TETRA (TTI) 10-Q 10 May 18 2018 Q4 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 09, 2018
Document Information [Line Items]
Entity Registrant Name	TETRA TECHNOLOGIES INC
Entity Central Index Key	844,965
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock Shares Outstanding		125,569,741
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q4
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Gain (Loss) on Disposition of Business	$ 31,457
Revenues:
Product sales	75,953	$ 67,978
Services and rentals	123,428	91,431
Total revenues	199,381	159,409
Cost of revenues:
Cost of product sales	60,214	49,582
Cost of services and rentals	84,743	63,649
Depreciation, amortization, and accretion	26,441	26,524
Total cost of revenues	171,398	139,755
Gross profit	27,983	19,654
General and administrative expense	30,803	26,751
Interest expense, net	14,973	13,767
Fair Value Adjustment Of Warrants, Income Statement	(1,994)	(5,976)
Preferred, Fair Value Adjustment	1,358	1,631
Litigation Settlement, Amount	0	(12,816)
Other (income) expense, net	2,776	461
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(19,933)	(4,164)
Income (loss) before taxes	(21,057)	(4,245)
Provision (benefit) for income taxes	1,124	81
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(41,706)	(7,007)
Net income (loss)	(62,763)	(11,252)
(Income) loss attributable to noncontrolling interest	9,115	8,789
Net income (loss) attributable to TETRA stockholders	$ (53,648)	$ (2,463)
Basic net income per common share:
Net income (loss) attributable to TETRA stockholders	$ (0.46)	$ (0.02)
Average shares outstanding	117,598	114,197
Income (Loss) from Continuing Operations, Per Diluted Share	$ (0.10)	$ 0.04
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	(0.36)	(0.06)
Income (Loss) from Continuing Operations, Per Basic and Diluted Share	(0.10)	0.04
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	(0.36)	(0.06)
Diluted net income per common share:
Net income (loss) attributable to TETRA stockholders	$ (0.46)	$ (0.02)
Average diluted shares outstanding	117,598	114,304

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (62,763)	$ (11,252)
Foreign currency translation adjustment, including taxes of $0 and $0 in 2015 and $1,198 and $1,644 in 2014	1,283	2,193
Comprehensive income	(61,480)	(9,059)
Comprehensive (income) loss attributable to noncontrolling interest	9,500	8,648
Comprehensive income (loss) attributable to TETRA stockholders	$ (51,980)	$ (411)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 104,113	$ 26,128
Restricted cash	8,978	261
Trade accounts receivable, net of allowances	175,262	144,051
Inventories	127,925	115,438
Assets held for sale	7,907	121,134
Prepaid expenses and other current assets	22,618	17,597
Total current assets	446,803	424,609
Property, plant, and equipment:
Land and building	78,940	78,559
Machinery and equipment	1,195,458	1,167,680
Automobiles and trucks	36,392	34,744
Chemical plants	189,173	186,790
Construction in progress	37,930	31,566
Total property, plant, and equipment	1,537,893	1,499,339
Less accumulated depreciation	(713,125)	(689,907)
Net property, plant, and equipment	824,768	809,432
Other assets:
Goodwill	21,856	6,636
Patents, trademarks and other intangible assets, net of accumulated amortization	88,134	47,405
Deferred tax assets, net	10	10
Notes, Loans and Financing Receivable, Net, Current	7,462	44
Other assets	19,229	20,478
Total other assets	136,691	74,573
Total assets	1,408,262	1,308,614
Current liabilities:
Trade accounts payable	60,135	70,847
Unearned income	38,168	18,701
Accrued liabilities	45,171	58,478
Disposal Group, Including Discontinued Operation, Liabilities	14,287	71,874
Total current liabilities	157,761	219,900
Long-term debt, net of current portion	823,565	629,855
Deferred income taxes	4,040	4,404
Decommissioning and other asset retirement obligations, net	11,929	11,738
Preferred Units	54,214	61,436
Warranty Liability	11,207	13,202
Other liabilities	20,085	15,518
Total long-term liabilities	925,040	736,153
Equity:
Common stock, par value $0.01 per share	1,282	1,185
Additional paid-in capital	455,046	425,648
Treasury stock, at cost	(18,821)	(18,651)
Accumulated other comprehensive income (loss)	(42,099)	(43,767)
Retained earnings	(209,983)	(156,335)
Total TETRA stockholders' equity	185,425	208,080
Noncontrolling interests	140,036	144,481
Total equity	325,461	352,561
Total liabilities and equity	$ 1,408,262	$ 1,308,614

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Trade accounts receivable, allowances for doubtful accounts	$ 1,073	$ 1,286
Other assets:
Patents, trademarks, and other intangible assets, accumulated amortization	$ 72,946	$ 71,114
Equity:
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	128,212,198	118,515,797
Treasury stock, shares held	2,683,245	2,638,093

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Cash Flows [Abstract]
Gain (Loss) on Disposition of Assets	$ 32,369	$ 0
Payments Related to Tax Withholding for Share-based Compensation	(293)	0
Operating activities:
Net income (loss)	(62,763)	(11,252)
Reconciliation of net income (loss) to cash provided by (used in) operating activities:
Depreciation, amortization, and accretion	28,509	29,478
Provision (benefit) for deferred income taxes	(61)	(6)
Equity-based compensation expense	876	2,469
Provision for doubtful accounts	453	772
Amortization of deferred financing costs	1,224	1,091
Offering Costs of Preferred Units	0	37
Paid-in-Kind Interest	1,523	1,955
Liabilities, Fair Value Adjustment	1,358	1,631
Warrants fair value adjustment	(1,995)	(5,976)
Other non-cash charges and credits	3,668	(532)
Gain on sale of assets	90	(83)
Changes in operating assets and liabilities, net of assets acquired:
Accounts receivable	6,584	(10,909)
Inventories	(13,467)	(10,627)
Prepaid expenses and other current assets	(4,311)	(527)
Trade accounts payable and accrued expenses	(24,586)	(16,919)
Decommissioning liabilities, net	0	(474)
Other	(732)	(666)
Net cash provided by (used in) operating activities	(31,261)	(20,538)
Investing activities:
Purchases of property, plant, and equipment	(28,892)	(5,060)
Payments to Acquire Businesses, Net of Cash Acquired	42,002	0
Proceeds from Divestiture of Businesses	3,121	0
Proceeds on sale of property, plant, and equipment	76	248
Other investing activities	146	196
Net cash provided by (used in) investing activities	(67,551)	(4,616)
Financing activities:
Proceeds from long-term debt	474,550	74,550
Principal payments on long-term debt	(278,150)	(59,150)
CSI Compressco LP distributions	(4,358)	(7,248)
Other financing activities	(6,139)	(119)
Net cash provided by (used in) financing activities	185,610	8,033
Effect of exchange rate changes on cash	(96)	112
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	86,702	(17,009)
Cash, cash equivalents, and restricted cash	113,091	19,522
Supplemental cash flow information:
Interest paid	17,710	14,395
Income taxes paid	$ 1,331	$ 1,929

