are potentially significant. The Company consolidated 100% of Rosehill Operating’s assets and liabilities and results of operations in the Company’s condensed consolidated financial statements. Although Tema had a larger ownership interest in Rosehill Operating, because it has disproportionately fewer voting rights, Tema is shown as a noncontrolling interest holder of Rosehill Operating. For further discussion, see Noncontrolling Interest in Note 13 - Stockholders’ Equity .

Summary of Significant Accounti

Summary of Significant Accounting Policies and Recently Issued Accounting Standards	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Recently Issued Accounting Standards	Summary of Significant Accounting Policies and Recently Issued Accounting Standards The significant accounting policies followed by the Company are set forth in Note 2 – Summary of Significant Accounting Policies included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. Accounting Standards Adopted in 2019 Revenue Recognition. ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASC 606”), supersedes the revenue recognition requirements in Topic 605, Revenue Recognition , and industry-specific guidance in Subtopic 932-605, Extractive Activities-Oil and Gas-Revenue Recognition and requires an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration the entity expects to be entitled to in exchange for those goods or services. In May 2016, the FASB issued ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , as clarifying guidance to improve the operability and understandability of the implementation guidance on principal versus agent considerations. ASC 606 became effective for the Company on January 1, 2019, and the Company has elected to adopt it using the modified retrospective method. The Company has completed its review of the impact of ASC 606 on its significant contracts and determined that the Company was not required to record a cumulative effect adjustment to retained earnings. The implementation of ASC 606 did result in changes to the presentation of “Revenues” and “Gathering and transportation” on the Company’s Condensed Consolidated Statement of Operations, but there was no impact to net income. See Note 17 - Revenue from Contracts with Customers . Financial Assets and Financial Liabilities. In January 2016, the FASB issued ASU 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities . The pronouncement requires, among other things, public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset. For the Company, these changes became effective on January 1, 2019. In February 2018, the FASB issued ASU 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , which clarifies certain aspects of the guidance issued in ASU 2016-01 including: the ability to irrevocably elect to change the measurement approach for equity securities measured using the practical expedient (at cost plus or minus observable transactions less impairment) to a fair value method in accordance with Topic 820, Fair Value Measurement; clarification that if an observable transaction occurs for such securities, the adjustment is as of the observable transaction date; clarification that the prospective transition approach for equity securities without a readily determinable fair value is meant only for instances in which the practical expedient is elected; and various other clarifications. The adoption of ASU 2016-01 and ASU 2018-03 has been evaluated by the Company and the adoption does not have a significant impact on the Company’s condensed consolidated financial statements. Recently Issued Accounting Standards Not Yet Adopted Leases. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under current U.S. GAAP. In January 2018, the FASB issued ASU 2018-01, Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842 , which provides clarifying guidance regarding land easements and adds practical expedients. In July 2018, further amendments were issued under ASU 2018-10, Codification Improvements to Topic 842, Leases . In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements , which provides entities with an additional transition method in which an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. ASU 2016-02 and its related updates are effective for the Company for fiscal years beginning after December 15, 2019. The Company is currently evaluating the method of adoption and the impact of the adoption of this guidance on its condensed consolidated financial statements and disclosures. Financial Instruments – Credit Losses. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments requiring the measurement of all expected credit losses for financial assets, which include trade receivables, held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. The guidance in this ASU is effective for the Company for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021 with early adoption permitted for interim and annual periods beginning after December 15, 2018. The evaluation of this standard and its impact on the Company’s condensed consolidated financial statements and related disclosures is currently being assessed. Derivatives and Hedging. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities , which expands and refines hedge accounting for both financial and non-financial risk components, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. ASU 2017-12 is effective for the Company for fiscal years beginning after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of this guidance on its condensed consolidated financial statements. Fair Value Measurement Disclosures. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which removes, modifies and adds disclosure requirements on fair value measurements. ASU 2018-13 is effective for the Company for fiscal years beginning after December 15, 2019 and the Company is permitted to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. The Company is currently evaluating the impact of the adoption of this guidance on its disclosures.

Earning (Loss) Per Share

Earning (Loss) Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Earning (Loss) Per Share	Earnings (Loss) Per Share The following table sets forth the calculation of basic and diluted weighted average shares outstanding and earnings (loss) per share for the indicated periods: Three Months Six Months Ended June 30, Ended June 30, 2019 2018 2019 2018 (In thousands, except per share data) Net income (loss) (numerator): Net income (loss) attributable to common stockholders of Rosehill Resources Inc. - basic $ 11,188 $ 9,199 $ (26,789 ) $ 7,858 Add: Dividends on Series A Preferred Stock 2,027 — — — Add: Net loss attributable to the noncontrolling interest, net of taxes — (20,898 ) — (33,122 ) Net income (loss) attributable to common stockholders of Rosehill Resources Inc. - diluted $ 13,215 $ (11,699 ) $ (26,789 ) $ (25,264 ) Weighted average shares (denominator): Weighted average shares – basic 14,382 6,430 14,108 6,327 Add: Dilutive effects of equity awards 1,339 — — — Add: Dilutive effects of Series A Preferred Stock 8,841 — — — Add: Dilutive effects of Class B Common Stock — 29,808 — 29,808 Weighted average shares – diluted 24,562 36,238 14,108 36,135 Basic earnings (loss) per share $ 0.78 $ 1.43 $ (1.90 ) $ 1.24 Diluted earnings (loss) per share $ 0.54 $ (0.32 ) $ (1.90 ) $ (0.70 ) For the three months ended June 30, 2019 , the Company excluded 29.8 million shares of Class A Common Stock issuable upon exchange of the Company’s Class B Common Stock, 25.6 million shares of Class A Common Stock issuable upon exercise of the Company’s warrants and 1.4 million shares of Class A Common Stock issuable upon vesting of awards under the Company’s Long-Term Incentive Plan (as amended and restated on May 22, 2018, the “LTIP”) from the computation of diluted earnings per share because the effect of such events was anti-dilutive. For the six months ended June 30, 2019 , the Company excluded 29.8 million shares of Class A Common Stock issuable upon exchange of the Company’s Class B Common Stock, 25.6 million shares of Class A Common Stock issuable upon exercise of the Company’s warrants, 8.8 million shares of Class A Common Stock issuable upon conversion of the Company’s 8% Series A Cumulative Perpetual Convertible Preferred Stock (the “Series A Preferred Stock”) and 2.4 million shares of Class A Common Stock issuable upon vesting of awards under the LTIP from the computation of diluted earnings per share because the effect of such events was anti-dilutive. For the three months ended June 30, 2018 , the Company excluded 25.6 million shares of Class A Common Stock issuable upon exercise of the Company’s warrants, 8.6 million shares of Class A Common Stock issuable upon conversion of the Company’s Series A Preferred Stock and 0.2 million shares of Class A Common Stock issuable upon vesting under the Company’s LTIP from the computation of diluted earnings per share because the effect of such events was anti-dilutive. For the six months ended June 30, 2018 , the Company excluded 25.6 million shares of Class A Common Stock issuable upon exercise of the Company’s warrants, 8.5 million shares of Class A Common Stock issuable upon conversion of the Company’s Series A Preferred Stock and 0.1 million shares of Class A Common Stock issuable upon vesting under the Company’s LTIP from the computation of diluted earnings per share because the effect of such events was anti-dilutive.

Accounts Receivable

Accounts Receivable	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Accounts Receivable	Accounts Receivable Accounts receivable is comprised of the following: June 30, 2019 December 31, 2018 (In thousands) Revenue receivable $ 25,342 $ 28,876 Realized derivative receivable 741 2,229 Joint interest billings 80 640 Other 647 515 Accounts receivable $ 26,810 $ 32,260

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments Commodity derivatives. The Company enters into various derivative instruments primarily to mitigate a portion of the exposure to potentially adverse market changes in oil and natural gas commodity prices and the associated impact on cash flows. All contracts are entered into for other-than-trading purposes. Oil and natural gas commodity derivative instruments are recorded on the condensed consolidated balance sheets at fair value as either an asset or a liability with changes in fair value recognized currently in earnings. While commodity derivative instruments are utilized to manage the price risk attributable to expected oil and natural gas production, the Company’s commodity derivative instruments are not designated as accounting hedges under the accounting guidance. The related cash flow impact of the commodity derivative activities is reflected as cash flows from operating activities unless they are determined to have a significant financing element at inception, in which case they are classified within financing activities. Series B Preferred Stock bifurcated derivative - In the event of a change of control, the Company shall redeem in cash all of the outstanding shares of Series B Preferred Stock, excluding Series B PIK Shares, each as defined in Note 11 - 10% Series B Redeemable Preferred Stock , for a price per share equal to the Base Return Amount as defined in Note 11 - 10% Series B Redeemable Preferred Stock . The Company assessed the change of control feature and determined that the redemption of the outstanding shares of Series B Preferred Stock, excluding Series B PIK Shares, for a price per share equal to the Base Return Amount was a bifurcated derivative. See Note 11 - 10% Series B Redeemable Preferred Stock for defined terms and more detail. The following tables summarize the location and fair value amounts of all the Company’s derivative instruments in the Condensed Consolidated Balance Sheets, as well as the gross recognized derivative assets, liabilities and offset amounts in the Condensed Consolidated Balance Sheets: June 30, 2019 Gross Fair Value Gross Amounts Offset (1) Net Recognized Fair Value (In thousands) Assets Commodity derivatives - current $ 26,289 $ (22,937 ) $ 3,352 Commodity derivatives - non-current 98,379 (68,915 ) 29,464 Total assets $ 124,668 $ (91,852 ) $ 32,816 Liabilities Commodity derivatives - current $ (34,692 ) $ 22,937 $ (11,755 ) Commodity derivatives - non-current (69,869 ) 68,915 (954 ) Series B Preferred Stock bifurcated derivative - non-current (673 ) — (673 ) Total liabilities $ (105,234 ) $ 91,852 $ (13,382 ) (1) The Company has agreements in place with all of its counterparties that allow for the financial right of offset for derivative assets and liabilities. December 31, 2018 Gross Fair Value Gross Amounts Offset (1) Net Recognized Fair Value (In thousands) Assets Commodity derivatives - current $ 46,972 $ (16,153 ) $ 30,819 Commodity derivatives - non-current 88,008 (29,694 ) 58,314 Total assets $ 134,980 $ (45,847 ) $ 89,133 Liabilities Commodity derivatives - current $ (16,153 ) $ 16,153 $ — Commodity derivatives - non-current (29,694 ) 29,694 — Series B Preferred Stock bifurcated derivative - non-current (696 ) — (696 ) Total liabilities $ (46,543 ) $ 45,847 $ (696 ) (1) The Company has agreements in place with all of its counterparties that allow for the financial right of offset for derivative assets and liabilities. As of June 30, 2019 , the open commodity derivative positions with respect to future production were as follows: 2019 2020 2021 2022 Commodity derivative swaps Oil: Notional volume (Bbls) (1)(2) 1,332,000 1,960,000 — — Weighted average fixed price ($/Bbl) $ 53.59 $ 60.09 $ — $ — Natural gas: Notional volume (MMBtu) 1,682,646 1,970,368 1,615,792 1,276,142 Weighted average fixed price ($/MMbtu) $ 2.87 $ 2.75 $ 2.79 $ 2.85 Ethane: Notional volume (Gallons) 7,027,524 — — — Weighted average fixed price ($/Gallons) $ 0.28 $ — $ — $ — Propane: Notional volume (Gallons) 4,685,058 — — — Weighted average fixed price ($/Gallons) $ 0.79 $ — $ — $ — Pentanes: Notional volume (Gallons) 1,561,896 — — — Weighted average fixed price ($/Gallons) $ 1.47 $ — $ — $ — Commodity derivative two-way collars Oil: Notional volume (Bbls) 210,000 — — — Weighted average ceiling price ($/Bbl) $ 60.03 $ — $ — $ — Weighted average floor price ($/Bbl) $ 53.14 $ — $ — $ — Commodity derivative three-way collars Oil: Notional volume (Bbls) 1,095,258 3,294,000 4,200,000 2,000,000 Weighted average ceiling price ($/Bbl) $ 65.86 $ 70.29 $ 60.40 $ 61.45 Weighted average floor price ($/Bbl) $ 60.61 $ 57.50 $ 54.49 $ 55.00 Weighted average sold put option price ($/Bbl) $ 45.57 $ 47.50 $ 45.51 $ 45.00 Crude oil basis swaps Midland / Cushing: Notional volume (Bbls) 2,637,258 5,254,000 3,160,000 2,100,000 Weighted average fixed price ($/Bbl) $ (4.65 ) $ (0.83 ) $ 0.48 $ 0.54 Natural gas basis swaps EP Permian: Notional volume (MMBtu) 1,711,062 2,096,160 — — Weighted average fixed price ($/MMBtu) $ (1.13 ) $ (1.03 ) $ — $ — (1) During the second quarter of 2019, the Company entered into commodity derivative swaps where it bought 2,160,000 barrels of crude oil at a weighted average fixed price of $50.48 per barrel to offset commodity derivative swaps it previously sold of 2,160,000 barrels of crude oil at a weighted average fixed price of $61.21 per barrel. (2) During the second quarter of 2019, the Company entered into commodity derivative swaps where it bought 1,100,000 barrels of crude oil at a weighted average fixed price of $50.55 per barrel to offset commodity derivative swaps it previously sold of 1,100,000 barrels of crude oil at a weighted average fixed price of $58.42 per barrel. For the three and six months ended June 30, 2019 and 2018 , the effect of the derivative activity on the Company’s Condensed Consolidated Statements of Operations was as follows: Three Months Six Months Ended June 30, Ended June 30, 2019 2018 2019 2018 (In thousands) Realized gain (loss) on derivatives Commodity derivative options $ (165 ) $ — $ 1,335 $ 19 Commodity derivative swaps (5,181 ) (9,151 ) (7,704 ) (12,213 ) Total realized gain (loss) on derivatives $ (5,346 ) $ (9,151 ) $ (6,369 ) $ (12,194 ) Unrealized gain (loss) on derivatives Commodity derivative options $ 3,217 $ 1,795 $ (22,349 ) $ (14,165 ) Commodity derivative swaps 30,506 (12,598 ) (47,476 ) (14,880 ) Total 33,723 (10,803 ) (69,825 ) (29,045 ) Series B Preferred Stock bifurcated derivative (58 ) 57 23 157 Total unrealized gain (loss) on derivatives $ 33,665 $ (10,746 ) $ (69,802 ) $ (28,888 ) The gains and losses resulting from the cash settlement and mark-to-market of the commodity derivatives are included within “Gain (loss) on commodity derivative instruments, net” in the Condensed Consolidated Statements of Operations. The gains and losses resulting from mark-to-market of the Series B Preferred Stock bifurcated derivative are included within “Other income (expense), net” in the Condensed Consolidated Statements of Operations.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). Fair value measurements are classified and disclosed within the following fair value hierarchy: Level 1 – Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Active markets are those in which transactions for the assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis. Level 2 – Quoted prices in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability. This category includes those derivative instruments that are valued using observable market data. Level 3 – Measured based on prices or valuation models that require inputs that are both significant to the fair value measurement and less observable from objective sources. Pricing inputs are unobservable for the investment and include situations where there is little, if any, market activity for the investment. Observable data is considered to be market data if it is readily available, regularly distributed or updated, reliable and verifiable, not proprietary, and provided by multiple, independent sources that are actively involved in the relevant market. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on lowest level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the investment. However, the determination of what constitutes “observable” requires significant judgment. The categorization of an investment within the hierarchy is based upon the pricing transparency of the investment and does not necessarily correspond to the perceived risk of that investment. Financial Instruments The financial instruments measured at fair value on a recurring basis consist of the following: June 30, December 31, 2019 2018 (In thousands) Derivative assets Derivative assets - current $ 3,352 $ 30,819 Derivative assets - non-current 29,464 58,314 Total derivative assets 32,816 89,133 Derivative liabilities Derivative liabilities - current (11,755 ) — Derivative liabilities - non-current (1,627 ) (696 ) Total derivative liabilities (13,382 ) (696 ) Total derivative assets (liabilities), net $ 19,434 $ 88,437 Derivative assets and liabilities primarily represent unsettled amounts related to commodity derivative positions, including swaps and options. Derivative liabilities also include the Series B Preferred Stock bifurcated derivative for the various redemption amounts that the Company could incur if a change of control event occurs. The Company utilizes Level 3 assumptions to estimate the probability of a change of control occurring and when that would occur as the timing impacts the Base Return Amount as defined in Note 11 - 10% Series B Redeemable Preferred Stock . The tables below, set forth by level within the fair value hierarchy, represent the net components of the assets and liabilities that were measured at fair value on a recurring basis as of June 30, 2019 and December 31, 2018 . These net balances are intended solely to provide information on sources of inputs to fair value and proportions of fair value involving objective versus subjective valuations and do not represent either the actual credit exposure or net economic exposure. June 30, 2019 Level 1 Level 2 Level 3 Total (In thousands) Derivative assets Commodity derivative assets - current $ — $ 3,352 $ — $ 3,352 Commodity derivative assets - non-current — 29,464 — 29,464 Total derivative assets $ — $ 32,816 $ — $ 32,816 Derivative liabilities Commodity derivative liabilities - current $ — $ (11,755 ) $ — $ (11,755 ) Commodity derivative liabilities - non-current — (954 ) — (954 ) Series B Preferred Stock bifurcated derivative - non-current — — (673 ) (673 ) Total derivative liabilities $ — $ (12,709 ) $ (673 ) $ (13,382 ) December 31, 2018 Level 1 Level 2 Level 3 Total (In thousands) Derivative assets Commodity derivative assets - current $ — $ 30,819 $ — $ 30,819 Commodity derivative assets - non-current — 58,314 — 58,314 Total derivative assets $ — $ 89,133 $ — $ 89,133 Derivative liabilities Series B Preferred Stock bifurcated derivative - non-current $ — $ — $ (696 ) $ (696 ) Total derivative liabilities $ — $ — $ (696 ) $ (696 ) The table below sets forth a summary of changes in the fair value of the Company’s level 3 liabilities for the six months ended June 30, 2019 . Beginning balance $ 696 (Gains) losses reported in earnings (23 ) Ending balance $ 673 Financing Arrangements The carrying amounts of the Company’s cash, cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their fair values because of the short-term maturities and/or liquid nature of these assets and liabilities. The Company’s revolving credit facility carrying value is representative of its fair value because the interest rate changes monthly based on the current market of the stated rates in the agreement. As of June 30, 2019 and December 31, 2018, the fair value of the 10% Senior Secured Second Lien Notes (the “Second Lien Notes”) was approximately $95.2 million , which was determined using quoted prices for similar instruments, a Level 2 classification in the fair value hierarchy. Non-Financial Assets and Liabilities Non-financial assets and liabilities that are initially measured at fair value are comprised of asset retirement obligations and the corresponding increase to the related long-lived asset and are not remeasured at fair value in subsequent periods. Such initial measurements are classified as Level 3 because certain significant unobservable inputs are utilized in their determination. The fair value of additions to asset retirement obligation liability and certain changes in the estimated fair value of the liability are measured using valuation techniques consistent with the income approach, converting future cash flows to a single discounted amount. Significant inputs to the valuation include (i) estimated plug and abandonment cost per well based on historical experience and information from third-parties; (ii) estimated remaining life per well; (iii) future inflation factors; and (iv) average credit-adjusted risk-free rate. These inputs require significant judgments and estimates by management at the time of the valuation and are the most sensitive and subject to change. If the carrying amount of oil and natural gas properties exceeds the estimated undiscounted future cash flows, the carrying amount of the oil and natural gas properties will be adjusted to their fair value. The fair value of oil and natural gas properties is determined using valuation techniques consistent with the income and market approach. The factors used to determine fair value are subject to management’s judgment and expertise and include, but are not limited to, (i) recent sales prices of comparable properties; (ii) the present value of future cash flows, net of estimated operating and development costs using estimates of proved oil and natural gas reserves; (iii) future commodity prices; (iv) future production estimates; (v) anticipated capital expenditures; and (vi) various discount rates commensurate with the risk and current market conditions associated with the projected cash flows. These assumptions represent “Level 3” inputs.

