TETRA (TTI) 10-Q 1 Nov 21 2021 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2021	Oct. 29, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-13455
Entity Registrant Name	TETRA Technologies, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	74-2148293
Entity Address, Address Line One	24955 Interstate 45 North
Entity Address, City or Town	The Woodlands,
Entity Address, Postal Zip Code	77380
Entity Address, State or Province	TX
City Area Code	281
Local Phone Number	367-1983
Title of 12(b) Security	Common Stock
Trading Symbol	TTI
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Common Stock Shares Outstanding		126,940,404
Entity Central Index Key	0000844965
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues from external customers		$ 95,474	$ 73,484	$ 275,124	$ 302,257
Cost of Goods and Services Sold [Abstract]
Depreciation, amortization, and accretion		8,308	9,657	25,495	28,934
Impairment and other charges		0	97	449	97
Insurance recoveries associated with damaged equipment		0	52	110	126
Total cost of revenues		79,727	63,269	235,075	247,194
Gross profit		15,747	10,215	40,049	55,063
General and administrative expense		18,714	16,123	56,077	60,333
Interest expense, net		4,083	4,338	12,373	14,234
Warrants fair value adjustment expense (income)		(3,164)	0	(143)	(327)
Other income, net		(6,968)	(788)	(14,295)	(1,308)
Income (loss) before taxes and discontinued operations		3,082	(9,458)	(13,963)	(17,869)
Provision for income taxes		587	101	2,139	1,877
Income (loss) before discontinued operations		2,495	(9,559)	(16,102)	(19,746)
Total loss from discontinued operations		18	(12,039)	120,882	(49,195)
Net income (loss)		2,513	(21,598)	104,780	(68,941)
(Income) loss attributable to noncontrolling interest	[1]	0	8,296	(306)	32,833
Net income (loss) attributable to TETRA stockholders		$ 2,513	$ (13,302)	$ 104,474	$ (36,108)
Basic net income (loss) per common share:
Income (Loss) from Continuing Operations, Per Basic Share		$ 0.02	$ (0.08)	$ (0.13)	$ (0.16)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share		0	(0.02)	0.96	(0.13)
Net income (loss) attributable to TETRA stockholders, per basic share		$ 0.02	$ (0.10)	$ 0.83	$ (0.29)
Weighted Average Number of Shares Outstanding, Basic		126,733	125,893	126,489	125,789
Diluted net income (loss) per common share:
Income (Loss) from Continuing Operations, Per Diluted Share		$ 0.02	$ (0.08)	$ (0.13)	$ (0.16)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share		0	(0.02)	0.96	(0.13)
Net income (loss) attributable to TETRA stockholders, per diluted share		$ 0.02	$ (0.10)	$ 0.83	$ (0.29)
Weighted Average Number of Shares Outstanding, Diluted		128,694	125,893	126,489	125,789
Product sales
Revenues from external customers		$ 46,340	$ 50,009	$ 153,955	$ 187,475
Cost of Goods and Services Sold [Abstract]
Cost of product sales		31,805	32,342	106,265	122,661
Services
Revenues from external customers		49,134	23,475	121,169	114,782
Cost of Goods and Services Sold [Abstract]
Cost of product sales		$ 39,614	$ 21,225	$ 102,976	$ 95,628
[1]	(Income) loss attributable to noncontrolling interest includes zero and $8,342 loss for the three-month periods ended September 30, 2021 and 2020, respectively, and $333 income and $32,957 loss for the nine-month periods ended September 30, 2021 and 2020, respectively, related to discontinued operations.

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
(Income) loss from discontinued operations attributable to noncontrolling interest	$ 0	$ (8,342)	$ 333	$ (32,957)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,513	$ (21,598)	$ 104,780	$ (68,941)
Foreign currency translation adjustment from continuing operations, net of taxes of $0 in 2021 and 2020	(2,150)	2,874	(2,772)	(2,498)
Comprehensive income (loss)	363	(18,724)	102,008	(71,439)
Comprehensive (income) loss attributable to noncontrolling interest	0	8,229	(306)	32,880
Comprehensive income (loss) attributable to TETRA stockholders	$ 363	$ (10,495)	$ 101,702	$ (38,559)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustment, tax	$ 0	$ 0	$ 0	$ 0

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 41,863	$ 67,252
Restricted cash	0	65
Trade accounts receivable, net of allowances of $414 in 2021 and $6,824 in 2020	79,118	64,078
Inventories	72,286	76,658
Assets of discontinued operations	0	710,006
Prepaid expenses and other current assets	16,121	13,487
Total current assets	209,388	931,546
Property, plant, and equipment:
Land and building	26,405	26,506
Machinery and equipment	343,181	365,296
Automobiles and trucks	16,335	18,446
Chemical plants	61,374	62,714
Construction in progress	4,575	1,526
Total property, plant, and equipment	451,870	474,488
Less accumulated depreciation	(364,522)	(377,632)
Net property, plant, and equipment	87,348	96,856
Other assets:
Patents, trademarks and other intangible assets, net of accumulated amortization of $69,186 in 2021 and $66,078 in 2020	38,071	41,487
Deferred tax assets, net	44	52
Operating lease right-of-use assets	38,795	43,448
Investments	22,412	2,675
Other assets	15,178	16,775
Total other assets	114,500	104,437
Total assets	411,236	1,132,839
Current liabilities:
Trade accounts payable	41,268	22,573
Unearned income	1,432	2,675
Accrued liabilities and other	48,552	38,791
Liabilities of discontinued operations	1,327	734,039
Total current liabilities	92,579	798,078
Long-term debt, net	164,228	199,894
Deferred income taxes	1,817	1,942
Asset retirement obligations	12,840	12,484
Warrants liability	56	198
Operating lease liabilities	33,145	37,569
Other liabilities	6,493	11,612
Total long-term liabilities	218,579	263,699
Commitments and contingencies
Equity:
Common stock, par value 0.01 per share; 250,000,000 shares authorized at September 30, 2021 and December 31, 2020; 130,075,838 shares issued at September 30, 2021 and 128,930,047 shares issued at December 31, 2020	1,301	1,289
Additional paid-in capital	474,544	472,134
Treasury stock, at cost; 3,135,434 shares held at September 30, 2021, and 2,953,976 shares held at December 31, 2020	(19,945)	(19,484)
Accumulated other comprehensive loss	(45,518)	(49,914)
Retained deficit	(309,191)	(413,665)
Total TETRA stockholders’ equity	101,191	(9,640)
Noncontrolling interests	(1,113)	80,702
Total equity	100,078	71,062
Total liabilities and equity	$ 411,236	$ 1,132,839

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Trade accounts receivable, allowances for doubtful accounts	$ 414	$ 6,824
Patents, trademarks, and other intangible assets, accumulated amortization	$ 69,186	$ 66,078
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	130,075,838	128,930,047
Treasury stock, shares held	3,135,434	2,953,976