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies (Notes)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES We are a geographically diversified oil and gas services company, focused on completion fluids and associated products and services, water management, frac flowback, production well testing and offshore rig cooling services, and compression services and equipment. We were incorporated in Delaware in 1981. Following the acquisition and disposition transactions that closed during the three month period ended March 31, 2018 , we reorganized our reporting segments and are now composed of three divisions – Completion Fluids & Products, Water & Flowback Services, and Compression . 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. Our consolidated financial statements include the accounts of our wholly owned subsidiaries. All intercompany accounts 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 March 31, 2018 are not necessarily indicative of results that may be expected for the twelve months ended December 31, 2018 . We consolidate the financial statements of CSI Compressco LP and its subsidiaries ("CCLP") as part of our Compression Division, as we determined that CCLP is a variable interest entity and we are the primary beneficiary. We control the financial interests of CCLP and have the ability to direct the activities of CCLP that most significantly impact its economic performance through our ownership of its general partner. The share of CCLP net assets and earnings that is not owned by us is presented as noncontrolling interest in our consolidated financial statements. Our cash flows from our investment in CCLP are limited to the quarterly distributions we receive on our CCLP common units and general partner interest (including incentive distribution rights) and the amounts collected for services we perform on behalf of CCLP, as TETRA's capital structure and CCLP's capital structure are separate, and do not include cross default provisions, cross collateralization provisions, or cross guarantees. 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 Securities and Exchange Commission ("SEC") and do not include all information and footnotes required by generally accepted accounting principles for complete financial statements. These financial statements should be read in connection with the financial statements for the year ended December 31, 2017 , and notes thereto included in our Annual Report on Form 10-K, which we filed with the SEC on March 5, 2018 . We have reviewed our financial forecasts as of May 10, 2018 for the subsequent twelve month period, which consider the impact of the current distribution levels from CCLP. Based on our financial forecasts, which reflect certain operating and other business assumptions that we believe to be reasonable as of May 10, 2018 , we believe that we will have adequate liquidity, earnings, and operating cash flows to fund our operations and debt obligations and maintain compliance with our debt covenants through May 10, 2019. In March 2018, CCLP closed an offering of CCLP senior secured notes in the aggregate amount of $350.0 million , and a portion of the proceeds were used to repay and terminate CCLP's bank revolving credit facility (as amended, the "CCLP Credit Agreement"). (See Note D - Long-Term Debt and Other Borrowings.) Based on its financial forecasts that reflect the current level of distributions and certain operating and other business assumptions that CCLP believes to be reasonable as of May 10, 2018 , CCLP believes that it will have adequate liquidity, earnings, and operating cash flows to fund its operations and debt obligations and maintain compliance with its debt covenants through May 10, 2019. Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("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 period’s presentation. For a discussion of the reclassification of the financial presentation of our Offshore Division as discontinued operations, see Note C - Discontinued Operations. Cash Equivalents We consider all highly liquid cash investments with a maturity of three months or less when purchased to be cash equivalents. Restricted Cash Restricted cash is classified as a current asset when it is expected to be repaid or settled in the next twelve month period. Restricted cash as of March 31, 2018 consists of cash used to secure outstanding letters of credit of our Compression Division. Inventories Inventories are stated at the lower of cost or net realizable value. Except for work in progress inventory discussed below, cost is determined using the weighted average method. Components of inventories as of March 31, 2018 and December 31, 2017 are as follows: March 31, 2018 December 31, 2017 (In Thousands) Finished goods $ 67,283 $ 66,377 Raw materials 3,692 4,027 Parts and supplies 36,584 33,632 Work in progress 20,366 11,402 Total inventories $ 127,925 $ 115,438 Finished goods inventories include newly manufactured clear brine fluids as well as used brines that are repurchased from certain customers for recycling. Recycled brines are recorded at cost, using the weighted average method. Work in progress inventory consists primarily of new compressor packages located in the CCLP fabrication facility in Midland, Texas. The cost of work in progress is determined using the specific identification method. We write down the value of inventory by an amount equal to the difference between its cost and its estimated net realizable value. 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 2018 2017 (In Thousands) Number of weighted average common shares outstanding 117,598 114,197 Assumed exercise of equity awards and warrants — 107 Average diluted shares outstanding 117,598 114,304 For the three month period ended March 31, 2018 , the average diluted shares outstanding excludes the impact of all outstanding equity awards and warrants, as the inclusion of these shares would have been anti-dilutive due to the net losses recorded during the periods. In addition, for the three month periods ended March 31, 2018 and March 31, 2017 , the calculation of diluted earnings per common share excludes the impact of the CCLP Preferred Units, as the inclusion of the impact from conversion of the CCLP Preferred Units into CCLP common units would have been anti-dilutive. Foreign Currency Translation We have designated the euro, the British pound, the Norwegian krone, the Canadian dollar, the Brazilian real, the Argentine peso, and the Mexican peso, respectively, as the functional currency for our operations in Finland and Sweden, the United Kingdom, Norway, Canada, Brazil, Argentina, and certain of our operations in Mexico. The U.S. dollar is the designated functional currency for all of our other foreign operations. The cumulative translation effects of translating the applicable accounts from the functional currencies into the U.S. 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 $0.9 million and $(0.6) million during the three month periods ended March 31, 2018 and March 31, 2017 , respectively. Income Taxes Our consolidated provision for income taxes during the first three months of 2017 and 2018 is primarily attributable to taxes in certain foreign jurisdictions and Texas gross margin taxes. Our consolidated effective tax rate for the three month period ended March 31, 2018 of negative 5.6% was primarily the result of losses generated in entities for which no related tax benefit has been recorded. The losses generated by these entities do not result in tax benefits due to offsetting valuation allowances being recorded against the related net deferred tax assets. We establish a valuation allowance to reduce the deferred tax assets when it is more likely than not that some portion or all of the deferred tax assets will not be realized. Included in our deferred tax assets are net operating loss carryforwards and tax credits that are available to offset future income tax liabilities in the U.S. as well as in certain foreign jurisdictions. The Tax Cuts and Jobs Act (the “Act”) was enacted on December 22, 2017. At March 31, 2018 and December 31, 2017, we had not completed our accounting for the tax effects of enactment of the Act; however, in certain cases, as described below, we made reasonable estimates of the effects and recorded provisional amounts. We will continue to make and refine our calculations as additional analysis is completed. We recognized an income tax expense of $54.1 million in the fourth quarter of 2017 associated with the impact of the Act in our 2017 filing. This income tax expense was fully offset by a decrease in the valuation allowance previously recorded on our net deferred tax assets. As such, the Act resulted in no net tax expense in the fourth quarter of 2017. We have considered in our estimated annual effective tax rate for 2018, the impact of the statutory changes enacted by the Act, including reasonable estimates of those provisions effective for the 2018 tax year. Our provisional estimate on Global Intangible Low Taxed Income (“GILTI”), Foreign Derived Intangible Income (“FDII”), Base Erosion and Anti-Abuse Tax (“BEAT”), and IRC Section 163(j) interest limitation do not impact our effective tax rate for the three months ended March 31, 2018. The accounting for the tax effects of the Act will be completed in 2018 as provided by the U.S. Securities and Exchange Commission’s SAB No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act. Asset Retirement Obligations We operate facilities in various U.S. and foreign locations that are used in the manufacture, storage, and sale of our products, inventories, and equipment. These facilities are a combination of owned and leased assets. The values of our asset retirement obligations for these properties were $11.9 million and $11.7 million as of March 31, 2018 and December 31, 2017 , respectively. We are required to take certain actions in connection with the retirement of these assets. Asset retirement obligations are recorded in accordance with FASB ASC 410, "Asset Retirement and Environmental Obligations," whereby the estimated fair value of a liability for asset retirement obligations is recognized in the period in which it is incurred and in which a reasonable estimate can be made. Such estimates are based on relevant assumptions that we believe are reasonable. We have reviewed our obligations in this regard in detail and estimated the cost of these actions. The associated asset retirement costs are capitalized as part of the carrying amount of these long-lived assets and are depreciated on a straight-line basis over the life of the assets. The changes in the values of our asset retirement obligations during the three month period ended March 31, 2018 , are as follows: Three Months Ended March 31, 2018 (In Thousands) Beginning balance for the period, as reported $ 11,738 Activity in the period: Accretion of liability 159 Revisions in estimated cash flows 32 Ending balance $ 11,929 We review the adequacy of our asset retirement obligation liabilities whenever indicators suggest that the estimated cash flows underlying the liabilities have changed. Fair Value Measurements Fair value is defined 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” within an entity’s principal market, if any. The principal market is the market in which the reporting entity would sell the asset or transfer the liability with the greatest volume and level of activity, regardless of whether it is the market in which the entity will ultimately transact for a particular asset or liability or if a different market is potentially more advantageous. Accordingly, this exit price concept may result in a fair value that may differ from the transaction price or market price of the asset or liability. Under U.S. generally accepted accounting principles ("GAAP"), the fair value hierarchy prioritizes inputs to valuation techniques used to measure fair value. Fair value measurements should maximize the use of observable inputs and minimize the use of unobservable inputs, where possible. Observable inputs are developed based on market data obtained from sources independent of the reporting entity. Unobservable inputs may be needed to measure fair value in situations where there is little or no market activity for the asset or liability at the measurement date and are developed based on the best information available in the circumstances, which could include the reporting entity’s own judgments about the assumptions market participants would utilize in pricing the asset or liability. 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 value of the liability for the warrants to purchase 11.2 million shares of our common stock (the "Warrants") and CCLP Preferred Units (as herein defined). We also utilize fair value measurements on a recurring basis in the accounting for our foreign currency derivative contracts. For these fair value measurements, we utilize the quoted value as determined by our counterparty financial institution (a level 2 fair value measurement). Fair value measurements are also utilized on a nonrecurring basis, such as in the allocation of purchase consideration for acquisition transactions to the assets and liabilities acquired, including intangible assets and goodwill (a level 3 fair value measurement), the initial recording of our asset retirement obligations, and for the impairment of long-lived assets, including goodwill (a level 3 fair value measurement). The fair value of certain of our financial instruments, which include cash, restricted cash, accounts receivable, accounts payable, short-term borrowings, and long-term debt pursuant to our bank credit agreement, approximate their carrying amounts. The aggregate fair values of our long-term 11% Senior Note at March 31, 2018 and December 31, 2017 , were approximately $128.5 million and $130.8 million , respectively, based on current interest rates on those dates, which were different from the stated interest rate on the 11% Senior Note. Those fair values compare to face amounts of the 11% Senior Note of $125.0 million both at March 31, 2018 and December 31, 2017 . The fair values of the publicly traded CCLP 7.25% Senior Notes (as herein defined) at March 31, 2018 and December 31, 2017 , were approximately $277.4 million and $279.7 million , respectively. Those fair values compare to a face amount of $ 295.9 million both at March 31, 2018 and December 31, 2017 . The fair value of the publicly traded CCLP 7.50% Senior Secured Notes at March 31, 2018 was approximately $353.5 million . This fair value compares to aggregate principal amount of such notes at March 31, 2018 of $350.0 million . We calculated the fair values of our 11% Senior Note as of March 31, 2018 and December 31, 2017 internally, using current market conditions and average cost of debt (a level 2 fair value measurement). We based the fair values of the CCLP 7.25% Senior Notes and the CCLP 7.50% Senior Secured Notes as of March 31, 2018 on recent trades for these notes (a level 1 fair value measurement). See Note D - Long-Term Debt and Other Borrowings, for further discussion. The CCLP Preferred Units are valued using a lattice modeling technique that, among a number of lattice structures, includes significant unobservable items (a Level 3 fair value measurement). These unobservable items include (i) the volatility of the trading price of CCLP's common units compared to a volatility analysis of equity prices of CCLP's comparable peer companies, (ii) a yield analysis that utilizes market information related to the debt yields of comparable peer companies, and (iii) a future conversion price analysis. The fair valuation of the CCLP Preferred Units liability is increased by, among other factors, projected increases in CCLP's common unit price and by increases in the volatility and decreases in the debt yields of CCLP's comparable peer companies. Increases (or decreases) in the fair value of CCLP Preferred Units will increase (decrease) the associated liability and result in future adjustments to earnings for the associated valuation losses (gains). During the three months ended March 31, 2018 , the fair value of the CCLP Preferred Units increased by $1.4 million , which was charged to earnings in the consolidated statement of operations. The Warrants are valued either by using their traded market prices (a level 1 fair value measurement) or, for periods when market prices are not available, by using the Black Scholes option valuation model that includes estimates of the volatility of the Warrants implied by their trading prices (a level 3 fair value measurement). As of March 31, 2018 and December 31, 2017 , the fair valuation methodology utilized for the Warrants was a level 3 fair value measurement, as there were no available traded market prices to value the Warrants. The fair valuation of the Warrants liability is increased by, among other factors, increases in our common stock price, and by increases in the volatility of our common stock price. Increases (or decreases) in the fair value of the Warrants will increase (decrease) the associated liability and result in future adjustments to earnings for the associated valuation losses (gains). During the three months ended March 31, 2018 , the fair value of the Warrants liability decreased by $2.0 million , which was credited to earnings in the consolidated statement of operations. During the third quarter of 2017 and the first quarter of 2018, we issued stand-alone, cash-settled stock appreciation rights awards to an executive officer. These awards are valued by using the Black Scholes option valuation model and such fair value is recognized based on the portion of the requisite service period satisfied as of each valuation date. The fair valuation of the stock appreciation rights liability is increased by, among other factors, increases in our common stock price, and by increases in the volatility of our common stock price. This stock appreciation rights awards are reflected as an accrued liability in our consolidated balance sheet. Increases (or decreases) in the fair value of the stock appreciation rights awards will increase (decrease) the associated liability and result in future adjustments to earnings for the associated valuation losses (gains). A summary of these fair value measurements as of March 31, 2018 and December 31, 2017 , is 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 March 31, 2018 (Level 1) (Level 2) (Level 3) (In Thousands) CCLP Series A Preferred Units $ (54,214 ) $ — $ — $ (54,214 ) Warrants liability (11,207 ) — — (11,207 ) Cash-settled stock appreciation rights (142 ) — — (142 ) Asset for foreign currency derivative contracts 104 — 104 — Liability for foreign currency derivative contracts (264 ) — (264 ) — Net liability $ (65,723 ) 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, 2017 (Level 1) (Level 2) (Level 3) (In Thousands) CCLP Series A Preferred Units $ (61,436 ) $ — $ — $ (61,436 ) Warrants liability (13,202 ) — — (13,202 ) Cash-settled stock appreciation rights (97 ) — — (97 ) Asset for foreign currency derivative contracts 241 — 241 — Liability for foreign currency derivative contracts (378 ) — (378 ) — Net liability $ (74,872 ) New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers." This ASU supersedes the revenue recognition requirements in Accounting Standards Codification ("ASC") 605, "Revenue Recognition", and most industry-specific guidance. This ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those years, under either full or modified retrospective adoption. In March 2016, the FASB issued ASU 2016-08, "Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)" to clarify the guidance on principal versus agent considerations. This ASU does not change the effective date or adoption method under ASU 2014-09 which is noted above. In April 2016, the FASB issued ASU 2016-10, "Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing" to clarify the guidance on identifying performance obligations and the licensing implementation guidance. This ASU does not change the effective date or adoption method under ASU 2014-09, which is noted above. Additionally, in May 2016, the FASB issued ASU 2016-12, "Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients." This ASU addresses and amends several aspects of ASU 2014-09, but does not change the core principle of the guidance. This ASU does not change the effective date or adoption method under ASU 2014-09 which is noted above. On January 1, 2018, we adopted ASU 2014-09 and all related amendments ("ASU 2014-09"). We utilized the modified retrospective method of adoption. Comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also provides a five-step model for determining revenue recognition for arrangements that are within the scope of the standard: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. We only apply the five-step model to contracts when it is probable that we will collect the consideration we are entitled to in exchange for the goods or services we transfer to the customer. At contract inception, once the contract is determined to be within the scope of ASU 2014-09, we assess the goods or services promised within each contract and determine those that are performance obligations and assess whether each promised good or service is distinct. We then recognize as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. For a complete discussion of accounting for revenues, see Note J - Revenue from Contracts with Customers. The impact from the adoption of ASU 2014-09 to our January 1, 2018 consolidated balance sheet, our March 31, 2018 consolidated balance sheet, and our consolidated results of operations for the three months ended March 31, 2018 was immaterial. The adoption of ASU 2014-09 had no impact to cash provided by operating, financing, or investing activities in our consolidated statement of cash flows. We do not expect the adoption of the new revenue standard to have a material impact to our net income on an ongoing basis. In February 2016, the FASB issued ASU 2016-02, "Leases" (Topic 842) to increase comparability and transparency among different organizations. Organizations are required to recognize lease assets and lease liabilities on the balance sheet and disclose key information about the leasing arrangements and cash flows. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods, under a modified retrospective adoption with early adoption permitted. We are currently assessing the potential effects of these changes to our consolidated financial statements. 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 more timely recognition of losses. ASU 2016-13, which has an effective date of the first quarter of fiscal 2022, also applies to employee benefit plan accounting. We are currently assessing the potential effects of these changes to our consolidated financial statements and employee benefit plan accounting. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments" to reduce diversity in practice in classification of certain transactions in the statement of cash flows. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption permitted, under a retrospective transition adoption. We adopted this ASU during the three month period ended March 31, 2018, with no material impact to our consolidated financial statements. In November 2016, the FASB issued ASU 2016-16, "Intra-Entity Transfers of Assets Other Than Inventory" which requires companies to account for the income tax effects of intercompany transfers of assets other than inventory when the transfer occurs. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption permitted, under a modified retrospective transition adoption. We adopted this ASU during the three month period ended March 31, 2018. The adoption of this standard did not have a material impact to our consolidated financial statements due to a previously recorded valuation allowance on our net deferred tax assets. Additionally, in November 2016, the FASB issued ASU 2016-18, "Statement of Cash Flows (Topic 230): Restricted Cash" to reduce diversity in the presentation of restricted cash and restricted cash equivalents in the statement of cash flows. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption permitted, under a retrospective transition adoption. We adopted this ASU during the three month period ended March 31, 2018, resulting in restricted cash being classified with cash and cash equivalents in our consolidated statement of cash flows. In January 2017, the FASB issued ASU 2017-04, "Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" which simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. The ASU is effective for annual periods beginning after December 15, 2020, and interim periods within those annual periods, with early adoption permitted, under a prospective adoption. We do not expect the adoption of this standard to have a material impact on our consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, "Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting" to clarify when to account for a change to the terms or conditions of a share-based payment award as a modification. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption permitted. We adopted this ASU during the three month period ended March 31, 2018, with no material impact to our consolidated financial statements. In July 2017, the FASB issued ASU 2017-11, "Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception" to consider “down round” features when determining whether certain equity-linked financial instruments or embedded features are indexed to an entity’s own stock. Entities that present EPS under ASC 260 will recognize the effect of a down round feature in a freestanding equity-classified financial instrument only when it is triggered. The effect of triggering such a feature will be recognized as a dividend and a reduction to income available to common shareholders in basic EPS. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. We are currently assessing the potential effects of these changes to our consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities" to change how companies account for and disclose hedges. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. We are currently assessing the potential effects of these changes to our consolidated financial statements.

