MNRL Sub (MNRL) 10-Q 3 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2021	Nov. 01, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-38870
Entity Registrant Name	Brigham Minerals, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-1106283
Entity Address, Address Line One	5914 W. Courtyard Drive
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Austin
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	78730
City Area Code	512
Local Phone Number	220-6350
Title of 12(b) Security	Class A common stock, par value $0.01
Trading Symbol	MNRL
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001745797
Current Fiscal Year End Date	--12-31
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		45,245,341
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		11,541,211

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 14,294	$ 9,144
Accounts receivable	28,486	17,632
Prepaid expenses and other	5,447	3,693
Total current assets	48,227	30,469
Oil and gas properties, at cost, using the full cost method of accounting:
Unevaluated property	332,165	325,091
Evaluated property	535,795	488,301
Less accumulated depreciation, depletion, and amortization	(220,942)	(189,546)
Total oil and gas properties, net	647,018	623,846
Other property and equipment	5,614	5,587
Less accumulated depreciation	(4,806)	(4,632)
Other property and equipment, net	808	955
Deferred tax asset	23,913	24,920
Other assets, net	801	771
Total assets	720,767	680,961
Current liabilities:
Accounts payable and accrued liabilities	9,034	7,905
Total current liabilities	9,034	7,905
Long-term bank debt	53,000	20,000
Other non-current liabilities	1,667	1,126
Temporary equity	0	146,280
Equity:
Preferred stock, $0.01 par value; 50,000,000 authorized; no shares issued and outstanding at September 30, 2021 and December 31, 2020	0	0
Additional paid-in capital	586,148	601,129
Accumulated deficit	(101,617)	(92,392)
Treasury stock, at cost; 436,630 shares at September 30, 2021 and December 31, 2020	(3,527)	(3,527)
Total equity attributable to Brigham Minerals, Inc.	481,461	505,650
Non-controlling interest	175,605	0
Total equity	657,066	505,650
Total liabilities and equity	720,767	680,961
Common Class A
Equity:
Common stock	457	440
Common Class B
Equity:
Common stock	$ 0	$ 0

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Treasury stock (in shares)	436,630	436,630
Common Class A
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	45,681,971	43,995,124
Common stock, shares outstanding (in shares)	45,245,341	43,558,494
Treasury stock (in shares)	436,630
Common Class B
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	11,541,211	13,167,687
Common stock, shares outstanding (in shares)	11,541,211	13,167,687

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
REVENUES
Total revenues	$ 41,964,000	$ 23,078,000	$ 113,548,000	$ 67,963,000
OPERATING EXPENSES
Gathering, transportation and marketing	1,641,000	1,702,000	4,967,000	5,106,000
Severance and ad valorem taxes	2,372,000	1,393,000	6,505,000	4,179,000
Depreciation, depletion, and amortization	8,682,000	11,801,000	27,129,000	35,827,000
Impairment of oil and gas properties	0	18,905,000	0	18,905,000
General and administrative	5,729,000	5,162,000	16,868,000	16,562,000
Total operating expenses	18,424,000	38,963,000	55,469,000	80,579,000
INCOME (LOSS) FROM OPERATIONS	23,540,000	(15,885,000)	58,079,000	(12,616,000)
Interest expense, net	(451,000)	(118,000)	(1,105,000)	(695,000)
Other income, net	36,000	4,000	51,000	29,000
Income (loss) before income taxes	23,125,000	(15,999,000)	57,025,000	(13,282,000)
Income tax expense (benefit)	4,214,000	(2,982,000)	10,717,000	(2,250,000)
NET INCOME (LOSS)	18,911,000	(13,017,000)	46,308,000	(11,032,000)
Less: net (income) loss attributable to non-controlling interest	(4,698,000)	3,552,000	(12,311,000)	2,223,000
Net income (loss) attributable to Brigham Minerals, Inc. shareholders	$ 14,213,000	$ (9,465,000)	$ 33,997,000	$ (8,809,000)
NET INCOME (LOSS) PER COMMON SHARE
Basic (in dollars per share)	$ 0.31	$ (0.24)	$ 0.77	$ (0.24)
Diluted (in dollars per share)	$ 0.31	$ (0.24)	$ 0.75	$ (0.24)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic (in shares)	45,198	40,124	44,216	36,475
Diluted (in shares)	45,888	40,124	45,056	36,475
Mineral and royalty revenues
REVENUES
Total revenues	$ 40,473,000	$ 21,568,000	$ 109,654,000	$ 62,485,000
Lease bonus and other revenues
REVENUES
Total revenues	$ 1,491,000	$ 1,510,000	$ 3,894,000	$ 5,478,000

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Additional Paid-in Capital	Accumulated Deficit	Treasury Stock	Noncontrolling Interest	Common Class A	Common Class ACommon Stock	Common Class B	Common Class BCommon Stock
Beginning balance (in shares) at Dec. 31, 2019				0			34,041,000		22,847,000
Beginning balance at Dec. 31, 2019	$ 317,319	$ 323,578	$ (6,599)	$ 0			$ 340		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment of temporary equity to carrying value	206,017	206,017
Conversion of shares of Class B Common Stock to Class A Common Stock (in shares)							140,000		(140,000)
Conversion of shares of Class B Common Stock to Class A Common Stock	1,526	1,524					$ 2
Shares surrendered for tax withholdings on vested equity awards (in shares)							(7,000)
Deferred tax asset arising from (reduction in) conversion of shares of Class B Common Stock to Class A Common Stock	204	204
Share-based compensation	3,402	3,402
Dividends and distributions declared	(13,541)		(13,541)
Net income (loss)	4,706		4,706
Ending balance (in shares) at Mar. 31, 2020							34,174,000		22,707,000
Ending balance at Mar. 31, 2020	519,633	534,725	(15,434)				$ 342		$ 0
Beginning balance (in shares) at Dec. 31, 2019				0			34,041,000		22,847,000
Beginning balance at Dec. 31, 2019	317,319	323,578	(6,599)	$ 0			$ 340		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(8,809)
Ending balance (in shares) at Sep. 30, 2020				0			43,316,000		13,168,000
Ending balance at Sep. 30, 2020	582,534	633,634	(48,011)	$ 0			$ 438		$ 0
Beginning balance (in shares) at Mar. 31, 2020							34,174,000		22,707,000
Beginning balance at Mar. 31, 2020	519,633	534,725	(15,434)				$ 342		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment of temporary equity to carrying value	(37,445)	(37,445)
Conversion of shares of Class B Common Stock to Class A Common Stock (in shares)							5,094,000		(5,094,000)
Conversion of shares of Class B Common Stock to Class A Common Stock	51,569	51,518					$ 51
Shares surrendered for tax withholdings on vested equity awards (in shares)							(11,000)
Shares surrendered for tax withholdings on vested RSAs	(185)	(185)
Deferred tax asset arising from (reduction in) conversion of shares of Class B Common Stock to Class A Common Stock	(780)	(780)
Share-based compensation (in shares)							50,000
Share-based compensation	3,332	3,332
Restricted stock forfeited (in shares)							(9,000)
Dividends and distributions declared	(13,272)		(13,272)
Net income (loss)	(4,050)		(4,050)
Ending balance (in shares) at Jun. 30, 2020				0			39,298,000		17,613,000
Ending balance at Jun. 30, 2020	518,802	551,165	(32,756)	$ 0			$ 393		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment of temporary equity to carrying value	37,445	37,445
Conversion of shares of Class B Common Stock to Class A Common Stock (in shares)							4,445,000		(4,445,000)
Conversion of shares of Class B Common Stock to Class A Common Stock	44,396	44,351					$ 45
Deferred tax asset arising from (reduction in) conversion of shares of Class B Common Stock to Class A Common Stock	(2,845)	(2,845)
Purchase of Treasury Stock (in shares)				(437,000)			(437,000)
Purchase of treasury stock	(3,527)			$ (3,527)
Share-based compensation (in shares)							10,000
Share-based compensation	3,518	3,518
Dividends and distributions declared	(5,790)		(5,790)
Net income (loss)	(9,465)		(9,465)
Ending balance (in shares) at Sep. 30, 2020				0			43,316,000		13,168,000
Ending balance at Sep. 30, 2020	582,534	633,634	(48,011)	$ 0			$ 438		$ 0
Beginning balance (in shares) at Dec. 31, 2020				437,000		43,558,494	43,558,000	13,167,687	13,168,000
Beginning balance at Dec. 31, 2020	505,650	601,129	(92,392)	$ (3,527)	$ 0		$ 440		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment of temporary equity to carrying value	(54,294)	(54,294)
Conversion of shares of Class B Common Stock to Class A Common Stock (in shares)							112,000		(112,000)
Conversion of shares of Class B Common Stock to Class A Common Stock	0	1,720			(1,721)		$ 1
Reclassification from temporary equity to non-controlling interest	202,496				202,496
Deferred tax asset arising from (reduction in) conversion of shares of Class B Common Stock to Class A Common Stock	(480)	(480)
Share-based compensation	3,933	3,933
Restricted stock forfeited (in shares)							(4,000)
Dividends and distributions declared	(15,235)		(11,788)		(3,447)
Net income (loss)	10,149		8,596		1,553
Ending balance (in shares) at Mar. 31, 2021				437,000			43,666,000		13,056,000
Ending balance at Mar. 31, 2021	652,219	552,008	(95,584)	$ (3,527)	198,881		$ 441		$ 0
Beginning balance (in shares) at Dec. 31, 2020				437,000		43,558,494	43,558,000	13,167,687	13,168,000
Beginning balance at Dec. 31, 2020	505,650	601,129	(92,392)	$ (3,527)	0		$ 440		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	33,997
Ending balance (in shares) at Sep. 30, 2021				437,000		45,245,341	45,246,000	11,541,211	11,541,000
Ending balance at Sep. 30, 2021	657,066	586,148	(101,617)	$ (3,527)	175,605		$ 457		$ 0
Beginning balance (in shares) at Mar. 31, 2021				437,000			43,666,000		13,056,000
Beginning balance at Mar. 31, 2021	652,219	552,008	(95,584)	$ (3,527)	198,881		$ 441		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of shares of Class B Common Stock to Class A Common Stock (in shares)							1,403,000		(1,403,000)
Conversion of shares of Class B Common Stock to Class A Common Stock	0	21,243			(21,257)		$ 14
Shares surrendered for tax withholdings on vested equity awards (in shares)							(9,000)
Shares surrendered for tax withholdings on vested RSAs	(145)	(145)
Issuance of common stock upon vesting of RSUs, net of shares withheld for income taxes (in shares)							75,000
Issuance of common stock upon vesting of RSUs, net of shares withheld for income taxes	0	(1)					$ 1
Deferred tax asset arising from (reduction in) conversion of shares of Class B Common Stock to Class A Common Stock	2,666	2,666
Share-based compensation	4,410	4,410
Restricted stock forfeited (in shares)							(1,000)
Dividends and distributions declared	(19,356)		(14,907)		(4,449)
Net income (loss)	15,326		11,188		4,138
Ending balance (in shares) at Jun. 30, 2021				437,000			45,134,000		11,653,000
Ending balance at Jun. 30, 2021	655,120	580,181	(99,303)	$ (3,527)	177,313		$ 456		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of shares of Class B Common Stock to Class A Common Stock (in shares)							112,000		(112,000)
Conversion of shares of Class B Common Stock to Class A Common Stock	0	1,697			(1,698)		$ 1
Deferred tax asset arising from (reduction in) conversion of shares of Class B Common Stock to Class A Common Stock	(399)	(399)
Share-based compensation	4,669	4,669
Dividends and distributions declared	(21,235)		(16,527)		(4,708)
Net income (loss)	14,213
Net income (loss)	18,911		14,213		4,698
Ending balance (in shares) at Sep. 30, 2021				437,000		45,245,341	45,246,000	11,541,211	11,541,000
Ending balance at Sep. 30, 2021	$ 657,066	$ 586,148	$ (101,617)	$ (3,527)	$ 175,605		$ 457		$ 0