Consolidated Statement of Equit

Consolidated Statement of Equity Statement - USD ($) $ in Thousands	Total	Common Stock Par Value	Additional Paid-In Capital	Treasury Stock	Accumulated Other  Comprehensive Income (Loss)	Retained Deficit	Noncontrolling Interest
Balance at beginning of period at Dec. 31, 2019	$ 162,826	$ 1,283	$ 466,959	$ (19,164)	$ (52,183)	$ (362,522)	$ 128,453
Net Income (Loss) Attributable to Parent						(1,551)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(10,376)						(8,825)
Translation adjustment, net of taxes	(6,467)				(6,238)		(229)
Comprehensive income (loss)	(16,843)
Dividend	(309)						309
Equity award activity	4	4
Treasury stock activity, net	(89)			(89)
Equity compensation expense	1,373		1,145				228
Other	(31)		(16)				(15)
Balance at end of period at Mar. 31, 2020	146,931	1,287	468,088	(19,253)	(58,421)	(364,073)	119,303
Balance at beginning of period at Dec. 31, 2019	162,826	1,283	466,959	(19,164)	(52,183)	(362,522)	128,453
Net Income (Loss) Attributable to Parent	(36,108)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(68,941)
Comprehensive income (loss)	(71,439)
Balance at end of period at Sep. 30, 2020	95,175	1,289	471,146	(19,484)	(54,634)	(398,630)	95,488
Balance at beginning of period at Mar. 31, 2020	146,931	1,287	468,088	(19,253)	(58,421)	(364,073)	119,303
Net Income (Loss) Attributable to Parent						(21,255)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(36,967)						(15,712)
Translation adjustment, net of taxes	1,095				980		115
Comprehensive income (loss)	(35,872)
Dividend	(311)						311
Equity award activity	1	1
Treasury stock activity, net	(181)			(181)
Equity compensation expense	2,134		1,685				449
Other	(16)		4				(20)
Balance at end of period at Jun. 30, 2020	112,686	1,288	469,777	(19,434)	(57,441)	(385,328)	103,824
Net Income (Loss) Attributable to Parent	(13,302)					(13,302)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(21,598)						(8,296)
Translation adjustment, net of taxes	2,874				2,807		67
Comprehensive income (loss)	(18,724)
Dividend	(312)						312
Equity award activity	1	1
Treasury stock activity, net	(50)			(50)
Equity compensation expense	1,595		1,363				232
Other	(21)		6				(27)
Balance at end of period at Sep. 30, 2020	95,175	1,289	471,146	(19,484)	(54,634)	(398,630)	95,488
Balance at beginning of period at Dec. 31, 2020	71,062	1,289	472,134	(19,484)	(49,914)	(413,665)	80,702
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	109,047						333
Translation adjustment, net of taxes	(2,779)						0
Comprehensive income (loss)	106,268
Deconsolidation of CSI Compressco	(75,607)				7,168		(82,775)
Equity award activity	6	6	0
Treasury stock activity, net	(449)			(449)
Equity compensation expense	1,542		962				580
Other	(355)		(574)				219
Balance at end of period at Mar. 31, 2021	102,467	1,295	472,522	(19,933)	(45,525)	(304,951)	(941)
Balance at beginning of period at Dec. 31, 2020	71,062	1,289	472,134	(19,484)	(49,914)	(413,665)	80,702
Net Income (Loss) Attributable to Parent	104,474
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	104,780
Comprehensive income (loss)	102,008
Balance at end of period at Sep. 30, 2021	100,078	1,301	474,544	(19,945)	(45,518)	(309,191)	(1,113)
Balance at beginning of period at Mar. 31, 2021	102,467	1,295	472,522	(19,933)	(45,525)	(304,951)	(941)
Net Income (Loss) Attributable to Parent						(6,753)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(6,780)						(27)
Translation adjustment, net of taxes	2,157				2,157		0
Comprehensive income (loss)	(4,623)
Dividend	(119)						(119)
Equity award activity	2	2	0
Treasury stock activity, net	(6)			(6)
Equity compensation expense	1,592		1,592				0
Other	(256)		(242)				(14)
Balance at end of period at Jun. 30, 2021	99,057	1,297	473,872	(19,939)	(43,368)	(311,704)	(1,101)
Net Income (Loss) Attributable to Parent	2,513					2,513
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	2,513						0
Translation adjustment, net of taxes	(2,150)				(2,150)		0
Comprehensive income (loss)	363
Equity award activity	4	4	0
Treasury stock activity, net	(6)			(6)
Equity compensation expense	1,057		1,057				0
Other	(397)		(385)				(12)
Balance at end of period at Sep. 30, 2021	$ 100,078	$ 1,301	$ 474,544	$ (19,945)	$ (45,518)	$ (309,191)	$ (1,113)

Consolidated Statement of Equ_2

Consolidated Statement of Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Translation adjustment, tax	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net income (loss)	$ 104,780	$ (68,941)
Reconciliation of net income (loss) to net cash provided by operating activities:
Depreciation, amortization, and accretion	25,524	88,906
Gain on GP Sale	(120,574)	0
Impairment and other charges	449	14,445
Gain on retained CSI Compressco units and Standard Lithium shares	(11,803)	0
Equity-based compensation expense	3,611	4,847
Amortization and expense of financing costs and deferred financing gains	2,320	3,698
Debt-related expenses	0	4,777
Warrants fair value adjustment	(143)	(326)
Gain on sale of assets	(479)	(4,340)
Other non-cash charges	(340)	5,814
Changes in operating assets and liabilities:
Accounts receivable	(15,246)	62,039
Inventories	2,449	11,780
Prepaid expenses and other current assets	(2,927)	(916)
Trade accounts payable and accrued expenses	25,231	(57,844)
Other	(2,428)	888
Net cash provided by (used in) operating activities	10,424	64,827
Investing activities:
Purchases of property, plant, and equipment, net	14,620	22,011
Proceeds from sale of CCLP, net of cash divested	566	0
Proceeds on sale of property, plant, and equipment	1,016	24,704
Proceeds from Insurance Settlement, Investing Activities	110	643
Other investing activities	764	(576)
Net cash provided by (used in) investing activities	(12,164)	2,760
Financing activities:
Proceeds from long-term debt	0	404,060
Principal payments on long-term debt	(37,477)	(408,666)
CSI Compressco distributions	0	(932)
Tax remittances on equity based compensation	0	(341)
Dividend payments attributable to noncontrolling interest	(99)	0
Debt issuance costs and other financing activities	(1,080)	(3,897)
Net cash provided by (used in) financing activities	(38,656)	(9,776)
Effect of exchange rate changes on cash	(1,635)	(355)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(42,031)	57,456
Cash and cash equivalents and restricted cash at beginning of period	83,894	17,768
Cash and cash equivalents at beginning of period associated with discontinued operations	16,577	2,370
Cash and cash equivalents and restricted cash at beginning of period associated with continuing operations	67,317	15,398
Cash and cash equivalents and restricted cash at end of period	41,863	75,224
Cash and cash equivalents at end of period associated with discontinued operations	0	6,757
Cash and cash equivalents and restricted cash at end of period associated with continuing operations	$ 41,863	$ 68,467