Discontinued Operations (Notes)

Discontinued Operations (Notes)	3 Months Ended
	Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	DISCONTINUED OPERATIONS As discussed in Note B - "Acquisitions and Dispositions," on March 1, 2018, we closed a series of related transactions that resulted in the disposition of our Offshore Division. As a result, we have accounted for our Offshore Division, consisting of our Offshore Services and Maritech segments, as discontinued operations and have revised prior period financial statements to exclude these businesses from continuing 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 March 31, 2018 Three Months Ended March 31, 2017 Offshore Services Maritech Total Offshore Services Maritech Total Major classes of line items constituting pretax loss from discontinued operations Revenue $ 4,477 $ 186 $ 4,663 $ 8,361 $ 231 $ 8,592 Cost of revenues 11,123 238 11,361 10,740 287 11,027 Depreciation, amortization, and accretion 1,856 213 2,069 2,584 370 2,954 General and administrative expense 1,253 186 1,439 1,468 237 1,705 Other (income) expense, net 39 — 39 (96 ) — (96 ) Pretax loss from discontinued operations (9,794 ) (451 ) (10,245 ) (6,335 ) (663 ) (6,998 ) Pretax loss on disposal of discontinued operations (33,788 ) — Total pretax loss from discontinued operations (44,033 ) (6,998 ) Income tax benefit (2,327 ) 9 Total loss from discontinued operations $ (41,706 ) $ (7,007 ) Reconciliation of Major Classes of Assets and Liabilities of the Discontinued Operations to Amounts Presented Separately in the Statement of Financial Position (in thousands) March 31, 2018 December 31, 2017 Offshore Services Maritech Total Offshore Services Maritech Total Carrying amounts of major classes of assets included as part of discontinued operations Trade receivables $ 6,474 $ 1,433 $ 7,907 $ 27,385 $ 1,542 $ 28,927 Inventories — — — 4,616 — 4,616 Property, plant, and equipment — — — 85,873 — 85,873 Other assets — — — 1,674 44 1,718 Total major classes of assets of the discontinued operations $ 6,474 $ 1,433 $ 7,907 $ 119,548 $ 1,586 $ 121,134 Carrying amounts of major classes of liabilities included as part of discontinued operations Trade payables 6,509 228 6,737 13,942 87 14,029 Accrued liabilities 5,328 2,222 7,550 8,905 2,278 11,183 Decommissioning and other asset retirement obligations — — — — 46,662 46,662 Total major classes of liabilities of the discontinued operations $ 11,837 $ 2,450 $ 14,287 $ 22,847 $ 49,027 $ 71,874

Long-Term Debt and Other Borrow

Long-Term Debt and Other Borrowings	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Long-Term Debt and Other Borrowings	LONG-TERM DEBT AND OTHER BORROWINGS We believe TETRA's capital structure and CCLP's capital structure should be considered separately, as there are no cross default provisions, cross collateralization provisions, or cross guarantees between CCLP's debt and TETRA's debt. Consolidated long-term debt as of March 31, 2018 and December 31, 2017 , consists of the following: March 31, 2018 December 31, 2017 (In Thousands) TETRA Scheduled Maturity Bank revolving line of credit facility (presented net of the unamortized deferred financing costs of $1.3 million as of March 31, 2018) September 30, 2019 $ 73,143 $ — 11.0% Senior Note, Series 2015 (presented net of the unamortized discount of $3.7 million as of March 31, 2018 and $3.9 million as of December 31, 2017 and net of unamortized deferred financing costs of $3.3 million as of March 31, 2018 and $3.4 million as of December 31, 2017) November 5, 2022 118,008 117,679 TETRA total debt 191,151 117,679 Less current portion — — TETRA total long-term debt $ 191,151 $ 117,679 CCLP CCLP Bank Credit Facility (presented net of the unamortized deferred financing costs of $4.0 million as of December 31, 2017), terminated March 22, 2018 August 4, 2019 — 223,985 CCLP 7.25% Senior Notes (presented net of the unamortized discount of $2.7 million as of March 31, 2018 and $2.8 million as of December 31, 2017 and net of unamortized deferred financing costs of $4.7 million as of March 31, 2018 and $5.0 million as of December 31, 2017) August 15, 2022 288,588 288,191 CCLP 7.50% Senior Secured Notes (presented net of unamortized deferred financing costs of $6.2 million as of March 31, 2018) March 22, 2025 343,826 — CCLP total debt 632,414 512,176 Less current portion $ — $ — Consolidated total long-term debt $ 823,565 $ 629,855 As of March 31, 2018 , TETRA (excluding CCLP) had a $74.4 million outstanding balance and $6.1 million in letters of credit against its Credit Agreement, leaving a net availability of $119.5 million . Availability under the TETRA Credit Agreement is subject to compliance with the covenants and other provisions in the credit agreement that may limit borrowings thereunder. The CCLP Credit Agreement was terminated in March 2018. As described below, we and CCLP are in compliance with all covenants of our respective debt and senior note agreements as of March 31, 2018 . Our Long-Term Debt Our Credit Agreement . At March 31, 2018 , our consolidated leverage ratio was 2.62 to 1 (compared to a 4.75 to 1 maximum allowed under the Credit Agreement) and our fixed charge coverage ratio was 2.54 to 1 (compared to a 1.25 to 1 minimum required under the Credit Agreement). CCLP Long-Term Debt CCLP Senior Secured Notes . On March 8, 2018 , CCLP, and its wholly owned subsidiary, CSI Compressco Finance Inc. (together with CCLP, the "CCLP Issuers") entered into the Purchase Agreement (the “Purchase Agreement”) with Merrill Lynch, Pierce, Fenner & Smith Incorporated as representative of the initial purchasers listed in Schedule A thereto (collectively, the “Initial Purchasers”), pursuant to which the CCLP Issuers agreed to issue and sell to the Initial Purchasers $350 million aggregate principal amount of the CCLP Issuers’ 7.50% Senior Secured First Lien Notes due 2025 (the "CCLP Senior Secured Notes") (the "CCLP Offering") pursuant to an exemption from the registration requirements of the Securities Act of 1933, as amended (the "Securities Act"). The CCLP Issuers closed the Offering on March 22, 2018. The CCLP Senior Secured Notes were issued at par for net proceeds of approximately $344.1 million , after deducting certain financing costs. CCLP used the net proceeds to repay in full and terminate its existing bank Credit Agreement and for general partnership purposes, including the expansion of its compression fleet. The CCLP Senior Secured Notes are jointly and severally, and fully and unconditionally, guaranteed (the "Guarantees" and, together with the CCLP Senior Secured Notes, the "CCLP Senior Secured Note Securities") on a senior secured basis initially by each of CCLP's domestic restricted subsidiaries (other than CSI Compressco Finance Inc., certain immaterial subsidiaries and certain other excluded domestic subsidiaries) and are secured by a first-priority security interest in substantially all of the CCLP Issuers' and the Guarantors' assets (other than certain excluded assets) (the "Collateral") as collateral security for their obligations under the CCLP Senior Secured Notes, subject to certain permitted encumbrances and exceptions. On the closing date, CCLP entered into an indenture (the "Indenture") by and among the Obligors and U.S. Bank National Association, as trustee with respect to the Securities. The CCLP Senior Secured Notes accrue interest at a rate of 7.50% per annum. Interest on the CCLP Senior Secured Notes is payable semi-annually in arrears on April 1 and October 1 of each year, beginning October 1, 2018. The CCLP Senior Secured Notes are scheduled to mature on April 1, 2025. During the three months ended March 31, 2018, CCLP incurred total financing costs of $6.2 million related to the CCLP Senior Secured Notes . These costs are deferred, netting against the carrying value of the amount outstanding. On and after April 1, 2021, CCLP may redeem all or a part of the CCLP Senior Secured Notes , from time to time, at the following redemption prices (expressed as a percentage of principal amount), plus accrued and unpaid interest thereon to, but not including, the applicable redemption date, subject to the right of holders of record on the relevant record date to receive interest due on the relevant interest payment date, if redeemed during the 12-month period beginning on April 1 of the years indicated below: Date Price 2021 105.625 % 2022 103.750 % 2023 101.875 % 2024 100.000 % In addition, any time or from time to time before April 1, 2021, CCLP may, at its option, redeem all or a portion of the CCLP Senior Secured Notes at a redemption price equal to 100% of the principal amount thereof plus the Applicable Premium (as defined in the Indenture) with respect to the CCLP Senior Secured Notes plus accrued and unpaid interest, if any, to, but not including, the applicable redemption date, subject to the rights of holders of the CCLP Senior Secured Notes on the relevant record date to receive interest due on the relevant interest payment date. Prior to April 1, 2021, CCLP may on one or more occasions redeem up to 35% of the principal amount of the CCLP Senior Secured Notes with an amount of cash not greater than the amount of the net cash proceeds from one or more equity offerings at a redemption price equal to 107.500% of the principal amount of the CCLP Senior Secured Notes to be redeemed, plus accrued and unpaid interest, if any, to, but not including, the date of redemption, subject to the right of holders of record on the relevant record date to receive interest due on the relevant interest payment date, provided that (a) at least 65% of the aggregate principal amount of the CCLP Senior Secured Notes originally issued on the issue date (excluding notes held by CCLP and its subsidiaries) remains outstanding after each such redemption; and (b) the redemption occurs within 180 days after the date of the closing of the equity offering. If CCLP experiences certain kinds of changes of control, each holder of the CCLP Senior Secured Notes will be entitled to require CCLP to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess of $2,000) of that holder’s CCLP Senior Secured Notes pursuant to an offer on the terms set forth in the Indenture. CCLP will offer to make a cash payment equal to 101% of the aggregate principal amount of the CCLP Senior Secured Notes repurchased plus accrued and unpaid interest, if any, on the CCLP Senior Secured Notes repurchased to the date of repurchase, subject to the rights of holders of the CCLP Senior Secured Notes on the relevant record date to receive interest due on the relevant interest payment date. The Indenture contains customary covenants restricting CCLP's ability and the ability of CCLP restricted subsidiaries to: (i) pay distributions on, purchase or redeem CCLP common units or purchase or redeem CCLP subordinated debt; (ii) incur or guarantee additional indebtedness or issue certain kinds of preferred equity securities; (iii) create or incur certain liens securing indebtedness; (iv) sell assets, including dispositions of the Collateral; (v) consolidate, merge or transfer all or substantially all of its assets; (vi) enter into transactions with affiliates; and (vii) enter into agreements that restrict distributions or other payments from its restricted subsidiaries to CCLP. These covenants are subject to a number of important limitations and exceptions, including certain provisions permitting CCLP, subject to the satisfaction of certain conditions, to transfer assets to certain of CCLP's unrestricted subsidiaries. Moreover, if the CCLP Senior Secured Notes receive an investment grade rating from at least two rating agencies and no default has occurred and is continuing under the Indenture, many of the restrictive covenants in the Indenture will be terminated. The Indenture also contains customary events of default and acceleration provisions relating to such events of default, which provide that upon an event of default under the Indenture, the Trustee or the holders of at least 25% in aggregate principal amount of the then outstanding CCLP Senior Secured Notes may declare all of the CCLP Senior Secured Notes to be due and payable immediately . On March 22, 2018, CCLP, the grantors named therein, the Trustee and U.S. Bank National Association, as the collateral trustee (the “Collateral Trustee”), entered into a collateral trust agreement (the “Collateral Trust Agreement”) pursuant to which the Collateral Trustee will receive, hold, administer, maintain, enforce and distribute the proceeds of all of its liens upon the collateral for the benefit of the current and future holders of the CCLP Senior Secured Notes and any future priority lien obligations, if any. CCLP Bank Credit Facilities. On March 22, 2018, in connection with the closing of the CCLP Offering, CCLP repaid all outstanding borrowings and obligations under its existing CCLP Credit Agreement with a portion of the net proceeds from the CCLP Offering, and terminated the CCLP Credit Agreement. As a result of the termination of the CCLP Credit Agreement, associated unamortized deferred financing costs of $3.5 million were charged to other (income) expense, net, during the three month period ended March 31, 2018.