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 46,308,000	$ (11,032,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	27,129,000	35,827,000
Impairment of oil and gas properties	0	18,905,000
Share-based compensation expense	7,537,000	5,692,000
Amortization of debt issuance costs	217,000	545,000
Deferred income tax expense (benefit)	2,794,000	(1,351,000)
Bad debt expense	144,000	299,000
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	(10,999,000)	10,312,000
Increase in other current assets	(1,753,000)	(776,000)
Decrease in other deferred charges	0	45,000
Increase (decrease) in accounts payable and accrued liabilities	968,000	(4,269,000)
Increase (decrease) in other long-term liabilities	20,000	(465,000)
Net cash provided by operating activities	72,365,000	53,732,000
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to oil and gas properties	(49,203,000)	(45,996,000)
Additions to other fixed assets	(28,000)	(340,000)
Proceeds from sale of oil and gas properties, net	4,441,000	1,565,000
Net cash used in investing activities	(44,790,000)	(44,771,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments of long-term debt	(4,000,000)	0
Borrowing of long-term debt	37,000,000	5,000,000
Purchase of treasury stock	0	(3,527,000)
Dividends paid	(41,374,000)	(31,340,000)
Distribution to holders of non-controlling interest	(12,668,000)	(21,504,000)
Debt issuance costs	(247,000)	(203,000)
Payment of employee tax withholding for settlement of equity compensation awards	(1,136,000)	0
Net cash used in financing activities	(22,425,000)	(51,574,000)
Increase (decrease) in cash and cash equivalents and restricted cash	5,150,000	(42,613,000)
Cash and cash equivalents and restricted cash, beginning of period	9,144,000	51,133,000
Cash and cash equivalents and restricted cash, end of period	14,294,000	8,520,000
Supplemental disclosure of noncash activity:
Accrued capital expenditures	36,000	163,000
Capitalized share-based compensation cost	5,475,000	4,560,000
Temporary equity cumulative adjustment to redemption value	54,294,000	(206,017,000)
Supplemental cash flow information:
Cash payments for loan commitment fees and interest	(898,000)	(570,000)
Tax (payment) /refund received	$ (6,481,000)	$ 113,000

Business and Basis of Presentat

Business and Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Description of the Business Brigham Minerals, Inc. (together with its wholly owned subsidiaries, "Brigham Minerals," “we," "us," "our," or the "Company"), a Delaware corporation, is a holding company whose sole material asset consists of a 79.7% interest in Brigham Minerals Holdings, LLC (“Brigham LLC”), which indirectly owns Brigham Minerals, LLC and Rearden Minerals, LLC (collectively, the “Minerals Subsidiaries”). The Minerals Subsidiaries acquire and actively manage a portfolio of mineral and royalty interests in the core of what we view as the most active, highly economic, liquids-rich resource plays across the continental United States. Our portfolio is comprised of mineral and royalty interests across six of the most highly economic, liquids-rich resource plays in the continental United States, including the Delaware and Midland Basins in West Texas and New Mexico, the SCOOP and STACK plays in the Anadarko Basin in Oklahoma, the Denver-Julesburg (“DJ”) Basin in Colorado and Wyoming and the Williston Basin in North Dakota. Our highly technical approach towards mineral acquisitions in the geologic core of top-tier resource plays has purposefully led to a concentrated portfolio covering 35 of the most highly active counties for horizontal drilling in the continental United States. Basis of Presentation The accompanying unaudited condensed consolidated interim financial statements of Brigham Minerals have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), except that, in accordance with the instructions to Form 10-Q, they do not include all of the notes required for financial statements prepared in conformity with U.S. GAAP. Accordingly, the accompanying unaudited interim financial statements should be read in conjunction with our audited financial statements included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission (the "SEC") on February 25, 2021 (the "Annual Report"). The unaudited interim financial statements reflect all normal recurring adjustments that, in the opinion of management, are necessary for a fair representation. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the entire fiscal year ending December 31, 2021. Brigham Minerals operates in one segment: oil and natural gas exploration and production. As the primary beneficiary, Brigham Minerals consolidates the financial results of Brigham LLC and its subsidiaries and reports the interest related to the portion of the units in Brigham LLC not owned by Brigham Minerals as temporary equity at December 31, 2020 and as non-controlling interest at March 31, 2021 and thereafter, which will reduce net income attributable to the holders of Brigham Minerals' Class A common stock. For more information, see "Note 9—Temporary equity and Non-controlling interest.”

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Use of Estimates These condensed consolidated financial statements and related notes are presented in accordance with GAAP. Preparation in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in the condensed consolidated financial statements and accompanying notes. Although management believes these estimates are reasonable, actual results could differ from these estimates. Changes in estimates are recorded prospectively. The accompanying condensed consolidated financial statements are based on a number of significant estimates including quantities of oil, natural gas and NGL reserves that are the basis for the calculations of depreciation, depletion, amortization (“DD&A”) and impairment of oil and natural gas properties. Reservoir engineering is a subjective process of estimating underground accumulations of oil and natural gas and there are numerous uncertainties inherent in estimating quantities of proved oil and natural gas reserves. The accuracy of any reserve estimate is a function of the quality of available data and of engineering and geological interpretation and judgment. As a result, reserve estimates may differ from the quantities of oil and natural gas that are ultimately recovered. Brigham Minerals’ year-end reserve estimates are audited by Cawley, Gillespie & Associates, Inc., an independent petroleum engineering firm. Quarterly reserve estimates are internally generated by our in-house engineering staff. Other items subject to significant estimates and assumptions include the carrying amount of oil and natural gas properties, share-based compensation costs, and revenue accruals. Significant Accounting Policies Significant accounting policies are disclosed in Brigham Minerals' audited consolidated and combined financial statements and notes for the year ended December 31, 2020, presented in the Annual Report. There have been no changes in such policies or the application of such policies during the three and nine months ended September 30, 2021, except for under the heading "—Non-Controlling Interest" below. Non-Controlling Interest As of February 19, 2021 and thereafter, the holders of Class B common stock no longer control a majority of the votes of the Company's board of directors (the "Board of Directors") through direct representation on the Board of Directors, and no longer control the determination of whether to make a cash payment upon each holder of Brigham LLC Unit's (each a "Brigham LLC Unit Holder") exercise of its Redemption Right (as hereinafter defined). As such, at September 30, 2021, Brigham Minerals accounts for Brigham LLC Unit Holders' 20.3% interest in Brigham LLC not owned by Brigham Minerals as non-controlling interest. For further discussion, see “Note 9—Temporary equity and Non-controlling interest.” Accounts Receivable Brigham Minerals routinely reviews outstanding balances, assesses the financial strength of its operators and records a reserve for amounts not expected to be fully recovered. We calculate bad debt expense using the allowance method. We recorded bad debt expense of $0.1 million for the three and nine months ended September 30, 2021, which was included in general and administrative expenses. We did not record bad debt expense for the three months ended September 30, 2020 and recorded $0.3 million for the nine months ended September 30, 2020. As of September 30, 2021 and December 31, 2020, accounts receivable was comprised of the following: (In thousands) September 30, 2021 December 31, 2020 Accounts receivable Oil and gas sales $ 27,947 $ 17,413 Reserve for bad debt (762) (855) Other 1,301 1,074 Total accounts receivable $ 28,486 $ 17,632 Concentration of Credit Risk and Significant Customers Financial instruments that potentially subject Brigham Minerals to concentrations of credit risk consist of cash, accounts receivable, and its revolving credit facility. Cash and cash equivalents are held in a few financial institutions in amounts that may, at times, exceed federally insured limits. However, no losses have been incurred and management believes that counterparty risks are minimal based on the reputation and history of the institutions selected. Accounts receivable are concentrated among operators and purchasers engaged in the energy industry within the United States. Management periodically assesses the financial condition of these entities and institutions and considers any possible credit risk to be minimal. Concentrations of oil and gas sales to significant customers (operators) are presented in the table below. Three Months Ended September 30, Nine Months Ended September 30, Customer (Operator) Name 2021 2020 2021 2020 Exxon Mobil Corp 12 % 10 % 14 % 9 % Continental Resources Inc. 11 % 12 % 11 % 9 % Occidental Petroleum Corp 10 % 11 % 11 % 13 % Royal Dutch Shell PLC 6 % 9 % 8 % 13 % Management does not believe that the loss of any customer would have a long-term material adverse effect on our financial position or the results of operations. For the three and nine months ended September 30, 2021, we received revenues from over 140 operators with approximately 66% of revenues coming from the top ten operators on our properties. For the three and nine months ended September 30, 2020, we received revenues from over 150 operators with approximately 63% of revenues coming from the top ten operators on our properties. Recently Issued Accounting Standards Not Yet Adopted Brigham Minerals’ status as an emerging growth company ("EGC") under Section 107 of the Jumpstart Our Business Startups Act of 2012 permits it to delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. Brigham Minerals originally chose to take advantage of this extended transition period. Brigham Minerals will become a large accelerated filer as of December 31, 2021 and cease to be an EGC. As a result, Brigham Minerals will be required to accelerate the adoption of new or revised accounting standards as indicated on the dates below. In February 2016, the Financial Accounting Standards Board (the "FASB") issued ASU 2016-02 Leases (Topic 842), which requires all leasing arrangements to be presented in the balance sheet as liabilities along with a corresponding asset. ASU 2016-02 does not apply to leases of mineral rights to explore for or use crude oil and natural gas. The ASU will replace most existing lease guidance in GAAP when it becomes effective. In January 2018, the FASB issued ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842, to provide an optional practical expedient to not evaluate existing or expired land easements that were not previously accounted for as leases under Topic 840. In July 2018, the FASB issued ASU 2018-11 Leases (Topic 842): Targeted Improvements, which provides for another transition method, in addition to the existing transition method, by allowing entities to initially apply the new leases standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption (i.e. comparative periods presented in the financial statements will continue to be in accordance with current GAAP (Topic 840, Leases)). The new standard becomes effective for us during the fiscal year ending December 31, 2021 and we will use January 1, 2021, the beginning of the period of adoption, as the date of initial application. We will adopt ASU 2016-02 using a modified retrospective approach and will recognize a right-of-use ("ROU") asset and lease liability on the date of initial application. We are applying the following practical expedients as provided in the standards update: • an accounting policy election to not apply the recognition requirements in the new standards update to short-term leases (a lease that at commencement date has a lease term of twelve months or less) and not to separate non-lease components from lease components for all asset classes; and • a package of practical expedients to not reassess whether a contract contains a lease, lease classification and initial direct costs prior to January 1, 2021; and • a practical expedient to not reassess certain land easements in existence prior to January 1, 2021. We have determined that the extent of the cumulative impact of adoption in the opening balance of retained earnings as of January 1, 2021 was immaterial and we expect to record a ROU asset and a corresponding lease liability of approximately $8.0 million in the condensed consolidated balance sheets at the date of adoption. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses. In May 2019, ASU 2016-13 was subsequently amended by ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments—Credit Losses and ASU 2019-05, Financial Instruments—Credit Losses (Topic 326): Targeted Transition Relief. ASU 2016-13, as amended, affects trade receivables, financial assets and certain other instruments that are not measured at fair value through net income. This ASU