Organization, Basis of Presenta

Organization, Basis of Presentation, and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Organization, Basis of Presentation, and Significant Accounting Policies	ORGANIZATION, BASIS OF PRESENTATION, AND SIGNIFICANT ACCOUNTING POLICIES Organization We are an industrial and oil and gas products and services company operating on six continents, focused on bromine-based completion fluids, calcium chloride, water management solutions, frac flowback and production well testing services. We were incorporated in Delaware in 1981. We are composed of two segments – Completion Fluids & Products Division and Water & Flowback Services Division. Unless the context requires otherwise, when we refer to “we,” “us,” and “our,” we are describing TETRA Technologies, Inc. and its consolidated subsidiaries on a consolidated basis. Presentation Our unaudited consolidated financial statements include the accounts of our wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The information furnished reflects all normal recurring adjustments, which are, in the opinion of management, necessary to provide a fair statement of the results for the interim periods. Operating results for the period ended September 30, 2021 are not necessarily indicative of results that may be expected for the twelve months ended December 31, 2021. The accompanying unaudited consolidated financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X for interim financial statements required to be filed with the U.S. Securities and Exchange Commission (“SEC”) and do not include all information and footnotes required by U.S. generally accepted accounting principles (“U.S. GAAP”) for complete financial statements. These financial statements should be read in conjunction with the financial statements for the year ended December 31, 2020 and notes thereto included in our Annual Report on Form 10-K , which we filed with the SEC on March 5, 2021. Significant Accounting Policies Our significant accounting policies are described in the notes to our consolidated financial statements for the year ended December 31, 2020 included in our Annual Report on Form 10-K . There have been no significant changes in our accounting policies or the application thereof during the third quarter of 2021. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclose contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues, expenses, and impairments during the reporting period. Actual results could differ from those estimates, and such differences could be material. Reclassifications Certain previously reported financial information has been reclassified to conform to the current year's presentation. For a discussion of the reclassification of the financial presentation of our former Compression Division as discontinued operations, see Note 2 - “Discontinued Operations”. Other than the discontinued operations presentation, the impact of reclassifications was not significant to the prior year's overall presentation. Unless otherwise noted, amounts and disclosures throughout these Notes to Consolidated Financial Statements relate solely to continuing operations and exclude all discontinued operations. Impairments and Other Charges Impairments of long-lived assets, including identified intangible assets, are determined periodically when indicators of impairment are present. If such indicators are present, the determination of the amount of impairment is based on our judgment as to the future undiscounted operating cash flows to be generated from the relevant assets throughout their remaining estimated useful lives. If these undiscounted cash flows are less than the carrying amount of the related assets, an impairment is recognized for the excess of the carrying value over fair value. Fair value of intangible assets is generally determined using the discounted present value of future cash flows using discount rates commensurate with the risks inherent with the specific assets. Assets held for disposal are recorded at the lower of carrying value or estimated fair value less estimated selling costs. During the nine months ended 2021, we recorded an impairment charge of $0.4 million related to idle equipment in our Canada office within our Water & Flowback Services Division. There were no significant impairments associated with continuing operations during the nine months ended September 30, 2020. Foreign Currency Translation We have designated the Euro, the British pound, the Canadian dollar, the Brazilian real, and the Mexican peso as the functional currencies for our operations in Finland and Sweden, the United Kingdom, Canada, Brazil, and certain of our operations in Mexico, respectively. During 2021, we determined our business operations in Norway were primarily operating using the United States dollar. Effective July 1, 2021, the functional currency of our operations in Norway was changed from the Norwegian krone to the United States dollar. The United States dollar is also the designated functional currency for all of our other non-U.S. operations. The cumulative translation effects of translating the applicable accounts from the functional currencies into the United States dollar at current exchange rates are included as a separate component of equity. Foreign currency exchange (gains) and losses are included in other (income) expense, net and totaled $(0.1) million and $(1.1) million during the three and nine months ended September 30, 2021, respectively, and $1.2 million and $2.2 million for the three and nine months ended September 30, 2020, respectively. Fair Value Measurements We utilize fair value measurements to account for certain items and account balances within our consolidated financial statements. Fair value measurements are utilized on a recurring basis in the determination of the carrying values of certain assets, including our interest in Standard Lithium Ltd. (“Standard Lithium”) and our retained interest in CSI Compressco and liabilities, including the liabilities for the warrants to purchase 11.2 million shares of our common stock (the “Warrants”). See Note 8 - “Fair Value Measurements” for further discussion. Fair value measurements are also utilized on a nonrecurring basis in certain circumstances, including the impairment of long-lived assets (a Level 3 fair value measurement). Supplemental Cash Flow Information Supplemental cash flow information from continuing and discontinued operations is as follows: Nine Months Ended 2021 2020 (in thousands) Supplemental cash flow information (1) : Interest paid $ 10,954 $ 42,199 Income taxes paid 1,423 4,692 Increase (decrease) in accrued capital expenditures 463 (1,614) (1) Prior-year information includes the activity for CSI Compressco for the full period. Current-year information includes activity for CSI Compressco for January only. New Accounting Pronouncements Standards adopted in 2021 In December 2019, the FASB issued Accounting Standards Update (“ASU”) 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions related to intraperiod tax allocation, interim period income tax calculation methodology, and the recognition of deferred tax liabilities for outside basis differences. It also simplifies certain aspects of accounting for franchise taxes and clarifies the accounting for transactions that results in a step-up in the tax basis of goodwill. On January 1, 2021, we adopted ASU 2019-12. The adoption of this standard did not have a material impact on our consolidated financial statements. Standards not yet adopted In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 amends the impairment model to utilize an expected loss methodology in place of the currently used incurred loss methodology, which will result in the more timely recognition of losses on financial instruments not accounted for at fair value through net income. The provisions require credit impairments to be measured over the contractual life of an asset and developed with consideration for past events, current conditions, and forecasts of future economic information. Credit impairment will be accounted for as an allowance for credit losses deducted from the amortized cost basis at each reporting date. We are continuing to work through our implementation plan which includes evaluating the impact on our allowance for doubtful accounts methodology, identifying new reporting requirements, and implementing changes to business processes, systems, and controls to support adoption of the standard. Upon adoption, the allowance for doubtful accounts is expected to increase with an offsetting adjustment to retained earnings. Updates at each reporting date after initial adoption will be recorded through selling, general, and administrative expense. ASU 2016-13 will become effective for us in the first quarter of fiscal 2023. We continue to assess the potential effects of these changes to our consolidated financial statements. In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848)”, which provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. Entities may elect to apply the amendments for contract modifications made on or before December 31, 2022. During the three months ended September 30, 2021, our asset-based credit agreement and term credit agreement were amended to allow replacement of LIBOR with another benchmark rate, such as the secured overnight financing rate (“SOFR”) in the event that LIBOR cannot be determined or does not fairly reflect the cost to our lenders of funding our loans. If LIBOR is not available, we cannot predict what alternative index would be negotiated with our lenders. We will assess the impact of adopting ASU 2020-04 on our consolidated financial statements if or when our contracts are modified to eliminate references to LIBOR.

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2021
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	DISCONTINUED OPERATIONS On January 29, 2021, we entered into the Purchase and Sale Agreement with Spartan Energy Partners, LP (“Spartan”) pursuant to which we sold the general partner of CSI Compressco, including the IDRs in CSI Compressco and approximately 23.1% of the outstanding limited partner interests in CSI Compressco, in exchange for the combination of $13.4 million in cash paid at closing, $0.5 million in cash paid on the six-month anniversary of closing and $3.1 million in contingent consideration in the form of cash and/or CSI Compressco common units if CSI Compressco achieves certain financial targets on or before December 31, 2022. Throughout this Quarterly Report, we refer to the transaction with Spartan as the “GP Sale.” As a result of these transactions, we no longer consolidate CSI Compressco as of January 29, 2021. We recognized a primarily non-cash accounting gain of $120.6 million during the nine-month period ended September 30, 2021 related to the GP Sale. The gain is included in income (loss) from discontinued operations, net of taxes in our consolidated statement of operations. We will also continue to provide back-office support to CSI Compressco under a Transition Services Agreement for up to one year until CSI Compressco has completed a full separation from our back-office support functions. Our interest in CSI Compressco and the general partner represented substantially all of our Compression Division. In addition, on March 1, 2018, we closed a series of related transactions that resulted in the disposition of our Offshore Division, consisting of our Offshore Services and Maritech segments. Our former Compression and Offshore Divisions are reported as discontinued operations for all periods presented. Our consolidated balance sheets and consolidated statements of operations report discontinued operations separate from continuing operations. Our consolidated statements of comprehensive income, statements of equity and statements of cash flows combine continuing and discontinued operations. Our current-year consolidated statement of operations, statement of comprehensive income, statement of equity and statement of cash flows include CSI Compressco activity for January 1 through January 29. Our consolidated statements of cash flows for the nine-month periods ended September 30, 2021 and September 30, 2020 included $3.0 million and $10.8 million, respectively, of capital expenditures related to our former Compression division, as well as $337.5 million of proceeds from long-term debt, $341.2 million of payments of long-term debt, $21.7 million from proceeds from sale of property, plant and equipment, and $2.0 million from amortization of deferred financing discounts, costs and gains for the nine-month period ended September 30, 2020. Our current-year results do not include CSI Compressco depreciation or amortization as the assets were considered held for sale. A summary of financial information related to our discontinued operations is as follows: Reconciliation of the Line Items Constituting Pretax Loss from Discontinued Operations to the After-Tax Loss from Discontinued Operations (in thousands) Three Months Ended Compression Offshore Services Total Major classes of line items constituting loss from discontinued operations Cost of revenues $ — $ (174) $ (174) General and administrative expense — 6 6 Other expense, net 150 — 150 Pretax (loss) income from discontinued operations (150) 168 18 Loss from discontinued operations attributable to TETRA stockholders $ 18 Three Months Ended Compression Offshore Services Total Major classes of line items constituting loss from discontinued operations Revenue $ 79,117 $ — $ 79,117 Cost of revenues 49,414 2 49,416 Depreciation, amortization, and accretion 19,948 — 19,948 General and administrative expense 9,133 170 9,303 Interest expense, net 13,293 — 13,293 Other expense, net (1,348) — (1,348) Pretax loss from discontinued operations (11,323) (172) (11,495) Income tax provision 544 Total loss from discontinued operations (12,039) Loss from discontinued operations attributable to noncontrolling interest 8,342 Loss from discontinued operations attributable to TETRA stockholders $ (3,697) Nine Months Ended Compression Offshore Services Total Major classes of line items constituting income from discontinued operations Revenue $ 18,968 $ — $ 18,968 Cost of revenues 11,474 (146) 11,328 General and administrative expense 2,796 6 2,802 Interest expense, net 4,336 — 4,336 Other expense, net 164 — 164 Pretax income from discontinued operations 198 140 338 Pretax gain on disposal of discontinued operations 120,574 Total pretax income from discontinued operations 120,912 Income tax provision 30 Total income from discontinued operations 120,882 Income from discontinued operations attributable to noncontrolling interest (333) Income from discontinued operations attributable to TETRA stockholders $ 120,549 Nine Months Ended Compression Offshore Services Total Major classes of line items constituting loss from discontinued operations Revenue $ 265,727 $ — $ 265,727 Cost of revenues 167,279 (332) 166,947 Depreciation, amortization, and accretion 59,972 — 59,972 Impairments and other charges 14,348 — 14,348 General and administrative expense 29,474 487 29,961 Interest expense, net 38,839 — 38,839 Other expense, net 2,932 — 2,932 Pretax loss from discontinued operations (47,117) (155) (47,272) Income tax provision 1,923 Total loss from discontinued operations (49,195) Loss from discontinued operations attributable to noncontrolling interest 32,957 Loss from discontinued operations attributable to TETRA stockholders $ (16,238) Reconciliation of Major Classes of Assets and Liabilities of the Discontinued Operations to Amounts Presented Separately in the Statement of Financial Position (in thousands) September 30, 2021 Offshore Services Maritech Total Carrying amounts of major classes of liabilities included as part of discontinued operations Trade payables $ 1,099 $ — $ 1,099 Accrued liabilities and other — 228 228 Total liabilities associated with discontinued operations $ 1,099 $ 228 $ 1,327 December 31, 2020 Compression Offshore Services Maritech Total Carrying amounts of major classes of assets included as part of discontinued operations Cash and cash equivalents $ 16,577 $ — $ — $ 16,577 Trade receivables 43,837 — — 43,837 Inventories 31,220 — — 31,220 Other current assets 5,231 — — 5,231 Property, plant, and equipment 551,401 — — 551,401 Other assets 61,740 — — 61,740 Total assets associated with discontinued operations $ 710,006 $ — $ — $ 710,006 Carrying amounts of major classes of liabilities included as part of discontinued operations Trade payables $ 19,766 $ 1,222 $ — $ 20,988 Unearned Income 269 — — 269 Accrued liabilities and other 36,318 352 228 36,898 Long-term debt, net 638,631 — — 638,631 Other liabilities 37,253 — — 37,253 Total liabilities associated with discontinued operations $ 732,237 $ 1,574 $ 228 $ 734,039