Property and equipment

Property and equipment	6 Months Ended
	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Property and equipment	Property and equipment Property and equipment is comprised of the following: June 30, December 31, 2019 2018 (In thousands) Proved oil and natural gas properties $ 910,705 $ 777,558 Unproved oil and natural gas properties 119,225 121,929 Land 1,575 1,575 Less: accumulated DD&A and impairment (299,869 ) (234,265 ) Total oil and natural gas properties (successful efforts), net 731,636 666,797 Other property and equipment 6,094 6,059 Less: accumulated DD&A (3,843 ) (3,467 ) Total other property and equipment 2,251 2,592 Total property and equipment, net $ 733,887 $ 669,389 Depreciation, depletion and amortization (“DD&A”) related to oil and natural gas properties was $32.3 million and $36.2 million for the three months ended June 30, 2019 and 2018 , respectively, and $67.8 million and $56.7 million for the six months ended June 30, 2019 and 2018 , respectively. Depreciation and amortization expense related to other property and equipment was $0.2 million and $0.2 million for the three months ended June 30, 2019 and 2018 , respectively, and $0.4 million and $0.3 million for the six months ended June 30, 2019 and 2018 , respectively. There were no impairment charges related to proved or unproved oil and natural gas properties recorded for the three and six months ended June 30, 2019 and 2018. Capitalized costs included in proved oil and natural gas properties not subject to DD&A totaled $60.5 million at June 30, 2019 and $87.1 million at December 31, 2018. Acquisitions and Divestitures Pecos County, Texas Exchange and Farm-in Agreement. On February 27, 2019, Rosehill closed a cashless acreage exchange in the Southern Delaware Basin receiving approximately 384 net undeveloped acres contiguous to its core areas in the Southern Delaware Basin in exchange for approximately 389 net undeveloped acres not contiguous to its core areas in the Southern Delaware Basin. No gain or loss was recognized on the exchange. In addition, Rosehill gained approximately 2,000 net acres contiguous to its core areas in the Southern Delaware Basin subject to its obligation to drill and complete up to seven wells through 2020 and carrying 25% of the drilling and completion costs for each of the seven wells and the costs of facilities and equipment. Divestiture of Lea County, New Mexico Assets. On March 26, 2019, Rosehill signed a Purchase and Sale Agreement to sell all of its rights, title and interests to all leases, wells, facilities, easements and contracts located in Lea County, New Mexico for cash consideration of $22.0 million , along with the assumption, by the purchaser, of all abandonment obligations associated with the properties. On April 4, 2019, Rosehill closed the transaction (the “Closing Date”) with an effective date of October 1, 2018. The purchase price is subject to customary closing adjustments due within 120 days of the Closing Date. The Company recorded a gain of approximately $11.1 million upon closing of the divestiture.

Asset Retirement Obligations

Asset Retirement Obligations	6 Months Ended
	Jun. 30, 2019
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	Asset Retirement Obligations The change in asset retirement obligations for the six months ended June 30, 2019 is set forth below (in thousands): Asset retirement obligations, beginning of period $ 13,524 Additional liabilities incurred 88 Dispositions (186 ) Accretion expense 385 Liabilities settled upon plugging and abandoning wells (8 ) Revision of estimates (94 ) Asset retirement obligations, end of period $ 13,709

Accrued Liabilities and Other

Accrued Liabilities and Other	6 Months Ended
	Jun. 30, 2019
Payables and Accruals [Abstract]
Accrued Liabilities and Other	Accrued Liabilities and Other Accrued liabilities and other is comprised of the following as of the respective dates: June 30, December 31, 2019 2018 (In thousands) Accrued payroll $ 2,301 $ 3,764 Royalties payable 8,175 11,511 Accrued lease operating expense 4,849 3,992 Preferred Stock dividends payable 5,936 3,362 Accrued interest expense 2,661 925 Accrued production taxes — 1,234 Accrued ad valorem taxes 1,743 1,066 Other 1,905 1,481 Total accrued liabilities and other $ 27,570 $ 27,335

Long-term debt, net

Long-term debt, net	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Long-term debt, net	Long-term debt, net The Company’s long-term debt is comprised of the following: June 30, December 31, 2019 2018 (In thousands) Second Lien Notes $ 100,000 $ 100,000 Revolving credit facility 240,000 194,000 Total debt 340,000 294,000 Debt issuance cost on Second Lien Notes, net 2,878 3,211 Discount on Second Lien Notes, net 2,233 2,491 Total debt issuance cost and discounts 5,111 5,702 Total long-term debt, net $ 334,889 $ 288,298 Revolving Credit Facility On March 28, 2018, Rosehill Operating entered into an Amended and Restated Credit Agreement (the “Amended and Restated Credit Agreement”) by and among Rosehill Operating, as borrower, JPMorgan Chase Bank, N.A., as administrative agent, and certain other financial institutions party thereto, as lenders. The borrowings under the Amended and Restated Credit Agreement bear interest at an adjusted base rate plus an applicable margin ranging from 1% to 2% or at an adjusted LIBO Rate plus an applicable margin ranging from 2% to 3% . As of June 30, 2019 , the weighted average interest rate of outstanding borrowings under the Amended and Restated Credit Agreement was 5.2% . Pursuant to the Amended and Restated Credit Agreement, the lenders party thereto have agreed to provide the Company with a $500 million secured reserve-based revolving credit facility. The maturity date of the Amended and Restated Credit Agreement is August 31, 2022 and automatically extends to March 2023 upon the payment in full of the Second Lien Notes. The borrowing base is re-determined semi-annually, with the lenders and the Company each having the right to one interim unscheduled redetermination between any two consecutive semi-annual redeterminations. As of June 30, 2019 , the borrowing base was $300 million and the Company had $240.0 million outstanding under the Amended and Restated Credit Agreement. The amounts outstanding under the Amended and Restated Credit Agreement are secured by first priority liens on substantially all of Rosehill Operating’s property and all of the stock of Rosehill Operating’s material operating subsidiaries that are guarantors of the Amended and Restated Credit Agreement. If an event of default occurs under the Amended and Restated Credit Agreement, JPMorgan Chase Bank, N.A. will have the right to proceed against the pledged capital stock and take control of substantially all of the assets of Rosehill Operating and Rosehill Operating’s material operating subsidiaries that are guarantors’. There are currently no guarantors under the Amended and Restated Credit Agreement. The Company is subject to certain limited restrictions under the Amended and Restated Credit Agreement, including (without limitation) a negative pledge with respect to its equity interests in Rosehill Operating and a contingent obligation to guarantee the borrowings upon request by the lenders in the event that the Company incurs debt obligations. The Amended and Restated Credit Agreement contains various affirmative and negative covenants. These covenants may limit Rosehill Operating’s ability to, among other things: incur additional indebtedness; make loans to others; make investments; enter into mergers; make or declare dividends or distributions; enter into commodity hedges exceeding a specified percentage of Rosehill Operating’s expected production; enter into interest rate hedges exceeding a specified percentage of Rosehill Operating’s outstanding indebtedness; incur liens; sell assets; and engage in certain other transactions without the prior consent of JPMorgan Chase Bank, N.A. and/or the lenders. The Amended and Restated Credit Agreement also requires Rosehill Operating to maintain the following financial ratios: (1) a current ratio, which is the ratio of consolidated current assets (including unused commitments under the Amended and Restated Credit Agreement, but excluding non-cash assets) to consolidated current liabilities (excluding non-cash obligations, current maturities under the Amended and Restated Credit Agreement and the Note Purchase Agreement (as defined below)), of not less than 1.0 to 1.0 ; (2) (x) a leverage ratio, which is the ratio of the sum of all of Rosehill Operating’s Total Debt to Annualized EBITDAX (as such terms are defined in the Amended and Restated Credit Agreement) for the four fiscal quarters then ended, of not greater than 4.0 to 1.0 and (y) commencing on and after repayment in full of the Second Lien Notes (other than surviving contingent indemnification obligations) and the repayment or redemption in full of the Series B Preferred Stock, a leverage ratio, which is the ratio of the sum of all of Rosehill Operating’s Net Debt to Annualized EBITDAX (as such terms are defined in the Amended and Restated Credit Agreement), of not greater than 4.0 to 1.0 and (3) for so long as the Series B Preferred Stock remains outstanding, a coverage ratio, which is the ratio of (i) EBITDAX (as defined in the Amended and Restated Credit Agreement) to (ii) the sum of (x) Interest Expense (as defined in the Amended and Restated Credit Agreement) plus (y) the aggregate amount of Restricted Payments (as defined in the Amended and Restated Credit Agreement) made in cash pursuant to Sections 9.04(a)(iv) and (v) of the Amended and Restated Credit Agreement during the preceding four fiscal quarters, of not less than 2.5 to 1.0 . The Company was in compliance with the financial covenants in the Amended and Restated Credit Agreement for the measurement period ended June 30, 2019 . Second Lien Notes On December 8, 2017, Rosehill Operating issued and sold $100,000,000 in aggregate principal amount of 10.00% Senior Secured Second Lien Notes due January 31, 2023 to EIG Global Energy Partners, LLC (“EIG”) under and pursuant to the terms of that certain Note Purchase Agreement, dated as of December 8, 2017 (as amended by the Limited Consent and First Amendment to Note Purchase Agreement, dated as of March 28, 2018, the “Note Purchase Agreement”), among Rosehill Operating, the Company, the holders of the Second Lien Notes party thereto (the “Holders”) and U.S. Bank National Association, as agent and collateral agent on behalf of the Holders. The Second Lien Notes were issued and sold to the Holders in a private placement exempt from the registration requirements under the Securities Act of 1933, as amended (such issuance and sale, the “Notes Purchase”). Under the Note Purchase Agreement, Rosehill Operating may, at its option, redeem the Second Lien Notes in whole or in part, together with accrued and unpaid interest thereon, (i) at any time after December 8, 2019 but on or prior to December 8, 2020, at a redemption price equal to 103% of the principal amount of the Second Lien Notes being redeemed, (ii) at any time after December 8, 2020 but on or prior to December 8, 2021, at a redemption price equal to 101.5% of the principal amount of the Second Lien Notes being redeemed and (iii) at any time after December 8, 2021, at a redemption price equal to the principal amount of the Second Lien Notes being redeemed. On or prior to December 8, 2019, Rosehill Operating may, at its option, redeem the Second Lien Notes in whole or in part, together with accrued and unpaid interest thereon, at a redemption price equal to 103% of the principal amount of the Second Lien Notes being redeemed plus an additional make-whole premium set forth in the Note Purchase Agreement. The Second Lien Notes may become subject to redemption under certain other circumstances, including upon the incurrence of non-permitted debt or, subject to various exceptions, reinvestments rights and prepayment or redemption rights with respect to other debt or equity of Rosehill Operating, upon an asset sale, hedge termination or casualty event. Rosehill Operating will be further required to make an offer to redeem the Second Lien Notes upon a Change in Control (as defined in the Note Purchase Agreement) at a redemption price equal to 101% of the principal amount being redeemed. Other than in connection with a change in control or casualty event, the redemption prices and make-whole premium described in the foregoing paragraph shall also apply, at such times and to the extent set forth therein, to any mandatory redemption of the Second Lien Notes or any acceleration of the Second Lien Notes prior to the stated maturity thereof upon the occurrence of an event of default. The Note Purchase Agreement requires Rosehill Operating to maintain a leverage ratio, which is the ratio of the sum of all of Rosehill Operating’s Total Debt to Annualized EBITDAX (as such terms are defined in the Note Purchase Agreement) for the four fiscal quarters then ended, of not greater than 4.00 to 1.00 . The Company was in compliance with the financial covenants in the Note Purchase Agreement for the measurement period ended June 30, 2019 . The Note Purchase Agreement contains various affirmative and negative covenants, events of default and other terms and provisions that are based largely on the Amended and Restated Credit Agreement, with a number of important modifications reflecting the second lien nature of the Second Lien Notes and certain other terms that were agreed to with the Holders. The negative covenants may limit Rosehill Operating’s ability to, among other things, incur additional indebtedness (including under senior unsecured notes), make investments, make or declare dividends or distributions, redeem its preferred equity, acquire or dispose of oil and gas properties and other assets or engage in certain other transactions without the prior consent of the Holders, subject to various exceptions, qualifications and value thresholds. Rosehill Operating is also required to meet minimum commodity hedging levels based on its expected production on an ongoing basis. The Company is subject to certain limited restrictions under the Note Purchase Agreement, including (without limitation) a negative pledge with respect to its equity interests in Rosehill Operating and a contingent obligation to guarantee the Second Lien Notes upon request by the Holders in the event that the Company incurs debt obligations. The obligations of Rosehill Operating under the Note Purchase Agreement are secured on a second-lien basis by the same collateral that secures its first-lien obligations. In connection with the Notes Purchase, Rosehill Operating has granted first-lien and second-lien security interests over additional collateral to meet the minimum mortgage requirements under the Note Purchase Agreement. Deferred Financing Costs and Debt Discount The Company capitalizes discounts and certain direct costs associated with the issuance of debt and amortizes such costs over the lives of the respective debt instruments. The Company amortized debt issuance costs and discounts of $0.5 million and $0.4 million for the three months ended June 30, 2019 and 2018 , respectively, and $0.9 million and $1.3 million for the six months ended June 30, 2019 and 2018 , respectively. The deferred financing costs related to the Amended and Restated Credit Agreement are classified in prepaid assets and the deferred financing costs and discounts related to the Second Lien Notes are netted against the long-term debt. The following table summarizes the Company’s deferred financing costs and debt discounts: June 30, December 31, 2019 2018 (In thousands) Revolving credit facility Debt issuance costs $ 3,026 $ 2,368 Accumulated amortization of debt issuance costs (677 ) (361 ) Net deferred costs - Revolving credit facility $ 2,349 $ 2,007 Second Lien Notes Debt discount $ 3,000 $ 3,000 Accumulated amortization of debt discount (767 ) (509 ) Debt issuance costs 3,868 3,868 Accumulated amortization of debt issuance costs (990 ) (657 ) Net deferred costs - Second Lien Notes $ 5,111 $ 5,702 Total deferred financing costs and debt discount, net $ 7,460 $ 7,709