CCLP Series A Preferred Units C

CCLP Series A Preferred Units CCLP Series A Preferred Units	3 Months Ended
	Mar. 31, 2018
Series A Preferred Units [Abstract]
CCLP Series A Preferred Units	CCLP SERIES A CONVERTIBLE PREFERRED UNITS During 2016, CCLP entered into Series A Preferred Unit Purchase Agreements (the “CCLP Unit Purchase Agreements”) with certain purchasers to issue and sell in private placements (the "Initial Private Placement" and "Subsequent Private Placement," respectively) an aggregate of 6,999,126 of CSI Compressco LP Series A Convertible Preferred Units representing limited partner interests in CCLP (the “CCLP Preferred Units”) for a cash purchase price of $11.43 per CCLP Preferred Unit (the “Issue Price”), resulting in total 2016 net proceeds to CCLP, after deducting certain offering expenses, of $77.3 million . We purchased 874,891 of the CCLP Preferred Units in the Initial Private Placement at the aggregate Issue Price of $10.0 million . We and the other holders of CCLP Preferred Units (each, a “CCLP Preferred Unitholder”) receive quarterly distributions, which are paid in kind in additional CCLP Preferred Units, equal to an annual rate of 11.00% of the Issue Price ( $1.2573 per unit annualized), subject to certain adjustments. The rights of the CCLP Preferred Units include certain anti-dilution adjustments, including adjustments for economic dilution resulting from the issuance of CCLP common units in the future below a set price. A ratable portion of the CCLP Preferred Units has been, and will continue to be, converted into CCLP common units on the eighth day of each month over a period of thirty months that began in March 2017 (each, a “Conversion Date”), subject to certain provisions of the Second Amended and Restated CCLP Partnership Agreement that may delay or accelerate all or a portion of such monthly conversions. On each Conversion Date, a portion of the CCLP Preferred Units will convert into CCLP common units representing limited partner interests in CCLP in an amount equal to, with respect to each CCLP Preferred Unitholder, the number of CCLP Preferred Units held by such CCLP Preferred Unitholder divided by the number of Conversion Dates remaining, subject to adjustment described in the Second Amended and Restated CCLP Partnership Agreement, with the conversion price (the "Conversion Price") determined by the trading prices of the common units over the prior month, among other factors, and as otherwise impacted by the existence of certain conditions related to the CCLP common units. Based on the number of CCLP Preferred Units outstanding as of March 31, 2018 , the maximum aggregate number of CCLP common units that could be required to be issued pursuant to the conversion provisions of the CCLP Preferred Units is approximately 30.0 million CCLP common units; however, CCLP may, at its option, pay cash, or a combination of cash and common units, to the CCLP Preferred Unitholders instead of issuing common units on any Conversion Date, subject to certain restrictions as described in the Second Amended and Restated CCLP Partnership Agreement. The total number of CCLP Preferred Units outstanding as of March 31, 2018 was 5,241,563 , of which we held 658,281 . Because the CCLP Preferred Units may be settled using a variable number of CCLP common units, the fair value of the CCLP Preferred Units, net of the units we purchased, is classified as long-term liabilities on our consolidated balance sheet in accordance with ASC 480 "Distinguishing Liabilities and Equity." The fair value of the CCLP Preferred Units as of March 31, 2018 was $54.2 million . Changes in the fair value during each quarterly period, including the $1.4 million and $1.6 million net increase s in fair value during the three month period ended March 31, 2018 and 2017, respectively, are charged or credited to earnings in the accompanying consolidated statements of operations. Based on the conversion provisions of the CCLP Preferred Units, and using the Conversion Price calculated as of March 31, 2018 , the theoretical number of CCLP common units that would be issued if all of the outstanding CCLP Preferred Units were converted on March 31, 2018 on the same basis as the monthly conversions would be approximately 8.6 million CCLP common units, with an aggregate market value of $62.6 million . A $1 decrease in the Conversion Price would result in the issuance of 1.4 million additional CCLP common units pursuant to these conversion provisions.

Market Risks and Derivative Hed

Market Risks and Derivative Hedge Contracts	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Hedge Contracts	MARKET RISKS AND DERIVATIVE CONTRACTS We are exposed to financial and market risks that affect our businesses. We have concentrations of credit risk as a result of trade receivables owed to us by companies in the energy industry. We have currency exchange rate risk exposure related to transactions denominated in foreign currencies as well as to investments in certain of our international operations. As a result of our variable rate bank credit facility, we face market risk exposure related to changes in applicable interest rates. Our financial risk management activities may at times involve, among other measures, the use of derivative financial instruments, such as swap and collar agreements, to hedge the impact of market price risk exposures. Derivative Contracts Foreign Currency Derivative Contracts . We and CCLP each enter into 30-day foreign currency forward derivative contracts with third parties as part of a program designed to mitigate the currency exchange rate risk exposure on selected transactions of certain foreign subsidiaries. As of March 31, 2018 , we and CCLP had the following foreign currency derivative contracts outstanding relating to portions of our foreign operations: Derivative Contracts US Dollar Notional Amount Traded Exchange Rate Settlement Date (In Thousands) Forward sale Euro $ 1,117 1.24 4/18/2018 Forward purchase pounds sterling 5,624 1.41 4/18/2018 Forward sale Canadian dollar 5,925 1.30 4/18/2018 Forward purchase Mexican peso 1,653 18.76 4/18/2018 Forward sale Norwegian krone 3,782 7.75 4/18/2018 Forward sale Mexican peso 6,760 18.79 4/18/2018 Under this program, we and CCLP may enter into similar derivative contracts from time to time. Although contracts pursuant to this program will serve as an economic hedge of the cash flow of our currency exchange risk exposure, they are not formally designated as hedge contracts or qualify for hedge accounting treatment. Accordingly, any change in the fair value of these derivative instruments during a period will be included in the determination of earnings for that period. The fair values of foreign currency derivative instruments are based on quoted market values as reported to us by our counterparty (a level 2 fair value measurement). The fair values of our and CCLP's foreign currency derivative instruments as of March 31, 2018 and December 31, 2017 , are as follows: Foreign currency derivative instruments Balance Sheet Location Fair Value at March 31, 201 8 Fair Value at December 31, 2017 (In Thousands) Forward purchase contracts Current assets $ 48 $ 111 Forward sale contracts Current assets 56 130 Forward sale contracts Current liabilities (259 ) (255 ) Forward purchase contracts Current liabilities (6 ) (113 ) Net asset (liability) $ (161 ) $ (127 ) None of the foreign currency derivative contracts contain credit risk related contingent features that would require us to post assets or collateral for contracts that are classified as liabilities. During the three month periods ended March 31, 2018 and March 31, 2017 , we recognized $28,000 and $0.7 million of net gains (losses), respectively, reflected in other (income) expense, net, associated with our foreign currency derivative program.

Equity

Equity	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Equity	EQUITY Changes in equity for the three month periods ended March 31, 2018 and 2017 are as follows: Three Months Ended March 31, 2018 2017 TETRA Non- Total TETRA Non- Total (In Thousands) Beginning balance for the period $ 208,080 $ 144,481 $ 352,561 $ 233,523 $ 166,943 $ 400,466 Net income (loss) (53,648 ) (9,115 ) (62,763 ) (2,463 ) (8,789 ) (11,252 ) Foreign currency translation adjustment 1,668 (385 ) 1,283 2,052 141 2,193 Comprehensive Income (loss) (51,980 ) (9,500 ) (61,480 ) (411 ) (8,648 ) (9,059 ) Issuance of common stock, net 28,115 — 28,115 (11 ) — (11 ) Conversions of CCLP Series A Preferred — 10,103 10,103 — 2,388 2,388 Distributions to public unitholders — (4,358 ) (4,358 ) — (7,248 ) (7,248 ) Equity-based compensation 1,434 (655 ) 779 1,513 956 2,469 Treasury stock and other (224 ) (35 ) (259 ) (36 ) (42 ) (78 ) Ending balance as of March 31 $ 185,425 $ 140,036 $ 325,461 $ 234,578 $ 154,349 $ 388,927 Activity within the foreign currency translation adjustment account during the periods includes no reclassifications to net income (loss).

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2018
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. On March 18, 2011, we filed a lawsuit in the Circuit Court of Union County, Arkansas, asserting claims of professional negligence, breach of contract and other claims against the engineering firm we hired for engineering design, equipment, procurement, advisory, testing and startup services for our El Dorado, Arkansas chemical production facility. The engineering firm disputed our claims and promptly filed a motion to compel the matter to arbitration. After a lengthy procedural dispute in Arkansas state court, arbitration proceedings were initiated on November 15, 2013. Ultimately, on December 16, 2016, the arbitration panel ruled in our favor, declared us as the prevailing party, and awarded us a total net amount of $12.8 million . We received full payment of the $12.8 million final award on January 5, 2017, and this amount was credited to earnings in the accompanying consolidated statement of operations for the three months ended March 31, 2017 . Other Contingencies During 2011, in connection with the sale of a significant majority of Maritech's oil and gas producing properties, the buyers of the properties assumed the associated decommissioning liabilities pursuant to the purchase and sale agreements. In March 2018, we closed the Maritech Asset Purchase Agreement with Orinoco that provided for the purchase by Orinoco of the Maritech Properties. Also in March 2018, we finalized the Maritech Equity Purchase Agreement with Orinoco, that provided for the purchase by Orinoco of the Maritech Equity Interests. As a result of these transactions, we have effectively exited the businesses of our Offshore Services and Maritech segments and Orinoco has assumed all of Maritech's remaining abandonment and decommissioning obligations.

Industry Segments

Industry Segments	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Industry Segments	NDUSTRY SEGMENTS Following the transactions closed during the three month period ended March 31, 2018 , we reorganized our reporting segments and now manage our operations through three Divisions: Completion Fluids & Products, Water & Flowback Services, and Compression . Our Completion Fluids & Products Division was previously reported as our Fluids Division, and included our water management services operations. Following the acquisition of SwiftWater in February 2018, our expanded water management operations are now included with our production testing operations as part of our Water & Flowback Services Division. The operations of our previous Offshore Division, consisting of our previous Offshore Services and Maritech, are now reported as discontinued operations following their disposal in March 2018. Our Completion Fluids & Products Division manufactures and markets clear brine fluids, additives, and associated products and services to the oil and gas industry for use in well drilling, completion, and workover operations in the United States and in certain countries in Latin America, Europe, Asia, the Middle East, and Africa. The division also markets liquid and dry calcium chloride products manufactured at its production facilities or purchased from third-party suppliers to a variety of markets outside the energy industry. Our Water & Flowback Services Division provides domestic onshore oil and gas operators with comprehensive water management services. The division also provides frac flowback, production well testing, offshore rig cooling, and other associated services in many of the major oil and gas producing regions in the United States, Mexico, and Canada, as well as in basins in certain regions in South America, Africa, Europe, the Middle East, and Australia. The Compression Division is a provider of compression services and equipment for natural gas and oil production, gathering, transportation, processing, and storage. The Compression Division 's equipment sales business includes the fabrication and sale of standard compressor packages, custom-designed compressor packages, and oilfield pump systems designed and fabricated at the division's facilities. The Compression Division 's aftermarket services business provides compressor package reconfiguration and maintenance services as well as providing compressor package parts and components manufactured by third-party suppliers. The Compression Division provides its services and equipment to a broad base of natural gas and oil exploration and production, midstream, transmission, and storage companies operating throughout many of the onshore producing regions of the United States as well as in a number of foreign countries, including Mexico, Canada, and Argentina. We generally evaluate the performance of and allocate resources to our segments based on profit or loss from their operations before income taxes and nonrecurring charges, return on investment, and other criteria. Transfers between segments and geographic areas are priced at the estimated fair value of the products or services as negotiated between the operating units. “Corporate overhead” includes corporate general and administrative expenses, corporate depreciation and amortization, interest income and expense, and other income and expense. Summarized financial information concerning the business segments is as follows: Three Months Ended 2018 2017 (In Thousands) Revenues from external customers Product sales Completion Fluids & Products Division $ 51,057 $ 52,211 Water & Flowback Services Division 1,250 6,113 Compression Division 23,646 9,654 Consolidated $ 75,953 $ 67,978 Services Completion Fluids & Products Division $ 2,049 $ 4,016 Water & Flowback Services Division 59,603 31,510 Compression Division 61,776 55,905 Consolidated $ 123,428 $ 91,431 Interdivision revenues Completion Fluids & Products Division $ (2 ) $ 1 Water & Flowback Services Division 222 556 Compression Division — — Interdivision eliminations (220 ) (557 ) Consolidated $ — $ — Total revenues Completion Fluids & Products Division $ 53,104 $ 56,228 Water & Flowback Services Division 61,075 38,179 Compression Division 85,422 65,559 Interdivision eliminations (220 ) (557 ) Consolidated $ 199,381 $ 159,409 Income (loss) before taxes Completion Fluids & Products Division $ 2,449 $ 19,473 Water & Flowback Services Division 6,548 (1,265 ) Compression Division (14,018 ) (14,333 ) Interdivision eliminations — (167 ) Corporate Overhead (1) (14,912 ) (7,872 ) Consolidated $ (19,933 ) $ (4,164 ) March 31, 2018 December 31, 2017 (In Thousands) Total assets Completion Fluids & Products Division $ 303,157 $ 293,507 Water & Flowback Services Division 224,570 139,771 Compression Division 895,979 784,745 Corporate Overhead and eliminations (23,351 ) (30,501 ) Assets of discontinued operations 7,907 121,092 Consolidated $ 1,408,262 $ 1,308,614 (1) Amounts reflected include the following general corporate expenses: Three Months Ended 2018 2017 (In Thousands) General and administrative expense $ 12,598 $ 9,555 Depreciation and amortization 151 91 Interest expense 4,007 3,774 Warrants fair value adjustment (1,994 ) (5,976 ) Other general corporate (income) expense, net 150 428 Total $ 14,912 $ 7,872