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUE FROM CONTRACTS WITH CUSTOMERS Our contract asset balances, primarily associated with customer documentation requirements, were $16.9 million and $12.8 million as of September 30, 2021 and December 31, 2020, respectively. Contract assets, along with billed trade accounts receivable, are included in trade accounts receivable in our consolidated balance sheets. Unearned income includes amounts in which the Company was contractually allowed to invoice prior to satisfying the associated performance obligations. Unearned income balances were $1.4 million and $2.7 million as of September 30, 2021 and December 31, 2020, respectively, and vary based on the timing of invoicing and performance obligations being met. Revenues recognized during the nine-month periods ended September 30, 2021 and September 30, 2020 deferred as of the end of the preceding year were not significant. During the nine-month periods ended September 30, 2021 and September 30, 2020, contract costs were not significant. We disaggregate revenue from contracts with customers into Product Sales and Services within each segment, as noted in our two reportable segments in Note 10. In addition, we disaggregate revenue from contracts with customers by geography based on the following table below. Three Months Ended Nine Months Ended 2021 2020 2021 2020 (In Thousands) Completion Fluids & Products United States $ 22,529 $ 15,013 $ 72,353 $ 85,073 International 26,162 36,937 87,466 113,460 48,691 51,950 159,819 198,533 Water & Flowback Services United States 42,234 19,767 106,630 97,016 International 4,549 1,767 8,675 6,708 46,783 21,534 115,305 103,724 Total Revenue United States 64,763 34,780 178,983 182,089 International 30,711 38,704 96,141 120,168 $ 95,474 $ 73,484 $ 275,124 $ 302,257

Inventories

Inventories	9 Months Ended
	Sep. 30, 2021
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Components of inventories as of September 30, 2021 and December 31, 2020 are as follows: September 30, 2021 December 31, 2020 (In Thousands) Finished goods $ 62,510 $ 68,121 Raw materials 3,604 2,910 Parts and supplies 4,524 4,001 Work in progress 1,648 1,626 Total inventories $ 72,286 $ 76,658

Investments

Investments	9 Months Ended
	Sep. 30, 2021
Investments in and Advances to Affiliates [Abstract]
Investments	INVESTMENTS Following the closing of the GP Sale, we continue to own approximately 10.9% of the outstanding CSI Compressco common units. In addition, we are party to agreements in which Standard Lithium has the right to explore, produce and extract lithium in our Arkansas leases as well as additional potential resources in the Mojave region of California. The Company receives cash and stock of Standard Lithium (NYSE:SLI) under the terms of the arrangements. The cash and stock component of consideration received is initially recorded as unearned income based on the quoted market price at the time the stock is received, then recognized in income over the contract term. See Note 8 - “Fair Value Measurements” for further information. Our investments as of September 30, 2021 and December 31, 2020, consist of the following: September 30, 2021 December 31, 2020 (In Thousands) Investment in CSI Compressco $ 9,404 $ — Investment in Standard Lithium 13,008 2,675 Total Investments $ 22,412 $ 2,675

Long-Term Debt and Other Borrow

Long-Term Debt and Other Borrowings	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Debt Disclosure	LONG-TERM DEBT AND OTHER BORROWINGS Consolidated long-term debt as of September 30, 2021 and December 31, 2020, consists of the following: Scheduled Maturity September 30, 2021 December 31, 2020 (In Thousands) Asset-based credit agreement May 31, 2025 $ — $ — Term credit agreement (1) September 10, 2025 164,228 199,894 Total long-term debt $ 164,228 $ 199,894 (1) Net of unamortized discount of $4.8 million and $5.5 million as of September 30, 2021 and December 31, 2020, respectively, and net of unamortized deferred financing costs of $7.1 million and $8.2 million as of September 30, 2021 and December 31, 2020, respectively. On July 30, 2021, we entered into an amendment to our asset-based credit agreement (“ABL Credit Agreement’) that, among other things, extended the term of the credit facility to May 31, 2025 and revised our commitment to $80.0 million, with a $20.0 million accordion. The amendment increased the availability by adding the value of accrued Unites States receivables, increased the forward rates on accounts receivable for investment grade customers and incorporated a new $15.0 million sub-facility subject to a borrowing base consisting of certain trade receivables and inventory in the United Kingdom. As of September 30, 2021, we had no outstanding balance and $6.2 million in letters of credit against our “ABL Credit Agreement. Because there was no outstanding balance on this ABL Credit Agreement, associated deferred financing costs of $1.7 million as of September 30, 2021, were classified as other long-term assets on the