10% Series B Redeemable Preferr

10% Series B Redeemable Preferred Stock	6 Months Ended
	Jun. 30, 2019
Temporary Equity Disclosure [Abstract]
10% Series B Redeemable Preferred Stock	10% Series B Redeemable Preferred Stock On December 8, 2017, in connection with the acquisition of mineral rights, royalty interests and other associated assets in the Southern Delaware Basin (the “White Wolf Acquisition”), the Company entered into a Series B Redeemable Preferred Stock Purchase Agreement (the “Series B Preferred Stock Agreement”) to issue 150,000 shares of the Company’s 10.00% Series B Redeemable Preferred Stock, par value of $0.0001 per share (the “Series B Preferred Stock”), for an aggregate purchase price of $150.0 million , less transaction costs, advisory and up-front fees of approximately $10.0 million to certain private funds and accounts managed by EIG. Holders of the Series B Preferred Stock are entitled to receive, when, as and if declared by the Board of Directors of the Company (the “Board”), cumulative dividends in cash, at a rate of 10.00% per annum on the $1,000 liquidation preference per share of Series B Preferred Stock, payable quarterly in arrears on January 15, April 15, July 15 and October 15 of each year, commencing on January 15, 2018. With respect to dividends declared for any quarter ending on or prior to January 15, 2019, the Company had the option, and elected, to pay as dividends additional shares of Series B Preferred Stock in kind (the “Series B PIK Shares”) in an amount up to 40% of that which would have been payable had the dividends been fully paid in cash. Holders of the Series B Preferred Stock have no voting rights and have limited consent rights with respect to the taking of certain corporate actions by the Company. Upon the Company’s voluntary or involuntary liquidation, winding-up or dissolution, each holder of Series B Preferred Stock will be entitled to receive the Base Return Amount (as defined in the Series B Preferred Stock Agreement) plus accrued and unpaid dividends. The shares of Series B Preferred Stock are redeemable at the election of the holders on or after December 8, 2023, and upon certain conditions and at any time at the Company’s option. As the holders of Series B Preferred Stock have an option to redeem the Series B Preferred Stock at a future date, the proceeds from the Series B Preferred Stock have been included in temporary, or “mezzanine” equity, between total liabilities and stockholders’ equity on the Condensed Consolidated Balance Sheets. The Series B Preferred Stock, while not currently redeemable at the option of the holders, are considered probable of becoming redeemable and therefore will be subsequently remeasured each reporting period by accreting the initial value to the estimated redemption date of December 8, 2023 when the Series B Preferred Stock is redeemable in whole or in part at the election of the holders of Series B Preferred Stock. The accretion is presented as a deemed dividend and recorded in mezzanine equity on the Condensed Consolidated Balance Sheets and within preferred dividends on the Condensed Consolidated Statements of Operations. In addition to the 10.00% per annum cumulative dividend holders of the Series B Preferred Stock are entitled to receive, upon redemption of the Series B Preferred Stock, such holders are guaranteed a base return on the initial 150,000 shares purchased in an amount equal to (1) $1,250 per share of Series B Preferred Stock times the number of outstanding shares of Series B Preferred Stock had the Company redeemed the shares prior to the first anniversary of the date of issuance of such share of Series B Preferred Stock; (2) $1,350 per share of Series B Preferred Stock times the number of outstanding shares of Series B Preferred Stock if the Company redeems the shares on or after the first anniversary and prior to the second anniversary of the date of issuance of such share of Series B Preferred Stock; and (3) on or after the second anniversary of the date of issuance of such share of Series B Preferred Stock, the greater of (x) $1,500 per share of Series B Preferred Stock and (y) an amount necessary to achieve a 16% internal rate of return (“IRR”) (the “Base Return Amount”) with respect to such shares of Series B Preferred Stock. Since the Series B Preferred Stock can be redeemed by the holders on or after December 8, 2023 and management has no immediate plans to redeem before that date, the Company has accrued a guaranteed return amount in order to achieve the 16% IRR. In the event of a change of control, the Company shall redeem in cash all of the outstanding shares of Series B Preferred Stock, excluding Series B PIK Shares, for a price per share equal to the Base Return Amount and all Series B PIK Shares at the purchase price of $1,000 per share. The Company assessed the change of control feature and determined that the redemption of the outstanding shares of Series B Preferred Stock, excluding Series B PIK Shares, for a price per share equal to the Base Return Amount was an embedded derivative that required bifurcation and was accounted for at fair value. The Company reflected the following activity in mezzanine equity for the Series B Preferred Stock for the six months ended June 30, 2019 : Series B Preferred Shares Series B Preferred Stock Value Guaranteed Return Total (In thousands, except share data) Total Series B Preferred Stock at December 31, 2018 156,746 $ 147,603 $ 7,508 $ 155,111 Return (16% IRR) — — 10,930 10,930 Dividends declared and paid or payable in cash — — (7,774 ) (7,774 ) Accretion of discount - deemed dividend — 741 — 741 Total Series B Preferred Stock at June 30, 2019 156,746 $ 148,344 $ 10,664 $ 159,008 For the quarters ended June 30, 2019 and March 31, 2019, dividends per share on the Company’s Series B Preferred Stock was $24.93 and $24.66 , respectively, which was the same as the comparative periods in 2018. Stockholders’ Equity Class A Common Stock. Holders of the Company’s Class A Common Stock are entitled to one vote for each share held on all matters to be voted on by the stockholders. Holders of the Class A Common Stock and holders of the Class B Common Stock voting together as a single class have the exclusive right to vote for the election of directors and on all other matters properly submitted to a vote of the stockholders. Class B Common Stock. Shares of Class B Common Stock may be issued only to Tema, their respective successors and assignees, as well as any permitted transferees of Tema. A holder of Class B Common Stock may transfer shares of Class B Common Stock to any transferee (other than the Company) only if such holder also simultaneously transfers an equal number of such holder’s Rosehill Operating Common Units to such transferee in compliance with the LLC Agreement. Holders of the Company’s Class B Common Stock will vote together as a single class with holders of the Company’s Class A Common Stock on all matters properly submitted to a vote of the stockholders. Holders of Class B Common Stock generally have the right to cause the Company to redeem all or a portion of their Rosehill Operating Common Units in exchange for shares of the Company’s Class A Common Stock on a one-to-one basis or, at the Company’s option, an equivalent amount of cash. The Company may, however, at its option, affect a direct exchange of cash or Class A Common Stock for such Rosehill Operating Common Units in lieu of such a redemption. Upon the future redemption or exchange of Rosehill Operating Common Units, a corresponding number of shares of Class B Common Stock will be canceled. In the Transaction, the Company issued to Rosehill Operating 29,807,692 shares of its Class B Common Stock and 4,000,000 warrants exercisable for shares of its Class A Common Stock in exchange for 4,000,000 warrants exercisable for Rosehill Operating Common Units. Rosehill Operating immediately distributed the warrants and shares of Class B Common Stock to Tema. 8% Series A Cumulative Perpetual Convertible Preferred Stock. Each share of Series A Preferred Stock has a liquidation preference of $1,000 per share and is convertible, at the holder’s option at any time, initially into 86.9565 shares of the Company’s Class A Common Stock (which is equivalent to an initial conversion price of approximately $11.50 per share of Class A Common Stock), subject to specified adjustments and limitations as set forth in the Certificate of Designation of Series A Preferred Stock (the “Certificate of Designation”). Under certain circumstances, the Company will increase the conversion rate upon a “fundamental change” as described in the Certificate of Designation. Future issuances of Series A Preferred Stock resulting from dividends paid-in-kind may, depending on the trading price per share of the Company’s Class A Common Stock on the dividend date, contain a beneficial conversion option determined on the same basis as described above and, thus, result in additional non-cash deemed dividends which will reduce net income attributable to the Company’s common stockholders when such paid-in-kind shares of Series A Preferred Stock are granted. The Company will ratably recognize additional non-cash deemed dividends attributable to the Series A Preferred Stock discount which was created by the issuance of the warrants exercisable for shares of Class A Common Stock and the contribution of the Class A Common Stock, as the Series A Preferred Stock is converted to Class A Common Stock. Such non-cash deemed dividends will reduce net income attributable to Rosehill Resources Inc. common stockholders. The table below summarizes the Series A Preferred Stock dividends reflected in the Company’s Condensed Consolidated Statements of Operations: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 (In thousands) Series A Preferred Stock paid-in-kind $ — $ 984 $ — $ 1,949 Series A Preferred Stock paid or payable in cash 2,027 984 4,033 1,948 Series A Preferred Stock dividends $ 2,027 $ 1,968 $ 4,033 $ 3,897 For the quarters ended June 30, 2019 and March 31, 2019, dividends per share on the Company’s Series A Preferred Stock was $19.95 and $19.73 , respectively, which was the same as the comparative periods in 2018. Warrants. Each of the Company’s warrants entitles the registered holder to purchase one share of the Company’s Class A Common Stock at a price of $11.50 per share, subject to adjustment pursuant to the terms of the warrant agreement. The warrants have a five-year term which commenced on April 27, 2017, upon the completion of the Transaction, and will expire on April 27, 2022. As of June 30, 2019 , there were 25,594,158 warrants exercisable for shares of Class A Common Stock outstanding at a price of $11.50 . Of the outstanding exercisable warrants, there were 588,276 warrants issued in connection with the formation of the Company, 7,597,044 public warrants (the “Public Warrants”) issued in connection with KLRE’s initial public offering, 5,000,000 warrants issued to certain qualified institutional buyers and accredited investors (the “PIPE Investors”) in connection with the Transaction, and 4,000,000 warrants issued to Tema in connection with the Transaction. The Company may call the warrants for redemption if the reported last sale price of the Class A Common Stock equals or exceeds $21.00 per share for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date the Company sends the notice of redemption to the warrant holders. Of the outstanding warrants exercisable, there were 8,408,838 warrants issued to the Sponsor and EarlyBirdCapital Inc. pursuant to a private placement (the “Private Placement Warrants”) in connection with the Company’s initial public offering. The Private Placement Warrants are not redeemable by the Company and are exercisable on a cashless basis so long as they are held by the initial holders or their permitted transferees. Otherwise, the Private Placement Warrants have terms and provisions that are identical to those of the warrants described above. If the Private Placement Warrants are held by holders other than the initial holders or their permitted transferees, the Private Placement Warrants will be redeemable by the Company and exercisable by the holders on the same basis as the warrants described above. Noncontrolling Interest. Noncontrolling interest represents the membership interest held by holders other than the Company. The Company has consolidated the financial position and results of operations of Rosehill Operating and reflected the proportionate interest held by Tema as a noncontrolling interest. The noncontrolling interest will change if warrants are exercised for Class A Common Stock, when shares of Series A Preferred Stock are converted into shares of Class A Common Stock, when shares of Class A Common Stock are issued in connection with the Company’s LTIP and if Tema elects to exchange the Class B Common Stock received in connection with the Transaction for shares of Class A Common Stock. At June 30, 2019 , Tema held an approximate 67.3% noncontrolling interest in Rosehill Operating.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes In 2017, the Company became the sole managing member of Rosehill Operating, the Company’s accounting predecessor. Rosehill Operating is a limited liability company that is treated as a partnership for U.S. federal income tax purposes and is not subject to U.S. federal income tax. Any taxable income or loss generated by Rosehill Operating is passed through to and included in the taxable income or loss of its members, including the Company. The Company is a C corporation and is subject to U.S. federal income tax and state and local income taxes. The Company’s income tax provision was an expense of $1.5 million and a benefit of $15.2 million for the three months ended June 30, 2019 and 2018 , respectively, and an expense of $4.8 million and a benefit of $17.4 million for the six months ended June 30, 2019 and 2018 , respectively. The Company’s effective tax rate was 3% and 232% for the three months ended June 30, 2019 and 2018, respectively, and 9% and 106% for the six months ended June 30, 2019 and 2018 , respectively. The effective tax rate differs from the enacted statutory rate of 21% in 2019 and 2018 primarily due to the allocation of profits and losses to Rosehill and the noncontrolling interest holder in accordance with the LLC Agreement and the impact of state income taxes. As of June 30, 2019 , the Company had approximately $38.1 million of U.S. federal net operating loss carryovers, which will begin to expire in 2035 . The Company periodically assesses whether it is more likely than not that it will generate sufficient taxable income to realize its deferred tax assets, including NOL carry forwards. A valuation allowance for deferred tax assets is recognized when it is more likely than not that some or all of the benefit from the deferred tax assets will not be realized. As of June 30, 2019 , we have no valuation allowance because the Company thinks it is more likely than not that its deferred tax assets will be realized prior to their expiration. In making this determination, the Company considers all available positive and negative evidence and makes certain assumptions. The Company considers, among other things, its deferred tax liabilities, the overall business environment, its historical earnings and losses, current industry trends and its outlook for future years. The Company is subject to the following material taxing jurisdictions: the United States, Texas and New Mexico. As of June 30, 2019 , the Company has no current tax years under audit. The Company remains subject to examination for federal income taxes and state income taxes for tax years 2015 to present. The Company has evaluated all tax positions for which the statute of limitations remains open and believes that the material positions taken would more likely than not be sustained upon examination. Therefore, as of June 30, 2019 , the Company had not established any reserves for, nor recorded any unrecognized benefits related to, uncertain tax positions. The Company’s policy is to recognize interest and penalties related to uncertain tax positions in income tax expense. Tax Receivable Agreement In connection with the Transaction, the Company entered into a tax receivable agreement (“Tax Receivable Agreement”) with the noncontrolling interest holder, Tema. The Tax Receivable Agreement provides that the Company will pay to Tema 90% of the net cash savings, if any, in U.S. federal, state and local income tax that the Company realizes (or is deemed to realize in certain circumstances) in periods beginning with and after the closing of the Transaction as a result of the following: (i) any tax basis increases in the assets of Rosehill Operating resulting from the distribution to Tema of $35 million in cash, the shares of Class B Common Stock and the issuance of 4,000,000 warrants to Rosehill Operating exercisable for shares of its Class A Common Stock, all in connection with the Transaction, and resulting from the assumption of Tema liabilities in connection with the Transaction, (ii) the tax basis increases in the assets of Rosehill Operating resulting from a redemption by Rosehill Operating with respect to Tema and (iii) imputed interest deemed to be paid by the Company as a result of, and additional tax basis arising from, payments it makes under the Tax Receivable Agreement. The estimation of liability under the Tax Receivable Agreement is by its nature imprecise and subject to significant assumptions regarding the amount and timing of future taxable income. The Company is not obligated to make any payments under the Tax Receivable Agreement until the tax benefits associated with the transaction that gave rise to the payment obligation are realized. Amounts payable under the Tax Receivable Agreement are contingent upon, among other things, (i) generation of future taxable income over the term of the Tax Receivable Agreement and (ii) future changes in tax laws. If the Company does not generate sufficient taxable income in the aggregate over the term of the Tax Receivable Agreement to utilize the tax benefits, then the Company would not be required to make the related Tax Receivable Agreement payment. As of June 30, 2019 and December 31, 2018, the Company recognized a Tax Receivable Agreement liability of approximately $3.5 million after concluding that it was probable that we would have sufficient future taxable income to utilize the related tax benefits. If and when Tema exercises its right to cause the Company to redeem all or a portion of its Rosehill Operating Common Units, a liability under the Tax Receivable Agreement relating to such redemption will be recorded. The amount of liability will be based on 90% of the estimated future cash tax savings that the Company will realize as a result of increases in the basis of Rosehill Operating’s assets attributed to the Company resulting from such redemption. The amount of the increase in asset basis, the related estimated cash tax savings and the attendant Tax Receivable Agreement liability will depend, in part, on the price of the Class A Common Stock at the time of the relevant redemption. Due to the uncertainty surrounding the amount and timing of future redemptions of Rosehill Operating Common Units by Tema, the Company does not believe it is appropriate to record additional Tax Receivable Agreement liability until such time that Rosehill Operating Common Units are redeemed for shares of Class A Common Stock or cash.