Revenue from Contracts with Cus

Revenue from Contracts with Customers (Notes)	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUE FROM CONTRACTS WITH CUSTOMERS Performance Obligations. Revenue is recognized when performance obligations under the terms of a contract with our customer are satisfied. Generally this occurs with the transfer of control of our products or services to our customers. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring products or providing services to our customers. For a general discussion of the nature of the goods and services that we provide, see Note I - Industry Segments. Product Sales. Product sales revenues are recognized at a point in time when we transfer control of our product offerings to our customers, generally when we ship products from our facility to our customer. The product sales for our Completion Fluid & Products Division consist primarily of clear brine fluids, additives, and associated manufactured products. Product sales for our Water & Flowback Services Division are typically attributed to specific performance obligations within certain production testing service arrangements. Parts and equipment sales comprise the product sales for the Compression Division. Services . Service revenues represent revenue recognized over time, as our customer arrangements typically provide agreed upon day-rates (monthly service rates for compression services) and we recognize service revenue based upon the number of days services have been performed. Service revenue recognized over time is associated with a majority of our Water & Flowback Services Division arrangements, compression service and aftermarket service contracts within our Compression Division, and a small portion of Completion Fluids & Products Division revenue that is associated with completion fluid service arrangements. With the exception of the initial terms of the compression services contracts for medium- and high-horsepower compressor packages of our Compression Division, our customer contracts are generally for terms of one year or less. The majority of the service arrangements in the Water & Flowback Services Division are for a period of 90 days or less. Within our Compression Division service revenue, most aftermarket service revenues are recognized at a point in time when we transfer control of our products and complete the delivery of services to our customers. We receive cash equal to the invoice price for most product sales and services and payment terms typically range from 30 to 60 days from the date we invoice our customer. Since the period between when we deliver products or services and when the customer pays for products or services are not expected to exceed one year, we have elected not to calculate or disclose a financing component for our customer contracts. Depending on the terms of the arrangement, we may also defer the recognition of revenue for a portion of the consideration received because we have to satisfy a future performance obligation. For example, consideration received from customers during the fabrication of new compressor packages is typically deferred until control of the compressor package is transferred to our customer. For any arrangements with multiple performance obligations, we use management's estimated selling price to determine the stand-alone selling price for separate performance obligations. For revenue associated with mobilization of service equipment as part of a service contract arrangement, such revenue, if significant, is deferred and amortized over the estimated service period. As of March 31, 2018, we had $6.6 million of remaining performance obligations related to our compression service contracts. As a practical expedient, this amount does not reflect revenue for compression service contracts whose original expected duration is less than 12 months an d does not consider the effects of the time value of money . The remaining performance obligations are expected to be recognized through 2022 as follows (in thousands): 2018 2019 2020 2021 2022 Total (In Thousands) Compression service contracts remaining performance obligations $ 1,732 $ 1,929 $ 1,740 $ 702 $ 546 $ 6,649 Sales taxes, value added taxes, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. We have elected to recognize the cost for freight and shipping costs as part of cost of product sales when control over our products (i.e. delivery) has transferred to the customer. Use of Estimates. C ontracts where the amount of revenue that will ultimately be realized is subject to uncertainties not fully known as of the time revenue is recognized are known as variable consideration arrangements. In recognizing revenue for these arrangements, the amount of variable consideration recognized is limited so that it is probable that significant amounts of revenues will not be reversed in future periods when the uncertainty is resolved. For products returned by the customer, we estimate the expected returns based on an analysis of historical experience. For volume discounts earned by the customer, we estimate the discount (if any) based on our estimate of the total expected volume of products sold or services to be provided to the customer during the discount period. In certain contracts for the sale of clear brine fluids, we may agree to issue credits for the repurchase of reclaimable used fluids from certain customers at an agreed price that is based on the condition of the fluids. For sales of clear brine fluids, we adjust the revenue recognized in the period of shipment by the estimated amount of the credit expected to be issued to the customer, and this estimate is based on historical experience. As of March 31, 2018 and December 31, 2017, the amount of remaining credits expected to be issued for the repurchase of reclaimable used fluids was $0.6 million and $2.8 million , respectively, that were recorded in inventory (right of return asset) and accounts payable. For the three month period ended March 31, 2018 , there were no material differences between amounts recognized compared to estimates made in a prior period from these variable consideration arrangements. Contract Assets and Liabilities. Contract assets arise when we transfer products or perform services in fulfillment of a contract obligation but must perform other performance obligations before being entitled to payment. Generally, once we have transferred products or performed services for the customer pursuant to a contract, we recognize revenue and trade accounts receivable, as we are entitled to payment that is unconditional. Any contract assets, along with billed and unbilled accounts receivable, are included in Trade Accounts Receivable in our consolidated balance sheets. Contract liabilities arise when we receive consideration, or consideration is unconditionally due, from a customer prior to transferring products or services to the customer under the terms of a sales contract. We classify contract liabilities as Deferred Revenue in our consolidated balance sheets. Such deferred revenue typically results from advance payments received on sales of compressor equipment prior to when it is completed and transferred to the customer in accordance with the customer contract. As of March 31, 2018 and December 31, 2017, contract assets were immaterial. The following table reflects the changes in our contract liabilities during the three month period ended March 31, 2018 : March 31, 2018 December 31, 2017 Increase (Decrease) (In Thousands) Contract liabilities Deferred revenue $ 35,929 $ 17,050 $ 18,879 Bad debt expense on accounts receivables and contract assets was $0.2 million and $0.6 million du ring the three month periods ended March 31, 2018 and 2017, respectively. During the three months ended March 31, 2018 , contract liabilities increased due to deferred revenue for consideration received on new compressor equipment being fabricated. During the three months ended March 31, 2018 , $17.8 million of deferred revenue as of December 31, 2017 was recognized as product sales revenue, primarily associated w ith deliveries of compression equipment. Contract Costs. When costs are incurred to obtain contracts, such as professional fees and sales bonuses, such costs are deferred and amortized over the expected period of benefit. Costs of mobilizing service equipment necessary to perform under service contracts, if significant, are deferred and amortized over the estimated service period, which is generally a few weeks. As of March 31, 2018 , such contract costs were immaterial. Where applicable, we establish provisions for estimated obligations pursuant to product warranties by accruing for estimated future product warranty cost in the period of the product sale. Such estimates are based on historical warranty loss experience. Major components of fabricated compressor packages have manufacturer warranties that we pass through to the customer. Disaggregation of Revenue. We disaggregate revenue from contracts with customers into Product Sales and Services within each segment, as noted in our three reportable segments in Note I . In addition, we disaggregate revenue from contracts with customers by geography based on the following table below. March 31, 2018 March 31, 2017 (In Thousands) Completion Fluids & Products U.S. 27,909 40,802 International 25,195 15,426 53,104 56,228 Water & Flowback Services U.S. 47,038 24,140 International 14,037 14,039 61,075 38,179 Compression U.S. 76,980 57,968 International 8,442 7,591 85,422 65,559 Interdivision eliminations U.S. 2 (1 ) International (222 ) (556 ) (220 ) (557 ) Total Revenue U.S. 151,929 122,909 International 47,452 36,500 199,381 159,409

