Oceaneering International (OII) 10-Q 4 Nov 19 2019 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	1-10945
Entity Registrant Name	OCEANEERING INTERNATIONAL INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-2628227
Entity Address, Address Line One	11911 FM 529
Entity Address, City or Town	Houston,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77041
City Area Code	713
Local Phone Number	329-4500
Title of 12(b) Security	Common stock, par value $0.25 per share
Trading Symbol	OII
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		98,929,503
Entity Central Index Key	0000073756
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current Assets:
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 340,323	$ 354,259
Accounts receivable, net of allowances for doubtful accounts of $6,593 and $7,116	376,027	368,885
Contract assets	197,431	256,201
Inventory, net	198,749	194,507
Other current assets	54,667	71,037
Total Current Assets	1,167,197	1,244,889
Property and equipment, at cost	2,904,879	2,837,587
Property and equipment, at cost	1,958,498	1,872,917
Net property and equipment	946,381	964,670
Other Assets:
Goodwill	410,449	413,121
Other noncurrent assets	189,713	202,318
Right-of-use operating lease assets	171,952
Assets, Noncurrent	772,114
Total other assets		615,439
Total Assets	2,885,692	2,824,998
Current Liabilities:
Accounts payable	101,634	102,636
Accrued liabilities	313,819	306,933
Contract liabilities	94,961	85,172
Total current liabilities	510,414	494,741
Long-term debt	799,855	786,580
Long-term operating lease liabilities	162,881
Other long-term liabilities	109,463	128,379
Commitments and contingencies
Equity:
Common stock, par value $0.25 per share; 360,000,000 shares authorized; 110,834,088 shares issued	27,709	27,709
Additional paid-in capital	203,955	220,421
Treasury stock; 11,904,585 and 12,294,873 shares, at cost	(681,717)	(704,066)
Retained earnings	2,113,156	2,204,548
Accumulated other comprehensive loss	(366,087)	(339,377)
Oceaneering shareholders' equity	1,297,016	1,409,235
Noncontrolling interest	6,063	6,063
Total equity	1,303,079	1,415,298
Total Liabilities and Equity	$ 2,885,692	$ 2,824,998

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowances for doubtful accounts	$ 6,593	$ 7,116
Common Stock, par value (in dollars per share)	$ 0.25	$ 0.25
Common Stock, shares authorized (in shares)	360,000,000	360,000,000
Common Stock, shares issued (in shares)	110,834,088	110,834,088
Treasury stock, shares (in shares)	11,904,585	12,294,873

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenue	$ 497,647	$ 519,300	$ 1,487,314	$ 1,414,387
Cost of services and products	448,586	471,665	1,368,683	1,318,196
Gross margin	49,061	47,635	118,631	96,191
Selling, general and administrative expense	54,255	49,187	155,174	144,529
Income (loss) from operations	(5,194)	(1,552)	(36,543)	(48,338)
Interest income	2,089	2,645	6,541	8,187
Interest expense, net of amounts capitalized	(11,382)	(9,885)	(31,005)	(28,058)
Equity in income (losses) of unconsolidated affiliates	554	(1,684)	390	(3,264)
Other income (expense), net	(3,660)	5,632	(2,934)	(6,398)
Income (loss) before income taxes	(17,593)	(4,844)	(63,551)	(77,871)
Provision (benefit) for income taxes	7,930	$ 61,135	21,981	70,317
Net Income (Loss)	$ (25,523)		$ (85,532)	$ (148,188)
Weighted-average shares outstanding
Basic (in shares)	98,930	98,533	98,858	98,483
Diluted (in shares)	98,930	98,533	98,858	98,483
Earnings (loss) per share
Basic (in dollars per share)	$ (0.26)	$ (0.67)	$ (0.87)	$ (1.50)
Diluted (in dollars per share)	$ (0.26)	$ (0.67)	$ (0.87)	$ (1.50)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (25,523)		$ (85,532)	$ (148,188)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	(33,159)	$ (5,688)	(26,710)	(21,318)
Total other comprehensive income (loss)	(33,159)	(5,688)	(26,710)	(21,318)
Comprehensive income (loss)	$ (58,682)	$ (71,667)	$ (112,242)	$ (169,506)

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities:
Net income (loss)	$ (85,532)	$ (148,188)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	153,357	164,674
Deferred income tax provision (benefit)	(8,171)	27,021
Net loss (gain) on sales of property and equipment and cost method investment	(4,935)	(8,513)
Noncash compensation	8,202	8,562
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable and contract assets	51,629	(85,278)
Inventory	(10,765)	(7,094)
Other operating assets	16,502	6,377
Currency translation effect on working capital, excluding cash	(4,375)	2,495
Current liabilities	(340)	60,998
Other operating liabilities	(3,405)	14,602
Total adjustments to net income (loss)	197,699	183,844
Net Cash Provided by (Used in) Operating Activities	112,167	35,656
Cash Flows from Investing Activities:
Purchases of property and equipment	(128,847)	(83,919)
Business acquisitions, net of cash acquired	0	(68,398)
Proceeds from Sale and Maturity of Debt Securities, Available-for-sale	0	62,021
Purchase of Angolan bonds	0	(10,417)
Distributions of capital from unconsolidated affiliates	2,395	2,372
Proceeds from Sale and Maturity of Other Investments		15,897
Dispositions of property and equipment	6,406
Net Cash Provided by (Used in) Investing Activities	(120,046)	(82,444)
Cash Flows from Financing Activities:
Net proceeds from issuance of 6.000% Senior Notes, net of issuance costs	0	295,816
Repayment of term loan facility	0	(300,000)
Other financing activities	(2,320)	(1,565)
Net Cash Provided by (Used in) Financing Activities	(2,320)	(5,749)
Effect of exchange rates on cash	(3,737)	(10,629)
Net Increase (Decrease) in Cash and Cash Equivalents	(13,936)	(63,166)
Cash and Cash Equivalents—Beginning of Period	354,259	$ 430,316
Cash and Cash Equivalents—End of Period	$ 340,323

Consolidated Statements Of Ca_2

Consolidated Statements Of Cash Flows (Parenthetical)	Sep. 30, 2018
Senior Notes
Interest rate, stated percentage	6.00%

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Restricted Stock Units (RSUs) [Member]	Restricted Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]Restricted Stock Units (RSUs) [Member]	Additional Paid-in Capital [Member]Restricted Stock [Member]	Treasury Stock [Member]	Treasury Stock [Member]Restricted Stock Units (RSUs) [Member]	Treasury Stock [Member]Restricted Stock [Member]	Retained Earnings [Member]	Currency Translation Adjustments [Member]	Pension [Member]	Oceaneering Shareholders' Equity [Member]	Oceaneering Shareholders' Equity [Member]Restricted Stock Units (RSUs) [Member]	Oceaneering Shareholders' Equity [Member]Restricted Stock [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2017	$ 1,664,518			$ 27,709	$ 225,125			$ (718,946)			$ 2,417,412	$ (292,351)	$ 215	$ 1,659,164			$ 5,354
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(49,133)										(49,133)			(49,133)
Other comprehensive income (loss)	22,176											22,176		22,176
Restricted stock and restricted stock unit activity		$ 1,179	$ 0			$ (9,186)	$ (3,951)		$ 10,365	$ 3,951					$ 1,179	$ 0
Ending balance at Mar. 31, 2018	1,638,203			27,709	211,988			(704,630)			2,367,742	(270,175)	215	1,632,849			5,354
Beginning balance at Dec. 31, 2017	1,664,518			27,709	225,125			(718,946)			2,417,412	(292,351)	215	1,659,164			5,354
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(148,188)
Ending balance at Sep. 30, 2018	1,501,473			27,709	217,613			(704,436)			2,268,687	(313,669)	215	1,496,119			5,354
Beginning balance at Mar. 31, 2018	1,638,203			27,709	211,988			(704,630)			2,367,742	(270,175)	215	1,632,849			5,354
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)											(33,076)
Other comprehensive income (loss)												(37,806)
Restricted stock and restricted stock unit activity		3,213				3,085			128						3,213
Ending balance at Jun. 30, 2018	1,570,534			27,709	215,073			(704,502)			2,334,666	(307,981)	215	1,565,180			5,354
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)											(65,979)
Other comprehensive income (loss)												(5,688)
Restricted stock and restricted stock unit activity		2,606				2,540			66						2,606
Ending balance at Sep. 30, 2018	1,501,473			27,709	217,613			(704,436)			2,268,687	(313,669)	215	1,496,119			5,354
Beginning balance at Dec. 31, 2018	1,415,298			27,709	220,421			(704,066)			2,204,548	(339,377)	0	1,409,235			6,063
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(24,827)										(24,827)			(24,827)
Other comprehensive income (loss)	6,246											6,246		6,246
Restricted stock and restricted stock unit activity		643	$ 0			(16,494)			17,137	$ 5,143					643	$ 0
Ending balance at Mar. 31, 2019	1,391,500			27,709	198,784			(681,786)			2,173,861	(333,131)	0	1,385,437			6,063
Beginning balance at Dec. 31, 2018	1,415,298			27,709	220,421			(704,066)			2,204,548	(339,377)	0	1,409,235			6,063
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(85,532)
Ending balance at Sep. 30, 2019	1,303,079			27,709	203,955			(681,717)			2,113,156	(366,087)	0	1,297,016			6,063
Beginning balance at Mar. 31, 2019	1,391,500			27,709	198,784			(681,786)			2,173,861	(333,131)	0	1,385,437			6,063
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)											(35,182)
Other comprehensive income (loss)												203
Restricted stock and restricted stock unit activity						2,443	$ (5,143)		$ 69						2,512
Ending balance at Jun. 30, 2019	1,359,033			27,709	201,227			(681,717)			2,138,679	(332,928)	0	1,352,970			6,063
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(25,523)										(25,523)
Other comprehensive income (loss)												(33,159)
Restricted stock and restricted stock unit activity		$ 2,728				$ 2,728									$ 2,728
Ending balance at Sep. 30, 2019	$ 1,303,079			$ 27,709	$ 203,955			$ (681,717)			$ 2,113,156	$ (366,087)	$ 0	$ 1,297,016			$ 6,063