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Stockholders' Equity	10% Series B Redeemable Preferred Stock On December 8, 2017, in connection with the acquisition of mineral rights, royalty interests and other associated assets in the Southern Delaware Basin (the “White Wolf Acquisition”), the Company entered into a Series B Redeemable Preferred Stock Purchase Agreement (the “Series B Preferred Stock Agreement”) to issue 150,000 shares of the Company’s 10.00% Series B Redeemable Preferred Stock, par value of $0.0001 per share (the “Series B Preferred Stock”), for an aggregate purchase price of $150.0 million , less transaction costs, advisory and up-front fees of approximately $10.0 million to certain private funds and accounts managed by EIG. Holders of the Series B Preferred Stock are entitled to receive, when, as and if declared by the Board of Directors of the Company (the “Board”), cumulative dividends in cash, at a rate of 10.00% per annum on the $1,000 liquidation preference per share of Series B Preferred Stock, payable quarterly in arrears on January 15, April 15, July 15 and October 15 of each year, commencing on January 15, 2018. With respect to dividends declared for any quarter ending on or prior to January 15, 2019, the Company had the option, and elected, to pay as dividends additional shares of Series B Preferred Stock in kind (the “Series B PIK Shares”) in an amount up to 40% of that which would have been payable had the dividends been fully paid in cash. Holders of the Series B Preferred Stock have no voting rights and have limited consent rights with respect to the taking of certain corporate actions by the Company. Upon the Company’s voluntary or involuntary liquidation, winding-up or dissolution, each holder of Series B Preferred Stock will be entitled to receive the Base Return Amount (as defined in the Series B Preferred Stock Agreement) plus accrued and unpaid dividends. The shares of Series B Preferred Stock are redeemable at the election of the holders on or after December 8, 2023, and upon certain conditions and at any time at the Company’s option. As the holders of Series B Preferred Stock have an option to redeem the Series B Preferred Stock at a future date, the proceeds from the Series B Preferred Stock have been included in temporary, or “mezzanine” equity, between total liabilities and stockholders’ equity on the Condensed Consolidated Balance Sheets. The Series B Preferred Stock, while not currently redeemable at the option of the holders, are considered probable of becoming redeemable and therefore will be subsequently remeasured each reporting period by accreting the initial value to the estimated redemption date of December 8, 2023 when the Series B Preferred Stock is redeemable in whole or in part at the election of the holders of Series B Preferred Stock. The accretion is presented as a deemed dividend and recorded in mezzanine equity on the Condensed Consolidated Balance Sheets and within preferred dividends on the Condensed Consolidated Statements of Operations. In addition to the 10.00% per annum cumulative dividend holders of the Series B Preferred Stock are entitled to receive, upon redemption of the Series B Preferred Stock, such holders are guaranteed a base return on the initial 150,000 shares purchased in an amount equal to (1) $1,250 per share of Series B Preferred Stock times the number of outstanding shares of Series B Preferred Stock had the Company redeemed the shares prior to the first anniversary of the date of issuance of such share of Series B Preferred Stock; (2) $1,350 per share of Series B Preferred Stock times the number of outstanding shares of Series B Preferred Stock if the Company redeems the shares on or after the first anniversary and prior to the second anniversary of the date of issuance of such share of Series B Preferred Stock; and (3) on or after the second anniversary of the date of issuance of such share of Series B Preferred Stock, the greater of (x) $1,500 per share of Series B Preferred Stock and (y) an amount necessary to achieve a 16% internal rate of return (“IRR”) (the “Base Return Amount”) with respect to such shares of Series B Preferred Stock. Since the Series B Preferred Stock can be redeemed by the holders on or after December 8, 2023 and management has no immediate plans to redeem before that date, the Company has accrued a guaranteed return amount in order to achieve the 16% IRR. In the event of a change of control, the Company shall redeem in cash all of the outstanding shares of Series B Preferred Stock, excluding Series B PIK Shares, for a price per share equal to the Base Return Amount and all Series B PIK Shares at the purchase price of $1,000 per share. The Company assessed the change of control feature and determined that the redemption of the outstanding shares of Series B Preferred Stock, excluding Series B PIK Shares, for a price per share equal to the Base Return Amount was an embedded derivative that required bifurcation and was accounted for at fair value. The Company reflected the following activity in mezzanine equity for the Series B Preferred Stock for the six months ended June 30, 2019 : Series B Preferred Shares Series B Preferred Stock Value Guaranteed Return Total (In thousands, except share data) Total Series B Preferred Stock at December 31, 2018 156,746 $ 147,603 $ 7,508 $ 155,111 Return (16% IRR) — — 10,930 10,930 Dividends declared and paid or payable in cash — — (7,774 ) (7,774 ) Accretion of discount - deemed dividend — 741 — 741 Total Series B Preferred Stock at June 30, 2019 156,746 $ 148,344 $ 10,664 $ 159,008 For the quarters ended June 30, 2019 and March 31, 2019, dividends per share on the Company’s Series B Preferred Stock was $24.93 and $24.66 , respectively, which was the same as the comparative periods in 2018. Stockholders’ Equity Class A Common Stock. Holders of the Company’s Class A Common Stock are entitled to one vote for each share held on all matters to be voted on by the stockholders. Holders of the Class A Common Stock and holders of the Class B Common Stock voting together as a single class have the exclusive right to vote for the election of directors and on all other matters properly submitted to a vote of the stockholders. Class B Common Stock. Shares of Class B Common Stock may be issued only to Tema, their respective successors and assignees, as well as any permitted transferees of Tema. A holder of Class B Common Stock may transfer shares of Class B Common Stock to any transferee (other than the Company) only if such holder also simultaneously transfers an equal number of such holder’s Rosehill Operating Common Units to such transferee in compliance with the LLC Agreement. Holders of the Company’s Class B Common Stock will vote together as a single class with holders of the Company’s Class A Common Stock on all matters properly submitted to a vote of the stockholders. Holders of Class B Common Stock generally have the right to cause the Company to redeem all or a portion of their Rosehill Operating Common Units in exchange for shares of the Company’s Class A Common Stock on a one-to-one basis or, at the Company’s option, an equivalent amount of cash. The Company may, however, at its option, affect a direct exchange of cash or Class A Common Stock for such Rosehill Operating Common Units in lieu of such a redemption. Upon the future redemption or exchange of Rosehill Operating Common Units, a corresponding number of shares of Class B Common Stock will be canceled. In the Transaction, the Company issued to Rosehill Operating 29,807,692 shares of its Class B Common Stock and 4,000,000 warrants exercisable for shares of its Class A Common Stock in exchange for 4,000,000 warrants exercisable for Rosehill Operating Common Units. Rosehill Operating immediately distributed the warrants and shares of Class B Common Stock to Tema. 8% Series A Cumulative Perpetual Convertible Preferred Stock. Each share of Series A Preferred Stock has a liquidation preference of $1,000 per share and is convertible, at the holder’s option at any time, initially into 86.9565 shares of the Company’s Class A Common Stock (which is equivalent to an initial conversion price of approximately $11.50 per share of Class A Common Stock), subject to specified adjustments and limitations as set forth in the Certificate of Designation of Series A Preferred Stock (the “Certificate of Designation”). Under certain circumstances, the Company will increase the conversion rate upon a “fundamental change” as described in the Certificate of Designation. Future issuances of Series A Preferred Stock resulting from dividends paid-in-kind may, depending on the trading price per share of the Company’s Class A Common Stock on the dividend date, contain a beneficial conversion option determined on the same basis as described above and, thus, result in additional non-cash deemed dividends which will reduce net income attributable to the Company’s common stockholders when such paid-in-kind shares of Series A Preferred Stock are granted. The Company will ratably recognize additional non-cash deemed dividends attributable to the Series A Preferred Stock discount which was created by the issuance of the warrants exercisable for shares of Class A Common Stock and the contribution of the Class A Common Stock, as the Series A Preferred Stock is converted to Class A Common Stock. Such non-cash deemed dividends will reduce net income attributable to Rosehill Resources Inc. common stockholders. The table below summarizes the Series A Preferred Stock dividends reflected in the Company’s Condensed Consolidated Statements of Operations: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 (In thousands) Series A Preferred Stock paid-in-kind $ — $ 984 $ — $ 1,949 Series A Preferred Stock paid or payable in cash 2,027 984 4,033 1,948 Series A Preferred Stock dividends $ 2,027 $ 1,968 $ 4,033 $ 3,897 For the quarters ended June 30, 2019 and March 31, 2019, dividends per share on the Company’s Series A Preferred Stock was $19.95 and $19.73 , respectively, which was the same as the comparative periods in 2018. Warrants. Each of the Company’s warrants entitles the registered holder to purchase one share of the Company’s Class A Common Stock at a price of $11.50 per share, subject to adjustment pursuant to the terms of the warrant agreement. The warrants have a five-year term which commenced on April 27, 2017, upon the completion of the Transaction, and will expire on April 27, 2022. As of June 30, 2019 , there were 25,594,158 warrants exercisable for shares of Class A Common Stock outstanding at a price of $11.50 . Of the outstanding exercisable warrants, there were 588,276 warrants issued in connection with the formation of the Company, 7,597,044 public warrants (the “Public Warrants”) issued in connection with KLRE’s initial public offering, 5,000,000 warrants issued to certain qualified institutional buyers and accredited investors (the “PIPE Investors”) in connection with the Transaction, and 4,000,000 warrants issued to Tema in connection with the Transaction. The Company may call the warrants for redemption if the reported last sale price of the Class A Common Stock equals or exceeds $21.00 per share for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date the Company sends the notice of redemption to the warrant holders. Of the outstanding warrants exercisable, there were 8,408,838 warrants issued to the Sponsor and EarlyBirdCapital Inc. pursuant to a private placement (the “Private Placement Warrants”) in connection with the Company’s initial public offering. The Private Placement Warrants are not redeemable by the Company and are exercisable on a cashless basis so long as they are held by the initial holders or their permitted transferees. Otherwise, the Private Placement Warrants have terms and provisions that are identical to those of the warrants described above. If the Private Placement Warrants are held by holders other than the initial holders or their permitted transferees, the Private Placement Warrants will be redeemable by the Company and exercisable by the holders on the same basis as the warrants described above. Noncontrolling Interest. Noncontrolling interest represents the membership interest held by holders other than the Company. The Company has consolidated the financial position and results of operations of Rosehill Operating and reflected the proportionate interest held by Tema as a noncontrolling interest. The noncontrolling interest will change if warrants are exercised for Class A Common Stock, when shares of Series A Preferred Stock are converted into shares of Class A Common Stock, when shares of Class A Common Stock are issued in connection with the Company’s LTIP and if Tema elects to exchange the Class B Common Stock received in connection with the Transaction for shares of Class A Common Stock. At June 30, 2019 , Tema held an approximate 67.3% noncontrolling interest in Rosehill Operating.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation Long-Term Incentive Plan The LTIP permits the grant of a number of different types of equity, equity-based and cash awards to employees, directors and consultants, including grant options, SARs, restricted stock, restricted stock units, stock awards, dividend equivalents, other stock-based awards, substitute awards, performance awards or any combination of the foregoing, as determined by the Compensation Committee of the Board (the “Compensation Committee”), in its sole discretion. The purpose of the LTIP is to provide a means to attract and retain qualified employees, directors and consultants by affording such individuals a means to acquire and maintain stock ownership or awards, the value of which is tied to the performance of the Company. The LTIP also provides additional incentives and reward opportunities designed to strengthen such individuals’ concern for the welfare of the Company and their desire to remain in its employ. At the plan’s inception, 7,500,000 shares of Class A Common Stock were reserved for issuance under the LTIP. The Company has granted restricted stock, restricted stock units and performance share units under the LTIP. Stock-based compensation expense for restricted stock and restricted stock units is recognized on a straight-line basis over the requisite service period for each separately vesting tranche of the award as if the award was, in substance, multiple awards. Stock-based compensation is included in general and administrative expense on the Company’s Condensed Consolidated Statements of Operations and forfeitures are recognized as they occur. The stock-based compensation expense recognized was $1.9 million and $1.8 million for the three months ended June 30, 2019 and 2018 , respectively, and $2.9 million and $3.3 million for the six months ended June 30, 2019 and 2018 , respectively. As of June 30, 2019 , 3,285,122 shares of Class A Common Stock remained available for issuance under the LTIP, subject to adjustment pursuant to the plan. Restricted Stock Restricted stock granted under the LTIP is issued on the grant date, but is restricted as to transferability until vesting. These restricted shares generally vest on the first anniversary of the date of grant. The following table sets forth the restricted stock transactions for the six months ended June 30, 2019 : Restricted Stock Weighted-Average Grant Date Fair Value Nonvested - December 31, 2018 246,653 $ 6.24 Granted 428,984 3.12 Vested (114,360 ) 7.25 Forfeited — — Nonvested - June 30, 2019 561,277 $ 3.66 As of June 30, 2019 , there was $1.2 million of unrecognized compensation cost related to nonvested restricted stock which is expected to be recognized over a weighted-average period of 0.7 years. Stock-Settled Time-Based Restricted Stock Units Stock-settled time-based restricted stock units entitle the holder to receive one share of Class A Common Stock for each restricted stock unit when such restricted stock unit vests. These stock-settled time-based restricted stock units generally vest in three substantially equal installments on the first three anniversaries of the date of grant. The following table sets forth stock-settled time-based restricted stock unit transactions for the six months ended June 30, 2019 : Restricted Stock Units Weighted-Average Grant Date Fair Value Nonvested - December 31, 2018 713,558 $ 8.13 Granted 1,194,624 3.25 Vested (330,590 ) 8.44 Forfeited (141,344 ) 5.57 Nonvested - June 30, 2019 1,436,248 $ 4.27 As of June 30, 2019 , there was $5.4 million of unrecognized compensation cost related to nonvested stock-settled time-based restricted stock units which is expected to be recognized over a weighted-average period of 2.1 years. Market Based Performance Share Units The Company granted a target number of market based performance share units to certain employees. The market based performance share units will be settled in stock, provided that certain performance criteria are met. The performance criteria applicable to such awards is relative total shareholder return, which measures the Company’s total shareholder return as compared to the total shareholder return of the peer group identified by the Compensation Committee. The Company recognizes compensation expense for the performance share units subject to market conditions regardless of whether it becomes probable that these conditions will be achieved or not and compensation expense is not reversed if vesting does not actually occur. The following table sets forth market based performance share unit transactions for the six months ended June 30, 2019 : Performance Restricted Stock Units Weighted-Average Grant Date Fair Value Nonvested - December 31, 2018 284,415 $ 8.99 Granted 845,680 4.17 Vested — — Forfeited (148,206 ) 6.80 Nonvested - June 30, 2019 981,889 $ 5.17 The grant-date fair value was estimated using a Monte Carlo valuation model. The Monte Carlo valuation model is based on random projections of stock price paths and must be repeated numerous times to achieve a probabilistic assessment. Expected volatility was calculated based on the historical volatility of the Class A Common Stock, and the risk-free interest rate is based on U.S. Treasury yield curve rates with maturities consistent with the three-year vesting period. The following weighted-average assumptions were used to value the market based performance awards: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Expected volatility 71.4 % — % 68.9 % 89.5 % Risk-free interest rate 2.2 % — % 2.2 % 2.4 % Dividend yield — % — % — % — % Expected life (years) 1.63 — 2.49 2.77 As of June 30, 2019 , there was $3.9 million of unrecognized compensation cost related to shares of market based performance units which is expected to be recognized over a weighted average period of 2.1 years. Cash-Settled Restricted Stock Units The Company grants cash-settled restricted stock units to certain employees. Cash-settled restricted stock units entitle the holder to receive the cash equivalent of one share of Class A Common Stock for each restricted stock unit when such restricted stock unit vests. These cash-settled restricted stock units generally vest in three substantially equal installments on the first three anniversaries of the date of grant. Cash-settled restricted stock units are classified as liabilities and are remeasured at each reporting date until settled. The stock-based compensation expense for cash-settled restricted stock units is recognized on a straight-line basis over the requisite service period for each separately vesting tranche of the award as if the award was, in substance, multiple awards. The following table sets forth cash-settled restricted stock unit transactions for the six months ended June 30, 2019 : Cash-Settled Restricted Stock Units Weighted-Average Grant Date Fair Value Nonvested - December 31, 2018 78,224 $ 6.63 Granted 409,390 3.12 Vested (28,123 ) 6.63 Forfeited (15,649 ) 4.48 Nonvested - June 30, 2019 443,842 $ 3.47 As of June 30, 2019 , the Company had a liability for cash-settled restricted stock units of $0.2 million based on a closing price of $3.70 on June 28, 2019 . As of June 30, 2019 , there was $1.5 million of unrecognized compensation cost related to shares of cash-settled restricted stock units which is expected to be recognized over a weighted average period of 2.6 years. Retirement Benefits The Company has not maintained, and does not currently maintain, a defined benefit pension plan or nonqualified deferred compensation plan. The Company currently maintains a retirement plan pursuant to which employees are permitted to contribute portions of their base compensation to a tax-qualified retirement account. For the periods ending on and before December 31, 2018, the Company provided matching contributions equal to 100% of elective deferrals up to 3% of eligible compensation and 50% of elective deferrals from 3% to a maximum of 5% of eligible compensation, subject to the applicable contributions limits. Beginning on January 1, 2019, the Company changed its matching contributions to 100% of elective deferrals up to 6% of eligible compensation. Matching contributions are immediately fully vested. The Company’s matching contributions under the plan totaled $0.2 million and $0.1 million for the three months ended June 30, 2019 and 2018 , respectively, and $0.4 million and $0.2 million for the six months ended June 30, 2019 and 2018 , respectively.