Basis of Presentation and Sig16

Basis of Presentation and Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Principles of consolidation policy	Our consolidated financial statements include the accounts of our wholly owned subsidiaries. All intercompany accounts 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 March 31, 2018 are not necessarily indicative of results that may be expected for the twelve months ended December 31, 2018 . We consolidate the financial statements of CSI Compressco LP and its subsidiaries ("CCLP") as part of our Compression Division, as we determined that CCLP is a variable interest entity and we are the primary beneficiary. We control the financial interests of CCLP and have the ability to direct the activities of CCLP that most significantly impact its economic performance through our ownership of its general partner. The share of CCLP net assets and earnings that is not owned by us is presented as noncontrolling interest in our consolidated financial statements. Our cash flows from our investment in CCLP are limited to the quarterly distributions we receive on our CCLP common units and general partner interest (including incentive distribution rights) and the amounts collected for services we perform on behalf of CCLP, as TETRA's capital structure and CCLP's capital structure are separate, and do not include cross default provisions, cross collateralization provisions, or cross guarantees. 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 Securities and Exchange Commission ("SEC") and do not include all information and footnotes required by generally accepted accounting principles for complete financial statements. These financial statements should be read in connection with the financial statements for the year ended December 31, 2017 , and notes thereto included in our Annual Report on Form 10-K, which we filed with the SEC on March 5, 2018 .
Reclassifications policy
Use of estimates policy	Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("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.
Reclassification, Policy [Policy Text Block]	Reclassifications Certain previously reported financial information has been reclassified to conform to the current period’s presentation.
Cash and cash equivalents policy	Cash Equivalents We consider all highly liquid cash investments with a maturity of three months or less when purchased to be cash equivalents.
Restricted cash policy	Restricted Cash Restricted cash is classified as a current asset when it is expected to be repaid or settled in the next twelve month period.
Inventories policy	Inventories Inventories are stated at the lower of cost or net realizable value. Except for work in progress inventory discussed below, cost is determined using the weighted average method. Components of inventories as of March 31, 2018 and December 31, 2017 are as follows: March 31, 2018 December 31, 2017 (In Thousands) Finished goods $ 67,283 $ 66,377 Raw materials 3,692 4,027 Parts and supplies 36,584 33,632 Work in progress 20,366 11,402 Total inventories $ 127,925 $ 115,438 Finished goods inventories include newly manufactured clear brine fluids as well as used brines that are repurchased from certain customers for recycling. Recycled brines are recorded at cost, using the weighted average method. Work in progress inventory consists primarily of new compressor packages located in the CCLP fabrication facility in Midland, Texas. The cost of work in progress is determined using the specific identification method. We write down the value of inventory by an amount equal to the difference between its cost and its estimated net realizable value.
Weighted Average Shares Outstanding Table	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 2018 2017 (In Thousands) Number of weighted average common shares outstanding 117,598 114,197 Assumed exercise of equity awards and warrants — 107 Average diluted shares outstanding 117,598 114,304
Foreign currency translation policy	Foreign Currency Translation We have designated the euro, the British pound, the Norwegian krone, the Canadian dollar, the Brazilian real, the Argentine peso, and the Mexican peso, respectively, as the functional currency for our operations in Finland and Sweden, the United Kingdom, Norway, Canada, Brazil, Argentina, and certain of our operations in Mexico. The U.S. dollar is the designated functional currency for all of our other foreign operations. The cumulative translation effects of translating the applicable accounts from the functional currencies into the U.S. 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 $0.9 million and $(0.6) million during the three month periods ended March 31, 2018 and March 31, 2017 , respectively.
Income taxes policy	Income Taxes Our consolidated provision for income taxes during the first three months of 2017 and 2018 is primarily attributable to taxes in certain foreign jurisdictions and Texas gross margin taxes. Our consolidated effective tax rate for the three month period ended March 31, 2018 of negative 5.6% was primarily the result of losses generated in entities for which no related tax benefit has been recorded. The losses generated by these entities do not result in tax benefits due to offsetting valuation allowances being recorded against the related net deferred tax assets. We establish a valuation allowance to reduce the deferred tax assets when it is more likely than not that some portion or all of the deferred tax assets will not be realized. Included in our deferred tax assets are net operating loss carryforwards and tax credits that are available to offset future income tax liabilities in the U.S. as well as in certain foreign jurisdictions. The Tax Cuts and Jobs Act (the “Act”) was enacted on December 22, 2017. At March 31, 2018 and December 31, 2017, we had not completed our accounting for the tax effects of enactment of the Act; however, in certain cases, as described below, we made reasonable estimates of the effects and recorded provisional amounts. We will continue to make and refine our calculations as additional analysis is completed. We recognized an income tax expense of $54.1 million in the fourth quarter of 2017 associated with the impact of the Act in our 2017 filing. This income tax expense was fully offset by a decrease in the valuation allowance previously recorded on our net deferred tax assets. As such, the Act resulted in no net tax expense in the fourth quarter of 2017. We have considered in our estimated annual effective tax rate for 2018, the impact of the statutory changes enacted by the Act, including reasonable estimates of those provisions effective for the 2018 tax year. Our provisional estimate on Global Intangible Low Taxed Income (“GILTI”), Foreign Derived Intangible Income (“FDII”), Base Erosion and Anti-Abuse Tax (“BEAT”), and IRC Section 163(j) interest limitation do not impact our effective tax rate for the three months ended March 31, 2018. The accounting for the tax effects of the Act will be completed in 2018 as provided by the U.S. Securities and Exchange Commission’s SAB No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act. Asset Retirement Obligations We operate facilities in various U.S. and foreign locations that are used in the manufacture, storage, and sale of our products, inventories, and equipment. These facilities are a combination of owned and leased assets. The values of our asset retirement obligations for these properties were $11.9 million and $11.7 million as of March 31, 2018 and December 31, 2017 , respectively. We are required to take certain actions in connection with the retirement of these assets. Asset retirement obligations are recorded in accordance with FASB ASC 410, "Asset Retirement and Environmental Obligations," whereby the estimated fair value of a liability for asset retirement obligations is recognized in the period in which it is incurred and in which a reasonable estimate can be made. Such estimates are based on relevant assumptions that we believe are reasonable. We have reviewed our obligations in this regard in detail and estimated the cost of these actions. The associated asset retirement costs are capitalized as part of the carrying amount of these long-lived assets and are depreciated on a straight-line basis over the life of the assets. The changes in the values of our asset retirement obligations during the three month period ended March 31, 2018 , are as follows: Three Months Ended March 31, 2018 (In Thousands) Beginning balance for the period, as reported $ 11,738 Activity in the period: Accretion of liability 159 Revisions in estimated cash flows 32 Ending balance $ 11,929 We review the adequacy of our asset retirement obligation liabilities whenever indicators suggest that the estimated cash flows underlying the liabilities have changed.
Fair value measurements policy	Fair Value Measurements Fair value is defined 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” within an entity’s principal market, if any. The principal market is the market in which the reporting entity would sell the asset or transfer the liability with the greatest volume and level of activity, regardless of whether it is the market in which the entity will ultimately transact for a particular asset or liability or if a different market is potentially more advantageous. Accordingly, this exit price concept may result in a fair value that may differ from the transaction price or market price of the asset or liability. Under U.S. generally accepted accounting principles ("GAAP"), the fair value hierarchy prioritizes inputs to valuation techniques used to measure fair value. Fair value measurements should maximize the use of observable inputs and minimize the use of unobservable inputs, where possible. Observable inputs are developed based on market data obtained from sources independent of the reporting entity. Unobservable inputs may be needed to measure fair value in situations where there is little or no market activity for the asset or liability at the measurement date and are developed based on the best information available in the circumstances, which could include the reporting entity’s own judgments about the assumptions market participants would utilize in pricing the asset or liability. 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 value of the liability for the warrants to purchase 11.2 million shares of our common stock (the "Warrants") and CCLP Preferred Units (as herein defined). We also utilize fair value measurements on a recurring basis in the accounting for our foreign currency derivative contracts. For these fair value measurements, we utilize the quoted value as determined by our counterparty financial institution (a level 2 fair value measurement). Fair value measurements are also utilized on a nonrecurring basis, such as in the allocation of purchase consideration for acquisition transactions to the assets and liabilities acquired, including intangible assets and goodwill (a level 3 fair value measurement), the initial recording of our asset retirement obligations, and for the impairment of long-lived assets, including goodwill (a level 3 fair value measurement). The fair value of certain of our financial instruments, which include cash, restricted cash, accounts receivable, accounts payable, short-term borrowings, and long-term debt pursuant to our bank credit agreement, approximate their carrying amounts. The aggregate fair values of our long-term 11% Senior Note at March 31, 2018 and December 31, 2017 , were approximately $128.5 million and $130.8 million , respectively, based on current interest rates on those dates, which were different from the stated interest rate on the 11% Senior Note. Those fair values compare to face amounts of the 11% Senior Note of $125.0 million both at March 31, 2018 and December 31, 2017 . The fair values of the publicly traded CCLP 7.25% Senior Notes (as herein defined) at March 31, 2018 and December 31, 2017 , were approximately $277.4 million and $279.7 million , respectively. Those fair values compare to a face amount of $ 295.9 million both at March 31, 2018 and December 31, 2017 . The fair value of the publicly traded CCLP 7.50% Senior Secured Notes at March 31, 2018 was approximately $353.5 million . This fair value compares to aggregate principal amount of such notes at March 31, 2018 of $350.0 million . We calculated the fair values of our 11% Senior Note as of March 31, 2018 and December 31, 2017 internally, using current market conditions and average cost of debt (a level 2 fair value measurement). We based the fair values of the CCLP 7.25% Senior Notes and the CCLP 7.50% Senior Secured Notes as of March 31, 2018 on recent trades for these notes (a level 1 fair value measurement). See Note D - Long-Term Debt and Other Borrowings, for further discussion. The CCLP Preferred Units are valued using a lattice modeling technique that, among a number of lattice structures, includes significant unobservable items (a Level 3 fair value measurement). These unobservable items include (i) the volatility of the trading price of CCLP's common units compared to a volatility analysis of equity prices of CCLP's comparable peer companies, (ii) a yield analysis that utilizes market information related to the debt yields of comparable peer companies, and (iii) a future conversion price analysis. The fair valuation of the CCLP Preferred Units liability is increased by, among other factors, projected increases in CCLP's common unit price and by increases in the volatility and decreases in the debt yields of CCLP's comparable peer companies. Increases (or decreases) in the fair value of CCLP Preferred Units will increase (decrease) the associated liability and result in future adjustments to earnings for the associated valuation losses (gains). During the three months ended March 31, 2018 , the fair value of the CCLP Preferred Units increased by $1.4 million , which was charged to earnings in the consolidated statement of operations. The Warrants are valued either by using their traded market prices (a level 1 fair value measurement) or, for periods when market prices are not available, by using the Black Scholes option valuation model that includes estimates of the volatility of the Warrants implied by their trading prices (a level 3 fair value measurement). As of March 31, 2018 and December 31, 2017 , the fair valuation methodology utilized for the Warrants was a level 3 fair value measurement, as there were no available traded market prices to value the Warrants. The fair valuation of the Warrants liability is increased by, among other factors, increases in our common stock price, and by increases in the volatility of our common stock price. Increases (or decreases) in the fair value of the Warrants will increase (decrease) the associated liability and result in future adjustments to earnings for the associated valuation losses (gains). During the three months ended March 31, 2018 , the fair value of the Warrants liability decreased by $2.0 million , which was credited to earnings in the consolidated statement of operations. During the third quarter of 2017 and the first quarter of 2018, we issued stand-alone, cash-settled stock appreciation rights awards to an executive officer. These awards are valued by using the Black Scholes option valuation model and such fair value is recognized based on the portion of the requisite service period satisfied as of each valuation date. The fair valuation of the stock appreciation rights liability is increased by, among other factors, increases in our common stock price, and by increases in the volatility of our common stock price. This stock appreciation rights awards are reflected as an accrued liability in our consolidated balance sheet. Increases (or decreases) in the fair value of the stock appreciation rights awards will increase (decrease) the associated liability and result in future adjustments to earnings for the associated valuation losses (gains). A summary of these fair value measurements as of March 31, 2018 and December 31, 2017 , is 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 March 31, 2018 (Level 1) (Level 2) (Level 3) (In Thousands) CCLP Series A Preferred Units $ (54,214 ) $ — $ — $ (54,214 ) Warrants liability (11,207 ) — — (11,207 ) Cash-settled stock appreciation rights (142 ) — — (142 ) Asset for foreign currency derivative contracts 104 — 104 — Liability for foreign currency derivative contracts (264 ) — (264 ) — Net liability $ (65,723 ) 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, 2017 (Level 1) (Level 2) (Level 3) (In Thousands) CCLP Series A Preferred Units $ (61,436 ) $ — $ — $ (61,436 ) Warrants liability (13,202 ) — — (13,202 ) Cash-settled stock appreciation rights (97 ) — — (97 ) Asset for foreign currency derivative contracts 241 — 241 — Liability for foreign currency derivative contracts (378 ) — (378 ) — Net liability $ (74,872 )
New Accounting Pronouncements policy	New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers." This ASU supersedes the revenue recognition requirements in Accounting Standards Codification ("ASC") 605, "Revenue Recognition", and most industry-specific guidance. This ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those years, under either full or modified retrospective adoption. In March 2016, the FASB issued ASU 2016-08, "Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)" to clarify the guidance on principal versus agent considerations. This ASU does not change the effective date or adoption method under ASU 2014-09 which is noted above. In April 2016, the FASB issued ASU 2016-10, "Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing" to clarify the guidance on identifying performance obligations and the licensing implementation guidance. This ASU does not change the effective date or adoption method under ASU 2014-09, which is noted above. Additionally, in May 2016, the FASB issued ASU 2016-12, "Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients." This ASU addresses and amends several aspects of ASU 2014-09, but does not change the core principle of the guidance. This ASU does not change the effective date or adoption method under ASU 2014-09 which is noted above. On January 1, 2018, we adopted ASU 2014-09 and all related amendments ("ASU 2014-09"). We utilized the modified retrospective method of adoption. Comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also provides a five-step model for determining revenue recognition for arrangements that are within the scope of the standard: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. We only apply the five-step model to contracts when it is probable that we will collect the consideration we are entitled to in exchange for the goods or services we transfer to the customer. At contract inception, once the contract is determined to be within the scope of ASU 2014-09, we assess the goods or services promised within each contract and determine those that are performance obligations and assess whether each promised good or service is distinct. We then recognize as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. For a complete discussion of accounting for revenues, see Note J - Revenue from Contracts with Customers. The impact from the adoption of ASU 2014-09 to our January 1, 2018 consolidated balance sheet, our March 31, 2018 consolidated balance sheet, and our consolidated results of operations for the three months ended March 31, 2018 was immaterial. The adoption of ASU 2014-09 had no impact to cash provided by operating, financing, or investing activities in our consolidated statement of cash flows. We do not expect the adoption of the new revenue standard to have a material impact to our net income on an ongoing basis. In February 2016, the FASB issued ASU 2016-02, "Leases" (Topic 842) to increase comparability and transparency among different organizations. Organizations are required to recognize lease assets and lease liabilities on the balance sheet and disclose key information about the leasing arrangements and cash flows. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods, under a modified retrospective adoption with early adoption permitted. We are currently assessing the potential effects of these changes to our consolidated financial statements. 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 more timely recognition of losses. ASU 2016-13, which has an effective date of the first quarter of fiscal 2022, also applies to employee benefit plan accounting. We are currently assessing the potential effects of these changes to our consolidated financial statements and employee benefit plan accounting. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments" to reduce diversity in practice in classification of certain transactions in the statement of cash flows. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption permitted, under a retrospective transition adoption. We adopted this ASU during the three month period ended March 31, 2018, with no material impact to our consolidated financial statements. In November 2016, the FASB issued ASU 2016-16, "Intra-Entity Transfers of Assets Other Than Inventory" which requires companies to account for the income tax effects of intercompany transfers of assets other than inventory when the transfer occurs. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption permitted, under a modified retrospective transition adoption. We adopted this ASU during the three month period ended March 31, 2018. The adoption of this standard did not have a material impact to our consolidated financial statements due to a previously recorded valuation allowance on our net deferred tax assets. Additionally, in November 2016, the FASB issued ASU 2016-18, "Statement of Cash Flows (Topic 230): Restricted Cash" to reduce diversity in the presentation of restricted cash and restricted cash equivalents in the statement of cash flows. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption permitted, under a retrospective transition adoption. We adopted this ASU during the three month period ended March 31, 2018, resulting in restricted cash being classified with cash and cash equivalents in our consolidated statement of cash flows. In January 2017, the FASB issued ASU 2017-04, "Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" which simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. The ASU is effective for annual periods beginning after December 15, 2020, and interim periods within those annual periods, with early adoption permitted, under a prospective adoption. We do not expect the adoption of this standard to have a material impact on our consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, "Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting" to clarify when to account for a change to the terms or conditions of a share-based payment award as a modification. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption permitted. We adopted this ASU during the three month period ended March 31, 2018, with no material impact to our consolidated financial statements. In July 2017, the FASB issued ASU 2017-11, "Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception" to consider “down round” features when determining whether certain equity-linked financial instruments or embedded features are indexed to an entity’s own stock. Entities that present EPS under ASC 260 will recognize the effect of a down round feature in a freestanding equity-classified financial instrument only when it is triggered. The effect of triggering such a feature will be recognized as a dividend and a reduction to income available to common shareholders in basic EPS. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. We are currently assessing the potential effects of these changes to our consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities" to change how companies account for and disclose hedges. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. We are currently assessing the potential effects of these changes to our consolidated financial statements.

Basis of Presentation and Sig17

Basis of Presentation and Significant Accounting Policies (Tables) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Accounting Policies [Abstract]
Inventories Table	March 31, 2018 December 31, 2017 (In Thousands) Finished goods $ 67,283 $ 66,377 Raw materials 3,692 4,027 Parts and supplies 36,584 33,632 Work in progress 20,366 11,402 Total inventories $ 127,925 $ 115,438
Inventories Detail [Table]
Finished goods	$ 67,283		$ 66,377
Raw materials	3,692		4,027
Parts and supplies	36,584		33,632
Work in progress	20,366		11,402
Inventories	$ 127,925		115,438
Net income per share policy	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 2018 2017 (In Thousands) Number of weighted average common shares outstanding 117,598 114,197 Assumed exercise of equity awards and warrants — 107 Average diluted shares outstanding 117,598 114,304 For the three month period ended March 31, 2018 , the average diluted shares outstanding excludes the impact of all outstanding equity awards and warrants, as the inclusion of these shares would have been anti-dilutive due to the net losses recorded during the periods.
Weighted Average Shares Outstanding [Table]
Number of weighted average common shares outstanding	117,598	114,197
Assumed exercise of stock options	0	107
Average diluted shares outstanding	117,598	114,304
Fair Value Measurements on a Recurring Basis Table	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 March 31, 2018 (Level 1) (Level 2) (Level 3) (In Thousands) CCLP Series A Preferred Units $ (54,214 ) $ — $ — $ (54,214 ) Warrants liability (11,207 ) — — (11,207 ) Cash-settled stock appreciation rights (142 ) — — (142 ) Asset for foreign currency derivative contracts 104 — 104 — Liability for foreign currency derivative contracts (264 ) — (264 ) — Net liability $ (65,723 ) 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, 2017 (Level 1) (Level 2) (Level 3) (In Thousands) CCLP Series A Preferred Units $ (61,436 ) $ — $ — $ (61,436 ) Warrants liability (13,202 ) — — (13,202 ) Cash-settled stock appreciation rights (97 ) — — (97 ) Asset for foreign currency derivative contracts 241 — 241 — Liability for foreign currency derivative contracts (378 ) — (378 ) — Net liability $ (74,872 )
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Settled Stock Appreciation Rights SARS	$ (142)		(97)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value Disclosure, Recurring	0		0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value Disclosure, Recurring	0		0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value Disclosure, Recurring	(54,214)		(61,436)
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value Disclosure, Recurring	(54,214)		(61,436)
Warranty, Fair Value Disclosure, Recurring	(11,207)		13,202
Asset for foreign currency derivative contracts	104		241
Liability for foreign currency derivative contracts	(264)		(378)
Total	(65,723)		(74,872)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warranty, Fair Value Disclosure, Recurring	0		0
Cash Settled Stock Appreciation Rights SARS	0		0
Asset for foreign currency derivative contracts	0		0
Liability for foreign currency derivative contracts	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warranty, Fair Value Disclosure, Recurring	0		0
Cash Settled Stock Appreciation Rights SARS	0		0
Asset for foreign currency derivative contracts	104		241
Liability for foreign currency derivative contracts	(264)		(378)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warranty, Fair Value Disclosure, Recurring	(11,207)		13,202
Cash Settled Stock Appreciation Rights SARS	(142)		(97)
Asset for foreign currency derivative contracts	0		0
Liability for foreign currency derivative contracts	$ 0		$ 0

