Basis of Presentation and Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Asset Retirement Obligation [Policy Text Block]

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. We are required to take certain actions in connection with the retirement of these assets. The values of our asset retirement obligations for these properties were $12.1 million and $11.7 million as of June 30, 2018 and December 31, 2017, respectively. Asset retirement obligations are recorded in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("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 and six month period ended June 30, 2018, are as follows:



	Three Months Ended June 30, 2018			Six Months Ended June 30, 2018
	(In Thousands)
Beginning balance for the period, as reported	$	11,929		$	11,738
Activity in the period:
Accretion of liability	150			309
Revisions in estimated cash flows	(6		)	26
Ending balance	$	12,073		$	12,073

We review the adequacy of our asset retirement obligation liabilities whenever indicators suggest that the estimated cash flows underlying the liabilities have changed.

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 June 30, 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

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."

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 June 30, 2018 and December 31, 2017 are as follows:



	June 30, 2018		December 31, 2017
	(In Thousands)
Finished goods	$	60,011	$	66,377
Raw materials	3,934		4,027
Parts and supplies	44,585		33,632
Work in progress	24,837		11,402
Total inventories	$	133,367	$	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 June 30,		Six Months Ended June 30,
	2018	2017	2018	2017
	(In Thousands)
Number of weighted average common shares outstanding	122,474	114,534	125,553	114,375
Assumed exercise of equity awards and warrants	—	—	—	—
Average diluted shares outstanding	122,474	114,534	125,553	114,375

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, as the functional currencies for our operations in Finland and Sweden, the United Kingdom, Norway, Canada, Brazil, Argentina, and certain of our operations in Mexico, respectively. 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 $0.6 million and $(0.3) million during the three and six month periods ended June 30, 2018 and $0.6 million and $1.2 million during the three and six month periods ended June 30, 2017, respectively.

On June 30, 2018, we determined the economy in Argentina to be highly inflationary. As a result of this determination, beginning July 1, 2018, our reporting of our operations in Argentina will reflect the remeasurement of the functional currency from the Argentine peso to the U.S. dollar.

Income taxes policy

Income Taxes

Our consolidated provision for income taxes during the first six 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 six month period ended June 30, 2018 of negative 12.1% 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 June 30, 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. 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. We recognized an income tax expense of $54.1 million in the fourth quarter of 2017 associated with the impact of the Act, which 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 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 and six month periods ended June 30, 2018.

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 values of the liabilities for the warrants to purchase 11.2 million shares of our common stock (the "Warrants") and the 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 in certain circumstances, 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 values 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 June 30, 2018 and December 31, 2017, were approximately $128.2 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 the face amount of the 11% Senior Note of $125.0 million both at June 30, 2018 and December 31, 2017. The fair values of the publicly traded CCLP 7.25% Senior Notes (as herein defined) at June 30, 2018 and December 31, 2017, were approximately $271.5 million and $279.7 million, respectively. Those fair values compare to the face amount of $295.9 million both at June 30, 2018 and December 31, 2017. The fair value of the publicly traded CCLP 7.50% Senior Secured Notes at June 30, 2018 was approximately $351.8 million. This fair value compares to aggregate principal amount of such notes at June 30, 2018 of $350.0 million. We calculated the fair values of our 11% Senior Note as of June 30, 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 June 30, 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 and six month periods ended June 30, 2018, the changes in the fair value of the CCLP Preferred Units resulted in $0.5 million being credited to earnings and $0.8 million charged to earnings, respectively, 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 June 30, 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 and six month periods ended June 30, 2018, the changes in the fair value of the Warrants liability resulted in $2.2 million being charged to earnings and $0.2 million being charged to earnings, respectively, 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. These 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). During the six months ended June 30, 2018, the fair value of the stock appreciation rights increased $0.2 million, which was charged to earnings in the consolidated statement of operations.

A summary of these fair value measurements as of June 30, 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	June 30, 2018			(Level 1)		(Level 2)			(Level 3)
	(In Thousands)
CCLP Series A Preferred Units	$	(45,644	)	$	—	$	—		$	(45,644	)
Warrants liability	(13,403		)	—		—			(13,403		)
Cash-settled stock appreciation rights	(287		)	—		—			(287		)
Asset for foreign currency derivative contracts	180			—		180			—
Liability for foreign currency derivative contracts	(241		)	—		(241		)	—
Net liability	$	(59,395	)



				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	(368		)	—		(378		)	—
Net liability	$	(74,862	)

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.

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 June 30, 2018 consolidated balance sheet, and our consolidated results of operations for the three and six month periods ended June 30, 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 right-of-use lease assets and lease liabilities on the balance sheet related to the right to use the underlying asset for the lease term. In addition, through improved disclosure requirements, the ASU will enable users of financial statements to further understand the amount, timing, and uncertainty of cash flows arising from leases. We are currently assessing the potential effects of these changes to our consolidated financial statements. Our current operating lease portfolio consists primarily of real estate, vehicles, and equipment leases. Based on our preliminary assessment, upon adoption of the ASU, we will record significant right-to-use assets and lease obligations pursuant to the new requirements. We are evaluating our portfolio of existing leases for consideration of the accounting impact of each lease. We are also evaluating and are developing internal policies to address the requirements under this ASU.

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. 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. 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. 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.

In June 2018, the FASB issued ASU 2018-07, “Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting” to align the measurement and classification guidance for share-based payments to nonemployees with the guidance currently applied to employees, with certain exceptions. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods, with early adoption permitted. We are currently assessing the potential effects of these changes to our consolidated financial statements.