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Litigation We are named defendants in several lawsuits and respondents in certain governmental proceedings arising in the ordinary course of business. While the outcome of lawsuits or other proceedings against us cannot be predicted with certainty, management does not consider it reasonably possible that a loss resulting from such lawsuits or other proceedings in excess of any amounts accrued has been incurred that is expected to have a material adverse impact on our financial condition, results of operations, or liquidity. There have been no material developments in our legal proceedings during the quarter ended September 30, 2021. For a discussion of our legal proceedings, please see our Annual Report on Form 10-K for the year ended December 31, 2020. Investment In May 2021, we signed a memorandum of understanding (“MOU”) with CarbonFree Chemicals Holdings, LLC (“CarbonFree”), a carbon capture company with patented technologies that capture CO 2 and mineralize emissions to make commercial, carbon-negative chemicals. During the one-year MOU period, both Companies will work towards a definitive agreement that might include investments by TETRA into CarbonFree, a joint venture, or other commercial arrangements. On July 23, 2021, we entered into a commitment to invest $5.0 million in a convertible note to be issued by CarbonFree. Our investment in CarbonFree is contingent on certain conditions being attained by CarbonFree.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Financial Instruments Investments Our retained investment in CSI Compressco and our investment in Standard Lithium are recorded based on the quoted market stock price in active markets (a Level 1 fair value measurement). The stock component of consideration received for our arrangement with Standard Lithium is initially recorded as unearned income based on the quoted market price at the time the stock is received, then recognized in income over the contract term. The unearned income associated with the stock component of this agreement is not significant as of September 30, 2021 or December 31, 2020. Changes in the value of stock are recorded in other income (expense) in our consolidated statements of operations. Warrants The Warrants are valued using a Black Scholes option valuation model that includes estimates of the volatility of the Warrants (a Level 3 fair value measurement). The Warrants are accounted for as a derivative liability and increases (or decreases) in the fair value of the Warrants are generally associated with increases (or decreases) in the trading price of our common stock, increases in the volatility of our common stock price and decreases in time remaining until expiration of the Warrants, resulting in adjustments to earnings for the associated valuation losses (gains), and resulting in future volatility of our earnings during the period the Warrants are outstanding. The estimated volatility as of September 30, 2021 was 60%. The outstanding Warrants expire by December 31, 2021. Recurring and nonrecurring fair value measurements by valuation hierarchy as of September 30, 2021 and December 31, 2020, are as follows: Fair Value Measurements Using Total as of Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs Description September 30, 2021 (Level 1) (Level 2) (Level 3) (In Thousands) Investment in CSI Compressco $ 9,404 $ 9,404 $ — $ — Investment in Standard Lithium 13,008 13,008 — — Warrants liability (56) — — (56) Net asset $ 22,356 Fair Value Measurements Using Total as of Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs Description December 31, 2020 (Level 1) (Level 2) (Level 3) (In Thousands) Investment in Standard Lithium $ 2,675 $ 2,675 — $ — Warrants liability (198) — — (198) Net asset $ 2,477 The fair values of cash, restricted cash, accounts receivable, accounts payable, accrued liabilities, short-term borrowings and long-term debt pursuant to TETRA’s ABL Credit Agreement and term credit agreement approximate their carrying amounts. See Note 6 - “Long-Term Debt and Other Borrowings” for further discussion.

Net Income (Loss) per Share

Net Income (Loss) per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Net Income (Loss) per Share	NET INCOME (LOSS) PER SHARE The following is a reconciliation of the weighted average number of common shares outstanding with the number of shares used in the computations of net income (loss) per common and common equivalent share: Three Months Ended Nine Months Ended 2021 2020 2021 2020 (In Thousands) Number of weighted average common shares outstanding 126,733 125,893 126,489 125,789 Assumed exercise of equity awards and warrants 1,961 — — — Average diluted shares outstanding 128,694 125,893 126,489 125,789 The average diluted shares outstanding excludes the impact of certain outstanding equity awards and warrants of 1,767 thousand shares for the nine-month period ended September 30, 2021, and 93 thousand and 17 thousand shares for the three and nine-month periods ended September 30, 2020, respectively, as the inclusion of these shares would have been anti-dilutive due to the net loss from continuing operations recorded during these periods.

Industry Segments

Industry Segments	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Industry Segments	INDUSTRY SEGMENTS We manage our operations through two segments: Completion Fluids & Products Division and Water & Flowback Services Division. Summarized financial information concerning the business segments is as follows: Three Months Ended Nine Months Ended 2021 2020 2021 2020 (In Thousands) Revenues from external customers Product sales Completion Fluids & Products Division $ 46,322 $ 49,986 $ 153,905 $ 187,419 Water & Flowback Services Division 18 23 50 56 Consolidated $ 46,340 $ 50,009 $ 153,955 $ 187,475 Services Completion Fluids & Products Division $ 2,369 $ 1,964 $ 5,914 $ 11,114 Water & Flowback Services Division 46,765 21,511 115,255 103,668 Consolidated $ 49,134 $ 23,475 $ 121,169 $ 114,782 Total revenues Completion Fluids & Products Division $ 48,691 $ 51,950 $ 159,819 $ 198,533 Water & Flowback Services Division 46,783 21,534 115,305 103,724 Consolidated $ 95,474 $ 73,484 $ 275,124 $ 302,257 Income (loss) before taxes Completion Fluids & Products Division $ 14,675 $ 11,756 $ 40,113 $ 44,354 Water & Flowback Services Division (1,807) (7,746) (12,265) (18,408) Interdivision eliminations 3 4 9 10 Corporate Overhead (1) (9,789) (13,472) (41,820) (43,825) Consolidated $ 3,082 $ (9,458) $ (13,963) $ (17,869) (1) Amounts reflected include the following general corporate expenses: Three Months Ended Nine Months Ended 2021 2020 2021 2020 (In Thousands) General and administrative expense $ 8,409 $ 8,959 $ 30,973 $ 28,650 Depreciation and amortization 228 270 646 643 Interest expense 4,247 4,706 13,354 14,909 Warrants fair value adjustment (income) expense (3,164) — (143) (327) Other general corporate income, net 69 (463) (3,010) (50) Total $ 9,789 $ 13,472 $ 41,820 $ 43,825

Organization, Basis of Presen_2

Organization, Basis of Presentation, and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Nature of operations	Organization We are an industrial and oil and gas products and services company operating on six continents, focused on bromine-based completion fluids, calcium chloride, water management solutions, frac flowback and production well testing services. We were incorporated in Delaware in 1981. We are composed of two segments – Completion Fluids & Products Division and Water & Flowback Services Division. Unless the context requires otherwise, when we refer to “we,” “us,” and “our,” we are describing TETRA Technologies, Inc. and its consolidated subsidiaries on a consolidated basis.
Principles of consolidation policy	Presentation Our unaudited consolidated financial statements include the accounts of our wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The information furnished reflects all normal recurring adjustments, which are, in the opinion of management, necessary to provide a fair statement of the results for the interim periods. Operating results for the period ended September 30, 2021 are not necessarily indicative of results that may be expected for the twelve months ended December 31, 2021. The accompanying unaudited consolidated financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X for interim financial statements required to be filed with the U.S. Securities and Exchange Commission (“SEC”) and do not include all information and footnotes required by U.S. generally accepted accounting principles (“U.S. GAAP”) for complete financial statements. These financial statements should be read in conjunction with the financial statements for the year ended December 31, 2020 and notes thereto included in our Annual Report on Form 10-K
Use of estimates policy	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclose contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues, expenses, and impairments during the reporting period. Actual results could differ from those estimates, and such differences could be material.
Reclassifications	Reclassifications Certain previously reported financial information has been reclassified to conform to the current year's presentation. For a discussion of the reclassification of the financial presentation of our former Compression Division as discontinued operations, see Note 2 - “Discontinued Operations”. Other than the discontinued operations presentation, the impact of reclassifications was not significant to the prior year's overall presentation. Unless otherwise noted, amounts and disclosures throughout these Notes to Consolidated Financial Statements relate solely to continuing operations and exclude all discontinued operations.
Impairments and other charges	Impairments and Other Charges Impairments of long-lived assets, including identified intangible assets, are determined periodically when indicators of impairment are present. If such indicators are present, the determination of the amount of impairment is based on our judgment as to the future undiscounted operating cash flows to be generated from the relevant assets throughout their remaining estimated useful lives. If these undiscounted cash flows are less than the carrying
Foreign currency translation policy	Foreign Currency Translation We have designated the Euro, the British pound, the Canadian dollar, the Brazilian real, and the Mexican peso as the functional currencies for our operations in Finland and Sweden, the United Kingdom, Canada, Brazil, and certain of our operations in Mexico, respectively. During 2021, we determined our business operations in Norway were primarily operating using the United States dollar. Effective July 1, 2021, the functional currency of our operations in Norway was changed from the Norwegian krone to the United States dollar. The United States dollar is also the designated functional currency for all of our other non-U.S. operations. The cumulative translation effects of translating the applicable accounts from the functional currencies into the United States dollar at current exchange rates are included as a separate component of equity. Foreign currency exchange (gains) and losses are included in other (income) expense, net and totaled $(0.1) million and $(1.1) million during the three and nine months ended September 30, 2021, respectively, and $1.2 million and $2.2 million for the three and nine months ended September 30, 2020, respectively.
Fair value measurements	Fair Value Measurements
New accounting pronouncements	New Accounting Pronouncements Standards adopted in 2021 In December 2019, the FASB issued Accounting Standards Update (“ASU”) 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions related to intraperiod tax allocation, interim period income tax calculation methodology, and the recognition of deferred tax liabilities for outside basis differences. It also simplifies certain aspects of accounting for franchise taxes and clarifies the accounting for transactions that results in a step-up in the tax basis of goodwill. On January 1, 2021, we adopted ASU 2019-12. The adoption of this standard did not have a material impact on our consolidated financial statements. Standards not yet adopted In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 amends the impairment model to utilize an expected loss methodology in place of the currently used incurred loss methodology, which will result in the more timely recognition of losses on financial instruments not accounted for at fair value through net income. The provisions require credit impairments to be measured over the contractual life of an asset and developed with consideration for past events, current conditions, and forecasts of future economic information. Credit impairment will be accounted for as an allowance for credit losses deducted from the amortized cost basis at each reporting date. We are continuing to work through our implementation plan which includes evaluating the impact on our allowance for doubtful accounts methodology, identifying new reporting requirements, and implementing changes to business processes, systems, and controls to support adoption of the standard. Upon adoption, the allowance for doubtful accounts is expected to increase with an offsetting adjustment to retained earnings. Updates at each reporting date after initial adoption will be recorded through selling, general, and administrative expense. ASU 2016-13 will become effective for us in the first quarter of fiscal 2023. We continue to assess the potential effects of these changes to our consolidated financial statements. In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848)”, which provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. Entities may elect to apply the amendments for contract modifications made on or before December 31, 2022. During the three months ended September 30, 2021, our asset-based credit agreement and term credit agreement were amended to allow replacement of LIBOR with another benchmark rate, such as the secured overnight financing rate (“SOFR”) in the event that LIBOR cannot be determined or does not fairly reflect the cost to our lenders of funding our loans. If LIBOR is not available, we cannot predict what alternative index would be negotiated with our lenders. We will assess the impact of adopting ASU 2020-04 on our consolidated financial statements if or when our contracts are modified to eliminate references to LIBOR.