Long-Term Debt and Other Borr18

Long-Term Debt and Other Borrowings Long-Term Debt and Other Borrowings (TABLE) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term Debt	$ 823,565	$ 629,855
Long-term Debt, Current Maturities	0	0
Long-term Debt, Excluding Current Maturities	$ 823,565	629,855
Long-Term Debt Table	March 31, 2018 December 31, 2017 (In Thousands) TETRA Scheduled Maturity Bank revolving line of credit facility (presented net of the unamortized deferred financing costs of $1.3 million as of March 31, 2018) September 30, 2019 $ 73,143 $ — 11.0% Senior Note, Series 2015 (presented net of the unamortized discount of $3.7 million as of March 31, 2018 and $3.9 million as of December 31, 2017 and net of unamortized deferred financing costs of $3.3 million as of March 31, 2018 and $3.4 million as of December 31, 2017) November 5, 2022 118,008 117,679 TETRA total debt 191,151 117,679 Less current portion — — TETRA total long-term debt $ 191,151 $ 117,679 CCLP CCLP Bank Credit Facility (presented net of the unamortized deferred financing costs of $4.0 million as of December 31, 2017), terminated March 22, 2018 August 4, 2019 — 223,985 CCLP 7.25% Senior Notes (presented net of the unamortized discount of $2.7 million as of March 31, 2018 and $2.8 million as of December 31, 2017 and net of unamortized deferred financing costs of $4.7 million as of March 31, 2018 and $5.0 million as of December 31, 2017) August 15, 2022 288,588 288,191 CCLP 7.50% Senior Secured Notes (presented net of unamortized deferred financing costs of $6.2 million as of March 31, 2018) March 22, 2025 343,826 — CCLP total debt 632,414 512,176 Less current portion $ — $ — Consolidated total long-term debt $ 823,565 $ 629,855
CSI Compressco [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 632,414	512,176
CSI Compressco [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Aug. 4, 2019
Long-term Debt	$ 0	223,985
CSI Compressco [Member] | Compressco Partners Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Aug. 15, 2022
Long-term Debt	$ 288,588	288,191
CSI Compressco [Member] | Compressco Partners Senior Notes 7.50% [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Mar. 22, 2025
Long-term Debt	$ 343,826	$ 0

Market Risks and Derivative H19

Market Risks and Derivative Hedge Contracts Market Risks and Derivative Hedge Contracts (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions Table	Derivative Contracts US Dollar Notional Amount Traded Exchange Rate Settlement Date (In Thousands) Forward sale Euro $ 1,117 1.24 4/18/2018 Forward purchase pounds sterling 5,624 1.41 4/18/2018 Forward sale Canadian dollar 5,925 1.30 4/18/2018 Forward purchase Mexican peso 1,653 18.76 4/18/2018 Forward sale Norwegian krone 3,782 7.75 4/18/2018 Forward sale Mexican peso 6,760 18.79 4/18/2018
Derivatives Designated as Hedging Instruments Table	Foreign currency derivative instruments Balance Sheet Location Fair Value at March 31, 201 8 Fair Value at December 31, 2017 (In Thousands) Forward purchase contracts Current assets $ 48 $ 111 Forward sale contracts Current assets 56 130 Forward sale contracts Current liabilities (259 ) (255 ) Forward purchase contracts Current liabilities (6 ) (113 ) Net asset (liability) $ (161 ) $ (127 )

Equity (Tables)

Equity (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Changes in Equity Table

Industry Segments (Tables)

Industry Segments (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Reporting Table	Three Months Ended 2018 2017 (In Thousands) Revenues from external customers Product sales Completion Fluids & Products Division $ 51,057 $ 52,211 Water & Flowback Services Division 1,250 6,113 Compression Division 23,646 9,654 Consolidated $ 75,953 $ 67,978 Services Completion Fluids & Products Division $ 2,049 $ 4,016 Water & Flowback Services Division 59,603 31,510 Compression Division 61,776 55,905 Consolidated $ 123,428 $ 91,431 Interdivision revenues Completion Fluids & Products Division $ (2 ) $ 1 Water & Flowback Services Division 222 556 Compression Division — — Interdivision eliminations (220 ) (557 ) Consolidated $ — $ — Total revenues Completion Fluids & Products Division $ 53,104 $ 56,228 Water & Flowback Services Division 61,075 38,179 Compression Division 85,422 65,559 Interdivision eliminations (220 ) (557 ) Consolidated $ 199,381 $ 159,409 Income (loss) before taxes Completion Fluids & Products Division $ 2,449 $ 19,473 Water & Flowback Services Division 6,548 (1,265 ) Compression Division (14,018 ) (14,333 ) Interdivision eliminations — (167 ) Corporate Overhead (1) (14,912 ) (7,872 ) Consolidated $ (19,933 ) $ (4,164 ) March 31, 2018 December 31, 2017 (In Thousands) Total assets Completion Fluids & Products Division $ 303,157 $ 293,507 Water & Flowback Services Division 224,570 139,771 Compression Division 895,979 784,745 Corporate Overhead and eliminations (23,351 ) (30,501 ) Assets of discontinued operations 7,907 121,092 Consolidated $ 1,408,262 $ 1,308,614 (1) Amounts reflected include the following general corporate expenses: Three Months Ended 2018 2017 (In Thousands) General and administrative expense $ 12,598 $ 9,555 Depreciation and amortization 151 91 Interest expense 4,007 3,774 Warrants fair value adjustment (1,994 ) (5,976 ) Other general corporate (income) expense, net 150 428 Total $ 14,912 $ 7,872

Industry Segments - Revenue, In

Industry Segments - Revenue, Income from Operations, and Assets by Reporting Segment - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Industry Segments Details [Line Items]
Product sales	$ 75,953	$ 67,978
Services and rentals	123,428	91,431
Intersegment revenues	0	0
Revenue, Net	199,381	159,409
Income (loss) before taxes	(21,057)	(4,245)
Assets	(1,408,262)	(1,308,614)	$ (1,308,614)
Disposal Group, Including Discontinued Operation, Assets	7,907	121,092	$ 121,134
Completion Fluids & Products Division [Member]
Industry Segments Details [Line Items]
Product sales	51,057	52,211
Services and rentals	2,049	4,016
Intersegment revenues	(2)	1
Revenue, Net	53,104	56,228
Assets	(303,157)	(293,507)
Water & Flowback Services [Member]
Industry Segments Details [Line Items]
Product sales	1,250	6,113
Services and rentals	59,603	31,510
Intersegment revenues	222	556
Revenue, Net	61,075	38,179
Assets	(224,570)	(139,771)
Compression Division [Member]
Industry Segments Details [Line Items]
Product sales	23,646	9,654
Services and rentals	61,776	55,905
Intersegment revenues	0	0
Revenue, Net	85,422	65,559
Assets	(895,979)	(784,745)
Interdivision Eliminations [Member]
Industry Segments Details [Line Items]
Intersegment revenues	(220)	(557)
Revenue, Net	(220)	(557)
Corporate Overhead [Member]
Industry Segments Details [Line Items]
Income (loss) before taxes	(14,912)	(7,872)
Assets	$ (23,351)	$ (30,501)

Industry Segments - Corporate E

Industry Segments - Corporate Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
General and administrative expense	$ 30,803	$ 26,751
Depreciation, amortization, and accretion	26,441	26,524
Other (income) expense, net	2,776	461
Warrants fair value adjustment	(1,995)	(5,976)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	21,057	4,245
Interest expense, net	14,973	13,767
Corporate Overhead [Member]
Segment Reporting Information [Line Items]
General and administrative expense	12,598	9,555
Depreciation, amortization, and accretion	151	91
Other (income) expense, net	150	428
Warrants fair value adjustment	(1,994)	(5,976)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	14,912	7,872
Interest expense, net	$ 4,007	$ 3,774

Basis of Presentation and Sig24

Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Accounting Policies [Abstract]
Number of Operating Segments	3
Foreign Currency Transaction Gain (Loss), Realized	$ 900	$ (600)
Effective tax rate	5.60%
Debt Instrument [Line Items]
Restricted cash	$ 8,978		$ 261
Payments Related to Tax Withholding for Share-based Compensation	$ 293	0
Number of Shares of Convertible Debt, Warrants	11.2
Preferred, Fair Value Adjustment	$ (1,358)	(1,631)
Fair Value Adjustment Of Warrants, Income Statement	(1,994)	$ (5,976)
Asset Retirement Obligation, Accretion Expense	159
Increase (Decrease) in Asset Retirement Obligations	32
Compressco Partners Senior Notes 7.50% [Member]
Debt Instrument [Line Items]
Fair value of Senior Notes	353,500
Carrying value of Senior Notes	$ 350,000
TETRA Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	11.00%
Fair value of Senior Notes	$ 128,500		130,800
Carrying value of Senior Notes			125,000
Compressco Partners Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	7.25%
Fair value of Senior Notes	$ 277,400		279,700
Carrying value of Senior Notes	$ 295,900		$ 295,900

Basis of Presentation and Sig25

Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies - Goodwill and Impairment of Long-Lived Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 21,856	$ 6,636

Basis of Presentation and Sig26

Basis of Presentation and Significant Accounting Policies Asset Retirement Obligations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	$ 11,929	$ 11,738
Asset Retirement Obligation, Accretion Expense	159
Increase (Decrease) in Asset Retirement Obligations	$ 32

Basis of Presentation and Sig27

Basis of Presentation and Significant Accounting Policies Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Accounting Policies [Abstract]
Effective Income Tax Rate Reconciliation, Percent	(5.60%)
Provision (benefit) for income taxes	$ 1,124	$ 54,100	$ 81

Discontinued Operations (Detail

Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net	$ 7,907		$ 28,927
Disposal Group Including Discontinued Operation Revenue	4,663	$ 8,592
Disposal Group, Including Discontinued Operation, Cost of Revenue	11,361	11,027
Disposal Group, Including Discontinued Operation, Depreciation and Amortization	2,069	2,954
Disposal Group, Including Discontinued Operation, General and Administrative Expense	1,439	1,705
Disposal Group, Including Discontinued Operation, Interest Expense	39
Disposal Group, Including Discontinued Operation, Other Income		96
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax	(10,245)	(6,998)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	33,788	0
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	(44,033)	(6,998)
Discontinued Operation, Tax Effect of Discontinued Operation	(2,327)	9
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(41,706)	(7,007)
Disposal Group, Including Discontinued Operation, Inventory	0		4,616
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	0		85,873
Disposal Group, Including Discontinued Operation, Assets, Other Assets	0		1,718
Disposal Group, Including Discontinued Operation, Assets	7,907	121,092	121,134
Disposal Group, Including Discontinued Operation, Accounts Payable, Current	6,737		14,029
Disposal Group, Including Discontinued Operation, Accrued Liabilities, Current	7,550		11,183
Disposal Group, Including Discontinued Operation, Liabilities, Decommissioning and Asset Retirement Obligations	0		46,662
Disposal Group, Including Discontinued Operation, Liabilities	14,287		71,874
Maritech [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net	1,433		1,542
Disposal Group Including Discontinued Operation Revenue	186	231
Disposal Group, Including Discontinued Operation, Cost of Revenue	238	287
Disposal Group, Including Discontinued Operation, Depreciation and Amortization	213	370
Disposal Group, Including Discontinued Operation, General and Administrative Expense	186	237
Disposal Group, Including Discontinued Operation, Interest Expense	0
Disposal Group, Including Discontinued Operation, Other Income		0
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax	(451)	(663)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Disposal Group, Including Discontinued Operation, Inventory	0		0
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	0		0
Disposal Group, Including Discontinued Operation, Assets, Other Assets	0		44
Disposal Group, Including Discontinued Operation, Assets	1,433		1,586
Disposal Group, Including Discontinued Operation, Accounts Payable, Current	228		87
Disposal Group, Including Discontinued Operation, Accrued Liabilities, Current	2,222		2,278
Disposal Group, Including Discontinued Operation, Liabilities, Decommissioning and Asset Retirement Obligations	0		46,662
Disposal Group, Including Discontinued Operation, Liabilities	2,450		49,027
Offshore Services [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net	6,474		27,385
Disposal Group Including Discontinued Operation Revenue	4,477	8,361
Disposal Group, Including Discontinued Operation, Cost of Revenue	11,123	10,740
Disposal Group, Including Discontinued Operation, Depreciation and Amortization	1,856	2,584
Disposal Group, Including Discontinued Operation, General and Administrative Expense	1,253	1,468
Disposal Group, Including Discontinued Operation, Interest Expense	39
Disposal Group, Including Discontinued Operation, Other Income		96
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax	(9,794)	(6,335)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Disposal Group, Including Discontinued Operation, Inventory	0		4,616
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	0		85,873
Disposal Group, Including Discontinued Operation, Assets, Other Assets	0		1,674
Disposal Group, Including Discontinued Operation, Assets	6,474		119,548
Disposal Group, Including Discontinued Operation, Accounts Payable, Current	6,509		13,942
Disposal Group, Including Discontinued Operation, Accrued Liabilities, Current	5,328		8,905
Disposal Group, Including Discontinued Operation, Liabilities, Decommissioning and Asset Retirement Obligations	0		0
Disposal Group, Including Discontinued Operation, Liabilities	$ 11,837		$ 22,847