Summary Of Major Accounting Pol

Summary Of Major Accounting Policies	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Summary Of Major Accounting Policies	SUMMARY OF MAJOR ACCOUNTING POLICIES Basis of Presentation . Oceaneering International, Inc. ("Oceaneering," "we" or "us") has prepared these unaudited consolidated financial statements pursuant to instructions for quarterly reports on Form 10-Q, which we are required to file with the United States Securities and Exchange Commission (the "SEC"). These financial statements do not include all information and footnotes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP"). These financial statements reflect all adjustments that we believe are necessary to present fairly our financial position as of September 30, 2019 and our results of operations and cash flows for the periods presented. Except as otherwise disclosed herein, all such adjustments are of a normal and recurring nature. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in our annual report on Form 10-K for the year ended December 31, 2018 . The results for interim periods are not necessarily indicative of annual results. Principles of Consolidation. The consolidated financial statements include the accounts of Oceaneering and our 50% or more owned and controlled subsidiaries. We also consolidate entities that are determined to be variable interest entities if we determine that we are the primary beneficiary; otherwise, we account for those entities using the equity method of accounting. We use the equity method to account for our investments in unconsolidated affiliated companies of which we own an equity interest of between 20% and 50% and as to which we have significant influence, but not control, over operations. We use the cost method for all other long-term investments. Investments in entities that we do not consolidate are reflected on our balance sheet in other noncurrent assets. All significant intercompany accounts and transactions have been eliminated. Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires that our management make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Cash and Cash Equivalents. Cash and cash equivalents include demand deposits and highly liquid investments with original maturities of three months or less from the date of investment. Accounts Receivable – Allowances for Doubtful Accounts. We determine the need for allowances for doubtful accounts using the specific identification method. We generally do not require collateral from our customers. Inventory . Inventory is valued at the lower of cost or net realizable value. We determine cost using the weighted-average method. Property and Equipment and Long-Lived Intangible Assets. We provide for depreciation of assets included in property and equipment on the straight-line method over their estimated useful lives. We charge the costs of repair and maintenance of property and equipment to operations as incurred, while we capitalize the costs of improvements that extend asset lives or functionality. Upon the disposition of property and equipment, the related cost and accumulated depreciation accounts are relieved and any resulting gain or loss is included as an adjustment to cost of services and products. Intangible assets, primarily acquired in connection with business combinations, include trade names, intellectual property and customer relationships and are being amortized over their estimated useful lives. We capitalize interest on assets where the construction period is anticipated to be more than three months. We capitalized no interest and $1.9 million of interest in the three-month periods ended September 30, 2019 and 2018 , respectively, and $3.4 million and $5.3 million of interest in the in the nine-month periods ended September 30, 2019 and 2018 , respectively. We do not allocate general administrative costs to capital projects. Our management periodically, and upon the occurrence of a triggering event, reviews the realizability of our property and equipment and long-lived intangible assets to determine whether any events or changes in circumstances indicate that the carrying amounts of the assets may not be recoverable. For long-lived assets to be held and used, we base our evaluation on impairment indicators, such as the nature of the assets, the future economic benefits of the assets, any historical or future profitability measurements and other external market conditions or factors that may be present. If such impairment indicators are present or other factors exist that indicate that the carrying amount of an asset may not be recoverable, we determine whether an impairment has occurred through the use of an undiscounted cash flows analysis of the asset at the lowest level for which identifiable cash flows exist. If an impairment has occurred, we recognize a loss for the difference between the carrying amount and the fair value of the asset. For assets held for sale or disposal, the fair value of the asset is measured using fair market value less estimated costs to sell. Assets are classified as held-for-sale when we have a plan for disposal of certain assets and those assets meet the held for sale criteria. Business Acquisitions . We account for business combinations using the acquisition method of accounting, and, in each case, we allocate the acquisition price to the assets acquired and liabilities assumed based on their fair market values as of the date of acquisition. In March 2018, we acquired Ecosse Subsea Limited (“Ecosse”) for $68 million in cash. Headquartered in Aberdeen, Scotland, Ecosse builds and operates tools for seabed preparation, route clearance and trenching for the installation of submarine cables and pipelines. These services are offered on an integrated basis that includes vessels, remotely operated vehicles ("ROVs") and survey services. We have accounted for this acquisition by allocating the purchase price to the assets acquired and liabilities assumed based on their estimated fair values as of the date of acquisition. We have included Ecosse’s operations in our consolidated financial statements starting from the date of closing, and its operating results are reflected in our Subsea Projects segment. Dispositions. In September 2018, we consummated the sale of our cost method investment in ASV Global, LLC for $15 million. The sale resulted in a pre-tax gain of $9.3 million, which is reflected in other income (expense), net in our Consolidated Statements of Operations for the three- and nine-month periods ended September 30, 2018. Goodwill. We evaluate our goodwill annually in December and more frequently, on an interim basis, if events occur or circumstances change that would indicate the carrying amount may be impaired, by performing a qualitative or quantitative impairment test. Under the qualitative approach and after assessing the totality of events or circumstances, if we determine that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, we are required to perform the quantitative analysis to determine the fair value for that reporting unit. In the fourth quarter of 2018, we were required to perform a quantitative analysis for our Subsea Projects Segment and determined that the fair value was less than the carrying value and, as a result, we recorded a pre-tax goodwill impairment loss of $76 million in the Subsea Projects reporting unit. For the remaining reporting units, qualitative assessments were performed; and we concluded that it was more likely than not the fair value of the reporting unit was more than the carrying value of the reporting unit and, therefore, no impairment was required. In addition to our annual evaluation of goodwill for impairment, upon the occurrence of a triggering event, we review our goodwill to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Foreign Currency Translation. The functional currency for several of our foreign subsidiaries is the applicable local currency. Results of operations for foreign subsidiaries with functional currencies other than the U.S. dollar are translated into U.S. dollars using average exchange rates during the period. Assets and liabilities of these foreign subsidiaries are translated into U.S. dollars using the exchange rates in effect as of the balance sheet date, and the resulting translation adjustments are recognized in accumulated other comprehensive income (loss) as a component of shareholders' equity. All foreign currency transaction gains and losses are recognized currently in the Consolidated Statements of Operations. Revenue Recognition. On January 1, 2018, we adopted Accounting Standard Update ("ASU") 2014-09, " Revenue from Contracts with Customers, " which implemented Accounting Standards Codification Topic 606 ("ASC 606"). We applied the modified retrospective method to those contracts that were not completed as of January 1, 2018, and utilized the practical expedient to reflect the effect on contract modifications in the aggregate. The adoption of this ASU resulted in an after-tax cumulative effect adjustment of $0.5 million recorded to retained earnings as of January 1, 2018. All of our revenue is realized through contracts with customers. We recognize our revenue according to the contract type. On a daily basis, we recognize service revenue over time for contracts that provide for specific time, material and equipment charges, which we bill periodically, ranging from weekly to monthly. We use the input method to faithfully depict revenue recognition, because each day of service provided represents value to the customer. The performance obligations in these contracts are satisfied, and revenue is recognized, as the work is performed. We have used the expedient available to recognize revenue when the billing corresponds to the value realized by the customer where appropriate. We account for significant fixed-price contracts, mainly relating to our Subsea Products segment, and to a lesser extent in our Subsea Projects and Advanced Technologies segments, by recognizing revenue over time using an input, cost-to-cost measurement percentage-of-completion method. We use the input cost-to-cost method to faithfully depict revenue recognition. This commonly used method allows appropriate calculation of progress on our contracts. A performance obligation is satisfied as we create a product on behalf of the customer over the life of the contract. The remainder of our revenue is recognized at the point in time when control transfers to the customer, thus satisfying the performance obligation. We have elected to recognize the cost for freight and shipping as an expense when incurred. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, and that are collected by us from customers, are excluded from revenue. In our service-based business lines, which principally charge on a dayrate basis for services provided, there is no significant impact in the pattern of revenue and profit recognition as a result of implementation of ASC 606. In our product-based business lines, we have seen impacts on the pattern of our revenue and profit recognition in our contracts using the percentage-of-completion method, as a result of the requirement to exclude uninstalled materials and significant inefficiencies from the measure of progress. This occurs predominantly in our Subsea Products segment. We apply judgment in the determination and allocation of transaction price to performance obligations, and the subsequent recognition of revenue, based on the facts and circumstances of each contract. We routinely review estimates related to our contracts and, where required, reflect revisions to profitability in earnings immediately. If an element of variable consideration has the potential for a significant future reversal of revenue, we will constrain that variable consideration to a level intended to remove the potential future reversal. If a current estimate of total contract cost indicates an ultimate loss on a contract, we recognize the projected loss in full when we determine it. In prior years, we have recorded adjustments to earnings as a result of revisions to contract estimates; however, we did not have any material adjustments during the nine months ended September 30, 2019 and 2018 . There could be significant adjustments to overall contract costs in the future, due to changes in facts and circumstances. In general, our payment terms consist of those services billed regularly as provided and those products delivered at a point in time, which are invoiced after the performance obligation is satisfied. Our product and service contracts with milestone payments due at agreed progress points during the contract are invoiced when those milestones are reached, which may differ from the timing of revenue recognition. Our payment terms generally do not provide financing of contracts to customers, nor do we receive financing from customers as a result of these terms. See Note 2—"Revenue" for more information on our revenue from contracts with customers. Leases. On January 1, 2019 we adopted ASU 2016-02, " Leases (Topic 842 "), which requires lessees to recognize right-of-use assets ("ROU assets") and lease liabilities for virtually all leases and updates previous accounting standards for lessors to align certain requirements of the new leases standard and the revenue recognition accounting standard. We elected to apply the transition method that allowed us to apply this update at the adoption date and adopted the package of practical expedients that permitted us to retain the identification and classification of leases made under the previously applicable accounting standards. The adoption of this ASU as of January 1, 2019 resulted in a cumulative effect adjustment of $5.9 million recorded to retained earnings, with corresponding adjustments to increase ROU assets and lease liabilities by $185 million and $191 million , respectively. The adoption of this ASU did not materially affect our net earnings and had no impact on cash flows. Comparative information with respect to prior periods has not been retrospectively restated and continues to be reported under the accounting standards in effect for those periods. As a lessee, we utilize the expedients to not recognize leases with an initial lease term of 12 months or less on the balance sheet and to combine lease and non-lease components together and account for the combined component as a lease for all asset classes, except real estate. As a lessor, we lease certain types of equipment along with the provision of services and utilize the expedient allowing us to combine the lease and non-lease components into a combined component that is accounted for under ASC 842 where the lease component is predominant and under ASC 606 where the service component is predominant. In general, wherever we have a service component, this is typically the predominant element and leads to accounting under ASC 606. We determine whether a contract is or contains a lease at inception, whether as a lessee or a lessor. We take into consideration the elements of an identified asset, right to control and the receipt of economic benefit in making these determinations. As a lessee, we lease land, buildings, vessels and equipment for the operation of our business and to support some of our service line revenue streams. These generally carry lease terms that range from days for operational and support equipment to 20 years f or land and buildings. These leases are negotiated on commercial terms at market rates and many carry standard options to extend or terminate at our discretion. When the exercise of those options is reasonably certain, we include them in the lease assessment. Our leases do not contain material restrictions or covenants that impact our accounting for them, nor do we provide residual value guarantees. As a lessor, we lease certain types of equipment, often providing services at the same time. These leases can be priced on a dayrate or lump-sum basis for periods ranging from a few days to multi-year contracts. These leases are negotiated on commercial terms at market rates and many carry standard options to extend or terminate at our customers sole discretion. These leases generally do not contain options to purchase, material restrictions or covenants that impact our accounting for leases. ROU operating lease assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement or modification date. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate, based on the information available at commencement or modification date in determining the present value of future payments. In determining the incremental borrowing rate, we considered our external credit ratings, bond yields for us and our identified peers, the risk-free rate in geographic regions where we operate and the impact associated with providing collateral over a similar term as the lease for an amount equal to the lease payments. Our ROU operating lease assets also include any lease prepayments made and exclude lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. See Note 5—"Leases"—for more information on our operating leases. New Accounting Standards . In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, "Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments," as modified by subsequently issued ASU 2018-19, ASU 2019-04 and ASU 2019-05. The guidance introduces a new credit reserving model known as the Current Expected Credit Loss ("CECL") model, which is based on expected losses, and differs significantly from the incurred loss approach used today. The CECL model requires estimating all expected credit losses for certain types of financial instruments, including trade receivables and contract assets, held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. These ASUs affect an entity to varying degrees depending on the credit quality for the assets held by the entity, their duration and how the entity applies current U.S. GAAP. These ASUs will become effective for us beginning January 1, 2020. We have formed a project team to review these requirements and ensure that we meet the required implementation date. We continue to assess the impact of this guidance and are in the process of pooling our customers by their associated risk factors and evaluating our historical experience associated with credit losses. In August 2017, the FASB issued ASU No. 2017-12 "Derivatives and Hedging (Topic 815): Targeted improvements to Accounting for Hedging Activities," which simplified the application of hedge accounting guidance in current U.S. GAAP and improved the reporting of hedging relationships to better portray the economic results of our risk management activities in our consolidated financial statements. Our adoption of this ASU on January 1, 2019 did not have a material impact on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, "Income Statement – Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the December 2017 enactment of U.S. tax reform legislation commonly referred to as the Tax Cuts and Jobs Act (the "Tax Act"). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. The amendments in this update also require certain disclosures about stranded tax effects. The amendments in this update were effective for us beginning January 1, 2019. This ASU has not had a material effect on 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."