Transactions with Related Parti

Transactions with Related Parties	6 Months Ended
	Jun. 30, 2019
Related Party Transactions [Abstract]
Transactions with Related Parties	Transactions with Related Parties The Company is not entitled to compensation for its services as managing member of Rosehill Operating. The Company is entitled to reimbursement by Rosehill Operating for any costs, fees or expenses incurred on behalf of Rosehill Operating (including costs of securities offerings not borne directly by members, board of directors’ compensation and meeting costs, cost of periodic reports to its stockholders, litigation costs and damages arising from litigation, accounting and legal costs); provided that the Company will not be reimbursed for any of its income tax obligations. Transition Service Agreement . On April 27, 2017 in connection with the closing of the Transaction, the Company entered into a Transition Service Agreement (“TSA”) with Tema to provide certain services to each other following the closing of the Transaction. Pursuant to the terms, the Company agreed to provide to Tema (i) operation services for the assets excluded from the Transaction, (ii) divestment assistance and (iii) office space to Gateway Gathering and Marketing (“Gateway”). Tema agreed to provide to the Company (i) human resources and benefits administration, (ii) information technology and telecommunications, (iii) general business insurance and (iv) legal services. The TSA terminated on October 27, 2018. Rosehill Operating did not incur significant costs related to the TSA for the three and six months ended June 30, 2018. Gateway Gathering and Marketing . Gateway is a subsidiary of Rosemore. A portion of Rosehill Operating’s oil production was sold to Gateway. There were no revenues from production sold to Gateway for the three and six months ended June 30, 2019 . For the three and six months ended June 30, 2018 , revenues from production sold to Gateway were approximately $73.0 million and $124.5 million , respectively. There was no revenue receivable due from Gateway as of June 30, 2019 and December 31, 2018. Rosehill Operating has a Crude Oil Gathering Agreement and a Gas Gathering Agreement with Gateway for a portion of its production. All of the costs incurred under the Crude Oil Gathering Agreement during the three and six months ended June 30, 2018 were netted against the revenues received from Gateway due to Gateway being the purchaser of the oil production. Costs incurred for the three and six months ended June 30, 2019 under the Crude Oil Gathering Agreement were $0.2 million and $0.8 million , respectively. As of June 30, 2019 and December 31, 2018, there was no amount payable and $0.3 million , respectively, due to Gateway under the Crude Oil Gathering Agreement. Costs incurred under the Gas Gathering Agreement with Gateway for the three months ended June 30, 2019 and 2018 , were approximately $1.5 million and $1.3 million , respectively. Costs incurred under the Gas Gathering Agreement with Gateway for the six months ended June 30, 2019 and 2018 , were approximately $2.8 million and $1.6 million , respectively. As of June 30, 2019 and December 31, 2018, there was no amount payable due to Gateway related to the Gas Gathering Agreement. In 2018, Rosehill Operating entered into a Crude Oil Marketing Consulting Agreement with Gateway to, among other things, develop marketing strategies aimed at increasing realized prices from the sale of Rosehill Operating’s production. For the three and six months ended June 30, 2019 , the Company incurred costs of $0.1 million related to the consulting agreement. The Crude Oil Marketing Consulting Agreement was terminated in February 2019. The Company did not incur any costs related to the Crude Oil Marketing Consulting Agreement during the three or six months ended June 30, 2018. KLR Sponsor. In October 2018, Rosehill Operating entered into a Water Purchase Agreement with Seawolf Water Resources, LP (“Seawolf”), an affiliate of KLR Sponsor, to purchase water from Seawolf’s water wells for use in well completion operations. For the three and six months ended June 30, 2019 , Rosehill Operating incurred costs of $0.5 million and $0.7 million , respectively, related to this agreement. As of June 30, 2019 there was $0.1 million payable due to Seawolf and at December 31, 2018 there was $0.6 million included in accrued capital expenditures due to Seawolf. Distributions. The LLC Agreement requires Rosehill Operating to make a corresponding cash distribution to the Company at any time a dividend is to be paid by the Company to the holders of its Series A Preferred Stock and Series B Preferred Stock. The LLC Agreement allows for distributions to be made by Rosehill Operating to its members on a pro rata basis in accordance with the number of Rosehill Operating Common Units owned by each member out of funds legally available therefor. The Company expects Rosehill Operating may make distributions out of distributable cash periodically to the extent permitted by the Amended and Restated Credit Agreement as necessary to enable the Company to cover its operating expenses and other obligations, as well as to make dividend payments, if any, to the holders of its Class A Common Stock. In addition, the LLC Agreement generally requires Rosehill Operating to make (i) pro rata distributions (in accordance with the number of Rosehill Operating Common Units owned by each member) to its members, including the Company, in an amount at least sufficient to allow the Company to pay its taxes and satisfy its obligations under the Tax Receivable Agreement and (ii) tax advances, which will be repaid upon a redemption, in an amount sufficient to allow each of the members of Rosehill Operating to pay its respective taxes on such holder’s allocable share of Rosehill Operating’s taxable income after taking into account certain other distributions or payments received by the unitholder from Rosehill Operating or the Company.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments Rosehill Operating Common Unit Redemption Right. The LLC Agreement provides Tema with a redemption right, which entitles Tema to cause Rosehill Operating to redeem, from time to time, all or a portion of its Rosehill Operating Common Units (and a corresponding number of shares of Class B Common Stock) for, at Rosehill Operating’s option, newly issued shares of Class A Common Stock on a one-for-one basis or a cash payment equal to the average of the volume-weighted closing price of one share of Class A Common Stock for the twenty trading days prior to the date Tema delivers a notice of redemption for each Rosehill Operating Common Units redeemed (subject to customary adjustments, including for stock splits, stock dividends and reclassifications). In the event of a reclassification event (as defined in the LLC Agreement), the Company as managing member is required to ensure that each Rosehill Operating Common Unit (and a corresponding share of Class B Common Stock) is redeemable for the same amount and type of property, securities or cash that a share of Class A Common Stock becomes exchangeable for or converted into as a result of such reclassification event. Upon the exercise of the redemption right, Tema will surrender its Rosehill Operating Common Units (and a corresponding number of shares of Class B Common Stock) to Rosehill Operating and (i) Rosehill Operating shall cancel such Rosehill Operating Common Units and issue to the Company a number of Rosehill Operating Common Units equal to the number of surrendered Rosehill Operating Common Units and (ii) the Company shall cancel the surrendered shares of Class B Common Stock. The LLC Agreement requires that the Company contribute cash or shares of Class A Common Stock to Rosehill Operating in exchange for the issuance to the Company described in clause (i). Rosehill Operating will then distribute such cash or shares of Class A Common Stock to Tema to complete the redemption. Upon the exercise of the redemption right, the Company may, at its option, affect a direct exchange of cash or its Class A Common Stock for such Rosehill Operating Common Units in lieu of such a redemption. Maintenance of One-to-One Ratios. The LLC Agreement includes provisions intended to ensure that the Company at all times maintains a one-to-one ratio between (a) (i) the number of outstanding shares of Class A Common Stock and (ii) the number of Rosehill Operating Common Units owned by the Company (subject to certain exceptions for certain rights to purchase equity securities of the Company under a “poison pill” or similar shareholder rights plan, if any, certain convertible or exchangeable securities issued under the Company’s equity compensation plans and certain equity securities issued pursuant to the Company’s equity compensation plans (other than a stock option plan) that are restricted or have not vested thereunder) and (b) (i) the number of other outstanding equity securities of the Company (including the Series A Preferred Stock and the warrants exercisable for shares of Class A Common Stock) and (ii) the number of corresponding outstanding equity securities of Rosehill Operating. These provisions are intended to result in Tema having a voting interest in the Company that is identical to Tema’s economic interest in Rosehill Operating. Contingencies Legal . In the ordinary course of business, the Company is party to various legal actions, which arise primarily from its activities as operator of oil and natural gas wells. In management’s opinion, the outcome of any such currently pending legal actions will not have a material adverse effect on the Company’s financial position or results of operations. There is no material litigation, arbitration or governmental proceeding currently pending against the Company or any members of its management team in their capacity as such requiring a contingent liability to be recognized as of the date of the condensed consolidated financial statements.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The Company recognizes oil, natural gas and NGL revenue at the point in time when control of the product transfers to the customer, which differs depending on the contractual terms of each of the Company’s arrangements. Transfer of control drives the presentation of gathering, transportation, processing and other post-production expenses (“gathering and transportation expense”) within the Company’s Condensed Consolidated Statements of Operations. In these scenarios below, the Company evaluates whether it is the principal or the agent in the transaction, which analysis includes considerations of product redelivery, take-in-kind rights and risk of loss. For those contracts where the Company has concluded that control of the product transfers at the tailgate of the plant, meaning that the Company is the principal and the ultimate third party purchaser is its customer, the Company recognizes revenue on a gross basis, with transportation, processing and gathering expenses presented within the Gathering and transportation line item on the Company’s Condensed Consolidated Statements of Operations. Alternatively, for those contracts where the Company has concluded control of the product transfers at or near the wellhead or inlet of the plant, meaning that the Company is the agent and the midstream processing company is the Company’s customer, the Company recognizes natural gas and NGL revenues based on the net amount of proceeds received from the midstream processing company. The Company has the following categories under which oil, natural gas and NGL revenue is generated: • The Company sells its crude oil and condensate production at the wellhead or further downstream at a contractually-specified delivery point. Revenue is recognized when control transfers to the customer based on contract terms, which reflects an agreed-upon index price, net of basis, quality and transportation differentials. Gathering and transportation fees incurred prior to control transfer are recorded within the Gathering and transportation line item on the Company’s Condensed Consolidated Statements of Operations, while gathering and transportation fees incurred subsequent to control transfer are recorded as a reduction of oil revenues. • The Company sells its liquids rich natural gas to a midstream processor at or near the wellhead. The midstream processor gathers and processes the liquids rich natural gas and remits the proceeds to the Company from the ultimate sale of the residue gas and NGLs to third parties. In such arrangements, the midstream processor obtains control of the product at the wellhead and is considered the customer. Proceeds received for the residue gas and NGLs from the midstream processor are reflected as natural gas and NGL revenue, respectively, and are recorded net of processing, gathering and transportation fees incurred by the midstream processor after control has transferred. • The Company sells its liquids rich natural gas to a midstream processor at the inlet to the midstream processing facility. The midstream processor gathers and processes the liquids rich natural gas and remits the proceeds to the Company from the ultimate sale of the residue gas and NGLs to third parties. In such arrangements, the midstream processor obtains control of the product at the inlet to the processing facility and is considered the customer. Gathering and transportation fees incurred by the Company to deliver its liquids rich natural gas to the inlet of the facility occurs prior to the transfer of control to the customer and are recognized within the Gathering and transportation line item on the Company’s Condensed Consolidated Statements of Operations. Proceeds received for the residue gas and NGLs from the midstream processor are reflected as natural gas and NGL revenue, respectively, and are recorded net of processing, gathering and transportation fees incurred by the midstream processor after control has transferred. • The Company has the option in certain midstream processing arrangements where liquids rich natural gas is delivered to the midstream processing facility, the midstream processor gathers and processes the liquids rich natural gas and then the processed residue gas and NGLs are redelivered to the Company in-kind at the tailgate of the processing facility. The Company sells its in-kind residue gas and NGLs to its customer at the tailgate of the processing facility. Gathering and transportation fees incurred prior to transfer of control at the tailgate of the processing facility are recognized within the Gathering, processing and transportation line item on the Company’s Condensed Consolidated Statements of Operations. Proceeds received for the residue gas and NGLs from the customer are reflected as natural gas and NGL revenue, respectively, and are recorded net of gathering and transportation fees incurred by the customer after control has transferred. The implementation of ASC 606 resulted in changes to the presentation of Revenues and Gathering and transportation on the Company’s Condensed Consolidated Statements of Operations, but it did not have any impact to net income (loss) or cash flows from operations. The impacts of the adoption of ASU 2014-09 for the three and six months ended June 30, 2019 , were as follows: Three Months Ended Six Months Ended June 30, 2019 June 30, 2019 As Reported Amounts Without Adoption of ASU 2014-09 Effect of Change As Reported Amounts Without Adoption of ASU 2014-09 Effect of Change (In thousands) Revenues: Oil sales $ 66,840 $ 66,681 $ 159 $ 132,693 $ 131,877 $ 816 Natural gas sales (649 ) (60 ) (589 ) 825 1,966 (1,141 ) Natural gas liquids sales 3,192 3,224 (32 ) 7,725 7,990 (265 ) Total revenues $ 69,383 $ 69,845 $ (462 ) $ 141,243 $ 141,833 $ (590 ) Operating expenses: Gathering and transportation $ 1,320 $ 1,782 $ (462 ) $ 3,681 $ 4,271 $ (590 ) Performance obligations The Company’s contractual performance obligations arise upon the production of hydrocarbons from wells in which the Company has an ownership interest. The performance obligations are considered satisfied upon control transferring to a customer at the wellhead, inlet, or tailgate of the midstream processor’s processing facility, or other contractually specified delivery point. For all commodity products, the Company records revenue in the month production is delivered to the customer. Settlement statements for certain natural gas and NGL sales may not be received for 30 to 90 days after the date production volumes are delivered and for oil, generally within 30 days after delivery has occurred. However, payment is unconditional once the performance obligations have been satisfied. At this time, the volume and price can be reasonably estimated and amounts due from customers are accrued in Accounts receivable, net in the Condensed Consolidated Balance Sheets. As of June 30, 2019 and December 31, 2018, such receivable balances were $25.3 million and $28.9 million , respectively, as disclosed in Note 4 - Accounts Receivable . The Company records any differences between its estimates and the actual amounts received for product sales in the month that payment is received from the purchaser. Historically, any identified differences between revenue estimates and actual revenue received have not been significant. For the three and six months ended June 30, 2019 , revenue recognized in the reporting period related to performance obligations satisfied in prior reporting periods was not material. Transaction price allocated to remaining performance obligations For the Company’s product sales that have a contract term greater than one year, the Company has utilized the practical expedient in ASC Topic 606 which states the Company is not required to disclose the transaction price allocated to the remaining performance obligations if the variable consideration is allocated entirely to a wholly unsatisfied performance obligation. Under these sales contracts, monthly sales of a product generally represent a separate performance obligation; therefore, future commodity volumes to be delivered and sold are wholly unsatisfied and disclosure of the transaction price allocated to such unsatisfied performance obligations is not required.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies and Recently Issued Accounting Standards (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The condensed consolidated financial results of the Company consist of the financial results of Rosehill and Rosehill Operating, its consolidated subsidiary. As of June 30, 2019 , the Company owns approximately 32.7% of the common units of Rosehill Operating (the “Rosehill Operating Common Units”) and Tema owns approximately 67.3% of the Rosehill Operating Common Units. The unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. It is suggested that these condensed financial statements be read in conjunction with the financial statements and the notes thereto included in the Company’s latest Annual Report on Form 10-K. The unaudited condensed consolidated financial statements reflect all normal and recurring adjustments that are, in the opinion of management, necessary for the fair presentation of the results of operations for the interim periods.
Variable Interest Entities	Variable Interest Entities Rosehill Operating is a variable interest entity. The Company determined that it is the primary beneficiary of Rosehill Operating as the Company is the sole managing member and has the power to direct the activities most significant to Rosehill Operating’s economic performance as well as the obligation to absorb losses and receive benefits that are potentially significant. The Company consolidated 100% of Rosehill Operating’s assets and liabilities and results of operations in the Company’s condensed consolidated financial statements. Although Tema had a larger ownership interest in Rosehill Operating, because it has disproportionately fewer voting rights, Tema is shown as a noncontrolling interest holder of Rosehill Operating.
Recently Issued Accounting Standards	Accounting Standards Adopted in 2019 Revenue Recognition. ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASC 606”), supersedes the revenue recognition requirements in Topic 605, Revenue Recognition , and industry-specific guidance in Subtopic 932-605, Extractive Activities-Oil and Gas-Revenue Recognition and requires an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration the entity expects to be entitled to in exchange for those goods or services. In May 2016, the FASB issued ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , as clarifying guidance to improve the operability and understandability of the implementation guidance on principal versus agent considerations. ASC 606 became effective for the Company on January 1, 2019, and the Company has elected to adopt it using the modified retrospective method. The Company has completed its review of the impact of ASC 606 on its significant contracts and determined that the Company was not required to record a cumulative effect adjustment to retained earnings. The implementation of ASC 606 did result in changes to the presentation of “Revenues” and “Gathering and transportation” on the Company’s Condensed Consolidated Statement of Operations, but there was no impact to net income. See Note 17 - Revenue from Contracts with Customers . Financial Assets and Financial Liabilities. In January 2016, the FASB issued ASU 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities . The pronouncement requires, among other things, public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset. For the Company, these changes became effective on January 1, 2019. In February 2018, the FASB issued ASU 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , which clarifies certain aspects of the guidance issued in ASU 2016-01 including: the ability to irrevocably elect to change the measurement approach for equity securities measured using the practical expedient (at cost plus or minus observable transactions less impairment) to a fair value method in accordance with Topic 820, Fair Value Measurement; clarification that if an observable transaction occurs for such securities, the adjustment is as of the observable transaction date; clarification that the prospective transition approach for equity securities without a readily determinable fair value is meant only for instances in which the practical expedient is elected; and various other clarifications. The adoption of ASU 2016-01 and ASU 2018-03 has been evaluated by the Company and the adoption does not have a significant impact on the Company’s condensed consolidated financial statements. Recently Issued Accounting Standards Not Yet Adopted Leases. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under current U.S. GAAP. In January 2018, the FASB issued ASU 2018-01, Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842 , which provides clarifying guidance regarding land easements and adds practical expedients. In July 2018, further amendments were issued under ASU 2018-10, Codification Improvements to Topic 842, Leases . In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements , which provides entities with an additional transition method in which an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. ASU 2016-02 and its related updates are effective for the Company for fiscal years beginning after December 15, 2019. The Company is currently evaluating the method of adoption and the impact of the adoption of this guidance on its condensed consolidated financial statements and disclosures. Financial Instruments – Credit Losses. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments requiring the measurement of all expected credit losses for financial assets, which include trade receivables, held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. The guidance in this ASU is effective for the Company for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021 with early adoption permitted for interim and annual periods beginning after December 15, 2018. The evaluation of this standard and its impact on the Company’s condensed consolidated financial statements and related disclosures is currently being assessed. Derivatives and Hedging. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities , which expands and refines hedge accounting for both financial and non-financial risk components, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. ASU 2017-12 is effective for the Company for fiscal years beginning after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of this guidance on its condensed consolidated financial statements. Fair Value Measurement Disclosures. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which removes, modifies and adds disclosure requirements on fair value measurements. ASU 2018-13 is effective for the Company for fiscal years beginning after December 15, 2019 and the Company is permitted to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. The Company is currently evaluating the impact of the adoption of this guidance on its disclosures.