Long-Term Debt and Other Borr29

Long-Term Debt and Other Borrowings (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 823,565	$ 629,855
Less current portion	0	0
Long-term debt, net of current portion	823,565	629,855
Proceeds from Issuance of Debt	344,100
Debt Instrument, Fee Amount	6,200
Payments of Financing Costs	3,540
Parent Company [Member]
Debt Instrument [Line Items]
Long-term debt	191,151	117,679
Less current portion	0	0
Long-term debt, net of current portion	$ 191,151	117,679
Debt leverage ratio	0
Line of Credit [Member] | Parent Company [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Sep. 30, 2019
Long-term debt	$ 73,143	0
Unamortized deferred finance costs	1,300	$ 0
Bank line of credit, outstanding balance	74,400
Bank line of credit, letters of credit and guarantees	6,100
Bank line of credit, net availability	$ 119,500
2015 Senior Notes [Member] | Parent Company [Member]
Debt Instrument [Line Items]
Senior Note interest rate	11.00%	11.00%
Debt Instrument, Maturity Date	Nov. 5, 2022
Long-term debt	$ 118,008	$ 117,679
Unamortized discount	3,700	3,900
Unamortized deferred finance costs	3,300	3,400
CSI Compressco [Member]
Debt Instrument [Line Items]
Long-term debt	$ 632,414	512,176
CSI Compressco [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Aug. 4, 2019
Long-term debt	$ 0	223,985
Unamortized deferred finance costs	$ 0	$ 4,000
CSI Compressco [Member] | Compressco Partners Senior Notes [Member]
Debt Instrument [Line Items]
Senior Note interest rate	7.25%	7.25%
Debt Instrument, Maturity Date	Aug. 15, 2022
Long-term debt	$ 288,588	$ 288,191
Unamortized discount	2,700	2,800
Unamortized deferred finance costs	$ 4,700	$ 5,000
Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
Debt Instrument, Redemption, Period Three [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
Debt Instrument, Redemption, Period Four [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%

CCLP Series A Preferred Units30

CCLP Series A Preferred Units CCLP Series A Preferred Units (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Preferred Units [Line Items]
Proceeds from Convertible Debt		$ 77,300
Dividend rate, percentage	11.00%
Annualized distribution per unit on convertible debt	$ 1.2573
Maximum settlement of preferred unit conversion	30,000,000
Preferred Units	$ 54,214		$ 61,436
Preferred, Fair Value Adjustment	$ (1,358)	(1,631)
Shares Issued, Price Per Share	$ 11.43
Liabilities, Fair Value Adjustment	$ (1,358)	$ (1,631)
Maximum Settlement of Preferred, If Converted	8,600,000
Settlement of Series A Preferred, If settled	$ 62,600
Incremental Settlement of Series A Preferred, If converted	1,400,000
TETRA [Member]
Preferred Units [Line Items]
Proceeds from Convertible Debt	$ 10,000
Number of Shares of Convertible Debt	874,891
Preferred Units, Outstanding	658,281
CSI Compressco [Member]
Preferred Units [Line Items]
Number of Shares of Convertible Debt	6,999,126
Preferred Units, Outstanding	5,241,563

Market Risks and Derivative H31

Market Risks and Derivative Hedge Contracts (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Derivatives, Fair Value [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	$ (161)		$ (127)
Derivative [Line Items]
Net gains associated with foreign currency derivatives	0	$ 700
Forward Purchase Contract, Euro [Member]
Derivative [Line Items]
U.S. Dollar notional amount	$ 1,117
Traded exchange rate	1.24
Value date	Apr. 18, 2018
Forward Purchase Contract, Pounds Sterling [Member]
Derivative [Line Items]
U.S. Dollar notional amount	$ 5,624
Traded exchange rate	1.41
Value date	Apr. 18, 2018
Forward Purchase Contract, Brazil Real [Member]
Derivative [Line Items]
U.S. Dollar notional amount	$ 5,925
Traded exchange rate	1.30
Value date	Apr. 18, 2018
Forward Purchase Contract, Mexican Pesos [Member]
Derivative [Line Items]
U.S. Dollar notional amount	$ 1,653
Traded exchange rate	18.76
Value date	Apr. 18, 2018
Forward Sale Contract, Norwegian Krone [Member]
Derivative [Line Items]
U.S. Dollar notional amount	$ 3,782
Traded exchange rate	7.75
Value date	Apr. 18, 2018
Forward Sale Contract, Mexican Pesos (2) [Member]
Derivative [Line Items]
U.S. Dollar notional amount	$ 6,760
Traded exchange rate	18.79
Value date	Apr. 18, 2018
Current Assets [Member]
Derivatives, Fair Value [Line Items]
Forward purchase contracts	$ 56			$ 130
Forward sale contracts	48		111
Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Forward purchase contracts	(6)		(113)
Forward sale contracts	$ (259)		$ (255)

Market Risks and Derivative H32

Market Risks and Derivative Hedge Contracts Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Net gains associated with foreign currency derivatives	$ 0	$ 0.7

Equity (Details)

Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Equity Table [Line Items]
Common stock, shares authorized	250,000,000		250,000,000
Stockholders' equity rollforward
Beginning balance for the period	$ 352,561	$ 400,466
Net income (loss)	(62,763)	(11,252)
Foreign currency translation adjustment, including taxes	1,283	2,193
Comprehensive income	(61,480)	(9,059)
Proceeds from the issuance of stock	28,115	11
Conversion of Stock, Amount Converted	10,103	2,388
Distributions to public unitholders	(4,358)	(7,248)
Equity-based compensation	779	2,469
Treasury stock and other	(259)	(78)
Ending balance	325,461	388,927
TETRA [Member]
Stockholders' equity rollforward
Beginning balance for the period	208,080	233,523
Net income (loss)	(53,648)	(2,463)
Foreign currency translation adjustment, including taxes	1,668	2,052
Comprehensive income	(51,980)	(411)
Proceeds from the issuance of stock	28,115	11
Conversion of Stock, Amount Converted	0	0
Distributions to public unitholders	0	0
Equity-based compensation	1,434	1,513
Treasury stock and other	(224)	(36)
Ending balance	185,425	234,578
Noncontrolling Interest [Member]
Stockholders' equity rollforward
Beginning balance for the period	144,481	166,943
Net income (loss)	(9,115)	(8,789)
Foreign currency translation adjustment, including taxes	(385)	141
Comprehensive income	(9,500)	(8,648)
Proceeds from the issuance of stock	0	0
Conversion of Stock, Amount Converted	10,103	2,388
Distributions to public unitholders	(4,358)	(7,248)
Equity-based compensation	(655)	956
Treasury stock and other	(35)	(42)
Ending balance	$ 140,036	$ 154,349

Commitments and Contingencies C

Commitments and Contingencies Commitment and Contingencies (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Litigation Settlement, Amount Awarded from Other Party	$ 12.8

Industry Segments Additional De

Industry Segments Additional Details (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Industry Segments Details [Line Items]
Number of Reportable Segments	3
Disposal Group, Including Discontinued Operation, Assets	$ 7,907	$ 121,092	$ 121,134
Revenue, Net	199,381	159,409
General and administrative expense	30,803	26,751
Depreciation, amortization, and accretion	26,441	26,524
Interest expense, net	14,973	13,767
Warrants fair value adjustment	(1,995)	(5,976)
Other Nonoperating Income (Expense)	(2,776)	(461)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(21,057)	(4,245)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(19,933)	(4,164)
Completion Fluids & Products Division [Member]
Industry Segments Details [Line Items]
Revenue, Net	53,104	56,228
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	2,449	19,473
Corporate Overhead [Member]
Industry Segments Details [Line Items]
General and administrative expense	12,598	9,555
Depreciation, amortization, and accretion	151	91
Interest expense, net	4,007	3,774
Warrants fair value adjustment	(1,994)	(5,976)
Other Nonoperating Income (Expense)	(150)	(428)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(14,912)	(7,872)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(14,912)	(7,872)
Water & Flowback Services [Member]
Industry Segments Details [Line Items]
Revenue, Net	61,075	38,179
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	6,548	(1,265)
Compression Division [Member]
Industry Segments Details [Line Items]
Revenue, Net	85,422	65,559
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(14,018)	(14,333)
Interdivision Eliminations [Member]
Industry Segments Details [Line Items]
Revenue, Net	(220)	(557)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 0	$ (167)

Revenue from Contracts with C36

Revenue from Contracts with Customers Disaggregation of Revenue - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 199,381	$ 159,409
Revenue, Remaining Performance Obligation	6,649
Remaining credits expected to be issued	600		$ 2,800
Completion Fluids & Products Division [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	53,104	56,228
Water & Flowback Services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	61,075	38,179
Compression Division [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	85,422	65,559
Interdivision Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	(220)	(557)
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	151,929	122,909
UNITED STATES | Completion Fluids & Products Division [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	27,909	40,802
UNITED STATES | Water & Flowback Services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	47,038	24,140
UNITED STATES | Compression Division [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	76,980	57,968
UNITED STATES | Interdivision Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2	(1)
Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	47,452	36,500
Non-US [Member] | Completion Fluids & Products Division [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	25,195	15,426
Non-US [Member] | Water & Flowback Services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	14,037	14,039
Non-US [Member] | Compression Division [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	8,442	7,591
Non-US [Member] | Interdivision Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ (222)	$ (556)

Revenue from Contracts with C37

Revenue from Contracts with Customers Contract Assets and Liabilities - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Trade accounts receivable, net of allowances	$ 175,262		$ 144,051
Deferred Revenue	35,929		$ 17,050
Allowance for Doubtful Accounts Receivable, Write-offs	200	$ 600
Contract with Customer, Liability, Revenue Recognized	17,800
Total Change in Deferred Revenue	$ 18,879

Revenue from Contracts with C38

Revenue from Contracts with Customers Services (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation	$ 6,649
Remaining credits expected to be issued	600	$ 2,800
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-12-31
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation	1,732
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-12-31
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation	1,929
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-12-31
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation	1,740
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-12-31
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation	702
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-12-31
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation	$ 546

Acquisitions and Dispositions D

Acquisitions and Dispositions Disposition (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 02, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration			$ 3,100,000
Notes Receivable, Related Parties			7,500,000
Loans Receivable with Fixed Rates of Interest			0.0152
Asset Retirement Obligation	$ 11,929,000		11,738,000
Line of Credit Facility, Maximum Borrowing Capacity		$ 47,000,000
Gain (Loss) on Disposition of Business	(31,457,000)
Business Exit Costs	$ 1,400,000
Maritech [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset Retirement Obligation			$ 46,800,000

Acquisitions and Dispositions A

Acquisitions and Dispositions Acquisition (Details) - USD ($)	1 Months Ended	3 Months Ended
	Feb. 28, 2018	Mar. 31, 2018	Mar. 31, 2017	Feb. 27, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 42,000,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	7,772,021
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned				$ 28,200,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				15,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other		$ 16,880,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		10,999,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		42,032,000
Goodwill, Acquired During Period		15,220,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		85,131,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities		7,189,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		7,189,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net		77,942,000
Business Combination, Liabilities Arising from Contingencies, Amount Recognized				6,700,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low				$ 0
Goodwill, Purchase Accounting Adjustments		15,200,000
Indefinite-Lived Trademarks		3,300,000
Finite-Lived Customer Relationships, Gross		37,200,000
Other Finite-Lived Intangible Assets, Gross		1,500,000
Business Acquisition, Pro Forma Revenue		213,531,000	$ 170,933,000
Business Acquisition, Pro Forma Depreciation, Amortization, and Accretion		26,951,000	27,051,000
Business Acquisition, Pro Forma Depreciation, Amortization, and Accretion		500,000
Business Acquisition, Pro Forma Gross Profit		32,432,000	23,659,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax		(21,437,000)	(5,411,000)
Business Acquisition, Pro Forma Net Income (Loss)		(12,322,000)	$ 3,378,000
Amortization of Intangible Assets		200,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		8,100,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		1,800,000
Business Acquisition, Transaction Costs		$ 400,000
Minimum [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life		5 years
Minimum [Member] | Machinery and Equipment [Member]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life		3 years
Minimum [Member] | Automobiles [Member]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life		3 years
Maximum [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life		16 years
Maximum [Member] | Machinery and Equipment [Member]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life		15 years
Maximum [Member] | Automobiles [Member]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life		4 years

Uncategorized Items - tti-20180

Label	Element	Value
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 36,531,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 26,389,000