Revenue

Revenue	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue	REVENUE Revenue by Category We recognized revenue, disaggregated by business segment, geographical region, and timing of transfer of goods or services, as follows: Three Months Ended Nine Months Ended (in thousands) Sep 30, 2019 Sep 30, 2018 Jun 30, 2019 Sep 30, 2019 Sep 30, 2018 Business Segment: Energy Services and Products Remotely Operated Vehicles $ 113,101 $ 105,045 $ 120,363 $ 333,810 $ 298,065 Subsea Products 150,836 137,099 138,910 418,590 385,491 Subsea Projects 75,996 104,972 75,104 240,828 239,868 Asset Integrity 59,274 62,346 61,156 181,119 191,056 Total Energy Services and Products 399,207 409,462 395,533 1,174,347 1,114,480 Advanced Technologies 98,440 109,838 100,248 312,967 299,907 Total $ 497,647 $ 519,300 $ 495,781 $ 1,487,314 $ 1,414,387 Three Months Ended Nine Months Ended (in thousands) Sep 30, 2019 Sep 30, 2018 Jun 30, 2019 Sep 30, 2019 Sep 30, 2018 Geographic Operating Areas: Foreign: Africa $ 73,901 $ 51,669 $ 61,390 $ 222,397 $ 168,722 United Kingdom 61,914 56,769 65,058 180,270 153,087 Norway 59,875 51,952 60,252 162,593 142,820 Asia and Australia 42,662 39,764 43,123 127,211 122,158 Brazil 25,404 14,554 23,658 66,825 46,844 Other 14,178 45,898 28,334 63,734 80,348 Total Foreign 277,934 260,606 281,815 823,030 713,979 United States 219,713 258,694 213,966 664,284 700,408 Total $ 497,647 $ 519,300 $ 495,781 $ 1,487,314 $ 1,414,387 Timing of Transfer of Goods or Services: Revenue recognized over time $ 460,029 $ 485,393 $ 455,937 $ 1,377,211 $ 1,297,095 Revenue recognized at a point in time 37,618 33,907 39,844 110,103 117,292 Total $ 497,647 $ 519,300 $ 495,781 $ 1,487,314 $ 1,414,387 Contract Balances Our contracts with milestone payments have, in the aggregate, a significant impact on the contract asset and the contract liability balances. Milestones are contractually agreed with customers and relate to significant events across the contract lives. Some milestones are achieved before revenue is recognized, resulting in a contract liability, while other milestones are achieved after revenue is recognized resulting in a contract asset. Our payment terms consist of those services billed regularly as provided and those products delivered at a point in time, which are invoiced after the performance obligation is satisfied. Our product and service contracts with milestone payments due at agreed progress points during the contract are invoiced when those milestones are reached, which may differ from the timing of revenue recognition. During the nine months ended September 30, 2019 , contract assets decreased by $59 million from the balance at December 31, 2018 , due to the timing of billings of approximately $1,517 million , which exceeded revenue earned of $1,458 million . Contract liabilities increased $10 million from the balance at December 31, 2018 , due to deferrals of milestone payments that totaled $45 million in excess of revenue recognition of $35 million . There were no cancellations, impairments or other significant impacts in the period that relate to other categories of explanation. Performance Obligations Due to the nature of our service contracts in our Remotely Operated Vehicle, Subsea Projects, Asset Integrity and Advanced Technologies segments, the majority of our contracts either have initial contract terms of one year or less or have customer option cancellation clauses that lead us to consider the original expected duration of one year or less. In our Subsea Products and Advanced Technologies segments, we have long-term contracts that extend beyond one year, and these make up the majority of the performance obligations balance reported as of September 30, 2019 . We also have shorter-term product contracts with an expected original duration of one year or less that have been excluded. As of September 30, 2019 , the aggregate amount of the transaction price allocated to remaining performance obligations was $431 million . In arriving at this value, we have used two expedients available to us and are not disclosing amounts in relation to performance obligations: (1) that are part of contracts with an original expected duration of one year or less; or (2) on contracts where we recognize revenue in line with the billing. Of this amount, we expect to recognize revenue of $339 million over the next 12 months. Where appropriate, we have made estimates within the transaction price of elements of variable consideration within the contracts and constrained those amounts to a level where we consider it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. The amount of revenue recognized in the three- and nine-month periods ended September 30, 2019 that was associated with performance obligations completed or partially completed in prior periods was not significant. As of September 30, 2019 , there were no significant outstanding liability balances for refunds or returns due to the nature of our contracts and the services and products we provide. Our warranties are limited to assurance warranties that are of a standard length and are not considered to be a material right . The majority of our contracts consist of a single performance obligation. When there are multiple obligations, we look for observable evidence of stand-alone selling prices on which to base the allocation. This involves judgment as to the appropriateness of the observable evidence relating to the facts and circumstances of the contract. If we do not have observable evidence, we estimate stand-alone selling prices by taking a cost-plus-margin approach, using typical margins from the type of product or service, customer and regional geography involved. Costs to Obtain or Fulfill a Contract In line with the available expedient, we capitalize costs to obtain a contract when those amounts are significant and the contract is expected at inception to exceed one year in duration; otherwise, the costs are expensed in the period when incurred. Costs to obtain a contract primarily consist of bid and proposal costs, which are incremental to our fixed costs. There were no balances or amortization of costs to obtain a contract in the current reporting periods. Costs to fulfill a contract primarily consist of certain mobilization costs incurred to provide services or products to our customers. These costs are deferred and amortized over the period of contract performance. The closing balance of costs to fulfill a contract was $14 million and $13 million as of September 30, 2019 and December 31, 2018, respectively. For the three- and nine-month periods ended September 30, 2019 , $1.9 million and $6.2 million of amortization expense was recorded, respectively. For the three- and nine-month periods ended September 30, 2018 , we recorded amortization expense of $2.6 million and $5.1 million , respectively. No impairment costs were recognized.