Organization, Basis of Presen_3

Organization, Basis of Presentation, and Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Schedule of Cash Flow, Supplemental Disclosures	Supplemental cash flow information from continuing and discontinued operations is as follows: Nine Months Ended 2021 2020 (in thousands) Supplemental cash flow information (1) : Interest paid $ 10,954 $ 42,199 Income taxes paid 1,423 4,692 Increase (decrease) in accrued capital expenditures 463 (1,614) (1) Prior-year information includes the activity for CSI Compressco for the full period. Current-year information includes activity for CSI Compressco for January only.

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2021
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	A summary of financial information related to our discontinued operations is as follows: Reconciliation of the Line Items Constituting Pretax Loss from Discontinued Operations to the After-Tax Loss from Discontinued Operations (in thousands) Three Months Ended Compression Offshore Services Total Major classes of line items constituting loss from discontinued operations Cost of revenues $ — $ (174) $ (174) General and administrative expense — 6 6 Other expense, net 150 — 150 Pretax (loss) income from discontinued operations (150) 168 18 Loss from discontinued operations attributable to TETRA stockholders $ 18 Three Months Ended Compression Offshore Services Total Major classes of line items constituting loss from discontinued operations Revenue $ 79,117 $ — $ 79,117 Cost of revenues 49,414 2 49,416 Depreciation, amortization, and accretion 19,948 — 19,948 General and administrative expense 9,133 170 9,303 Interest expense, net 13,293 — 13,293 Other expense, net (1,348) — (1,348) Pretax loss from discontinued operations (11,323) (172) (11,495) Income tax provision 544 Total loss from discontinued operations (12,039) Loss from discontinued operations attributable to noncontrolling interest 8,342 Loss from discontinued operations attributable to TETRA stockholders $ (3,697) Nine Months Ended Compression Offshore Services Total Major classes of line items constituting income from discontinued operations Revenue $ 18,968 $ — $ 18,968 Cost of revenues 11,474 (146) 11,328 General and administrative expense 2,796 6 2,802 Interest expense, net 4,336 — 4,336 Other expense, net 164 — 164 Pretax income from discontinued operations 198 140 338 Pretax gain on disposal of discontinued operations 120,574 Total pretax income from discontinued operations 120,912 Income tax provision 30 Total income from discontinued operations 120,882 Income from discontinued operations attributable to noncontrolling interest (333) Income from discontinued operations attributable to TETRA stockholders $ 120,549 Nine Months Ended Compression Offshore Services Total Major classes of line items constituting loss from discontinued operations Revenue $ 265,727 $ — $ 265,727 Cost of revenues 167,279 (332) 166,947 Depreciation, amortization, and accretion 59,972 — 59,972 Impairments and other charges 14,348 — 14,348 General and administrative expense 29,474 487 29,961 Interest expense, net 38,839 — 38,839 Other expense, net 2,932 — 2,932 Pretax loss from discontinued operations (47,117) (155) (47,272) Income tax provision 1,923 Total loss from discontinued operations (49,195) Loss from discontinued operations attributable to noncontrolling interest 32,957 Loss from discontinued operations attributable to TETRA stockholders $ (16,238) Reconciliation of Major Classes of Assets and Liabilities of the Discontinued Operations to Amounts Presented Separately in the Statement of Financial Position (in thousands) September 30, 2021 Offshore Services Maritech Total Carrying amounts of major classes of liabilities included as part of discontinued operations Trade payables $ 1,099 $ — $ 1,099 Accrued liabilities and other — 228 228 Total liabilities associated with discontinued operations $ 1,099 $ 228 $ 1,327 December 31, 2020 Compression Offshore Services Maritech Total Carrying amounts of major classes of assets included as part of discontinued operations Cash and cash equivalents $ 16,577 $ — $ — $ 16,577 Trade receivables 43,837 — — 43,837 Inventories 31,220 — — 31,220 Other current assets 5,231 — — 5,231 Property, plant, and equipment 551,401 — — 551,401 Other assets 61,740 — — 61,740 Total assets associated with discontinued operations $ 710,006 $ — $ — $ 710,006 Carrying amounts of major classes of liabilities included as part of discontinued operations Trade payables $ 19,766 $ 1,222 $ — $ 20,988 Unearned Income 269 — — 269 Accrued liabilities and other 36,318 352 228 36,898 Long-term debt, net 638,631 — — 638,631 Other liabilities 37,253 — — 37,253 Total liabilities associated with discontinued operations $ 732,237 $ 1,574 $ 228 $ 734,039

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	In addition, we disaggregate revenue from contracts with customers by geography based on the following table below. Three Months Ended Nine Months Ended 2021 2020 2021 2020 (In Thousands) Completion Fluids & Products United States $ 22,529 $ 15,013 $ 72,353 $ 85,073 International 26,162 36,937 87,466 113,460 48,691 51,950 159,819 198,533 Water & Flowback Services United States 42,234 19,767 106,630 97,016 International 4,549 1,767 8,675 6,708 46,783 21,534 115,305 103,724 Total Revenue United States 64,763 34,780 178,983 182,089 International 30,711 38,704 96,141 120,168 $ 95,474 $ 73,484 $ 275,124 $ 302,257

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2021
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	Components of inventories as of September 30, 2021 and December 31, 2020 are as follows: September 30, 2021 December 31, 2020 (In Thousands) Finished goods $ 62,510 $ 68,121 Raw materials 3,604 2,910 Parts and supplies 4,524 4,001 Work in progress 1,648 1,626 Total inventories $ 72,286 $ 76,658

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2021
Investments in and Advances to Affiliates [Abstract]
Summary of Investments	Our investments as of September 30, 2021 and December 31, 2020, consist of the following: September 30, 2021 December 31, 2020 (In Thousands) Investment in CSI Compressco $ 9,404 $ — Investment in Standard Lithium 13,008 2,675 Total Investments $ 22,412 $ 2,675

Long-Term Debt and Other Borr_2

Long-Term Debt and Other Borrowings (Table)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Long-Term Debt Table	Consolidated long-term debt as of September 30, 2021 and December 31, 2020, consists of the following: Scheduled Maturity September 30, 2021 December 31, 2020 (In Thousands) Asset-based credit agreement May 31, 2025 $ — $ — Term credit agreement (1) September 10, 2025 164,228 199,894 Total long-term debt $ 164,228 $ 199,894 (1) Net of unamortized discount of $4.8 million and $5.5 million as of September 30, 2021 and December 31, 2020, respectively, and net of unamortized deferred financing costs of $7.1 million and $8.2 million as of September 30, 2021 and December 31, 2020, respectively.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	Recurring and nonrecurring fair value measurements by valuation hierarchy as of September 30, 2021 and December 31, 2020, are as follows: Fair Value Measurements Using Total as of Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs Description September 30, 2021 (Level 1) (Level 2) (Level 3) (In Thousands) Investment in CSI Compressco $ 9,404 $ 9,404 $ — $ — Investment in Standard Lithium 13,008 13,008 — — Warrants liability (56) — — (56) Net asset $ 22,356 Fair Value Measurements Using Total as of Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs Description December 31, 2020 (Level 1) (Level 2) (Level 3) (In Thousands) Investment in Standard Lithium $ 2,675 $ 2,675 — $ — Warrants liability (198) — — (198) Net asset $ 2,477