Earning (Loss) Per Share (Table

Earning (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Schedule of Earnings (Loss) Per Share	The following table sets forth the calculation of basic and diluted weighted average shares outstanding and earnings (loss) per share for the indicated periods: Three Months Six Months Ended June 30, Ended June 30, 2019 2018 2019 2018 (In thousands, except per share data) Net income (loss) (numerator): Net income (loss) attributable to common stockholders of Rosehill Resources Inc. - basic $ 11,188 $ 9,199 $ (26,789 ) $ 7,858 Add: Dividends on Series A Preferred Stock 2,027 — — — Add: Net loss attributable to the noncontrolling interest, net of taxes — (20,898 ) — (33,122 ) Net income (loss) attributable to common stockholders of Rosehill Resources Inc. - diluted $ 13,215 $ (11,699 ) $ (26,789 ) $ (25,264 ) Weighted average shares (denominator): Weighted average shares – basic 14,382 6,430 14,108 6,327 Add: Dilutive effects of equity awards 1,339 — — — Add: Dilutive effects of Series A Preferred Stock 8,841 — — — Add: Dilutive effects of Class B Common Stock — 29,808 — 29,808 Weighted average shares – diluted 24,562 36,238 14,108 36,135 Basic earnings (loss) per share $ 0.78 $ 1.43 $ (1.90 ) $ 1.24 Diluted earnings (loss) per share $ 0.54 $ (0.32 ) $ (1.90 ) $ (0.70 )

Accounts Receivable (Tables)

Accounts Receivable (Tables)	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Schedule of Accounts Receivable	Accounts receivable is comprised of the following: June 30, 2019 December 31, 2018 (In thousands) Revenue receivable $ 25,342 $ 28,876 Realized derivative receivable 741 2,229 Joint interest billings 80 640 Other 647 515 Accounts receivable $ 26,810 $ 32,260

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Assets and Liabilities	The following tables summarize the location and fair value amounts of all the Company’s derivative instruments in the Condensed Consolidated Balance Sheets, as well as the gross recognized derivative assets, liabilities and offset amounts in the Condensed Consolidated Balance Sheets: June 30, 2019 Gross Fair Value Gross Amounts Offset (1) Net Recognized Fair Value (In thousands) Assets Commodity derivatives - current $ 26,289 $ (22,937 ) $ 3,352 Commodity derivatives - non-current 98,379 (68,915 ) 29,464 Total assets $ 124,668 $ (91,852 ) $ 32,816 Liabilities Commodity derivatives - current $ (34,692 ) $ 22,937 $ (11,755 ) Commodity derivatives - non-current (69,869 ) 68,915 (954 ) Series B Preferred Stock bifurcated derivative - non-current (673 ) — (673 ) Total liabilities $ (105,234 ) $ 91,852 $ (13,382 ) (1) The Company has agreements in place with all of its counterparties that allow for the financial right of offset for derivative assets and liabilities. December 31, 2018 Gross Fair Value Gross Amounts Offset (1) Net Recognized Fair Value (In thousands) Assets Commodity derivatives - current $ 46,972 $ (16,153 ) $ 30,819 Commodity derivatives - non-current 88,008 (29,694 ) 58,314 Total assets $ 134,980 $ (45,847 ) $ 89,133 Liabilities Commodity derivatives - current $ (16,153 ) $ 16,153 $ — Commodity derivatives - non-current (29,694 ) 29,694 — Series B Preferred Stock bifurcated derivative - non-current (696 ) — (696 ) Total liabilities $ (46,543 ) $ 45,847 $ (696 ) (1) The Company has agreements in place with all of its counterparties that allow for the financial right of offset for derivative assets and liabilities.
Schedule of Derivative Instruments	As of June 30, 2019 , the open commodity derivative positions with respect to future production were as follows: 2019 2020 2021 2022 Commodity derivative swaps Oil: Notional volume (Bbls) (1)(2) 1,332,000 1,960,000 — — Weighted average fixed price ($/Bbl) $ 53.59 $ 60.09 $ — $ — Natural gas: Notional volume (MMBtu) 1,682,646 1,970,368 1,615,792 1,276,142 Weighted average fixed price ($/MMbtu) $ 2.87 $ 2.75 $ 2.79 $ 2.85 Ethane: Notional volume (Gallons) 7,027,524 — — — Weighted average fixed price ($/Gallons) $ 0.28 $ — $ — $ — Propane: Notional volume (Gallons) 4,685,058 — — — Weighted average fixed price ($/Gallons) $ 0.79 $ — $ — $ — Pentanes: Notional volume (Gallons) 1,561,896 — — — Weighted average fixed price ($/Gallons) $ 1.47 $ — $ — $ — Commodity derivative two-way collars Oil: Notional volume (Bbls) 210,000 — — — Weighted average ceiling price ($/Bbl) $ 60.03 $ — $ — $ — Weighted average floor price ($/Bbl) $ 53.14 $ — $ — $ — Commodity derivative three-way collars Oil: Notional volume (Bbls) 1,095,258 3,294,000 4,200,000 2,000,000 Weighted average ceiling price ($/Bbl) $ 65.86 $ 70.29 $ 60.40 $ 61.45 Weighted average floor price ($/Bbl) $ 60.61 $ 57.50 $ 54.49 $ 55.00 Weighted average sold put option price ($/Bbl) $ 45.57 $ 47.50 $ 45.51 $ 45.00 Crude oil basis swaps Midland / Cushing: Notional volume (Bbls) 2,637,258 5,254,000 3,160,000 2,100,000 Weighted average fixed price ($/Bbl) $ (4.65 ) $ (0.83 ) $ 0.48 $ 0.54 Natural gas basis swaps EP Permian: Notional volume (MMBtu) 1,711,062 2,096,160 — — Weighted average fixed price ($/MMBtu) $ (1.13 ) $ (1.03 ) $ — $ — (1) During the second quarter of 2019, the Company entered into commodity derivative swaps where it bought 2,160,000 barrels of crude oil at a weighted average fixed price of $50.48 per barrel to offset commodity derivative swaps it previously sold of 2,160,000 barrels of crude oil at a weighted average fixed price of $61.21 per barrel. (2) During the second quarter of 2019, the Company entered into commodity derivative swaps where it bought 1,100,000 barrels of crude oil at a weighted average fixed price of $50.55 per barrel to offset commodity derivative swaps it previously sold of 1,100,000 barrels of crude oil at a weighted average fixed price of $58.42 per barrel.
Schedule of Derivative Instruments in Condensed Consolidated Statements of Operations	For the three and six months ended June 30, 2019 and 2018 , the effect of the derivative activity on the Company’s Condensed Consolidated Statements of Operations was as follows: Three Months Six Months Ended June 30, Ended June 30, 2019 2018 2019 2018 (In thousands) Realized gain (loss) on derivatives Commodity derivative options $ (165 ) $ — $ 1,335 $ 19 Commodity derivative swaps (5,181 ) (9,151 ) (7,704 ) (12,213 ) Total realized gain (loss) on derivatives $ (5,346 ) $ (9,151 ) $ (6,369 ) $ (12,194 ) Unrealized gain (loss) on derivatives Commodity derivative options $ 3,217 $ 1,795 $ (22,349 ) $ (14,165 ) Commodity derivative swaps 30,506 (12,598 ) (47,476 ) (14,880 ) Total 33,723 (10,803 ) (69,825 ) (29,045 ) Series B Preferred Stock bifurcated derivative (58 ) 57 23 157 Total unrealized gain (loss) on derivatives $ 33,665 $ (10,746 ) $ (69,802 ) $ (28,888 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets and Liabilities	The tables below, set forth by level within the fair value hierarchy, represent the net components of the assets and liabilities that were measured at fair value on a recurring basis as of June 30, 2019 and December 31, 2018 . These net balances are intended solely to provide information on sources of inputs to fair value and proportions of fair value involving objective versus subjective valuations and do not represent either the actual credit exposure or net economic exposure. June 30, 2019 Level 1 Level 2 Level 3 Total (In thousands) Derivative assets Commodity derivative assets - current $ — $ 3,352 $ — $ 3,352 Commodity derivative assets - non-current — 29,464 — 29,464 Total derivative assets $ — $ 32,816 $ — $ 32,816 Derivative liabilities Commodity derivative liabilities - current $ — $ (11,755 ) $ — $ (11,755 ) Commodity derivative liabilities - non-current — (954 ) — (954 ) Series B Preferred Stock bifurcated derivative - non-current — — (673 ) (673 ) Total derivative liabilities $ — $ (12,709 ) $ (673 ) $ (13,382 ) December 31, 2018 Level 1 Level 2 Level 3 Total (In thousands) Derivative assets Commodity derivative assets - current $ — $ 30,819 $ — $ 30,819 Commodity derivative assets - non-current — 58,314 — 58,314 Total derivative assets $ — $ 89,133 $ — $ 89,133 Derivative liabilities Series B Preferred Stock bifurcated derivative - non-current $ — $ — $ (696 ) $ (696 ) Total derivative liabilities $ — $ — $ (696 ) $ (696 ) The financial instruments measured at fair value on a recurring basis consist of the following: June 30, December 31, 2019 2018 (In thousands) Derivative assets Derivative assets - current $ 3,352 $ 30,819 Derivative assets - non-current 29,464 58,314 Total derivative assets 32,816 89,133 Derivative liabilities Derivative liabilities - current (11,755 ) — Derivative liabilities - non-current (1,627 ) (696 ) Total derivative liabilities (13,382 ) (696 ) Total derivative assets (liabilities), net $ 19,434 $ 88,437
Schedule of Changes in Fair Value of Level 3 Liabilities	The table below sets forth a summary of changes in the fair value of the Company’s level 3 liabilities for the six months ended June 30, 2019 . Beginning balance $ 696 (Gains) losses reported in earnings (23 ) Ending balance $ 673

Property and equipment (Tables)

Property and equipment (Tables)	6 Months Ended
	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment is comprised of the following: June 30, December 31, 2019 2018 (In thousands) Proved oil and natural gas properties $ 910,705 $ 777,558 Unproved oil and natural gas properties 119,225 121,929 Land 1,575 1,575 Less: accumulated DD&A and impairment (299,869 ) (234,265 ) Total oil and natural gas properties (successful efforts), net 731,636 666,797 Other property and equipment 6,094 6,059 Less: accumulated DD&A (3,843 ) (3,467 ) Total other property and equipment 2,251 2,592 Total property and equipment, net $ 733,887 $ 669,389

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	6 Months Ended
	Jun. 30, 2019
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Asset Retirement Obligations	The change in asset retirement obligations for the six months ended June 30, 2019 is set forth below (in thousands): Asset retirement obligations, beginning of period $ 13,524 Additional liabilities incurred 88 Dispositions (186 ) Accretion expense 385 Liabilities settled upon plugging and abandoning wells (8 ) Revision of estimates (94 ) Asset retirement obligations, end of period $ 13,709

Accrued Liabilities and Other (

Accrued Liabilities and Other (Tables)	6 Months Ended
	Jun. 30, 2019
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities and Other	Accrued liabilities and other is comprised of the following as of the respective dates: June 30, December 31, 2019 2018 (In thousands) Accrued payroll $ 2,301 $ 3,764 Royalties payable 8,175 11,511 Accrued lease operating expense 4,849 3,992 Preferred Stock dividends payable 5,936 3,362 Accrued interest expense 2,661 925 Accrued production taxes — 1,234 Accrued ad valorem taxes 1,743 1,066 Other 1,905 1,481 Total accrued liabilities and other $ 27,570 $ 27,335

Long-term debt, net (Tables)

Long-term debt, net (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	The Company’s long-term debt is comprised of the following: June 30, December 31, 2019 2018 (In thousands) Second Lien Notes $ 100,000 $ 100,000 Revolving credit facility 240,000 194,000 Total debt 340,000 294,000 Debt issuance cost on Second Lien Notes, net 2,878 3,211 Discount on Second Lien Notes, net 2,233 2,491 Total debt issuance cost and discounts 5,111 5,702 Total long-term debt, net $ 334,889 $ 288,298
Schedule of Deferred Financing Costs and Debt Discounts	The following table summarizes the Company’s deferred financing costs and debt discounts: June 30, December 31, 2019 2018 (In thousands) Revolving credit facility Debt issuance costs $ 3,026 $ 2,368 Accumulated amortization of debt issuance costs (677 ) (361 ) Net deferred costs - Revolving credit facility $ 2,349 $ 2,007 Second Lien Notes Debt discount $ 3,000 $ 3,000 Accumulated amortization of debt discount (767 ) (509 ) Debt issuance costs 3,868 3,868 Accumulated amortization of debt issuance costs (990 ) (657 ) Net deferred costs - Second Lien Notes $ 5,111 $ 5,702 Total deferred financing costs and debt discount, net $ 7,460 $ 7,709