Selected Balance Sheet Informat

Selected Balance Sheet Information	9 Months Ended
	Sep. 30, 2019
Balance Sheet Related Disclosures [Abstract]
Selected Balance Sheet Information	SELECTED BALANCE SHEET INFORMATION The following is information regarding selected balance sheet accounts: (in thousands) Sep 30, 2019 Dec 31, 2018 Inventory: Remotely operated vehicle parts and components $ 95,727 $ 108,939 Other inventory, primarily raw materials 103,022 85,568 Total $ 198,749 $ 194,507 Other Current Assets: Prepaid expenses $ 44,488 $ 60,858 Angolan bonds 10,179 10,179 Total $ 54,667 $ 71,037 Accrued Liabilities: Payroll and related costs $ 111,778 $ 114,676 Accrued job costs 55,212 62,281 Income taxes payable 41,555 34,954 Current operating lease liability 19,626 — Other 85,648 95,022 Total $ 313,819 $ 306,933

Debt

Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt	DEBT Long-term debt consisted of the following: (in thousands) Sep 30, 2019 Dec 31, 2018 4.650% Senior Notes due 2024 $ 500,000 $ 500,000 6.000% Senior Notes due 2028 300,000 300,000 Fair value of interest rate swaps on $200 million of principal 6,850 (5,600 ) Unamortized debt issuance costs (6,995 ) (7,820 ) Long-term debt $ 799,855 $ 786,580 In November 2014, we completed the public offering of $500 million aggregate principal amount of 4.650% Senior Notes due 2024 (the "2024 Senior Notes"). We pay interest on the 2024 Senior Notes on May 15 and November 15 of each year. The 2024 Senior Notes are scheduled to mature on November 15, 2024. In February 2018, we completed the public offering of $300 million aggregate principal amount of 6.000% Senior Notes due 2028 (the "2028 Senior Notes"). We pay interest on the 2028 Senior Notes on February 1 and August 1 of each year. The 2028 Senior Notes are scheduled to mature on February 1, 2028. We may redeem some or all of the 2024 Senior Notes and the 2028 Senior Notes (collectively, the "Senior Notes") at specified redemption prices. We used the net proceeds from the 2028 Senior Notes to repay our term loan indebtedness described further below. In October 2014, we entered into a credit agreement (as amended, the "Credit Agreement") with a group of banks. The Credit Agreement initially provided for a $500 million five-year revolving credit facility (the "Revolving Credit Facility"). Subject to certain conditions, the aggregate commitments under the Revolving Credit Facility may be increased by up to $300 million at any time upon agreement between us and existing or additional lenders. Borrowings under the Revolving Credit Facility may be used for general corporate purposes. The Credit Agreement also provided for a $300 million term loan, which we repaid in full in February 2018, using net proceeds from the issuance of our 2028 Senior Notes referred to above, and cash on hand. In February 2018, we entered into Agreement and Amendment No. 4 to the Credit Agreement ("Amendment No. 4"). Amendment No. 4 amended the Credit Agreement to, among other things, extend the maturity of the Revolving Credit Facility to January 25, 2023 with the extending lenders, which represent 90% of the existing commitments of the lenders, such that the total commitments for the Revolving Credit Facility will be $500 million until October 25, 2021, and thereafter $450 million until January 25, 2023. At September 30, 2019 , we had no borrowings outstanding under the Revolving Credit Facility. Borrowings under the Revolving Credit Facility bear interest at an Adjusted Base Rate or the Eurodollar Rate (both as defined in the Credit Agreement), at our option, plus an applicable margin based on our Leverage Ratio (as defined in the Credit Agreement) and, at our election, based on the ratings of our senior unsecured debt by designated ratings services, thereafter to be based on such debt ratings. The applicable margin varies: (1) in the case of advances bearing interest at the Adjusted Base Rate, from 0.125% to 0.750% ; and (2) in the case of advances bearing interest at the Eurodollar Rate, from 1.125% to 1.750% . The Adjusted Base Rate is the highest of (1) the per annum rate established by the administrative agent as its prime rate, (2) the federal funds rate plus 0.50% and (3) the daily one-month LIBOR plus 1% . We pay a commitment fee ranging from 0.125% to 0.300% on the unused portion of the Revolving Credit Facility, depending on our Leverage Ratio. The commitment fees are included as interest expense in our consolidated financial statements. The Credit Agreement contains various covenants that we believe are customary for agreements of this nature, including, but not limited to, restrictions on our ability and the ability of each of our subsidiaries to incur debt, grant liens, make certain investments, make distributions, merge or consolidate, sell assets and enter into certain restrictive agreements. We are also subject to a maximum adjusted total Capitalization Ratio (as defined in the Credit Agreement) of 55% . The Credit Agreement includes customary events of default and associated remedies. As of September 30, 2019 , we were in compliance with all the covenants set forth in the Credit Agreement. We have two interest rate swaps in place on a total of $200 million of the 2024 Senior Notes for the period to November 2024. See Note 6—"Commitments and Contingencies" for more information on our interest rate swaps. We incurred $6.9 million and $4.2 million of issuance costs related to the 2024 Senior Notes and the 2028 Senior Notes, respectively, and $3.0 million

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	LEASES Supplemental information about our operating leases follows: (in thousands) Sep 30, 2019 Jan 1, 2019 Assets: Right-of-use operating lease assets $ 171,952 $ 184,648 Liabilities: Operating Current operating $ 19,626 $ 20,318 Operating Noncurrent operating 162,881 170,190 Lease liabilities $ 182,507 $ 190,508 Sep 30, 2019 Jan 1, 2019 Lease Term and Discount Rate: Weighted-average remaining lease terms (years) Weighted-average remaining lease term (years) 10.0 11.0 Weighted-average discount rate Weighted-average discount rate 5.7 % 7.1 % Operating lease cost reflects the lease expense resulting from amortization over the respective lease terms of our operating leases with initial lease terms greater than 12 months. Our short-term lease cost consists of expense for our operating leases with initial lease terms of 12 months or less that are not recorded on our balance sheet. The components of lease cost are as follows: Three Months Ended Nine Months Ended (in thousands) Sep 30, 2019 Sep 30, 2019 Lease Cost: Operating lease cost Operating lease cost $ 6,396 $ 24,730 Short-term lease cost Short-term lease cost 17,122 60,051 Total Lease Cost $ 23,518 $ 84,781 Future maturities of lease liabilities under all of our operating leases are as follows: (in thousands) For the 12 months ended September 30, 2020 $ 29,900 2021 28,203 2022 27,059 2023 22,301 2024 19,989 Thereafter 123,420 Total lease payments 250,872 Less: Interest (68,365 ) Present Value of Lease Liabilities $ 182,507
Leases	LEASES Supplemental information about our operating leases follows: (in thousands) Sep 30, 2019 Jan 1, 2019 Assets: Right-of-use operating lease assets $ 171,952 $ 184,648 Liabilities: Operating Current operating $ 19,626 $ 20,318 Operating Noncurrent operating 162,881 170,190 Lease liabilities $ 182,507 $ 190,508 Sep 30, 2019 Jan 1, 2019 Lease Term and Discount Rate: Weighted-average remaining lease terms (years) Weighted-average remaining lease term (years) 10.0 11.0 Weighted-average discount rate Weighted-average discount rate 5.7 % 7.1 % Operating lease cost reflects the lease expense resulting from amortization over the respective lease terms of our operating leases with initial lease terms greater than 12 months. Our short-term lease cost consists of expense for our operating leases with initial lease terms of 12 months or less that are not recorded on our balance sheet. The components of lease cost are as follows: Three Months Ended Nine Months Ended (in thousands) Sep 30, 2019 Sep 30, 2019 Lease Cost: Operating lease cost Operating lease cost $ 6,396 $ 24,730 Short-term lease cost Short-term lease cost 17,122 60,051 Total Lease Cost $ 23,518 $ 84,781 Future maturities of lease liabilities under all of our operating leases are as follows: (in thousands) For the 12 months ended September 30, 2020 $ 29,900 2021 28,203 2022 27,059 2023 22,301 2024 19,989 Thereafter 123,420 Total lease payments 250,872 Less: Interest (68,365 ) Present Value of Lease Liabilities $ 182,507