Oil and Gas Properties

Oil and Gas Properties	9 Months Ended
	Sep. 30, 2021
Extractive Industries [Abstract]
Oil and Gas Properties	Oil and Gas Properties Brigham Minerals uses the full cost method of accounting for its oil and natural gas properties. Under this method, all acquisition costs incurred for the purpose of acquiring mineral and royalty interests are capitalized into a full cost pool. In addition, certain internal costs (or "capitalized general and administrative costs"), are also included in the full cost pool. Capitalized general and administrative costs were $3.1 million and $2.6 million for the three months ended September 30, 2021 and 2020, respectively, and $8.8 million and $7.6 million for the nine months ended September 30, 2021 and 2020, respectively. Capitalized costs do not include any costs related to general corporate overhead or similar activities, which are expensed in the period incurred. Oil and gas properties as of the dates shown consisted of the following: (In thousands) September 30, 2021 December 31, 2020 Oil and gas properties, at cost, using the full cost method of accounting: Unevaluated property $ 332,165 $ 325,091 Evaluated property 535,795 488,301 Total oil and gas properties, at cost 867,960 813,392 Less accumulated depreciation, depletion, and amortization (220,942) (189,546) Total oil and gas properties, net $ 647,018 $ 623,846 Capitalized costs are depleted on a unit of production basis based on proved oil and natural gas reserves. Depletion expense was $8.6 million and $11.6 million for the three months ended September 30, 2021 and 2020, respectively, and $27.0 million and $35.0 million for the nine months ended September 30, 2021 and 2020, respectively. Average depletion of proved properties was $10.34 per Boe and $13.58 per Boe for the three months ended September 30, 2021 and 2020, respectively, and $10.98 and $13.40 for the nine months ended September 30, 2021 and 2020, respectively. Under the full cost method of accounting, total capitalized costs of oil and natural gas properties, net of accumulated depletion and related deferred income taxes, may not exceed an amount equal to the present value of future net revenues from proved reserves, discounted at 10% per annum ("PV-10"), plus the cost of unevaluated properties, less related income tax effects (the "ceiling test"). A write-down of the carrying value of the full cost pool ("impairment charge") is a noncash charge that reduces earnings and impacts equity in the period of occurrence and typically results in lower depletion expense in future periods. A ceiling test is calculated at each reporting period. The ceiling test calculation is prepared using an unweighted arithmetic average of oil prices ("SEC oil price") and natural gas prices ("SEC gas price") as of the first day of each month for the trailing 12-month period ended, adjusted by area for energy content, transportation fees and regional price differentials, as required under the guidelines established by the SEC. At September 30, 2021 and September 30, 2020, the SEC oil price and SEC gas price used in the calculation of the ceiling test were $57.69 and $43.55, respectively, per barrel of oil, and $3.00 and $1.98, respectively, per MMBtu of natural gas. There were no impairment charges during the three and nine months ended September 30, 2021. At September 30, 2020, the net book value of oil and natural gas properties exceeded the ceiling limitation resulting in an impairment charge of $18.9 million to oil and gas properties, net during the three and nine months ended September 30, 2020. A decline in the SEC oil price or the SEC gas price could lead to impairment charges in the future and such impairment charges could be material, such as occurred in the third and fourth quarters of 2020. In addition to the impact of lower prices, any future changes to assumptions of drilling and completion activity, development timing, acquisitions or divestitures of oil and gas properties, proved undeveloped locations, and production and other estimates may require revisions to estimates of total proved reserves which would impact the amount of any impairment charge.

Acquisitions and Divestitures

Acquisitions and Divestitures	9 Months Ended
	Sep. 30, 2021
Extractive Industries [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures During the nine months ended September 30, 2021 and 2020, Brigham Minerals entered into a number of acquisitions of mineral and royalty interests from various sellers in Texas, Oklahoma, Colorado, New Mexico, and North Dakota, as reflected in the tables below. The change in the oil and natural gas property balance is comprised of payments for acquisitions of minerals, land brokerage costs and capitalized general and administrative expenses that for the nine months ended September 30, 2021 were funded with our retained operating cash flow, proceeds from asset sales and our revolving credit facility (as hereinafter defined). The changes in the oil and natural gas property balance for the nine months ended September 30, 2020 were partially funded with proceeds from the December 2019 Offering as well as our retained cash flow and our revolving credit facility. During the three and nine months ended September 30, 2021, Brigham Minerals divested certain non-core, undeveloped acreage in Oklahoma and received cash of $4.4 million. Oil and Gas Properties Acquired Cash Consideration Paid (In thousands) Evaluated Unevaluated Quarter Ended March 31, 2021 $ 9,073 $ 12,776 $ 21,849 Quarter Ended June 30, 2021 $ 8,842 $ 5,594 $ 14,436 Quarter Ended September 30, 2021 $ 2,732 $ 10,077 $ 12,809 $ 20,647 $ 28,447 $ 49,094 Oil and Gas Properties Acquired Cash Consideration Paid (In thousands) Evaluated Unevaluated Quarter Ended March 31, 2020 $ 9,471 $ 15,947 $ 25,418 Quarter Ended June 30, 2020 $ 805 $ 2,493 $ 3,298 Quarter Ended September 30, 2020 $ 6,881 $ 10,499 $ 17,380 Total $ 17,157 $ 28,939 $ 46,096

Revenue From Contracts With Cus

Revenue From Contracts With Customers	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue From Contracts With Customers	Revenue From Contracts With Customers Contract Balances Oil, natural gas and NGL sales revenues are recognized when control of the product is transferred to the customer, the performance obligations under the terms of the contracts with customers are satisfied and collectability is reasonably assured. Lease bonus and other revenues are recognized when the lease agreement has been executed, payment has been received, and the Company has no further obligation to refund the payment. All of the Company's oil, natural gas and NGL sales are made under contracts with customers (operators). The performance obligations for the Company's contracts with customers are satisfied at a point in time through the delivery of oil and natural gas to its customers. Accordingly, the Company’s contracts do not give rise to contract assets or liabilities. As of September 30, 2021, accounts receivable from oil and gas sales of $27.9 million represent rights to payment for which Brigham Minerals has satisfied its obligations under contracts with customers. Prior-period performance obligations Given we do not operate our properties, Brigham Minerals has limited visibility into the timing of when new wells start producing and is required to estimate the amount of production delivered to the purchaser and the price that will be received for the sale of the product. The amount of production delivered to the purchaser is estimated on the basis of state-reported production data or production statements from operators. The difference between the Company’s estimates and the actual amounts received for oil and natural gas sales is recorded in the month that payment is received from the third party. For the three and nine months ended September 30, 2021 and 2020, revenue recognized in the reporting periods related to performance obligations satisfied in prior reporting periods was immaterial. Allocation of transaction price to remaining performance obligations

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements We classify financial assets and liabilities that are measured and reported at fair value on a recurring basis using a hierarchy based on the inputs used in measuring fair value. GAAP defines fair value as 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). We classify the inputs used to measure fair value into the following hierarchy: • Level 1: Inputs based on quoted market prices in active markets for identical assets or liabilities at the measurement date. • Level 2: Inputs based on quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active or other inputs that are observable and can be corroborated by observable market data. • Level 3: Inputs that reflect management’s best estimates and assumptions of what market participants would use in pricing the asset or liability at the measurement date. The inputs are unobservable in the market and significant to the valuation of the instruments. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer would be reported at the beginning of the period in which the change occurs. Assets and Liabilities Measured at Fair Value on a Recurring Basis We had no financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2021 and December 31, 2020. Brigham Minerals had no transfers into or out of Level 1 and no transfers into or out of Level 2 for the nine months ended September 30, 2021 and September 30, 2020. Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis Certain non-financial assets and liabilities, such as assets and liabilities acquired in a business combination, are measured at fair value on a nonrecurring basis on the acquisition date and are subject to fair value adjustments under certain circumstances. The inputs used to determine such fair value are primarily based upon internally developed cash flow models and include factors such as estimates of economic reserves, future commodity prices and risk-adjusted discount rates, and are classified within Level 3. Fair Value of Other Financial Instruments