Net Income (Loss) per Share (Ta

Net Income (Loss) per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Share	The following is a reconciliation of the weighted average number of common shares outstanding with the number of shares used in the computations of net income (loss) per common and common equivalent share: Three Months Ended Nine Months Ended 2021 2020 2021 2020 (In Thousands) Number of weighted average common shares outstanding 126,733 125,893 126,489 125,789 Assumed exercise of equity awards and warrants 1,961 — — — Average diluted shares outstanding 128,694 125,893 126,489 125,789

Industry Segments (Tables)

Industry Segments (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Reporting Table	Summarized financial information concerning the business segments is as follows: Three Months Ended Nine Months Ended 2021 2020 2021 2020 (In Thousands) Revenues from external customers Product sales Completion Fluids & Products Division $ 46,322 $ 49,986 $ 153,905 $ 187,419 Water & Flowback Services Division 18 23 50 56 Consolidated $ 46,340 $ 50,009 $ 153,955 $ 187,475 Services Completion Fluids & Products Division $ 2,369 $ 1,964 $ 5,914 $ 11,114 Water & Flowback Services Division 46,765 21,511 115,255 103,668 Consolidated $ 49,134 $ 23,475 $ 121,169 $ 114,782 Total revenues Completion Fluids & Products Division $ 48,691 $ 51,950 $ 159,819 $ 198,533 Water & Flowback Services Division 46,783 21,534 115,305 103,724 Consolidated $ 95,474 $ 73,484 $ 275,124 $ 302,257 Income (loss) before taxes Completion Fluids & Products Division $ 14,675 $ 11,756 $ 40,113 $ 44,354 Water & Flowback Services Division (1,807) (7,746) (12,265) (18,408) Interdivision eliminations 3 4 9 10 Corporate Overhead (1) (9,789) (13,472) (41,820) (43,825) Consolidated $ 3,082 $ (9,458) $ (13,963) $ (17,869) (1) Amounts reflected include the following general corporate expenses: Three Months Ended Nine Months Ended 2021 2020 2021 2020 (In Thousands) General and administrative expense $ 8,409 $ 8,959 $ 30,973 $ 28,650 Depreciation and amortization 228 270 646 643 Interest expense 4,247 4,706 13,354 14,909 Warrants fair value adjustment (income) expense (3,164) — (143) (327) Other general corporate income, net 69 (463) (3,010) (50) Total $ 9,789 $ 13,472 $ 41,820 $ 43,825

Organization, Basis of Presen_4

Organization, Basis of Presentation, and Significant Accounting Policies - Additional Information (Details) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)shares	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)continentshares	Sep. 30, 2020USD ($)
Accounting Policies [Abstract]
Number of continents in which entity operates | continent			6
Number of Operating Segments			2
Foreign Currency Transaction Gain (Loss), Realized | $	$ (0.1)	$ 1.2	$ (1.1)	$ 2.2
Class of Warrant or Right, Outstanding | shares	11.2		11.2

Organization, Basis of Presen_5

Organization, Basis of Presentation, and Significant Accounting Policies - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Accounting Policies [Abstract]
Interest paid	$ 10,954	$ 42,199
Income taxes paid	1,423	4,692
Increase (decrease) in accrued capital expenditures	$ 463	$ (1,614)

Discontinued Operations (Detail

Discontinued Operations (Details) - USD ($) $ in Thousands	Jan. 29, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of CCLP, net of cash divested				$ 566	$ 0
Gain on disposition of business				120,574	0
Proceeds from long-term debt				0	404,060
Repayments of long-term debt				37,477	408,666
Proceeds on sale of property, plant, and equipment				1,016	24,704
Revenue			$ 79,117	18,968	265,727
Cost of revenues		$ (174)	49,416	11,328	166,947
Depreciation, amortization, and accretion			19,948		59,972
Impairments and other charges					14,348
General and administrative expense		6	9,303	2,802	29,961
Interest expense, net			13,293	4,336	38,839
Other expense, net		150	(1,348)	164	2,932
Pretax (loss) income from discontinued operations		18	(11,495)	338	(47,272)
Pretax gain (loss) on disposal of discontinued operations				120,574
Total pretax loss from discontinued operations				120,912
Income tax provision			544	30	1,923
Total loss from discontinued operations		18	(12,039)	120,882	(49,195)
Loss from discontinued operations attributable to noncontrolling interest		0	8,342	(333)	32,957
Loss from discontinued operations attributable to TETRA stockholders		18	(3,697)	120,549	(16,238)
Cash and cash equivalents		0	6,757	0	6,757	$ 16,577	$ 2,370
Trade receivables						43,837
Inventories						31,220
Other current assets						5,231
Property, plant, and equipment						551,401
Other assets						61,740
Total assets associated with discontinued operations						710,006
Assets of discontinued operations		0		0		710,006
Trade payables		1,099		1,099		20,988
Unearned Income						269
Accrued liabilities and other		228		228		36,898
Long-term debt, net						638,631
Other liabilities						37,253
Total liabilities associated with discontinued operations		1,327		1,327		734,039
CSI Compressco | Discontinued Operations, Held-for-sale or Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses	$ 13,400
Proceeds from sale of CCLP, net of cash divested	500
Consideration transferred	3,100
Gain on disposition of business	$ 120,600
CSI Compressco | Discontinued Operations, Held-for-sale or Disposed of by Sale | Limited Partner [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
General partner, ownership interest	23.10%
Compression Division [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue			79,117	18,968	265,727
Cost of revenues		0	49,414	11,474	167,279
Depreciation, amortization, and accretion			19,948		59,972
Impairments and other charges					14,348
General and administrative expense		0	9,133	2,796	29,474
Interest expense, net			13,293	4,336	38,839
Other expense, net		150	(1,348)	164	2,932
Pretax (loss) income from discontinued operations		(150)	(11,323)	198	(47,117)
Cash and cash equivalents						16,577
Trade receivables						43,837
Inventories						31,220
Other current assets						5,231
Property, plant, and equipment						551,401
Other assets						61,740
Total assets associated with discontinued operations						710,006
Trade payables						19,766
Unearned Income						269
Accrued liabilities and other						36,318
Long-term debt, net						638,631
Other liabilities						37,253
Total liabilities associated with discontinued operations						732,237
Compression Division [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Capital expenditure, discontinued operations				3,000	10,800
Proceeds from long-term debt					337,500
Repayments of long-term debt					341,200
Proceeds on sale of property, plant, and equipment					21,700
Amortization of financing discounts, costs and gains					2,000
Offshore Services [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue			0	0	0
Cost of revenues		(174)	2	(146)	(332)
Depreciation, amortization, and accretion			0		0
Impairments and other charges					0
General and administrative expense		6	170	6	487
Interest expense, net			0	0	0
Other expense, net		0	0	0	0
Pretax (loss) income from discontinued operations		168	$ (172)	140	$ (155)
Cash and cash equivalents						0
Trade receivables						0
Inventories						0
Other current assets						0
Property, plant, and equipment						0
Other assets						0
Total assets associated with discontinued operations						0
Trade payables		1,099		1,099		1,222
Unearned Income						0
Accrued liabilities and other		0		0		352
Long-term debt, net						0
Other liabilities						0
Total liabilities associated with discontinued operations		1,099		1,099		1,574
Maritech [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents						0
Trade receivables						0
Inventories						0
Other current assets						0
Property, plant, and equipment						0
Other assets						0
Total assets associated with discontinued operations						0
Trade payables		0		0		0
Unearned Income						0
Accrued liabilities and other		228		228		228
Long-term debt, net						0
Other liabilities						0
Total liabilities associated with discontinued operations		$ 228		$ 228		$ 228