Commitments And Contingencies

Commitments And Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Litigation. In the ordinary course of business, we are, from time to time, involved in litigation or subject to disputes, governmental investigations or claims related to our business activities, including, among other things: • performance- or warranty-related matters under our customer and supplier contracts and other business arrangements; and • workers’ compensation claims, Jones Act claims, occupational hazard claims, premises liability claims and other claims. Although we cannot predict the ultimate outcome of these matters, we believe that our ultimate liability, if any, that may result from these other actions and claims will not have a material adverse effect on our consolidated financial condition, results of operations or cash flows. However, because of the inherent uncertainty of litigation and other dispute resolution proceedings and, in some cases, the availability and amount of potentially available insurance, we can provide no assurance that the resolution of any particular claim or proceeding to which we are a party will not have a material effect on our consolidated financial condition, results of operations or cash flows for the fiscal period in which that resolution occurs. Financial Instruments and Risk Concentration. In the normal course of business, we manage risks associated with foreign exchange rates and interest rates through a variety of strategies, including the use of hedging transactions. As a matter of policy, we do not use derivative instruments unless we have an underlying exposure. Other financial instruments that potentially subject us to concentrations of credit risk are principally cash and cash equivalents and accounts receivable. The carrying values of cash and cash equivalents approximate their fair values due to the short-term maturity of the underlying instruments. Accounts receivable are generated from a broad group of customers, primarily from within the energy industry, which is our major source of revenue. Due to their short-term nature, carrying values of our accounts receivable and accounts payable approximate fair market values. We estimated the aggregate fair market value of the Senior Notes to be $761 million as of September 30, 2019 , based on quoted prices. Since the market for the Senior Notes is not an active market, the fair value of the Senior Notes is classified within Level 2 in the fair value hierarchy under U.S. GAAP (inputs other than quoted prices in active markets for similar assets and liabilities that are observable or can be corroborated by observable market data for substantially the full terms for the assets or liabilities). We have two interest rate swaps in place on a total of $200 million of the 2024 Senior Notes for the period to November 2024. The agreements swap the fixed interest rate of 4.650% on $100 million of the 2024 Senior Notes to the floating rate of one-month LIBOR plus 2.426% and on another $100 million to one-month LIBOR plus 2.823% . We estimate the combined fair value of the interest rate swaps to be a net asset of $6.9 million as of September 30, 2019 , which is included on our balance sheet in other long-term assets. These values were arrived at based on a discounted cash flow model using Level 2 inputs. Since the second quarter of 2015, the exchange rate for the Angolan kwanza relative to the U.S. dollar generally has been declining, with the exception that the exchange rate was relatively stable during 2017. As our functional currency in Angola is the U.S. dollar, we recorded foreign currency transaction losses related to the kwanza of $2.0 million and $4.5 million in the three-month periods ended September 30, 2019 and 2018 , respectively, and $2.6 million and $17 million in the nine-month periods ended September 30, 2019 and 2018 , respectively, as a component of other income (expense), net in our Consolidated Statements of Operations for those respective periods. Our foreign currency transaction losses related primarily to the remeasurement of our Angolan kwanza cash balances to U.S. dollars. Any conversion of cash balances from kwanza to U.S. dollars is controlled by the central bank in Angola, and the central bank slowed this process from mid-2015 to 2017, causing our kwanza cash balances to increase during that period of time. However, beginning in 2018, the Angolan central bank has allowed us to repatriate cash from Angola. As of September 30, 2019 and December 31, 2018, we had the equivalent of approximately $8.4 million and $9.3 million , respectively, of kwanza cash balances in Angola reflected on our Consolidated Balance Sheets. To mitigate our currency exposure risk in Angola, we have used kwanza to purchase equivalent Angolan central bank (Banco Nacional de Angola) bonds. The bonds are denominated as U.S. dollar equivalents, so that, upon payment of semi-annual interest and principal upon maturity, payment is made in kwanza, equivalent to the respective U.S. dollars at the then-current exchange rate. During 2018, we received a total of $70 million in proceeds from maturities and redemptions of Angolan bonds and reinvested $10 million of the proceeds in similar assets. As of September 30, 2019 and December 31, 2018, we have $10 million of Angolan bonds on our Consolidated Balance Sheets. Because we intend to sell the bonds if we are able to repatriate the proceeds, we have classified these bonds as available-for-sale securities, and they are recorded in other current assets on our Consolidated Balance Sheets. We estimated the fair market value of the Angolan bonds to be $10 million as of September 30, 2019 and December 31, 2018 using quoted market prices. Since the market for the Angolan bonds is not an active market, the fair value of the Angolan bonds is classified within Level 2 in the fair value hierarchy under U.S. GAAP. As of September 30, 2019 and December 31, 2018, the difference between the fair market value and the carrying amount of the Angolan bonds was immaterial.

Earnings (Loss) Per Share, Stoc

Earnings (Loss) Per Share, Stock-Based Compensation and Share Repurchase Plan	9 Months Ended
	Sep. 30, 2019
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Abstract]
Earnings (Loss) per Share, Share-based Compensation and Share Repurchase Plan	EARNINGS (LOSS) PER SHARE, SHARE-BASED COMPENSATION AND SHARE REPURCHASE PLAN Earnings (Loss) per Share. For each period presented, the only difference between our calculated weighted-average basic and diluted number of shares outstanding is the effect of outstanding restricted stock units. In periods where we have a net loss, the effect of our outstanding restricted stock units is anti-dilutive, and therefore does not increase our diluted shares outstanding. For each period presented, our net income (loss) allocable to both common shareholders and diluted common shareholders is the same as our net income (loss) in our consolidated statements of operations. Share-Based Compensation. We have no outstanding stock options and, therefore, no share-based compensation to be recognized pursuant to stock option grants. During 2017, 2018 and through September 30, 2019 , we granted restricted units of our common stock to certain of our key executives and employees. During 2017, 2018 and 2019, our Board of Directors granted restricted common stock to our nonemployee directors. The restricted units granted to our key executives and key employees generally vest in full on the third anniversary of the award date, conditional on continued employment. The restricted stock unit grants can vest pro rata over three years , provided the individual meets certain age and years-of-service requirements. The shares of restricted stock we grant to our nonemployee directors vest in full on the first anniversary of the award date, conditional on continued service as a director. Each grantee of shares of restricted stock is deemed to be the record owner of those shares during the restriction period, with the right to vote and receive any dividends on those shares. The restricted stock units outstanding have no voting or dividend rights. For each of the restricted stock units granted in 2017 through September 30, 2019 , at the earlier of three years after grant or at termination of employment or service, the grantee will be issued one share of our common stock for each unit vested. As of September 30, 2019 and December 31, 2018 , respective totals of 1,810,561 and 1,443,897 shares of restricted stock or restricted stock units were outstanding. We estimate that share-based compensation cost not yet recognized related to shares of restricted stock or restricted stock units, based on their grant-date fair values, was $14 million as of September 30, 2019 . This expense is being recognized on a graded-vesting basis over three years for awards attributable to individuals meeting certain age and years-of-service requirements, and on a straight-line basis over the applicable vesting period of one or three years for the other awards. Share Repurchase Plan. In December 2014, our Board of Directors approved a plan to repurchase up to 10 million shares of our common stock. Under this plan, in 2015, we had repurchased 2.0 million shares of our common stock for $100 million . We did no t repurchase any shares during 2016 through September 30, 2019 . We account for the shares we hold in treasury under the cost method, at average cost.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES During interim periods, we provide for income taxes based on our current estimated annual effective tax rate using assumptions as to (1) earnings and other factors that would affect the tax provision for the remainder of the year and (2) the operations of foreign branches and subsidiaries that are subject to local income and withholding taxes. The effective tax rate for the nine months ended September 30, 2019 and September 30, 2018 was different than the federal statutory rate of 21% , primarily due to the geographic mix of operating revenue and results that generated taxes in certain jurisdictions that exceeded the tax benefit from losses and credits in other jurisdictions, which could not be realized in the quarter due to valuation allowances being provided, and other discrete items. It is our intention to continue to indefinitely reinvest in certain of our international operations; therefore, we do not provide for withholding taxes on the possible distribution of these earnings. We do not believe the effective tax rate before discrete items is meaningful due to the ongoing shifting of geographic mix of our operating revenue and results. In the nine-month period ended September 30, 2019 , we recognized additional tax benefit of $1.9 million from discrete items, primarily related to an $8.5 million benefit from adjustment of the mandatory repatriation tax related to the Tax Act, offset by $1.8 million of additional uncertain tax positions, $1.5 million of valuation allowances and $3.3 million associated with various other issues. In the nine-month period ended September 30, 2018 , we recognized additional tax expense of $60 million from discrete items, primarily related to $39 million of valuation allowances on certain deferred tax assets recognized in prior years that may not be realizable in certain foreign jurisdictions, $7.9 million of provisional mandatory repatriation tax related to the Tax Act, $4.8 million related to uncertain tax positions and $8.3 million associated with various other issues. We conduct our international operations in a number of locations that have varying laws and regulations with regard to income and other taxes, some of which are subject to interpretation. We recognize the expense or benefit for a tax position if it is more likely than not to be sustainable upon audit by the applicable taxing authority. If this threshold is met, the tax expense or benefit is then measured and recognized at the largest amount that we believe is greater than 50% likely of being realized upon ultimate settlement. We account for any applicable interest and penalties on uncertain tax positions as a component of our provision for income taxes on our financial statements. Including associated foreign tax credits, penalties and interest, we have accrued a net total of $20 million and $18 million in other long-term liabilities on our balance sheet for unrecognized tax liabilities as of September 30, 2019 and December 31, 2018, respectively. Changes in management's judgment related to those liabilities would affect our effective income tax rate in the periods of change. Our tax returns are subject to audit by taxing authorities in multiple jurisdictions. These audits often take years to complete and settle. The following lists the earliest tax years open to examination by tax authorities where we have significant operations: Jurisdiction Periods United States 2014 United Kingdom 2017 Norway 2015 Angola 2013 Brazil 2014 Australia 2015