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Revolving Credit Facility On May 16, 2019, Brigham Resources, LLC, a wholly-owned subsidiary of Brigham LLC ("Brigham Resources"), entered into a credit agreement with Wells Fargo Bank, N.A., as administrative agent (the "Administrative Agent") for the various lenders from time to time party thereto, providing for a revolving credit facility (our "revolving credit facility"). Our revolving credit facility is guaranteed by Brigham Resources’ domestic subsidiaries and is collateralized by a lien on a substantial portion of Brigham Resources and its domestic subsidiaries’ assets, including a substantial portion of their respective royalty and mineral properties. On July 7, 2021, Brigham Resources entered into the Third Amendment to the credit agreement (the "Third Amendment"). The Third Amendment, among other things, evidenced an increase of the borrowing base and elected commitments under the prior credit agreement from $135.0 million to $165.0 million and the addition of leverage (maximum 3.00x) and liquidity (minimum 10% of total net revolving commitments) conditions to Brigham Resources’ ability to pay dividends or distributions (other than permitted tax distributions) to the owners of its equity interests. Availability under our revolving credit facility is governed by a borrowing base, which is subject to redetermination semi-annually. In addition, lenders holding two-thirds of the aggregate commitments may request one additional redetermination each year. Brigham Resources can also request one additional redetermination each year, and such other redeterminations as appropriate when significant acquisition opportunities arise. The borrowing base is subject to further adjustments for asset dispositions, material title deficiencies, certain terminations of hedge agreements and issuances of permitted additional indebtedness. Increases to the borrowing base require unanimous approval of the lenders, while decreases only require approval of lenders holding two-thirds of the aggregate commitments at such time. The weighted average interest rate for the three and nine months ended September 30, 2021 was 2.36% and 2.13%, respectively. As of September 30, 2021, the elected borrowing base on our revolving credit facility was $165.0 million, with outstanding borrowings of $53.0 million, resulting in $112.0 million available for future borrowings. Our revolving credit facility bears interest at a rate per annum equal to, at our option, the adjusted base rate or the adjusted LIBOR rate plus an applicable margin. The applicable margin is based on utilization of our revolving credit facility and ranges from (a) in the case of adjusted base rate loans, 1.000% to 2.000% and (b) in the case of adjusted LIBOR rate loans, 2.000% to 3.000%. Brigham Resources may elect an interest period of one two three six twelve Our revolving credit facility matures on May 16, 2024. Loans drawn under our revolving credit facility may be prepaid at any time without premium or penalty (other than customary LIBOR breakage) and must be prepaid in the event that exposure exceeds the lesser of the borrowing base and the elected availability at such time. The principal amount of loans that are prepaid are required to be accompanied by accrued and unpaid interest and fees on such amounts. Loans that are prepaid may be reborrowed. In addition, Brigham Resources may permanently reduce or terminate in full the commitments under our revolving credit facility prior to maturity. Any excess exposure resulting from such permanent reduction or termination must be prepaid. Upon the occurrence of an event of default under our revolving credit facility, the Administrative Agent acting at the direction of the lenders holding a majority of the aggregate commitments at such time may accelerate outstanding loans and terminate all commitments under our revolving credit facility, provided that such acceleration and termination occurs automatically upon the occurrence of a bankruptcy or insolvency event of default. Our revolving credit facility contains customary affirmative and negative covenants, including, without limitation, reporting obligations, restrictions on asset sales, restrictions on additional debt and lien incurrence and restrictions on making distributions (subject only to no default or borrowing base deficiency) and investments. In addition, our revolving credit facility requires us to maintain (a) a current ratio of not less than 1.00 to 1.00 and (b) a ratio of total net funded debt to consolidated EBITDA of not more than 3.50 to 1.00. As of September 30, 2021, we were in compliance with all covenants in accordance with our revolving credit facility. Associated with the Company's Fall 2021 semi-annual borrowing base redetermination under its revolving credit facility, the Company estimates the borrowing base will be increased. See "Item 2—Management’s Discussion and Analysis of Financial Condition and Results of Operations—Overview—Financial and Operational Overview” for further discussion.

Equity

Equity	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Equity	EquityClass A Common Stock Brigham Minerals had approximately 45.2 million shares of its Class A common stock outstanding as of September 30, 2021. Holders of Class A common stock are entitled to one vote per share on all matters to be voted upon by the shareholders and are entitled to ratably receive dividends when and if declared by the Company’s Board of Directors. Upon liquidation, dissolution, distribution of assets or other winding up, the holders of Class A common stock are entitled to receive ratably the assets available for distribution to the shareholders after payment of liabilities. Class B Common Stock Brigham Minerals had approximately 11.5 million shares of its Class B common stock outstanding as of September 30, 2021. Holders of the Class B common stock are entitled to one vote per share on all matters to be voted upon by the shareholders. Holders of Class A common stock and Class B common stock generally vote together as a single class on all matters presented to Brigham Minerals’ shareholders for their vote or approval. Holders of Class B common stock do not have any right to receive dividends or distributions upon a liquidation or winding up of Brigham Minerals. Treasury Stock As of September 30, 2021, there were 436,630 shares of Class A common stock held in treasury. Earnings per Share Basic earnings per share (“EPS”) measures the performance of an entity over the reporting period. Diluted earnings per share measures the performance of an entity over the reporting period while giving effect to all potentially dilutive common shares that were outstanding during the period. Brigham Minerals uses the “if-converted” method to determine the potential dilutive effect of exchanges of outstanding shares of Class B common stock (and corresponding units of Brigham LLC ("Brigham LLC Units")), and the treasury stock method to determine the potential dilutive effect of vesting of its outstanding RSAs, RSUs, PSUs (each as defined in "Note 10—Share-Based Compensation") and unvested Incentive Units. Brigham Minerals does not use the two-class method because the Class B common stock and the unvested share-based awards are nonparticipating securities. For the three months ended September 30, 2021 the Incentive Units and shares of Class B common stock were not recognized in dilutive EPS calculations as the effects would have been antidilutive. For the nine months ended September 30, 2021 the Incentive Units, shares of Class B common stock and RSAs were not recognized in dilutive EPS calculations as the effect would have been antidilutive. For the three and nine months ended September 30, 2020, the Incentive Units, RSUs, RSAs and shares of Class B common stock were not recognized in dilutive EPS calculations as the effect would have been antidilutive. As of September 30, 2020, there were 1,187,811 shares related to PSUs (based on target), that could vest in the future dependent on predetermined market condition. These units were not included in the computation of EPS for the three and nine months ended September 30, 2020, because the performance goals had not been met, assuming the end of the reporting period was the end of the contingency period. The following table reflects the allocation of net income to common shareholders and EPS computations for the period indicated based on a weighted average number of common stock outstanding for the period: Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except per share data) 2021 2020 2021 2020 Basic EPS Numerator: Basic net income (loss) attributable to Brigham Minerals, Inc. shareholders $ 14,213 $ (9,465) $ 33,997 $ (8,809) Denominator: Basic weighted average shares outstanding 45,198 40,124 44,216 36,475 Basic EPS attributable to Brigham Minerals, Inc. shareholders $ 0.31 $ (0.24) $ 0.77 $ (0.24) Diluted EPS Numerator: Basic net income (loss) attributable to Brigham Minerals, Inc. shareholders $ 14,213 $ (9,465) $ 33,997 $ (8,809) Effects of dilutive securities — — — — Diluted net income (loss) attributable to Brigham Minerals, Inc. shareholders $ 14,213 $ (9,465) $ 33,997 $ (8,809) Denominator: Basic weighted average shares outstanding 45,198 40,124 44,216 36,475 Effects of dilutive securities: Unvested Equity Awards 690 — 840 — Diluted weighted average shares outstanding 45,888 40,124 45,056 36,475 Diluted EPS attributable to Brigham Minerals, Inc. shareholders $ 0.31 $ (0.24) $ 0.75 $ (0.24)