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)segment	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Revenue from Contract with Customer [Abstract]
Contract with customer, asset balances	$ 16.9	$ 16.9	$ 12.8
Deferred Revenue	$ 1.4	$ 1.4	$ 2.7
Number of Reportable Segments	2	2

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Revenue Performance Obligation (Details)	Sep. 30, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenues from external customers	$ 95,474	$ 73,484	$ 275,124	$ 302,257
United States
Disaggregation of Revenue [Line Items]
Revenues from external customers	64,763	34,780	178,983	182,089
International
Disaggregation of Revenue [Line Items]
Revenues from external customers	30,711	38,704	96,141	120,168
Completion Fluids & Products Division
Disaggregation of Revenue [Line Items]
Revenues from external customers	48,691	51,950	159,819	198,533
Completion Fluids & Products Division | United States
Disaggregation of Revenue [Line Items]
Revenues from external customers	22,529	15,013	72,353	85,073
Completion Fluids & Products Division | International
Disaggregation of Revenue [Line Items]
Revenues from external customers	26,162	36,937	87,466	113,460
Water & Flowback Services Division
Disaggregation of Revenue [Line Items]
Revenues from external customers	46,783	21,534	115,305	103,724
Water & Flowback Services Division | United States
Disaggregation of Revenue [Line Items]
Revenues from external customers	42,234	19,767	106,630	97,016
Water & Flowback Services Division | International
Disaggregation of Revenue [Line Items]
Revenues from external customers	$ 4,549	$ 1,767	$ 8,675	$ 6,708

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Inventory, Finished Goods, Gross	$ 62,510	$ 68,121
Inventory, Raw Materials, Gross	3,604	2,910
Other Inventory, Supplies, Gross	4,524	4,001
Inventory, Work in Process, Gross	1,648	1,626
Inventories	$ 72,286	$ 76,658

Investments in and Advances to

Investments in and Advances to Affiliates (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investments in and Advances to Affiliates [Line Items]
Total Investments	$ 22,412	$ 2,675
CSI Compressco
Investments in and Advances to Affiliates [Line Items]
Ownership percentage	10.90%
Total Investments	$ 9,404	0
Standard Lithium
Investments in and Advances to Affiliates [Line Items]
Total Investments	$ 13,008	$ 2,675

Long-Term Debt and Other Borr_3

Long-Term Debt and Other Borrowings - Schedule of Long Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Parent Company
Debt Instrument [Line Items]
Long-term Debt	$ 164,228	$ 199,894
Unamortized deferred finance costs	1,700
Revolving Credit Facility | Secured Debt
Debt Instrument [Line Items]
Long-term Debt	0	0
Term Loan | Secured Debt
Debt Instrument [Line Items]
Long-term Debt	164,228	199,894
Debt Instrument, Unamortized Discount (Premium), Net	4,800	5,500
Unamortized deferred finance costs	$ 7,100	$ 8,200

Long-Term Debt and Other Borr_4

Long-Term Debt and Other Borrowings - Additional Information (Details) - USD ($)	Jul. 30, 2021	Sep. 30, 2021
Parent Company
Debt Instrument [Line Items]
Unamortized deferred finance costs		$ 1,700,000
Line of Credit | ABL Credit Agreement
Debt Instrument [Line Items]
Debt prepayment cost	$ 8,200,000
Line of Credit | Revolving Credit Facility | ABL Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	80,000,000
Accordion feature	20,000,000
Line of Credit | Letter of Credit | Sub-Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 15,000,000
Line of Credit | Parent Company
Debt Instrument [Line Items]
Bank line of credit, net availability		48,200,000
Line of Credit | Parent Company | ABL Credit Agreement
Debt Instrument [Line Items]
Value of amount outstanding		0
Bank line of credit, letters of credit and guarantees		$ 6,200,000

Commitment and Contingencies (D

Commitment and Contingencies (Details) $ in Millions	Jul. 23, 2021USD ($)
CarbonFree Chemical Holdings
Long-term Purchase Commitment [Line Items]
Contingent Investment Commitment, Convertible Notes	$ 5

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details)	Sep. 30, 2021
Warrants liability | (Level 3) | Measurement Input, Price Volatility
Derivative [Line Items]
Derivative Liability, Measurement Input	0.60

Fair Value Measurements - Marke

Fair Value Measurements - Market Risks and Derivative Hedge Contracts (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Net asset	$ 22,356	$ 2,477
CSI Compressco | (Level 1)
Derivatives, Fair Value [Line Items]
Net asset	9,404
CSI Compressco | (Level 2)
Derivatives, Fair Value [Line Items]
Net asset	0
CSI Compressco | (Level 3)
Derivatives, Fair Value [Line Items]
Net asset	0
Standard Lithium | (Level 1)
Derivatives, Fair Value [Line Items]
Net asset	13,008	(2,675)
Standard Lithium | (Level 2)
Derivatives, Fair Value [Line Items]
Net asset	0	0
Standard Lithium | (Level 3)
Derivatives, Fair Value [Line Items]
Net asset	0	0
Warrants liability
Derivatives, Fair Value [Line Items]
Net asset	(56)	(198)
Warrants liability | (Level 1)
Derivatives, Fair Value [Line Items]
Net asset	0	0
Warrants liability | (Level 2)
Derivatives, Fair Value [Line Items]
Net asset	0	0
Warrants liability | (Level 3)
Derivatives, Fair Value [Line Items]
Net asset	$ (56)	$ (198)

Net Income (Loss) per Share - R

Net Income (Loss) per Share - Reconciliation of the Weighted Average Number of Common Shares Outstanding (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Number of weighted average common shares outstanding ( in shares)	126,733	125,893	126,489	125,789
Assumed exercise of equity awards and warrants (in shares)	1,961	0	0	0
Average diluted shares outstanding (in shares)	128,694	125,893	126,489	125,789

Net Income (Loss) per Share - A

Net Income (Loss) per Share - Additional Information (Details) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	93,000	1,767,000	17,000

Industry Segments - Additional

Industry Segments - Additional Details (Details) - 9 months ended Sep. 30, 2021	segment	Total
Segment Reporting [Abstract]
Number of Reportable Segments	2	2

Industry Segments - Revenue, In

Industry Segments - Revenue, Income from Operations, and Assets by Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Industry Segments Details [Line Items]
Revenues from external customers	$ 95,474	$ 73,484	$ 275,124	$ 302,257
Income (loss) before taxes and discontinued operations	3,082	(9,458)	(13,963)	(17,869)
Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	48,691	51,950	159,819	198,533
Income (loss) before taxes and discontinued operations	14,675	11,756	40,113	44,354
Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	46,783	21,534	115,305	103,724
Income (loss) before taxes and discontinued operations	(1,807)	(7,746)	(12,265)	(18,408)
Interdivision eliminations
Industry Segments Details [Line Items]
Income (loss) before taxes and discontinued operations	3	4	9	10
Corporate Overhead
Industry Segments Details [Line Items]
Income (loss) before taxes and discontinued operations	(9,789)	(13,472)	(41,820)	(43,825)
Product sales
Industry Segments Details [Line Items]
Revenues from external customers	46,340	50,009	153,955	187,475
Product sales | Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	46,322	49,986	153,905	187,419
Product sales | Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	18	23	50	56
Services
Industry Segments Details [Line Items]
Revenues from external customers	49,134	23,475	121,169	114,782
Services | Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	2,369	1,964	5,914	11,114
Services | Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	$ 46,765	$ 21,511	$ 115,255	$ 103,668

Industry Segments - Corporate E

Industry Segments - Corporate Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
General and administrative expense	$ 18,714	$ 16,123	$ 56,077	$ 60,333
Depreciation, amortization, and accretion	8,308	9,657	25,495	28,934
Interest expense, net	4,083	4,338	12,373	14,234
Warrants fair value adjustment			(143)	(326)
Other general corporate income, net	(6,968)	(788)	(14,295)	(1,308)
Total	(2,495)	9,559	16,102	19,746
Corporate Overhead
Segment Reporting Information [Line Items]
General and administrative expense	8,409	8,959	30,973	28,650
Depreciation, amortization, and accretion	228	270	646	643
Interest expense, net	4,247	4,706	13,354	14,909
Warrants fair value adjustment	(3,164)	0	(143)	(327)
Other general corporate income, net	69	(463)	(3,010)	(50)
Total	$ 9,789	$ 13,472	$ 41,820	$ 43,825