Business Segment Information

Business Segment Information	9 Months Ended
	Sep. 30, 2019
Segment Reporting, Measurement Disclosures [Abstract]
Business Segment Information	BUSINESS SEGMENT INFORMATION We are a global provider of engineered services and products, primarily to the offshore energy industry. Through the use of our applied technology expertise, we also serve the defense, aerospace and commercial theme park industries. Our Energy Services and Products business consists of ROVs, Subsea Products, Subsea Projects and Asset Integrity. Our ROV segment provides submersible vehicles operated from the surface to support offshore energy exploration, development and production activities. Our Subsea Products segment supplies a variety of specialty subsea hardware and related services. Our Subsea Projects segment provides multiservice subsea support vessels and offshore diving and support vessel operations, primarily for inspection, maintenance and repair and installation activities. We also provide survey, autonomous underwater vehicle and satellite-positioning services. For the renewable energy markets, we provide seabed preparation, route clearance and trenching services for submarine cables. Our Asset Integrity segment provides asset integrity management and assessment services, nondestructive testing and inspection. Our Advanced Technologies business provides project management, engineering services and equipment for applications in non-energy industries. Unallocated Expenses are those not associated with a specific business segment. These consist of expenses related to our incentive and deferred compensation plans, including restricted stock and bonuses, as well as other general expenses, including corporate administrative expenses. There are no differences in the basis of segmentation or in the basis of measurement of segment profit or loss from those used in our consolidated financial statements for the year ended December 31, 2018 . The table that follows presents Revenue, Income (Loss) from Operations and Depreciation and Amortization by business segment for each of the periods indicated. Three Months Ended Nine Months Ended (in thousands) Sep 30, 2019 Sep 30, 2018 Jun 30, 2019 Sep 30, 2019 Sep 30, 2018 Revenue Energy Services and Products Remotely Operated Vehicles $ 113,101 $ 105,045 $ 120,363 $ 333,810 $ 298,065 Subsea Products 150,836 137,099 138,910 418,590 385,491 Subsea Projects 75,996 104,972 75,104 240,828 239,868 Asset Integrity 59,274 62,346 61,156 181,119 191,056 Total Energy Services and Products 399,207 409,462 395,533 1,174,347 1,114,480 Advanced Technologies 98,440 109,838 100,248 312,967 299,907 Total $ 497,647 $ 519,300 $ 495,781 $ 1,487,314 $ 1,414,387 Income (Loss) from Operations Energy Services and Products Remotely Operated Vehicles $ 10,145 $ 772 $ 8,688 $ 20,251 $ 2,916 Subsea Products 13,219 5,367 7,413 20,156 9,417 Subsea Projects (616 ) 6,088 87 2,363 (6,629 ) Asset Integrity (2,453 ) 2,275 (1,302 ) (4,468 ) 7,311 Total Energy Services and Products 20,295 14,502 14,886 38,302 13,015 Advanced Technologies 2,958 8,960 7,241 19,798 18,514 Unallocated Expenses (28,447 ) (25,014 ) (31,762 ) (94,643 ) (79,867 ) Total $ (5,194 ) $ (1,552 ) $ (9,635 ) $ (36,543 ) $ (48,338 ) Depreciation and Amortization Energy Services and Products Remotely Operated Vehicles $ 26,767 $ 27,428 $ 26,871 $ 81,628 $ 83,339 Subsea Products 12,055 12,349 12,366 37,412 41,288 Subsea Projects 8,130 7,464 7,550 23,562 28,830 Asset Integrity 1,634 1,635 1,570 4,838 5,319 Total Energy Services and Products 48,586 48,876 48,357 147,440 158,776 Advanced Technologies 761 792 765 2,356 2,295 Unallocated Expenses 1,220 1,035 1,182 3,561 3,603 Total $ 50,567 $ 50,703 $ 50,304 $ 153,357 $ 164,674 We determine Income (Loss) from Operations for each business segment before interest income or expense, other income (expense) and provision for income taxes. We do not consider an allocation of these items to be practical. Our equity in earnings (losses) of unconsolidated affiliates is part of our Subsea Projects segment. During the nine-month period ended September 30, 2018 , we recorded write-offs of certain equipment and intangible assets associated with exiting the land survey business and equipment obsolescence of $7.6 million , attributable to our reporting segments as follows: • Remotely Operated Vehicles - $0.6 million ; • Subsea Products - $1.5 million ; and • Subsea Projects - $5.5 million .