10% Series B Redeemable Prefe_2

10% Series B Redeemable Preferred Stock (Tables)	6 Months Ended
	Jun. 30, 2019
Temporary Equity Disclosure [Abstract]
Schedule of Mezzanine Equity for the Series B Preferred Stock	The Company reflected the following activity in mezzanine equity for the Series B Preferred Stock for the six months ended June 30, 2019 : Series B Preferred Shares Series B Preferred Stock Value Guaranteed Return Total (In thousands, except share data) Total Series B Preferred Stock at December 31, 2018 156,746 $ 147,603 $ 7,508 $ 155,111 Return (16% IRR) — — 10,930 10,930 Dividends declared and paid or payable in cash — — (7,774 ) (7,774 ) Accretion of discount - deemed dividend — 741 — 741 Total Series B Preferred Stock at June 30, 2019 156,746 $ 148,344 $ 10,664 $ 159,008

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Schedule of Dividends	The table below summarizes the Series A Preferred Stock dividends reflected in the Company’s Condensed Consolidated Statements of Operations: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 (In thousands) Series A Preferred Stock paid-in-kind $ — $ 984 $ — $ 1,949 Series A Preferred Stock paid or payable in cash 2,027 984 4,033 1,948 Series A Preferred Stock dividends $ 2,027 $ 1,968 $ 4,033 $ 3,897

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Nonvested Share Activity	The following table sets forth stock-settled time-based restricted stock unit transactions for the six months ended June 30, 2019 : Restricted Stock Units Weighted-Average Grant Date Fair Value Nonvested - December 31, 2018 713,558 $ 8.13 Granted 1,194,624 3.25 Vested (330,590 ) 8.44 Forfeited (141,344 ) 5.57 Nonvested - June 30, 2019 1,436,248 $ 4.27 The following table sets forth the restricted stock transactions for the six months ended June 30, 2019 : Restricted Stock Weighted-Average Grant Date Fair Value Nonvested - December 31, 2018 246,653 $ 6.24 Granted 428,984 3.12 Vested (114,360 ) 7.25 Forfeited — — Nonvested - June 30, 2019 561,277 $ 3.66 The following table sets forth market based performance share unit transactions for the six months ended June 30, 2019 : Performance Restricted Stock Units Weighted-Average Grant Date Fair Value Nonvested - December 31, 2018 284,415 $ 8.99 Granted 845,680 4.17 Vested — — Forfeited (148,206 ) 6.80 Nonvested - June 30, 2019 981,889 $ 5.17 The following table sets forth cash-settled restricted stock unit transactions for the six months ended June 30, 2019 : Cash-Settled Restricted Stock Units Weighted-Average Grant Date Fair Value Nonvested - December 31, 2018 78,224 $ 6.63 Granted 409,390 3.12 Vested (28,123 ) 6.63 Forfeited (15,649 ) 4.48 Nonvested - June 30, 2019 443,842 $ 3.47
Schedule of Assumptions Used to Value the Market Based Performance Awards	The following weighted-average assumptions were used to value the market based performance awards: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Expected volatility 71.4 % — % 68.9 % 89.5 % Risk-free interest rate 2.2 % — % 2.2 % 2.4 % Dividend yield — % — % — % — % Expected life (years) 1.63 — 2.49 2.77

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Impacts of ASU 2014-09 Adoption	The impacts of the adoption of ASU 2014-09 for the three and six months ended June 30, 2019 , were as follows: Three Months Ended Six Months Ended June 30, 2019 June 30, 2019 As Reported Amounts Without Adoption of ASU 2014-09 Effect of Change As Reported Amounts Without Adoption of ASU 2014-09 Effect of Change (In thousands) Revenues: Oil sales $ 66,840 $ 66,681 $ 159 $ 132,693 $ 131,877 $ 816 Natural gas sales (649 ) (60 ) (589 ) 825 1,966 (1,141 ) Natural gas liquids sales 3,192 3,224 (32 ) 7,725 7,990 (265 ) Total revenues $ 69,383 $ 69,845 $ (462 ) $ 141,243 $ 141,833 $ (590 ) Operating expenses: Gathering and transportation $ 1,320 $ 1,782 $ (462 ) $ 3,681 $ 4,271 $ (590 )

Organization and Basis of Pre_2

Organization and Basis of Presentation (Details) - Issued to Tema in connection with the Transaction	6 Months Ended
	Jun. 30, 2019
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Ownership in variable interest entity	32.70%
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Ownership in variable interest entity	67.30%

Earning (Loss) Per Share - Sche

Earning (Loss) Per Share - Schedule of Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net income (loss) (numerator):
Net income (loss) attributable to common stockholders of Rosehill Resources Inc. - basic	$ 11,188	$ 9,199	$ (26,789)	$ 7,858
Add: Dividends on Series A Preferred Stock	2,027	0	0	0
Add: Net loss attributable to the noncontrolling interest, net of taxes	0	(20,898)	0	(33,122)
Net income (loss) attributable to common stockholders of Rosehill Resources Inc. - diluted	$ 13,215	$ (11,699)	$ (26,789)	$ (25,264)
Weighted average shares (denominator):
Weighted average shares - basic (shares)	14,382	6,430	14,108	6,327
Add: Dilutive effects of equity awards (shares)	1,339	0	0	0
Add: Dilutive effects of Series A Preferred Stock (shares)	8,841	0	0	0
Add: Dilutive effects of Class B Common Stock (shares)	0	29,808	0	29,808
Weighted average shares – diluted (shares)	24,562	36,238	14,108	36,135
Basic earnings (loss) per share (USD per share)	$ 0.78	$ 1.43	$ (1.90)	$ 1.24
Diluted earnings (loss) per share (USD per share)	$ 0.54	$ (0.32)	$ (1.90)	$ (0.70)

Earning (Loss) Per Share - Narr

Earning (Loss) Per Share - Narrative (Details) - shares shares in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Class B Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	29.8		29.8
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	25.6	25.6	25.6	25.6
Series A Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)		8.6	8.8	8.5
Long-Term Incentive Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	1.4	0.2	2.4	0.1
Series A Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Series A preferred stock, dividend rate			8.00%		8.00%

Accounts Receivable (Details)

Accounts Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts Receivable
Accounts receivable	$ 26,810	$ 32,260
Revenue receivable
Accounts Receivable
Accounts receivable	25,342	28,876
Realized derivative receivable
Accounts Receivable
Accounts receivable	741	2,229
Joint interest billings
Accounts Receivable
Accounts receivable	80	640
Other
Accounts Receivable
Accounts receivable	$ 647	$ 515

Derivative Instruments - Assets

Derivative Instruments - Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 08, 2017	Jun. 30, 2019	Dec. 31, 2018
Assets
Commodity derivatives - current		$ 3,352	$ 30,819
Commodity derivatives - non-current		29,464	58,314
Liabilities
Commodity derivatives - current		(11,755)	0
Commodity derivatives - non-current		(1,627)	(696)
Total liabilities		(13,382)	(696)
Gross Fair Value
Assets
Commodity derivatives - current		26,289	46,972
Commodity derivatives - non-current		98,379	88,008
Total assets		124,668	134,980
Liabilities
Commodity derivatives - current		(34,692)	(16,153)
Commodity derivatives - non-current		(69,869)	(29,694)
Series B Preferred Stock bifurcated derivative - non-current		(673)	(696)
Total liabilities		(105,234)	(46,543)
Gross Amounts Offset
Assets
Commodity derivatives - current		(22,937)	(16,153)
Commodity derivatives - non-current		(68,915)	(29,694)
Total assets		(91,852)	(45,847)
Liabilities
Commodity derivatives - current		22,937	16,153
Commodity derivatives - non-current		68,915	29,694
Series B Preferred Stock bifurcated derivative - non-current		0	0
Total liabilities		91,852	45,847
Net Recognized Fair Value
Assets
Commodity derivatives - current		3,352	30,819
Commodity derivatives - non-current		29,464	58,314
Total assets		32,816	89,133
Liabilities
Commodity derivatives - current		(11,755)	0
Commodity derivatives - non-current		(954)	0
Series B Preferred Stock bifurcated derivative - non-current		(673)	(696)
Total liabilities		$ (13,382)	$ (696)
Series B Preferred Stock
Derivative [Line Items]
Series B preferred stock, dividend rate	10.00%	10.00%	10.00%

Derivative Instruments - Deriva

Derivative Instruments - Derivative Positions (Details)	3 Months Ended	12 Months Ended
	Jun. 30, 2019$ / bblbbl	Dec. 31, 2022MMBTU$ / MMBTU$ / gal$ / bblbblgal	Dec. 31, 2021MMBTU$ / MMBTU$ / gal$ / bblbblgal	Dec. 31, 2020MMBTU$ / MMBTU$ / gal$ / bblbblgal	Dec. 31, 2019MMBTU$ / MMBTU$ / gal$ / bblbblgal	Mar. 31, 2019$ / bbl
Forecast | Oil
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | bbl		0	0	1,960,000	1,332,000
Weighted average fixed price ($/unit)		0	0	60.09	53.59
Forecast | Natural gas
Derivative Instruments, Gain (Loss) [Line Items]
Weighted average fixed price ($/unit) | $ / MMBTU		2.85	2.79	2.75	2.87
Notional volume (MMBtu) | MMBTU		1,276,142	1,615,792	1,970,368	1,682,646
Forecast | Ethane
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | gal		0	0	0	7,027,524
Weighted average fixed price ($/unit) | $ / gal		0	0	0	0.28
Forecast | Propane
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | gal		0	0	0	4,685,058
Weighted average fixed price ($/unit) | $ / gal		0	0	0	0.79
Forecast | Pentanes
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | gal		0	0	0	1,561,896
Weighted average fixed price ($/unit) | $ / gal		0	0	0	1.47
Forecast | Commodity derivative two-way collars
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | bbl		0	0	0	210,000
Weighted average ceiling price ($/Bbl)		0	0	0	60.03
Weighted average floor price ($/Bbl)		0	0	0	53.14
Forecast | Commodity derivative three-way collars
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | bbl		2,000,000	4,200,000	3,294,000	1,095,258
Weighted average ceiling price ($/Bbl)		61.45	60.40	70.29	65.86
Weighted average floor price ($/Bbl)		55	54.49	57.50	60.61
Weighted average sold put option price ($/Bbl)		45	45.51	47.50	45.57
Forecast | Crude oil basis swaps
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | bbl		2,100,000	3,160,000	5,254,000	2,637,258
Weighted average fixed price ($/unit)		0.54	0.48	0.83	4.65
Forecast | Natural gas basis swaps
Derivative Instruments, Gain (Loss) [Line Items]
Weighted average fixed price ($/unit) | $ / MMBTU		0	0	1.03	1.13
Notional volume (MMBtu) | MMBTU		0	0	2,096,160	1,711,062
Transaction One | Oil
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | bbl	2,160,000
Weighted average fixed price ($/unit)	50.48					61.21
Transaction Two | Oil
Derivative Instruments, Gain (Loss) [Line Items]
Notional volume | bbl	1,100,000
Weighted average fixed price ($/unit)	50.55					58.42

Derivative Instruments - Gain (

Derivative Instruments - Gain (Loss) on Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Realized gain (loss) on derivatives
Total realized gain (loss) on derivatives	$ (5,346)	$ (9,151)	$ (6,369)	$ (12,194)
Unrealized gain (loss) on derivatives
Unrealized gain (loss) on derivatives	33,723	(10,803)	(69,825)	(29,045)
Total unrealized gain (loss) on derivatives	33,665	(10,746)	(69,802)	(28,888)
Commodity derivative options
Realized gain (loss) on derivatives
Realized gain (loss) on derivatives	(165)	0	1,335	19
Unrealized gain (loss) on derivatives
Unrealized gain (loss) on derivatives	3,217	1,795	(22,349)	(14,165)
Commodity derivative swaps
Realized gain (loss) on derivatives
Realized gain (loss) on derivatives	(5,181)	(9,151)	(7,704)	(12,213)
Unrealized gain (loss) on derivatives
Unrealized gain (loss) on derivatives	30,506	(12,598)	(47,476)	(14,880)
Series B Preferred Stock bifurcated derivative
Unrealized gain (loss) on derivatives
Total unrealized gain (loss) on derivatives	$ (58)	$ 57	$ 23	$ 157

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Derivative assets
Derivative assets - current	$ 3,352	$ 30,819
Derivative assets - non-current	29,464	58,314
Total derivative assets	32,816	89,133
Derivative liabilities
Derivative liabilities - current	(11,755)	0
Derivative liabilities - non-current	(1,627)	(696)
Total liabilities	(13,382)	(696)
Total derivative assets (liabilities), net	19,434	88,437
Level 1
Derivative assets
Total derivative assets	0	0
Derivative liabilities
Derivative liabilities - non-current		0
Total liabilities	0
Level 2
Derivative assets
Total derivative assets	32,816	89,133
Derivative liabilities
Derivative liabilities - non-current		0
Total liabilities	(12,709)
Level 3
Derivative assets
Total derivative assets	0	0
Derivative liabilities
Derivative liabilities - non-current		(696)
Total liabilities	(673)
Commodity Derivative
Derivative assets
Derivative assets - current	3,352	30,819
Derivative assets - non-current	29,464	58,314
Derivative liabilities
Derivative liabilities - current	(11,755)
Derivative liabilities - non-current	(954)
Commodity Derivative | Level 1
Derivative assets
Derivative assets - current	0	0
Derivative assets - non-current	0	0
Derivative liabilities
Derivative liabilities - current	0
Derivative liabilities - non-current	0
Commodity Derivative | Level 2
Derivative assets
Derivative assets - current	3,352	30,819
Derivative assets - non-current	29,464	58,314
Derivative liabilities
Derivative liabilities - current	(11,755)
Derivative liabilities - non-current	(954)
Commodity Derivative | Level 3
Derivative assets
Derivative assets - current	0	0
Derivative assets - non-current	0	0
Derivative liabilities
Derivative liabilities - current	0
Derivative liabilities - non-current	0
Series B Preferred Stock Bifurcated Derivative
Derivative liabilities
Derivative liabilities - non-current	(673)	(696)
Series B Preferred Stock Bifurcated Derivative | Level 1
Derivative liabilities
Derivative liabilities - non-current	0	0
Series B Preferred Stock Bifurcated Derivative | Level 2
Derivative liabilities
Derivative liabilities - non-current	0	0
Series B Preferred Stock Bifurcated Derivative | Level 3
Derivative liabilities
Derivative liabilities - non-current	$ (673)	$ (696)

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	Dec. 08, 2017	Jun. 30, 2019	Dec. 31, 2018
Second Lien Notes | Senior Notes
Debt Instrument [Line Items]
Interest rate		10.00%
Series B Preferred Stock
Debt Instrument [Line Items]
Series B preferred stock, dividend rate	10.00%	10.00%	10.00%
Level 2 | Second Lien Notes | Senior Notes
Debt Instrument [Line Items]
Fair value of Second Lien Notes		$ 95.2	$ 95.2

Fair Value Measurements - Sch_2

Fair Value Measurements - Schedule of Changes in Fair Value of Level 3 Liabilities (Details) - Level 3 $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 696
(Gains) losses reported in earnings	(23)
Ending balance	$ 673

Property and equipment - Schedu

Property and equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total property and equipment, net	$ 733,887	$ 669,389
Total oil and natural gas properties (successful efforts), net
Property, Plant and Equipment [Line Items]
Less: accumulated DD&A and impairment	(299,869)	(234,265)
Total property and equipment, net	731,636	666,797
Proved oil and natural gas properties
Property, Plant and Equipment [Line Items]
Property and equipment, gross	910,705	777,558
Unproved oil and natural gas properties
Property, Plant and Equipment [Line Items]
Property and equipment, gross	119,225	121,929
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,575	1,575
Other property and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,094	6,059
Less: accumulated DD&A and impairment	(3,843)	(3,467)
Total property and equipment, net	$ 2,251	$ 2,592

Property and equipment - Narrat

Property and equipment - Narrative (Details)	Apr. 04, 2019USD ($)	Mar. 26, 2019USD ($)	Feb. 27, 2019USD ($)awell	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Property, Plant and Equipment [Line Items]
DD&A related to oil and natural gas properties				$ 32,300,000	$ 36,200,000	$ 67,800,000	$ 56,700,000
Depreciation and amortization expense				32,661,000	36,506,000	68,625,000	57,315,000
Capitalized costs included in proved oil and natural gas properties not subject to DD&A						60,500,000		$ 87,100,000
Proceeds received - Tatanka Asset sale		$ 22,000,000				22,000,000	0
Closing adjustment period	120 days
Gain on divestiture	$ 11,100,000			11,123,000	(163,000)	11,114,000	(296,000)
Other property and equipment
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense				$ 200,000	$ 200,000	$ 400,000	$ 300,000
Exchange and Farm-in Agreement
Property, Plant and Equipment [Line Items]
Acres previously received (acres) | a			384
Area of land exchanged (acres) | a			389
Gain (loss) on exchange			$ 0
Area of land received subject to obligation (acres) | a			2,000
Drilling and completion obligation, number of wells (up to) | well			7
Drilling and completion costs obligation percentage			25.00%