Temporary equity and Noncontrol

Temporary equity and Noncontrolling Interest	9 Months Ended
	Sep. 30, 2021
Temporary Equity and Noncontrolling Interest Disclosure [Abstract]
Temporary equity and Noncontrolling Interest	Temporary equity and Non-controlling interest Temporary equity Temporary equity represented the 23.2% interest in the units of Brigham LLC not owned by Brigham Minerals, as of December 31, 2020. Class B common stock was classified as temporary equity in the condensed consolidated balance sheet as of December 31, 2020, as pursuant to the Amended and Restated Limited Liability Company Agreement of Brigham LLC (the "Brigham LLC Agreement"), the Redemption Rights of a Brigham LLC Unit Holder for either shares of Class A common stock or an equivalent amount of cash was not solely within Brigham Minerals' control. This was due to the fact that the holders of Class B common stock controlled a majority of the votes of the Board of Directors through direct representation on the Board of Directors, which allowed the holders of Class B common stock to control the determination of whether to make a cash payment upon a Brigham LLC Unit Holder's exercise of its Redemption Right. As a result of the appointment of an additional independent member to our Board of Directors on February 19, 2021, the holders of Class B common stock no longer hold a majority of the votes of the Board of Directors and no longer control the Board of Directors through direct representation on the Board of Directors. Consequently, after February 19, 2021, Class B common stock is presented as non-controlling interest (as discussed below) in the condensed consolidated balance sheet of Brigham Minerals. Temporary equity was recorded at the greater of the carrying value or redemption amount with a corresponding adjustment to additional paid-in capital. For the period from January 1, 2021 to February 18, 2021, Brigham Minerals recorded adjustments to the value of temporary equity as presented in the table below: (In thousands) Temporary Equity Adjustments Balance - December 31, 2020 (1) $ 146,280 Net income attributable to temporary equity 1,922 Adjustment of temporary equity to redemption value 54,294 Reclassification to non-controlling interest (2) $ (202,496) Balance - February 18, 2021 $ — (1) Based on 13,167,687 shares of Class B common stock outstanding and Class A common stock 10-day volume-weighted average closing price of $11.11 at December 31, 2020. (2) Based on 13,167,687 shares of Class B common stock outstanding and Class A common stock 10-day volume-weighted average closing price of $15.38 at February 18, 2021. The February 18, 2021 redemption value of temporary equity became the carrying value of non-controlling interest, as discussed below. Non-controlling Interest Non-controlling interest represents the 20.3% interest in the units of Brigham LLC not owned by Brigham Minerals, as of September 30, 2021. Class B common stock is classified as non-controlling interest in the condensed consolidated balance sheet as of February 19, 2021 and thereafter. Each share of Class B common stock does not have any economic rights but entitles its holder to one vote on all matters to be voted on by our shareholders generally, and holders of Brigham LLC Units (and Class B common stock) have a redemption right into shares of Class A common stock. Under the Brigham LLC Agreement, each Brigham LLC Unit Holder, subject to certain limitations, has a right (the "Redemption Right") to cause Brigham LLC to acquire all or a portion of its Brigham LLC Units for, at Brigham LLC’s election, (i) shares of our Class A common stock at a redemption ratio of one share of Class A common stock for each Brigham LLC Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions or (ii) an equivalent amount of cash. We will determine whether to issue shares of Class A common stock or cash based on facts in existence at the time of the decision, which we expect would include the relative value of the Class A common stock (including trading prices for the Class A common stock at the time), the cash purchase price, the availability of other sources of liquidity (such as an issuance of preferred stock) to acquire the Brigham LLC Units and alternative uses for such cash. Alternatively, upon the exercise of the Redemption Right, Brigham Minerals (instead of Brigham LLC) will have a call right to, for administrative convenience, acquire each tendered Brigham LLC Unit directly from the redeeming Brigham LLC Unit Holder for, at its election, (x) one share of Class A common stock or (y) an equivalent amount of cash (the "Call Right"). The decision to make a cash payment upon a Brigham LLC Unit Holder's exercise of its Redemption Right is required to be made by the Company's directors who are independent under Section 10A-3 of the Securities Act and do not hold any Brigham LLC Units subject to such redemption. In connection with any redemption of Brigham LLC Units pursuant to the Redemption Right or acquisition pursuant to our Call Right, the corresponding number of shares of Class B common stock will be cancelled. Non-controlling interest is recorded at its carrying value. For the period from February 19, 2021 to September 30, 2021, the Company recorded adjustments to the value of non-controlling interest as presented in the table below: (In thousands) Non-controlling interest Balance - February 19, 2021 $ — Reclassification from temporary equity (1) 202,496 Conversion of Class B common stock to Class A common stock (1,721) Net income attributable to non-controlling interest (2) 1,553 Distribution to holders of non-controlling interest declared (3,447) Balance - March 31, 2021 $ 198,881 Conversion of Class B common stock to Class A common stock (21,257) Net income attributable to non-controlling interest 4,138 Distribution to holders of non-controlling interest declared (4,449) Balance - June 30, 2021 $ 177,313 Conversion of Class B common stock to Class A common stock (1,698) Net income attributable to non-controlling interest 4,698 Distribution to holders of non-controlling interest declared (4,708) Balance - September 30, 2021 $ 175,605 (1) Represents the February 19, 2021, redemption value of temporary equity, prior to its reclassification to non-controlling interest. Based on 13,167,687 shares of Class B common stock outstanding and Class A common stock 10-day volume-weighted average closing price of $15.38 at February 18, 2021. (2) Net income attributable to non-controlling interest includes the period from February 19, 2021 through March 31, 2021.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	Share-Based Compensation Long Term Incentive Plan In connection with the IPO, Brigham Minerals adopted the Brigham Minerals, Inc. 2019 Long Term Incentive Plan (“LTIP”) for employees, consultants and directors who perform services for Brigham Minerals. The LTIP provides for issuance of awards based on shares of Class A common stock. Brigham Minerals has issued restricted stock awards ("RSAs"), restricted stock units subject to time-based vesting ("RSUs") and restricted stock units subject to performance-based vesting ("PSUs") under the LTIP. The shares to be delivered under the LTIP shall be made available from (i) authorized but unissued shares, (ii) shares held as treasury stock or (iii) previously issued shares reacquired by Brigham Minerals including shares purchased on the open market. A total of 5,999,600 shares of Class A common stock have been authorized for issuance under the LTIP. At September 30, 2021, 2,521,992 shares of Class A common stock remained available for future grants. Currently, all RSAs, RSUs and PSUs granted under the LTIP are entitled to receive dividends (in the case of RSAs) or have dividend equivalent rights (“DERs”), which entitle holders of RSUs and PSUs to the same dividend value per share as holders of the Company's Class A common stock. Such dividends and DERs are subject to the same vesting and other terms and conditions as the corresponding unvested RSAs, RSUs, and PSUs. Dividends and DERs are accumulated and paid when the underlying shares vest. The fair value of the RSA awards granted with the right to receive dividends and RSU awards granted with the right to receive DERs are generally based on the trading price of the Company’s Class A common stock as of the date of grant. Brigham Minerals accounts for the awards granted under the LTIP as compensation cost measured at the fair value of the award on the date of grant. Brigham Minerals accounts for forfeitures as they occur. The Company has granted RSAs to certain employees, which are grants of shares of Class A common stock subject to a risk of forfeiture and restrictions on transferability. The share-based compensation expense of such RSAs was determined using the closing price of Class A common stock on April 23, 2019, the date of grant, of $21.25. The RSAs generally vested in one-third increments on each of April 23, 2020 and 2021 and will vest as to the final one-third increment on April 23, 2022 and are subject to restrictions on transfer and are generally subject to a risk of forfeiture if the award recipient ceases providing services to Brigham Minerals prior to the lapse of such restrictions. The following table summarizes activity related to RSAs for the nine months ended September 30, 2021. Restricted Stock Awards Number of RSAs Grant Date Fair Value Unvested at January 1, 2021 68,293 $ 21.25 Vested (31,882) $ 21.25 Forfeited (5,978) $ 21.25 Unvested at September 30, 2021 30,433 $ 21.25 The Company has granted RSUs to certain employees and directors, which represent the right to receive shares of Class A common stock at the end of the vesting period in an amount equal to the number of RSUs that vest. The RSUs issued to employees generally vest in one-third increments over a three-year period and RSUs issued to directors vest in one year from the date of grant. RSUs are subject to restrictions on transfer and are generally subject to a risk of forfeiture if the award recipient ceases providing services to Brigham Minerals prior to the date the award vests. The share-based compensation cost of such RSUs was determined using the closing price on the applicable date of grant, which is then applied to the total number of RSUs granted. During the nine months ended September 30, 2021, the Company granted 583,998 RSUs. The share-based compensation expense of such RSUs was determined using the weighted-average grant date fair value of $16.31. The following table summarizes activity related to RSUs for the nine months ended September 30, 2021. Restricted Stock Units Number of RSUs Weighted-Average Grant Date Fair Value Unvested at January 1, 2021 562,871 $ 17.81 Granted 583,998 $ 16.31 Vested (75,499) $ 12.94 Forfeited (14,316) $ 18.49 Unvested at September 30, 2021 1,057,054 $ 17.32 The Company has granted PSUs to certain officers and managers, which vest based on continuous employment and satisfaction of a market condition based on the absolute total shareholder return of the Company’s common stock, including paid dividends, over an approximate three-year performance period. The terms and conditions of the PSUs allow for vesting of the awards ranging between 0% (or forfeiture) and 200% of target. Expense related to these PSUs is recognized on a straight-line basis over the length of the applicable performance period. All compensation cost related to the market-based awards will be recognized if the requisite service period is fulfilled, even if the market condition is not achieved. The grant date fair value of such PSUs was determined using a Monte Carlo simulation model that utilizes multiple input variables that determine the probability of satisfying the market condition stipulated in the award to calculate the fair value of the award. Expected volatilities in the model were estimated on the basis of historical volatility of a group of publicly traded oil and gas companies with a performance period of approximately three years. The risk-free interest rate was based on the United States Treasury rate for a term commensurate with the expected life of the grant. The following table summarizes activity related to PSUs for the nine months ended September 30, 2021. During the nine months ended September 30, 2021, the Company granted 472,377 PSUs. The share-based compensation expense of such PSUs was determined using the valuation date of May 17, 2021, the date of grant, with a fair value of $17.02. In addition, no PSUs became vested or were forfeited during the nine months ended September 30, 2021: Performance-Based Restricted Stock Units Target PSUs Grant Date Fair Value Unvested at January 1, 2021 1,187,811 $ 10.07 Granted 472,377 $ 17.02 Unvested at September 30, 2021 1,660,188 $ 12.05 Share-Based Compensation Expense Share-based compensation expense is included in general and administrative expense in the Company's condensed consolidated statements of operations included within this Quarterly Report. Share-based compensation expense recorded for each type of share-based compensation award for the three and nine months ended September 30, 2021 and 2020 is summarized in the table below. Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2021 2020 2021 2020 Incentive Units (1) $ 178 $ 178 $ 534 $ 534 RSAs (1) (4) 163 186 460 1,076 RSUs (1) 2,525 2,052 7,602 5,486 PSUs (2) 1,803 1,102 4,416 3,156 Capitalized share-based compensation (3) (1,987) (1,562) (5,475) (4,560) Total share-based compensation expense $ 2,682 $ 1,956 $ 7,537 $ 5,692 (1) Share-based compensation expense relating to Incentive Units, RSAs and RSUs with ratable vesting is recognized on a straight-line basis over the requisite service period for the entire award. (2) Share-based compensation expense relating to PSUs with cliff-vesting is recognized on a straight-line basis over the performance period for the entire award. (3) During the three and nine months ended September 30, 2021, Brigham Minerals capitalized $1.5 million and $3.0 million, respectively, of share-based compensation cost to unevaluated property and $0.5 million and $2.5 million, respectively, of share-based compensation cost to evaluated property. During the three and nine months ended September 30, 2020, Brigham Minerals capitalized $0.8 million and $2.6 million, respectively, of share-based compensation cost to unevaluated property and $0.7 million and $1.9 million, respectively, of share-based compensation cost to evaluated property. (4) During the nine months ended September 30, 2020, share-based compensation cost included $0.5 million associated with the accelerated vesting of 30,174 RSAs for certain employees who retired in February 2020. Future Share-Based Compensation Expense The following table reflects the future share-based compensation expense expected to be recorded for the share-based compensation awards that were outstanding at September 30, 2021, a portion of which will be capitalized: Incentive Units RSAs RSUs PSUs Total Year (In thousands) 2021 $ 178 $ 163 $ 2,526 $ 1,875 $ 4,742 2022 534 200 5,815 4,029 10,578 2023 — — 2,822 3,063 5,885 Total $ 712 $ 363 $ 11,163 $ 8,967 $ 21,205

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company evaluates and updates its annual effective income tax rate on a quarterly basis under the effective tax rate method based on applying an anticipated annual effective rate to its year-to-date income, except for discrete items. Consequently, based upon the mix and timing of our actual earnings compared to annual projections, our effective tax rate may vary quarterly and may make comparisons not meaningful. Income taxes for discrete items are computed and recorded in the period that the specific transaction occurs. Income tax expense was as follows for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except for tax rate) 2021 2020 2021 2020 Income tax expense (benefit) $ 4,214 $ (2,982) $ 10,717 $ (2,250) Effective tax rate 18.2 % 18.6 % 18.8 % 16.9 %

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments Brigham Minerals leases office space under operating leases. Rent expense for the three months ended September 30, 2021 and 2020 was $0.3 million and $0.3 million, respectively, and $1.0 million and $0.8 million for the nine months ended September 30, 2021 and 2020, respectively. Future minimum lease commitments under non-cancelable operating leases at September 30, 2021 are presented below: (In thousands) Commitment Year 2021 (remainder of) $ 321 2022 1,310 2023 1,347 2024 1,384 2025 1,419 Thereafter 2,251 Total $ 8,032 Contingencies