Summary Of Major Accounting P_2

Summary Of Major Accounting Policies (Policy)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Cost Method Investments, Policy [Policy Text Block]	Dispositions. In September 2018, we consummated the sale of our cost method investment in ASV Global, LLC for $15 million. The sale resulted in a pre-tax gain of $9.3 million, which is reflected in other income (expense), net in our Consolidated Statements of Operations for the three- and nine-month periods ended September 30, 2018.
Goodwill	Goodwill. We evaluate our goodwill annually in December and more frequently, on an interim basis, if events occur or circumstances change that would indicate the carrying amount may be impaired, by performing a qualitative or quantitative impairment test. Under the qualitative approach and after assessing the totality of events or circumstances, if we determine that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, we are required to perform the quantitative analysis to determine the fair value for that reporting unit. In the fourth quarter of 2018, we were required to perform a quantitative analysis for our Subsea Projects Segment and determined that the fair value was less than the carrying value and, as a result, we recorded a pre-tax goodwill impairment loss of $76 million in the Subsea Projects reporting unit. For the remaining reporting units, qualitative assessments were performed; and we concluded that it was more likely than not the fair value of the reporting unit was more than the carrying value of the reporting unit and, therefore, no impairment was required. In addition to our annual evaluation of goodwill for impairment, upon the occurrence of a triggering event, we review our goodwill to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount.
Basis of Presentation	Basis of Presentation . Oceaneering International, Inc. ("Oceaneering," "we" or "us") has prepared these unaudited consolidated financial statements pursuant to instructions for quarterly reports on Form 10-Q, which we are required to file with the United States Securities and Exchange Commission (the "SEC"). These financial statements do not include all information and footnotes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP"). These financial statements reflect all adjustments that we believe are necessary to present fairly our financial position as of September 30, 2019 and our results of operations and cash flows for the periods presented. Except as otherwise disclosed herein, all such adjustments are of a normal and recurring nature. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in our annual report on Form 10-K for the year ended December 31, 2018 . The results for interim periods are not necessarily indicative of annual results.
Principles of Consolidation	Principles of Consolidation. The consolidated financial statements include the accounts of Oceaneering and our 50% or more owned and controlled subsidiaries. We also consolidate entities that are determined to be variable interest entities if we determine that we are the primary beneficiary; otherwise, we account for those entities using the equity method of accounting. We use the equity method to account for our investments in unconsolidated affiliated companies of which we own an equity interest of between 20% and 50% and as to which we have significant influence, but not control, over operations. We use the cost method for all other long-term investments. Investments in entities that we do not consolidate are reflected on our balance sheet in other noncurrent assets. All significant intercompany accounts and transactions have been eliminated.
Use Of Estimates	Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires that our management make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents. Cash and cash equivalents include demand deposits and highly liquid investments with original maturities of three months or less from the date of investment.
Accounts Receivable	Accounts Receivable – Allowances for Doubtful Accounts. We determine the need for allowances for doubtful accounts using the specific identification method. We generally do not require collateral from our customers.
Inventory	Inventory . Inventory is valued at the lower of cost or net realizable value. We determine cost using the weighted-average method.
Property and Equipment	Property and Equipment and Long-Lived Intangible Assets. We provide for depreciation of assets included in property and equipment on the straight-line method over their estimated useful lives. We charge the costs of repair and maintenance of property and equipment to operations as incurred, while we capitalize the costs of improvements that extend asset lives or functionality. Upon the disposition of property and equipment, the related cost and accumulated depreciation accounts are relieved and any resulting gain or loss is included as an adjustment to cost of services and products. Intangible assets, primarily acquired in connection with business combinations, include trade names, intellectual property and customer relationships and are being amortized over their estimated useful lives. We capitalize interest on assets where the construction period is anticipated to be more than three months. We capitalized no interest and $1.9 million of interest in the three-month periods ended September 30, 2019 and 2018 , respectively, and $3.4 million and $5.3 million of interest in the in the nine-month periods ended September 30, 2019 and 2018 , respectively. We do not allocate general administrative costs to capital projects. Our management periodically, and upon the occurrence of a triggering event, reviews the realizability of our property and equipment and long-lived intangible assets to determine whether any events or changes in circumstances indicate that the carrying amounts of the assets may not be recoverable. For long-lived assets to be held and used, we base our evaluation on impairment indicators, such as the nature of the assets, the future economic benefits of the assets, any historical or future profitability measurements and other external market conditions or factors that may be present. If such impairment indicators are present or other factors exist that indicate that the carrying amount of an asset may not be recoverable, we determine whether an impairment has occurred through the use of an undiscounted cash flows analysis of the asset at the lowest level for which identifiable cash flows exist. If an impairment has occurred, we recognize a loss for the difference between the carrying amount and the fair value of the asset. For assets held for sale or disposal, the fair value of the asset is measured using fair market value less estimated costs to sell. Assets are classified as held-for-sale when we have a plan for disposal of certain assets and those assets meet the held for sale criteria.
Business Acquisitions	Business Acquisitions . We account for business combinations using the acquisition method of accounting, and, in each case, we allocate the acquisition price to the assets acquired and liabilities assumed based on their fair market values as of the date of acquisition. In March 2018, we acquired Ecosse Subsea Limited (“Ecosse”) for $68 million in cash. Headquartered in Aberdeen, Scotland, Ecosse builds and operates tools for seabed preparation, route clearance and trenching for the installation of submarine cables and pipelines. These services are offered on an integrated basis that includes vessels, remotely operated vehicles ("ROVs") and survey services. We have accounted for this acquisition by allocating the purchase price to the assets acquired and liabilities assumed based on their estimated fair values as of the date of acquisition. We have included Ecosse’s operations in our consolidated financial statements starting from the date of closing, and its operating results are reflected in our Subsea Projects segment.
Foreign Currency Translations	Foreign Currency Translation. The functional currency for several of our foreign subsidiaries is the applicable local currency. Results of operations for foreign subsidiaries with functional currencies other than the U.S. dollar are translated into U.S. dollars using average exchange rates during the period. Assets and liabilities of these foreign subsidiaries are translated into U.S. dollars using the exchange rates in effect as of the balance sheet date, and the resulting translation adjustments are recognized in accumulated other comprehensive income (loss) as a component of shareholders' equity. All foreign currency transaction gains and losses are recognized currently in the Consolidated Statements of Operations.
Revenue Recognition	Revenue Recognition. On January 1, 2018, we adopted Accounting Standard Update ("ASU") 2014-09, " Revenue from Contracts with Customers, " which implemented Accounting Standards Codification Topic 606 ("ASC 606"). We applied the modified retrospective method to those contracts that were not completed as of January 1, 2018, and utilized the practical expedient to reflect the effect on contract modifications in the aggregate. The adoption of this ASU resulted in an after-tax cumulative effect adjustment of $0.5 million recorded to retained earnings as of January 1, 2018. All of our revenue is realized through contracts with customers. We recognize our revenue according to the contract type. On a daily basis, we recognize service revenue over time for contracts that provide for specific time, material and equipment charges, which we bill periodically, ranging from weekly to monthly. We use the input method to faithfully depict revenue recognition, because each day of service provided represents value to the customer. The performance obligations in these contracts are satisfied, and revenue is recognized, as the work is performed. We have used the expedient available to recognize revenue when the billing corresponds to the value realized by the customer where appropriate. We account for significant fixed-price contracts, mainly relating to our Subsea Products segment, and to a lesser extent in our Subsea Projects and Advanced Technologies segments, by recognizing revenue over time using an input, cost-to-cost measurement percentage-of-completion method. We use the input cost-to-cost method to faithfully depict revenue recognition. This commonly used method allows appropriate calculation of progress on our contracts. A performance obligation is satisfied as we create a product on behalf of the customer over the life of the contract. The remainder of our revenue is recognized at the point in time when control transfers to the customer, thus satisfying the performance obligation. We have elected to recognize the cost for freight and shipping as an expense when incurred. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, and that are collected by us from customers, are excluded from revenue. In our service-based business lines, which principally charge on a dayrate basis for services provided, there is no significant impact in the pattern of revenue and profit recognition as a result of implementation of ASC 606. In our product-based business lines, we have seen impacts on the pattern of our revenue and profit recognition in our contracts using the percentage-of-completion method, as a result of the requirement to exclude uninstalled materials and significant inefficiencies from the measure of progress. This occurs predominantly in our Subsea Products segment. We apply judgment in the determination and allocation of transaction price to performance obligations, and the subsequent recognition of revenue, based on the facts and circumstances of each contract. We routinely review estimates related to our contracts and, where required, reflect revisions to profitability in earnings immediately. If an element of variable consideration has the potential for a significant future reversal of revenue, we will constrain that variable consideration to a level intended to remove the potential future reversal. If a current estimate of total contract cost indicates an ultimate loss on a contract, we recognize the projected loss in full when we determine it. In prior years, we have recorded adjustments to earnings as a result of revisions to contract estimates; however, we did not have any material adjustments during the nine months ended September 30, 2019 and 2018 . There could be significant adjustments to overall contract costs in the future, due to changes in facts and circumstances. In general, our payment terms consist of those services billed regularly as provided and those products delivered at a point in time, which are invoiced after the performance obligation is satisfied. Our product and service contracts with milestone payments due at agreed progress points during the contract are invoiced when those milestones are reached, which may differ from the timing of revenue recognition. Our payment terms generally do not provide financing of contracts to customers, nor do we receive financing from customers as a result of these terms. See Note 2—"Revenue" for more information on our revenue from contracts with customers.
Leases	On January 1, 2019 we adopted ASU 2016-02, " Leases (Topic 842 "), which requires lessees to recognize right-of-use assets ("ROU assets") and lease liabilities for virtually all leases and updates previous accounting standards for lessors to align certain requirements of the new leases standard and the revenue recognition accounting standard. We elected to apply the transition method that allowed us to apply this update at the adoption date and adopted the package of practical expedients that permitted us to retain the identification and classification of leases made under the previously applicable accounting standards. The adoption of this ASU as of January 1, 2019 resulted in a cumulative effect adjustment of $5.9 million recorded to retained earnings, with corresponding adjustments to increase ROU assets and lease liabilities by $185 million and $191 million , respectively. The adoption of this ASU did not materially affect our net earnings and had no impact on cash flows. Comparative information with respect to prior periods has not been retrospectively restated and continues to be reported under the accounting standards in effect for those periods. As a lessee, we utilize the expedients to not recognize leases with an initial lease term of 12 months or less on the balance sheet and to combine lease and non-lease components together and account for the combined component as a lease for all asset classes, except real estate. As a lessor, we lease certain types of equipment along with the provision of services and utilize the expedient allowing us to combine the lease and non-lease components into a combined component that is accounted for under ASC 842 where the lease component is predominant and under ASC 606 where the service component is predominant. In general, wherever we have a service component, this is typically the predominant element and leads to accounting under ASC 606. We determine whether a contract is or contains a lease at inception, whether as a lessee or a lessor. We take into consideration the elements of an identified asset, right to control and the receipt of economic benefit in making these determinations. As a lessee, we lease land, buildings, vessels and equipment for the operation of our business and to support some of our service line revenue streams. These generally carry lease terms that range from days for operational and support equipment to 20 years f or land and buildings. These leases are negotiated on commercial terms at market rates and many carry standard options to extend or terminate at our discretion. When the exercise of those options is reasonably certain, we include them in the lease assessment. Our leases do not contain material restrictions or covenants that impact our accounting for them, nor do we provide residual value guarantees. As a lessor, we lease certain types of equipment, often providing services at the same time. These leases can be priced on a dayrate or lump-sum basis for periods ranging from a few days to multi-year contracts. These leases are negotiated on commercial terms at market rates and many carry standard options to extend or terminate at our customers sole discretion. These leases generally do not contain options to purchase, material restrictions or covenants that impact our accounting for leases. ROU operating lease assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement or modification date. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate, based on the information available at commencement or modification date in determining the present value of future payments. In determining the incremental borrowing rate, we considered our external credit ratings, bond yields for us and our identified peers, the risk-free rate in geographic regions where we operate and the impact associated with providing collateral over a similar term as the lease for an amount equal to the lease payments. Our ROU operating lease assets also include any lease prepayments made and exclude lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.
New Accounting Standards	New Accounting Standards . In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, "Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments," as modified by subsequently issued ASU 2018-19, ASU 2019-04 and ASU 2019-05. The guidance introduces a new credit reserving model known as the Current Expected Credit Loss ("CECL") model, which is based on expected losses, and differs significantly from the incurred loss approach used today. The CECL model requires estimating all expected credit losses for certain types of financial instruments, including trade receivables and contract assets, held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. These ASUs affect an entity to varying degrees depending on the credit quality for the assets held by the entity, their duration and how the entity applies current U.S. GAAP. These ASUs will become effective for us beginning January 1, 2020. We have formed a project team to review these requirements and ensure that we meet the required implementation date. We continue to assess the impact of this guidance and are in the process of pooling our customers by their associated risk factors and evaluating our historical experience associated with credit losses. In August 2017, the FASB issued ASU No. 2017-12 "Derivatives and Hedging (Topic 815): Targeted improvements to Accounting for Hedging Activities," which simplified the application of hedge accounting guidance in current U.S. GAAP and improved the reporting of hedging relationships to better portray the economic results of our risk management activities in our consolidated financial statements. Our adoption of this ASU on January 1, 2019 did not have a material impact on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, "Income Statement – Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the December 2017 enactment of U.S. tax reform legislation commonly referred to as the Tax Cuts and Jobs Act (the "Tax Act"). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. The amendments in this update also require certain disclosures about stranded tax effects. The amendments in this update were effective for us beginning January 1, 2019. This ASU has not had a material effect on 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."