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Asset retirement obligations, beginning of period	$ 13,524
Additional liabilities incurred	88
Dispositions	(186)
Accretion expense	385
Liabilities settled upon plugging and abandoning wells	(8)
Revision of estimates	(94)
Asset retirement obligations, end of period	$ 13,709

Accrued Liabilities and Other_2

Accrued Liabilities and Other (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accrued payroll	$ 2,301	$ 3,764
Royalties payable	8,175	11,511
Accrued lease operating expense	4,849	3,992
Preferred Stock dividends payable	5,936	3,362
Accrued interest expense	2,661	925
Accrued production taxes	0	1,234
Accrued ad valorem taxes	1,743	1,066
Other	1,905	1,481
Total accrued liabilities and other	$ 27,570	$ 27,335

Long-term debt, net - Schedule

Long-term debt, net - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total debt	$ 340,000	$ 294,000
Debt issuance cost on Second Lien Notes, net	2,878	3,211
Discount on Second Lien Notes, net	2,233	2,491
Total debt issuance cost and discounts	5,111	5,702
Total long-term debt, net	334,889	288,298
Revolving credit facility | Line of Credit
Debt Instrument [Line Items]
Total debt	240,000	194,000
Second Lien Notes | Senior Notes
Debt Instrument [Line Items]
Total debt	$ 100,000	$ 100,000

Long-term debt, net - Narrative

Long-term debt, net - Narrative (Details)	Mar. 28, 2018USD ($)redetermination	Dec. 08, 2017USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Dec. 08, 2021	Dec. 08, 2020	Dec. 31, 2018USD ($)
Line of Credit Facility [Line Items]
Number of available interim unscheduled redeterminations | redetermination	1
Consecutive semiannual redeterminations | redetermination	2
Total debt			$ 340,000,000		$ 340,000,000				$ 294,000,000
Amortized debt issuance costs and discounts			$ 500,000	$ 400,000	$ 900,000	$ 1,300,000
Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Weighted-average interest rate (as a percent)			5.20%		5.20%
Credit facility - maximum borrowing capacity	$ 500,000,000
Credit facility - borrowing base			$ 300,000,000		$ 300,000,000
Total debt			$ 240,000,000		$ 240,000,000
Credit Agreement | Rosehill Operating | Revolving Credit Facility
Line of Credit Facility [Line Items]
Working capital ratio, minimum			1		1
Leverage ratio maximum			4		4
Minimum | Base Rate | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Minimum | London Interbank Offered Rate (LIBOR) | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	2.00%
Maximum | Base Rate | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	2.00%
Maximum | London Interbank Offered Rate (LIBOR) | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	3.00%
Second Lien Notes | Senior Notes
Line of Credit Facility [Line Items]
Total debt			$ 100,000,000		$ 100,000,000				$ 100,000,000
Interest rate			10.00%		10.00%
Second Lien Notes | Senior Notes | Rosehill Operating
Line of Credit Facility [Line Items]
Leverage ratio maximum		4
Aggregate principal amount		$ 100,000,000
Interest rate		10.00%
Redemption price (as a percent)		101.00%
Second Lien Notes | Senior Notes | Forecast | Rosehill Operating
Line of Credit Facility [Line Items]
Redemption price (as a percent)							101.50%	103.00%
Series B Preferred Stock | Credit Agreement | Rosehill Operating
Line of Credit Facility [Line Items]
Working capital ratio, minimum			2.5		2.5
Leverage ratio maximum			4		4

Long-term debt, net - Schedul_2

Long-term debt, net - Schedule of Deferred Financing Costs and Debt Discounts (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Revolving credit facility
Debt issuance costs	$ 3,026	$ 2,368
Accumulated amortization of debt issuance costs	(677)	(361)
Net deferred costs - Revolving credit facility	2,349	2,007
Second Lien Notes
Debt discount	3,000	3,000
Accumulated amortization of debt discount	(767)	(509)
Debt issuance costs	3,868	3,868
Accumulated amortization of debt issuance costs	(990)	(657)
Total debt issuance cost and discounts	5,111	5,702
Total deferred financing costs and debt discount, net	$ 7,460	$ 7,709

10% Series B Redeemable Prefe_3

10% Series B Redeemable Preferred Stock - Narrative (Details) - Series B Preferred Stock - USD ($) $ / shares in Units, $ in Millions	Dec. 09, 2019	Dec. 08, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Dec. 31, 2018	Dec. 08, 2019	Dec. 08, 2018
Class of Stock [Line Items]
Temporary equity, stock issued (shares)		150,000
Series B preferred stock, dividend rate		10.00%			10.00%	10.00%
Temporary equity, par value (USD per share)		$ 0.0001	$ 0.0001		$ 0.0001	$ 0.0001
Principal amount of temporary equity		$ 150
Transactions costs and up-front fees		$ 10
Temporary equity, liquidation preference (USD per share)		$ 1,000	1,000		$ 1,000	$ 1,000		$ 1,250
Required internal rate of return (as a percent)					16.00%
Dividends declared on preferred stock (USD per share)			$ 24.93	$ 24.66
Maximum
Class of Stock [Line Items]
Dividend paid out in stock (as a percent)		40.00%
Forecast
Class of Stock [Line Items]
Temporary equity, liquidation preference (USD per share)	$ 1,500						$ 1,350
Required internal rate of return (as a percent)	16.00%

10% Series B Redeemable Prefe_4

10% Series B Redeemable Preferred Stock - Schedule of Mezzanine Equity for the Series B Preferred Stock (Details) - Series B Preferred Stock - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance at the beginning of period, Temporary equity, stock outstanding (shares)	156,746
Balance at the beginning of period, Temporary equity, carrying amount before guaranteed return	$ 147,603
Balance at the beginning of period, Temporary equity, Guaranteed Return	7,508
Balance at the beginning of period, Temporary equity, Total	155,111
Return (16% IRR)	10,930
Dividends declared and paid or payable in cash	(7,774)
Accretion of discount - deemed dividend	$ 741	$ 631
Balance at the end of period, Temporary equity, stock outstanding (shares)	156,746
Balance at the end of period, Temporary equity, carrying amount before guaranteed return	$ 148,344
Balance at the end of period, Temporary equity, Guaranteed Return	10,664
Balance at the end of period, Temporary equity, Total	$ 159,008
Required internal rate of return	16.00%

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Income Tax Contingency [Line Items]
Income tax expense (benefit)	$ 1,517,000	$ (15,210,000)	$ 4,823,000	$ (17,400,000)
Effective tax rate (as a percent)	3.00%	232.00%	9.00%	106.00%
Operating loss carryforwards	$ 38,100,000		$ 38,100,000
Valuation allowance	$ 0		$ 0
Tax Receivable Agreement | Issued to Tema in connection with the Transaction
Income Tax Contingency [Line Items]
Payment of net cash savings (as a percent)	90.00%
Cash distribution	$ 35,000,000
Warrants issued (shares)	4,000,000		4,000,000
Deferred tax liabilities					$ 3,500,000
Payment of estimated future cash tax savings (as a percent)			90.00%

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details)	Apr. 27, 2017shares	Jun. 30, 2019trading_day$ / sharesshares	Jun. 30, 2018$ / shares	Jun. 30, 2019$ / sharesshares	Dec. 31, 2018$ / shares
Class of Stock [Line Items]
Warrants term		5 years		5 years
Issued to Tema in connection with the Transaction
Class of Stock [Line Items]
Warrants exercisable (shares)	4,000,000
Sponsor | Early Bird Capital Inc. | Private Placement Warrants
Class of Stock [Line Items]
Securities called by warrant (shares)		8,408,838		8,408,838
Warrant
Class of Stock [Line Items]
Securities called by warrant (shares)		588,276		588,276
Warrants outstanding (shares)		25,594,158		25,594,158
Class of warrant redemption threshold trading days | trading_day		20
Period of class of warrant redemption threshold trading days | trading_day		30
Warrant | IPO
Class of Stock [Line Items]
Securities called by warrant (shares)		7,597,044		7,597,044
Warrant | Issued to Tema in connection with the Transaction
Class of Stock [Line Items]
Securities called by warrant (shares)	4,000,000
Warrant | PIPE Investors
Class of Stock [Line Items]
Securities called by warrant (shares)	5,000,000
Class B Common Stock | Rosehill Operating
Class of Stock [Line Items]
Issuance of stock and warrants (shares)	29,807,692
8.0% Series A Cumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Series A preferred stock, liquidation preference (USD per share) | $ / shares		$ 1,000		$ 1,000
8% Series A Cumulative Perpetual Convertible Preferred Stock
Class of Stock [Line Items]
Stock issued upon conversion of convertible preferred stock (shares)		86.9565		86.9565
Share price (USD per share) | $ / shares		$ 11.5		$ 11.5
Series A Preferred Stock
Class of Stock [Line Items]
Series A preferred stock, liquidation preference (USD per share) | $ / shares		1,000		1,000	$ 1,000
Dividends declared on preferred stock (USD per share) | $ / shares		19.95	$ 19.73
Class A Common Stock
Class of Stock [Line Items]
Exercise price of warrants (USD per share) | $ / shares		$ 21		$ 21
Variable Interest Entity, Not Primary Beneficiary | Issued to Tema in connection with the Transaction
Class of Stock [Line Items]
Ownership in variable interest entity				67.30%
Tax Receivable Agreement | Issued to Tema in connection with the Transaction
Class of Stock [Line Items]
Securities called by warrant (shares)		4,000,000		4,000,000

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Dividends (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Class of Stock [Line Items]
Series A Preferred Stock paid or payable in cash	$ 2,027	$ 984	$ 4,033	$ 1,948
Series A Preferred Stock
Class of Stock [Line Items]
Series A Preferred Stock paid-in-kind	0	984	0	1,949
Series A Preferred Stock paid or payable in cash	2,027	984	4,033	1,948
Series A Preferred Stock dividends	$ 2,027	$ 1,968	$ 4,033	$ 3,897

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	May 22, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 1.9	$ 1.8	$ 2.9	$ 3.3
Employer matching contribution in relation to gross pay (as a percent)			6.00%
Employer matching contributions	0.2	$ 0.1	$ 0.4	$ 0.2
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation not yet recognized	1.2		$ 1.2
Period for recognition of compensation not yet recognized			7 months 28 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation not yet recognized	5.4		$ 5.4
Period for recognition of compensation not yet recognized			2 years 1 month 21 days
Performance Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation not yet recognized	3.9		$ 3.9
Period for recognition of compensation not yet recognized			2 years 26 days
Cash-Settled Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation not yet recognized	1.5		$ 1.5
Period for recognition of compensation not yet recognized			2 years 7 months 24 days
Liability for cash-settled restricted stock units	$ 0.2		$ 0.2
Closing price (USD per share)			$ 3.70
Long-Term Incentive Plan | Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issuance authorized (shares)						7,500,000
Stock available for issuance (shares)	3,285,122		3,285,122
Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution (as a percent)			100.00%		100.00%
Employer matching contribution in relation to gross pay (as a percent)					3.00%
Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution (as a percent)					50.00%
Tranche Two | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution in relation to gross pay (as a percent)					3.00%
Tranche Two | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution in relation to gross pay (as a percent)					5.00%

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Nonvested Share Activity (Details)	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Restricted Stock
Number of Shares
Nonvested at beginning of period (shares) | shares	246,653
Granted (shares) | shares	428,984
Vested (shares) | shares	(114,360)
Forfeited (shares) | shares	0
Nonvested at end of period (shares) | shares	561,277
Weighted-Average Grant Date Fair Value
Nonvested at beginning of period (USD per share) | $ / shares	$ 6.24
Granted (USD per share) | $ / shares	3.12
Vested (USD per share) | $ / shares	7.25
Forfeited (USD per share) | $ / shares	0
Nonvested at end of period (USD per share) | $ / shares	$ 3.66
Restricted Stock Units
Number of Shares
Nonvested at beginning of period (shares) | shares	713,558
Granted (shares) | shares	1,194,624
Vested (shares) | shares	(330,590)
Forfeited (shares) | shares	(141,344)
Nonvested at end of period (shares) | shares	1,436,248
Weighted-Average Grant Date Fair Value
Nonvested at beginning of period (USD per share) | $ / shares	$ 8.13
Granted (USD per share) | $ / shares	3.25
Vested (USD per share) | $ / shares	8.44
Forfeited (USD per share) | $ / shares	5.57
Nonvested at end of period (USD per share) | $ / shares	$ 4.27
Performance Restricted Stock Units
Number of Shares
Nonvested at beginning of period (shares) | shares	284,415
Granted (shares) | shares	845,680
Vested (shares) | shares	0
Forfeited (shares) | shares	(148,206)
Nonvested at end of period (shares) | shares	981,889
Weighted-Average Grant Date Fair Value
Nonvested at beginning of period (USD per share) | $ / shares	$ 8.99
Granted (USD per share) | $ / shares	4.17
Vested (USD per share) | $ / shares	0
Forfeited (USD per share) | $ / shares	6.80
Nonvested at end of period (USD per share) | $ / shares	$ 5.17
Cash-Settled Restricted Stock Units
Number of Shares
Nonvested at beginning of period (shares) | shares	78,224
Granted (shares) | shares	409,390
Vested (shares) | shares	(28,123)
Forfeited (shares) | shares	(15,649)
Nonvested at end of period (shares) | shares	443,842
Weighted-Average Grant Date Fair Value
Nonvested at beginning of period (USD per share) | $ / shares	$ 6.63
Granted (USD per share) | $ / shares	3.12
Vested (USD per share) | $ / shares	6.63
Forfeited (USD per share) | $ / shares	4.48
Nonvested at end of period (USD per share) | $ / shares	$ 3.47

Stock-Based Compensation - Sc_2

Stock-Based Compensation - Schedule of Assumptions Used to Value the Market Based Performance Awards (Details) - Performance Restricted Stock Units	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	71.40%	0.00%	68.90%	89.50%
Risk-free interest rate	2.20%	0.00%	2.20%	2.40%
Dividend yield	0.00%	0.00%	0.00%	0.00%
Expected life (years)	1 year 7 months 17 days	0 years	2 years 5 months 27 days	2 years 9 months 7 days

Transactions with Related Par_2

Transactions with Related Parties (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Gateway
Related Party Transaction [Line Items]
Revenue from related parties		$ 73,000,000		$ 124,500,000
Due from related parties	$ 0		$ 0		$ 0
Gateway | Crude Oil Gathering Agreement
Related Party Transaction [Line Items]
Costs and expenses, related party	200,000		800,000
Due to related parties	0		0		300,000
Gateway | Marketing and gathering agreement
Related Party Transaction [Line Items]
Costs and expenses, related party	1,500,000	$ 1,300,000	2,800,000	$ 1,600,000
Due to related parties					0
Gateway | Crude Oil Marketing Consulting Agreement
Related Party Transaction [Line Items]
Costs and expenses, related party	100,000
Seawolf | Water Purchase Agreement
Related Party Transaction [Line Items]
Costs and expenses, related party	500,000		700,000
Due to related parties	$ 100,000		$ 100,000		$ 600,000

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Impact of ASU 2014-09 Adoption (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Revenues	$ 69,383	$ 80,527	$ 141,243	$ 136,313
Operating expenses:
Gathering and transportation	1,320	1,207	3,681	1,919
Amounts Without Adoption of ASU 2014-09
Revenues:
Revenues	69,845		141,833
Operating expenses:
Gathering and transportation	1,782		4,271
Accounting Standards Update 2014-09 | Effect of Change
Revenues:
Revenues	(462)		(590)
Operating expenses:
Gathering and transportation	(462)		(590)
Oil sales
Revenues:
Revenues	66,840	73,061	132,693	124,615
Oil sales | Amounts Without Adoption of ASU 2014-09
Revenues:
Revenues	66,681		131,877
Oil sales | Accounting Standards Update 2014-09 | Effect of Change
Revenues:
Revenues	159		816
Natural gas sales
Revenues:
Revenues	(649)	2,308	825	4,053
Natural gas sales | Amounts Without Adoption of ASU 2014-09
Revenues:
Revenues	(60)		1,966
Natural gas sales | Accounting Standards Update 2014-09 | Effect of Change
Revenues:
Revenues	(589)		(1,141)
Natural gas liquids sales
Revenues:
Revenues	3,192	$ 5,158	7,725	$ 7,645
Natural gas liquids sales | Amounts Without Adoption of ASU 2014-09
Revenues:
Revenues	3,224		7,990
Natural gas liquids sales | Accounting Standards Update 2014-09 | Effect of Change
Revenues:
Revenues	$ (32)		$ (265)

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 26,810	$ 32,260
Trade Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 25,342	$ 28,876