COVID-19 Pandemic

COVID-19 Pandemic	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
COVID-19 Pandemic	COVID-19 Pandemic COVID-19 Pandemic and Impact on Global Demand for Oil and Natural Gas The ongoing global spread of a novel strain of coronavirus (SARS-Cov-2), which causes COVID-19, remains a global pandemic, however, with the gradual easing of COVID-19 lockdown restrictions globally, primarily due to the increase in accessibility of vaccines, stability in the markets and demand for the commodities produced by the oil and natural gas industry have continued to improve. In addition, commodity prices for the first nine months of 2021 have improved substantially from historic lows in 2020 and the current outlook on commodity prices is generally favorable, especially in light of current supply constraints. However, the duration of COVID-19 pandemic and potential future impact to our business and industry continues to be unpredictable and dynamic.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 29, 2021, Brigham Minerals divested certain undeveloped assets in the Anadarko Basin and received cash of approximately $9.2 million. On November 2, 2021, the Board of Directors of Brigham Minerals declared a dividend of $0.40 per share of Class A common stock payable on December 1, 2021, to shareholders of record at the close of business on November 24, 2021. As of September 30, 2021, the borrowing base on our revolving credit facility was $165.0 million with outstanding borrowings of $53.0 million. Associated with the Company's Fall 2021 semi-annual borrowing base redetermination under its revolving credit facility, the Company estimates the borrowing base will be increased. See "Item 2—Management’s Discussion and Analysis of Financial Condition and Results of Operations—Overview—Financial and Operational Overview” for further discussion.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Accounting, Policy	Basis of Presentation The accompanying unaudited condensed consolidated interim financial statements of Brigham Minerals have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), except that, in accordance with the instructions to Form 10-Q, they do not include all of the notes required for financial statements prepared in conformity with U.S. GAAP. Accordingly, the accompanying unaudited interim financial statements should be read in conjunction with our audited financial statements included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission (the "SEC") on February 25, 2021 (the "Annual Report"). The unaudited interim financial statements reflect all normal recurring adjustments that, in the opinion of management, are necessary for a fair representation. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the entire fiscal year ending December 31, 2021. Brigham Minerals operates in one segment: oil and natural gas exploration and production.
Use of Estimates	Use of Estimates These condensed consolidated financial statements and related notes are presented in accordance with GAAP. Preparation in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in the condensed consolidated financial statements and accompanying notes. Although management believes these estimates are reasonable, actual results could differ from these estimates. Changes in estimates are recorded prospectively. The accompanying condensed consolidated financial statements are based on a number of significant estimates including quantities of oil, natural gas and NGL reserves that are the basis for the calculations of depreciation, depletion, amortization (“DD&A”) and impairment of oil and natural gas properties. Reservoir engineering is a subjective process of estimating underground accumulations of oil and natural gas and there are numerous uncertainties inherent in estimating quantities of proved oil and natural gas reserves. The accuracy of any reserve estimate is a function of the quality of available data and of engineering
Recently Issued Accounting Standards Not Yet Adopted	Recently Issued Accounting Standards Not Yet Adopted Brigham Minerals’ status as an emerging growth company ("EGC") under Section 107 of the Jumpstart Our Business Startups Act of 2012 permits it to delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. Brigham Minerals originally chose to take advantage of this extended transition period. Brigham Minerals will become a large accelerated filer as of December 31, 2021 and cease to be an EGC. As a result, Brigham Minerals will be required to accelerate the adoption of new or revised accounting standards as indicated on the dates below. In February 2016, the Financial Accounting Standards Board (the "FASB") issued ASU 2016-02 Leases (Topic 842), which requires all leasing arrangements to be presented in the balance sheet as liabilities along with a corresponding asset. ASU 2016-02 does not apply to leases of mineral rights to explore for or use crude oil and natural gas. The ASU will replace most existing lease guidance in GAAP when it becomes effective. In January 2018, the FASB issued ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842, to provide an optional practical expedient to not evaluate existing or expired land easements that were not previously accounted for as leases under Topic 840. In July 2018, the FASB issued ASU 2018-11 Leases (Topic 842): Targeted Improvements, which provides for another transition method, in addition to the existing transition method, by allowing entities to initially apply the new leases standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption (i.e. comparative periods presented in the financial statements will continue to be in accordance with current GAAP (Topic 840, Leases)). The new standard becomes effective for us during the fiscal year ending December 31, 2021 and we will use January 1, 2021, the beginning of the period of adoption, as the date of initial application. We will adopt ASU 2016-02 using a modified retrospective approach and will recognize a right-of-use ("ROU") asset and lease liability on the date of initial application. We are applying the following practical expedients as provided in the standards update: • an accounting policy election to not apply the recognition requirements in the new standards update to short-term leases (a lease that at commencement date has a lease term of twelve months or less) and not to separate non-lease components from lease components for all asset classes; and • a package of practical expedients to not reassess whether a contract contains a lease, lease classification and initial direct costs prior to January 1, 2021; and • a practical expedient to not reassess certain land easements in existence prior to January 1, 2021. We have determined that the extent of the cumulative impact of adoption in the opening balance of retained earnings as of January 1, 2021 was immaterial and we expect to record a ROU asset and a corresponding lease liability of approximately $8.0 million in the condensed consolidated balance sheets at the date of adoption. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses. In May 2019, ASU 2016-13 was subsequently amended by ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments—Credit Losses and ASU 2019-05, Financial Instruments—Credit Losses (Topic 326): Targeted Transition Relief. ASU 2016-13, as amended, affects trade receivables, financial assets and certain other instruments that are not measured at fair value through net income. This ASU

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Schedule of Accounts Receivable	As of September 30, 2021 and December 31, 2020, accounts receivable was comprised of the following: (In thousands) September 30, 2021 December 31, 2020 Accounts receivable Oil and gas sales $ 27,947 $ 17,413 Reserve for bad debt (762) (855) Other 1,301 1,074 Total accounts receivable $ 28,486 $ 17,632
Schedules of Concentration of Risk, by Risk Factor	Concentrations of oil and gas sales to significant customers (operators) are presented in the table below. Three Months Ended September 30, Nine Months Ended September 30, Customer (Operator) Name 2021 2020 2021 2020 Exxon Mobil Corp 12 % 10 % 14 % 9 % Continental Resources Inc. 11 % 12 % 11 % 9 % Occidental Petroleum Corp 10 % 11 % 11 % 13 % Royal Dutch Shell PLC 6 % 9 % 8 % 13 %

Oil and Gas Properties (Tables)

Oil and Gas Properties (Tables)	9 Months Ended
	Sep. 30, 2021
Extractive Industries [Abstract]
Schedule of Oil and Gas Properties	Oil and gas properties as of the dates shown consisted of the following: (In thousands) September 30, 2021 December 31, 2020 Oil and gas properties, at cost, using the full cost method of accounting: Unevaluated property $ 332,165 $ 325,091 Evaluated property 535,795 488,301 Total oil and gas properties, at cost 867,960 813,392 Less accumulated depreciation, depletion, and amortization (220,942) (189,546) Total oil and gas properties, net $ 647,018 $ 623,846

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	9 Months Ended
	Sep. 30, 2021
Extractive Industries [Abstract]
Schedule of Asset Acquisitions	During the nine months ended September 30, 2021 and 2020, Brigham Minerals entered into a number of acquisitions of mineral and royalty interests from various sellers in Texas, Oklahoma, Colorado, New Mexico, and North Dakota, as reflected in the tables below. The change in the oil and natural gas property balance is comprised of payments for acquisitions of minerals, land brokerage costs and capitalized general and administrative expenses that for the nine months ended September 30, 2021 were funded with our retained operating cash flow, proceeds from asset sales and our revolving credit facility (as hereinafter defined). The changes in the oil and natural gas property balance for the nine months ended September 30, 2020 were partially funded with proceeds from the December 2019 Offering as well as our retained cash flow and our revolving credit facility. During the three and nine months ended September 30, 2021, Brigham Minerals divested certain non-core, undeveloped acreage in Oklahoma and received cash of $4.4 million. Oil and Gas Properties Acquired Cash Consideration Paid (In thousands) Evaluated Unevaluated Quarter Ended March 31, 2021 $ 9,073 $ 12,776 $ 21,849 Quarter Ended June 30, 2021 $ 8,842 $ 5,594 $ 14,436 Quarter Ended September 30, 2021 $ 2,732 $ 10,077 $ 12,809 $ 20,647 $ 28,447 $ 49,094 Oil and Gas Properties Acquired Cash Consideration Paid (In thousands) Evaluated Unevaluated Quarter Ended March 31, 2020 $ 9,471 $ 15,947 $ 25,418 Quarter Ended June 30, 2020 $ 805 $ 2,493 $ 3,298 Quarter Ended September 30, 2020 $ 6,881 $ 10,499 $ 17,380 Total $ 17,157 $ 28,939 $ 46,096

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table reflects the allocation of net income to common shareholders and EPS computations for the period indicated based on a weighted average number of common stock outstanding for the period: Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except per share data) 2021 2020 2021 2020 Basic EPS Numerator: Basic net income (loss) attributable to Brigham Minerals, Inc. shareholders $ 14,213 $ (9,465) $ 33,997 $ (8,809) Denominator: Basic weighted average shares outstanding 45,198 40,124 44,216 36,475 Basic EPS attributable to Brigham Minerals, Inc. shareholders $ 0.31 $ (0.24) $ 0.77 $ (0.24) Diluted EPS Numerator: Basic net income (loss) attributable to Brigham Minerals, Inc. shareholders $ 14,213 $ (9,465) $ 33,997 $ (8,809) Effects of dilutive securities — — — — Diluted net income (loss) attributable to Brigham Minerals, Inc. shareholders $ 14,213 $ (9,465) $ 33,997 $ (8,809) Denominator: Basic weighted average shares outstanding 45,198 40,124 44,216 36,475 Effects of dilutive securities: Unvested Equity Awards 690 — 840 — Diluted weighted average shares outstanding 45,888 40,124 45,056 36,475 Diluted EPS attributable to Brigham Minerals, Inc. shareholders $ 0.31 $ (0.24) $ 0.75 $ (0.24)

Temporary equity and Noncontr_2

Temporary equity and Noncontrolling Interest (Tables)	9 Months Ended
	Sep. 30, 2021
Temporary Equity and Noncontrolling Interest Disclosure [Abstract]
Temporary Equity	For the period from January 1, 2021 to February 18, 2021, Brigham Minerals recorded adjustments to the value of temporary equity as presented in the table below: (In thousands) Temporary Equity Adjustments Balance - December 31, 2020 (1) $ 146,280 Net income attributable to temporary equity 1,922 Adjustment of temporary equity to redemption value 54,294 Reclassification to non-controlling interest (2) $ (202,496) Balance - February 18, 2021 $ — (1) Based on 13,167,687 shares of Class B common stock outstanding and Class A common stock 10-day volume-weighted average closing price of $11.11 at December 31, 2020. (2) Based on 13,167,687 shares of Class B common stock outstanding and Class A common stock 10-day volume-weighted average closing price of $15.38 at February 18, 2021. The February 18, 2021 redemption value of temporary equity became the carrying value of non-controlling interest, as discussed below.
Schedule Of Adjustments To Noncontrolling Interests	For the period from February 19, 2021 to September 30, 2021, the Company recorded adjustments to the value of non-controlling interest as presented in the table below: (In thousands) Non-controlling interest Balance - February 19, 2021 $ — Reclassification from temporary equity (1) 202,496 Conversion of Class B common stock to Class A common stock (1,721) Net income attributable to non-controlling interest (2) 1,553 Distribution to holders of non-controlling interest declared (3,447) Balance - March 31, 2021 $ 198,881 Conversion of Class B common stock to Class A common stock (21,257) Net income attributable to non-controlling interest 4,138 Distribution to holders of non-controlling interest declared (4,449) Balance - June 30, 2021 $ 177,313 Conversion of Class B common stock to Class A common stock (1,698) Net income attributable to non-controlling interest 4,698 Distribution to holders of non-controlling interest declared (4,708) Balance - September 30, 2021 $ 175,605 (1) Represents the February 19, 2021, redemption value of temporary equity, prior to its reclassification to non-controlling interest. Based on 13,167,687 shares of Class B common stock outstanding and Class A common stock 10-day volume-weighted average closing price of $15.38 at February 18, 2021. (2) Net income attributable to non-controlling interest includes the period from February 19, 2021 through March 31, 2021.

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Restricted Incentive Unit Activity	The following table summarizes activity related to RSAs for the nine months ended September 30, 2021. Restricted Stock Awards Number of RSAs Grant Date Fair Value Unvested at January 1, 2021 68,293 $ 21.25 Vested (31,882) $ 21.25 Forfeited (5,978) $ 21.25 Unvested at September 30, 2021 30,433 $ 21.25 The following table summarizes activity related to RSUs for the nine months ended September 30, 2021. Restricted Stock Units Number of RSUs Weighted-Average Grant Date Fair Value Unvested at January 1, 2021 562,871 $ 17.81 Granted 583,998 $ 16.31 Vested (75,499) $ 12.94 Forfeited (14,316) $ 18.49 Unvested at September 30, 2021 1,057,054 $ 17.32 The following table summarizes activity related to PSUs for the nine months ended September 30, 2021. During the nine months ended September 30, 2021, the Company granted 472,377 PSUs. The share-based compensation expense of such PSUs was determined using the valuation date of May 17, 2021, the date of grant, with a fair value of $17.02. In addition, no PSUs became vested or were forfeited during the nine months ended September 30, 2021: Performance-Based Restricted Stock Units Target PSUs Grant Date Fair Value Unvested at January 1, 2021 1,187,811 $ 10.07 Granted 472,377 $ 17.02 Unvested at September 30, 2021 1,660,188 $ 12.05
Schedule of Share-Based Compensation Expense	Share-based compensation expense recorded for each type of share-based compensation award for the three and nine months ended September 30, 2021 and 2020 is summarized in the table below. Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2021 2020 2021 2020 Incentive Units (1) $ 178 $ 178 $ 534 $ 534 RSAs (1) (4) 163 186 460 1,076 RSUs (1) 2,525 2,052 7,602 5,486 PSUs (2) 1,803 1,102 4,416 3,156 Capitalized share-based compensation (3) (1,987) (1,562) (5,475) (4,560) Total share-based compensation expense $ 2,682 $ 1,956 $ 7,537 $ 5,692 (1) Share-based compensation expense relating to Incentive Units, RSAs and RSUs with ratable vesting is recognized on a straight-line basis over the requisite service period for the entire award. (2) Share-based compensation expense relating to PSUs with cliff-vesting is recognized on a straight-line basis over the performance period for the entire award. (3) During the three and nine months ended September 30, 2021, Brigham Minerals capitalized $1.5 million and $3.0 million, respectively, of share-based compensation cost to unevaluated property and $0.5 million and $2.5 million, respectively, of share-based compensation cost to evaluated property. During the three and nine months ended September 30, 2020, Brigham Minerals capitalized $0.8 million and $2.6 million, respectively, of share-based compensation cost to unevaluated property and $0.7 million and $1.9 million, respectively, of share-based compensation cost to evaluated property. (4) During the nine months ended September 30, 2020, share-based compensation cost included $0.5 million associated with the accelerated vesting of 30,174 RSAs for certain employees who retired in February 2020. Future Share-Based Compensation Expense The following table reflects the future share-based compensation expense expected to be recorded for the share-based compensation awards that were outstanding at September 30, 2021, a portion of which will be capitalized: Incentive Units RSAs RSUs PSUs Total Year (In thousands) 2021 $ 178 $ 163 $ 2,526 $ 1,875 $ 4,742 2022 534 200 5,815 4,029 10,578 2023 — — 2,822 3,063 5,885 Total $ 712 $ 363 $ 11,163 $ 8,967 $ 21,205

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Schedule of Income Tax Expense	Income tax expense was as follows for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except for tax rate) 2021 2020 2021 2020 Income tax expense (benefit) $ 4,214 $ (2,982) $ 10,717 $ (2,250) Effective tax rate 18.2 % 18.6 % 18.8 % 16.9 %

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum lease commitments under non-cancelable operating leases at September 30, 2021 are presented below: (In thousands) Commitment Year 2021 (remainder of) $ 321 2022 1,310 2023 1,347 2024 1,384 2025 1,419 Thereafter 2,251 Total $ 8,032

Business and Basis of Present_2

Business and Basis of Presentation (Details)	9 Months Ended
	Sep. 30, 2021segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Sale of stock, ownership percentage	79.70%
Number of operating segments	1

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)customer	Sep. 30, 2020USD ($)customer	Sep. 30, 2021USD ($)customer	Sep. 30, 2020USD ($)customer	Dec. 31, 2020	Jan. 01, 2021USD ($)
Schedule of Equity Method Investments [Line Items]
Sale of stock, ownership percentage			79.70%
Bad debt expense			$ 144	$ 299
Concentration risk, number of customers | customer	140	150	140	150
ROU asset						$ 8,000
Lease liability						$ 8,000
Top Ten Operators | Revenue Benchmark | Customer Concentration Risk
Schedule of Equity Method Investments [Line Items]
Concentration risk (as a percentage)	66.00%		66.00%	63.00%
General and Administrative Expense
Schedule of Equity Method Investments [Line Items]
Bad debt expense	$ 100	$ 0	$ 100	$ 300
Brigham LLC
Schedule of Equity Method Investments [Line Items]
Sale of stock, ownership percentage	79.70%	76.70%	79.70%	76.70%
Brigham LLC | Existing Owners of Brigham Minerals
Schedule of Equity Method Investments [Line Items]
Sale of stock, ownership percentage			20.30%		23.20%

Summary of Significant Accounts

Summary of Significant Accounts Policies - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Oil and gas sales	$ 27,947	$ 17,413
Reserve for bad debt	(762)	(855)
Other	1,301	1,074
Total accounts receivable	$ 28,486	$ 17,632

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - Revenue Benchmark - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Exxon Mobil Corp
Concentration Risk [Line Items]
Concentration risk (as a percentage)	12.00%	10.00%	14.00%	9.00%
Continental Resources, Inc.
Concentration Risk [Line Items]
Concentration risk (as a percentage)	11.00%	12.00%	11.00%	9.00%
Occidental Petroleum Corp
Concentration Risk [Line Items]
Concentration risk (as a percentage)	10.00%	11.00%	11.00%	13.00%
Royal Dutch Shell PLC
Concentration Risk [Line Items]
Concentration risk (as a percentage)	6.00%	9.00%	8.00%	13.00%

Oil and Gas Properties - Narrat

Oil and Gas Properties - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)$ / Boe	Sep. 30, 2020USD ($)$ / Boe	Sep. 30, 2021USD ($)$ / Boe	Sep. 30, 2020USD ($)$ / Boe
Extractive Industries [Abstract]
Capitalized costs	$ 3,100,000	$ 2,600,000	$ 8,800,000	$ 7,600,000
Depletion expense	$ 8,600,000	$ 11,600,000	$ 27,000,000	$ 35,000,000
Average depletion of proved properties (in dollars per Boe) | $ / Boe	10.34	13.58	10.98	13.40
Impairment of oil and gas properties	$ 0	$ 18,905,000	$ 0	$ 18,905,000

Oil and Gas Properties - Schedu

Oil and Gas Properties - Schedule of Oil and Gas Properties (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Oil and gas properties, at cost, using the full cost method of accounting:
Unevaluated property	$ 332,165	$ 325,091
Evaluated property	535,795	488,301
Total oil and gas properties, at cost	867,960	813,392
Less accumulated depreciation, depletion, and amortization	(220,942)	(189,546)
Total oil and gas properties, net	$ 647,018	$ 623,846

Acquisitions and Divestitures -

Acquisitions and Divestitures - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Extractive Industries [Abstract]
Proceeds from divested acreage	$ 4.4	$ 4.4

Acquisitions and Divestitures_2

Acquisitions and Divestitures - Schedule of Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Extractive Industries [Abstract]
Assets acquired, evaluated	$ 2,732	$ 8,842	$ 9,073	$ 6,881	$ 805	$ 9,471	$ 20,647	$ 17,157
Assets acquired, unevaluated	10,077	5,594	12,776	10,499	2,493	15,947	28,447	28,939
Cash consideration paid	$ 12,809	$ 14,436	$ 21,849	$ 17,380	$ 3,298	$ 25,418	$ 49,094	$ 46,096

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Oil and gas sales	$ 27,947	$ 17,413

Long-Term Debt (Details)

Long-Term Debt (Details) - Revolving Credit Facility $ in Millions	Jul. 07, 2021	Sep. 30, 2021USD ($)	Sep. 30, 2021USD ($)	Jul. 06, 2021USD ($)
Debt Instrument [Line Items]
Line of credit, borrowing base		$ 165	$ 165	$ 135
Maximum leverage ratio	3
Minimum liquidity ratio	0.10
Weighted average interest rate (as a percent)		2.36%	2.13%
Line of credit, outstanding borrowings		$ 53	$ 53
Line of credit, availability for future borrowings		$ 112	$ 112
Debt instrument, covenant, current ratio, minimum	1
Debt instrument, covenant, total net funded debt to consolidated EBITDA ratio, maximum	3.50
Interest period, one month
Debt Instrument [Line Items]
Interest period (in months)	1 month
Interest period, two months
Debt Instrument [Line Items]
Interest period (in months)	2 months
Interest period, three months
Debt Instrument [Line Items]
Interest period (in months)	3 months
Interest period, six months
Debt Instrument [Line Items]
Interest period (in months)	6 months
Interest period, twelve months
Debt Instrument [Line Items]
Interest period (in months)	12 months
Minimum
Debt Instrument [Line Items]
Commitment fee, percentage	0.375%
Minimum | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.00%
Minimum | Adjusted Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Maximum
Debt Instrument [Line Items]
Commitment fee, percentage	0.50%
Maximum | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.00%
Maximum | Adjusted Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.00%

Equity - Narrative (Details)

Equity - Narrative (Details)	9 Months Ended
	Sep. 30, 2021voteshares	Sep. 30, 2020shares	Dec. 31, 2020shares
Class of Stock [Line Items]
Treasury stock (in shares)	436,630		436,630
Performance-Based Restricted Stock Units
Class of Stock [Line Items]
Shares granted during period (in shares)		1,187,811
Common Class A
Class of Stock [Line Items]
Common stock outstanding (in shares)	45,245,341		43,558,494
Number of votes per share (vote) | vote	1
Treasury stock (in shares)	436,630
Common Class B
Class of Stock [Line Items]
Common stock outstanding (in shares)	11,541,211		13,167,687
Number of votes per share (vote) | vote	1

Equity - Schedule of Earnings p

Equity - Schedule of Earnings per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Basic net income (loss) attributable to Brigham Minerals, Inc. shareholders	$ 14,213	$ (9,465)	$ 33,997	$ (8,809)
Denominator:
Basic weighted average shares outstanding (in shares)	45,198	40,124	44,216	36,475
Basic EPS attributable to Brigham Minerals, Inc. shareholders (in dollars per share)	$ 0.31	$ (0.24)	$ 0.77	$ (0.24)
Numerator:
Effects of dilutive securities	$ 0	$ 0	$ 0	$ 0
Diluted net income (loss) attributable to Brigham Minerals, Inc. shareholders	$ 14,213	$ (9,465)	$ 33,997	$ (8,809)
Denominator:
Basic weighted average shares outstanding (in shares)	45,198	40,124	44,216	36,475
Effects of dilutive securities:
Unvested Equity Awards (in shares)	690	0	840	0
Diluted weighted average shares outstanding (in shares)	45,888	40,124	45,056	36,475
Diluted EPS attributable to Brigham Minerals, Inc. shareholders (in dollars per share)	$ 0.31	$ (0.24)	$ 0.75	$ (0.24)

Temporary equity and Noncontr_3

Temporary equity and Noncontrolling Interest - Narrative (Details)	Apr. 17, 2019shares	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021vote	Sep. 30, 2020	Dec. 31, 2020
Temporary Equity [Line Items]
Sale of stock, ownership percentage				79.70%
Common Class B
Temporary Equity [Line Items]
Number of votes per share (vote)				1
Common Class A
Temporary Equity [Line Items]
Number of votes per share (vote)				1
Conversion of stock, shares received (in shares) | shares	1
Existing Owners of Brigham Minerals | Common Class B
Temporary Equity [Line Items]
Number of votes per share (vote)				1
Brigham LLC
Temporary Equity [Line Items]
Sale of stock, ownership percentage		79.70%	76.70%	79.70%	76.70%
Brigham LLC | Existing Owners of Brigham Minerals
Temporary Equity [Line Items]
Sale of stock, ownership percentage				20.30%		23.20%

Temporary equity and Noncontr_4

Temporary equity and Noncontrolling Interest - Schedule of Temporary Equity Adjustments (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended
	Mar. 31, 2021	Feb. 18, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Feb. 19, 2021	Dec. 31, 2020
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance		$ 146,280	$ 146,280
Net income attributable to temporary equity		1,922
Adjustment of temporary equity to redemption value		54,294	54,294	$ (37,445)	$ 37,445	$ (206,017)
Reclassification to non controlling interest	$ (202,496)	(202,496)	$ (202,496)
Ending balance		$ 0
Common Class B
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary equity (in shares)							13,167,687	13,167,687
Temporary equity, share price (in dollars per share)							$ 15.38	$ 11.11

Temporary equity and Noncontr_5

Temporary equity and Noncontrolling Interest - Schedule of Noncontrolling Interest (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended				9 Months Ended
	Mar. 31, 2021	Feb. 18, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Feb. 19, 2021	Dec. 31, 2020
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance	$ 0	$ 0	$ 177,313	$ 198,881	$ 0		$ 0
Reclassification from temporary equity to non-controlling interest	202,496	$ 202,496			202,496
Conversion of shares of Class B Common Stock to Class A Common Stock	(1,721)		(1,698)	(21,257)
Net income attributable to non-controlling interest	1,553		4,698	4,138		$ (3,552)	12,311	$ (2,223)
Distribution to holders of non-controlling interest declared	(3,447)		(4,708)	(4,449)
Ending balance	$ 198,881		$ 175,605	$ 177,313	$ 198,881		$ 175,605
Common Class B
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Temporary equity (in shares)									13,167,687	13,167,687
Temporary equity, share price (in dollars per share)									$ 15.38	$ 11.11

Share-Based Compensation - Narr

Share-Based Compensation - Narrative (Details) - $ / shares	Apr. 23, 2019	Sep. 30, 2021	Sep. 30, 2020
RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period, grant date fair value (in dollars per share)	$ 21.25
RSAs | First anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage at grant (as a percent)		33.34%
RSAs | Second anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage at grant (as a percent)		33.34%
RSAs | Third anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage at grant (as a percent)		33.34%
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period, grant date fair value (in dollars per share)		$ 16.31
Shares granted during period (in shares)		583,998
RSUs | First anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage at grant (as a percent)		33.34%
RSUs | Second anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage at grant (as a percent)		33.34%
RSUs | Third anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage at grant (as a percent)		33.34%
RSUs | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
RSUs | Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		1 year
Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period, grant date fair value (in dollars per share)		$ 17.02
Shares granted during period (in shares)			1,187,811
Period of expense recognition		3 years
Performance-Based Restricted Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage at grant (as a percent)		0.00%
Performance-Based Restricted Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage at grant (as a percent)		200.00%
Target PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period (in shares)		472,377
Long Term Incentive Plan | Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		5,999,600
Shares available for future grants (in shares)		2,521,992

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Restricted Stock Unit Activity (Details) - $ / shares	Apr. 23, 2019	Sep. 30, 2021	Sep. 30, 2020
RSAs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Beginning balance (in shares)		68,293
Vested (in shares)		(31,882)
Forfeited (in shares)		(5,978)
Ending balance (in shares)		30,433
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance (in dollars per share)		$ 21.25
Grant-date fair value, Granted (in dollars per share)	$ 21.25
Grant-date fair value, Vested (in dollars per share)		21.25
Grant-date fair value, Forfeited (in dollars per share)		21.25
Ending balance (in dollars per share)		$ 21.25
RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Beginning balance (in shares)		562,871
Granted (in shares)		583,998
Vested (in shares)		(75,499)
Forfeited (in shares)		(14,316)
Ending balance (in shares)		1,057,054
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance (in dollars per share)		$ 17.81
Grant-date fair value, Granted (in dollars per share)		16.31
Grant-date fair value, Vested (in dollars per share)		12.94
Grant-date fair value, Forfeited (in dollars per share)		18.49
Ending balance (in dollars per share)		$ 17.32
Target PSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Beginning balance (in shares)		1,187,811
Granted (in shares)		472,377
Ending balance (in shares)		1,660,188
Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Granted (in shares)			1,187,811
Vested (in shares)		0
Forfeited (in shares)		0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance (in dollars per share)		$ 10.07
Grant-date fair value, Granted (in dollars per share)		17.02
Ending balance (in dollars per share)		$ 12.05

Share-Based Compensation - Sche

Share-Based Compensation - Schedule of Compensation Expense and Future Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized share-based compensation	$ (1,987)	$ (1,562)	$ (5,475)	$ (4,560)
Total share-based compensation expense	2,682	1,956	7,537	5,692
Future share-based compensation expense			21,205
2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			4,742
2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			10,578
2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			5,885
Incentive Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	178	178	534	534
Future share-based compensation expense			712
Incentive Units | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			178
Incentive Units | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			534
Incentive Units | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			0
RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	163	186	460	1,076
Accelerated cost				$ 500
Accelerated vesting of RSAs (in shares)				30,174
Future share-based compensation expense			363
RSAs | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			163
RSAs | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			200
RSAs | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			0
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	2,525	2,052	7,602	$ 5,486
Future share-based compensation expense			11,163
RSUs | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			2,526
RSUs | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			5,815
RSUs | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			2,822
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	1,803	1,102	4,416	3,156
Future share-based compensation expense			8,967
PSUs | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			1,875
PSUs | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			4,029
PSUs | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future share-based compensation expense			3,063
Unevaluated Property
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized share-based compensation	(1,500)	(800)	(3,000)	(2,600)
Evaluated Property
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized share-based compensation	$ (500)	$ (700)	$ (2,500)	$ (1,900)

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Loss Carryforwards [Line Items]
Income tax expense (benefit)	$ 4,214	$ (2,982)	$ 10,717	$ (2,250)
Effective tax rate (as a percent)	18.20%	18.60%	18.80%	16.90%
Sale of stock, ownership percentage			79.70%
Brigham LLC
Operating Loss Carryforwards [Line Items]
Sale of stock, ownership percentage	79.70%	76.70%	79.70%	76.70%

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 300	$ 300	$ 1,000	$ 800
2021 (remainder of)	321		321
2022	1,310		1,310
2023	1,347		1,347
2024	1,384		1,384
2025	1,419		1,419
Thereafter	2,251		2,251
Total	$ 8,032		$ 8,032

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 02, 2021	Oct. 29, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Subsequent Event [Line Items]
Proceeds from divested assets in Stack Basin			$ 4,400						$ 4,400
Cash consideration paid			$ 12,809	$ 14,436	$ 21,849	$ 17,380	$ 3,298	$ 25,418	$ 49,094	$ 46,096
Subsequent Event
Subsequent Event [Line Items]
Proceeds from divested assets in Stack Basin		$ 9,200
Common Class A | Subsequent Event
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 0.40