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from External Customers by Products and Services	evenue, disaggregated by business segment, geographical region, and timing of transfer of goods or services, as follows: Three Months Ended Nine Months Ended (in thousands) Sep 30, 2019 Sep 30, 2018 Jun 30, 2019 Sep 30, 2019 Sep 30, 2018 Business Segment: Energy Services and Products Remotely Operated Vehicles $ 113,101 $ 105,045 $ 120,363 $ 333,810 $ 298,065 Subsea Products 150,836 137,099 138,910 418,590 385,491 Subsea Projects 75,996 104,972 75,104 240,828 239,868 Asset Integrity 59,274 62,346 61,156 181,119 191,056 Total Energy Services and Products 399,207 409,462 395,533 1,174,347 1,114,480 Advanced Technologies 98,440 109,838 100,248 312,967 299,907 Total $ 497,647 $ 519,300 $ 495,781 $ 1,487,314 $ 1,414,387
Revenue from External Customers by Geographic Areas	Three Months Ended Nine Months Ended (in thousands) Sep 30, 2019 Sep 30, 2018 Jun 30, 2019 Sep 30, 2019 Sep 30, 2018 Geographic Operating Areas: Foreign: Africa $ 73,901 $ 51,669 $ 61,390 $ 222,397 $ 168,722 United Kingdom 61,914 56,769 65,058 180,270 153,087 Norway 59,875 51,952 60,252 162,593 142,820 Asia and Australia 42,662 39,764 43,123 127,211 122,158 Brazil 25,404 14,554 23,658 66,825 46,844 Other 14,178 45,898 28,334 63,734 80,348 Total Foreign 277,934 260,606 281,815 823,030 713,979 United States 219,713 258,694 213,966 664,284 700,408 Total $ 497,647 $ 519,300 $ 495,781 $ 1,487,314 $ 1,414,387
Revenue by Timing of Transfer of Goods or Services	Timing of Transfer of Goods or Services: Revenue recognized over time $ 460,029 $ 485,393 $ 455,937 $ 1,377,211 $ 1,297,095 Revenue recognized at a point in time 37,618 33,907 39,844 110,103 117,292 Total $ 497,647 $ 519,300 $ 495,781 $ 1,487,314 $ 1,414,387

Selected Balance Sheet Inform_2

Selected Balance Sheet Information (Tables)	9 Months Ended
	Sep. 30, 2019
Balance Sheet Related Disclosures [Abstract]
Selected Balance Sheet Accounts	The following is information regarding selected balance sheet accounts: (in thousands) Sep 30, 2019 Dec 31, 2018 Inventory: Remotely operated vehicle parts and components $ 95,727 $ 108,939 Other inventory, primarily raw materials 103,022 85,568 Total $ 198,749 $ 194,507 Other Current Assets: Prepaid expenses $ 44,488 $ 60,858 Angolan bonds 10,179 10,179 Total $ 54,667 $ 71,037 Accrued Liabilities: Payroll and related costs $ 111,778 $ 114,676 Accrued job costs 55,212 62,281 Income taxes payable 41,555 34,954 Current operating lease liability 19,626 — Other 85,648 95,022 Total $ 313,819 $ 306,933

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Schedule of Debt	Long-term debt consisted of the following: (in thousands) Sep 30, 2019 Dec 31, 2018 4.650% Senior Notes due 2024 $ 500,000 $ 500,000 6.000% Senior Notes due 2028 300,000 300,000 Fair value of interest rate swaps on $200 million of principal 6,850 (5,600 ) Unamortized debt issuance costs (6,995 ) (7,820 ) Long-term debt $ 799,855 $ 786,580

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Assets And Liabilities, Lessee	(in thousands) Sep 30, 2019 Jan 1, 2019 Assets: Right-of-use operating lease assets $ 171,952 $ 184,648 Liabilities: Operating Current operating $ 19,626 $ 20,318 Operating Noncurrent operating 162,881 170,190 Lease liabilities $ 182,507 $ 190,508
Lessee, Operating Lease, Liability, Maturity	Future maturities of lease liabilities under all of our operating leases are as follows: (in thousands) For the 12 months ended September 30, 2020 $ 29,900 2021 28,203 2022 27,059 2023 22,301 2024 19,989 Thereafter 123,420 Total lease payments 250,872 Less: Interest (68,365 ) Present Value of Lease Liabilities $ 182,507

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Summary of Income Tax Examinations	The following lists the earliest tax years open to examination by tax authorities where we have significant operations: Jurisdiction Periods United States 2014 United Kingdom 2017 Norway 2015 Angola 2013 Brazil 2014 Australia 2015

Business Segment Information (T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting, Measurement Disclosures [Abstract]
Financial Data By Business Segment	The table that follows presents Revenue, Income (Loss) from Operations and Depreciation and Amortization by business segment for each of the periods indicated. Three Months Ended Nine Months Ended (in thousands) Sep 30, 2019 Sep 30, 2018 Jun 30, 2019 Sep 30, 2019 Sep 30, 2018 Revenue Energy Services and Products Remotely Operated Vehicles $ 113,101 $ 105,045 $ 120,363 $ 333,810 $ 298,065 Subsea Products 150,836 137,099 138,910 418,590 385,491 Subsea Projects 75,996 104,972 75,104 240,828 239,868 Asset Integrity 59,274 62,346 61,156 181,119 191,056 Total Energy Services and Products 399,207 409,462 395,533 1,174,347 1,114,480 Advanced Technologies 98,440 109,838 100,248 312,967 299,907 Total $ 497,647 $ 519,300 $ 495,781 $ 1,487,314 $ 1,414,387 Income (Loss) from Operations Energy Services and Products Remotely Operated Vehicles $ 10,145 $ 772 $ 8,688 $ 20,251 $ 2,916 Subsea Products 13,219 5,367 7,413 20,156 9,417 Subsea Projects (616 ) 6,088 87 2,363 (6,629 ) Asset Integrity (2,453 ) 2,275 (1,302 ) (4,468 ) 7,311 Total Energy Services and Products 20,295 14,502 14,886 38,302 13,015 Advanced Technologies 2,958 8,960 7,241 19,798 18,514 Unallocated Expenses (28,447 ) (25,014 ) (31,762 ) (94,643 ) (79,867 ) Total $ (5,194 ) $ (1,552 ) $ (9,635 ) $ (36,543 ) $ (48,338 ) Depreciation and Amortization Energy Services and Products Remotely Operated Vehicles $ 26,767 $ 27,428 $ 26,871 $ 81,628 $ 83,339 Subsea Products 12,055 12,349 12,366 37,412 41,288 Subsea Projects 8,130 7,464 7,550 23,562 28,830 Asset Integrity 1,634 1,635 1,570 4,838 5,319 Total Energy Services and Products 48,586 48,876 48,357 147,440 158,776 Advanced Technologies 761 792 765 2,356 2,295 Unallocated Expenses 1,220 1,035 1,182 3,561 3,603 Total $ 50,567 $ 50,703 $ 50,304 $ 153,357 $ 164,674

Summary Of Major Accounting P_3

Summary Of Major Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019	Jan. 01, 2018
Property, Plant and Equipment [Line Items]
Present Value of Lease Liabilities				$ 182,507		$ 190,508
Lease, term of contract				20 years
Right-of-use operating lease assets				$ 171,952		184,648
Payments to Acquire Businesses, Net of Cash Acquired			$ 68,000	0	$ 68,398
Goodwill, Impairment loss	$ 76,000
Cumulative effect of new accounting principle in period of adoption						(5,860)	$ (537)
Interest costs capitalized		$ 1,900		$ 3,400	$ 5,300
Maximum [Member]
Property, Plant and Equipment [Line Items]
Equity method investment, threshold for consolidation, percentage				50.00%
Minimum [Member]
Property, Plant and Equipment [Line Items]
Threshold for consolidation, percentage				50.00%
Equity method investment, threshold for consolidation, percentage				20.00%
Retained Earnings [Member]
Property, Plant and Equipment [Line Items]
Cumulative effect of new accounting principle in period of adoption						(5,860)	(537)
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]
Property, Plant and Equipment [Line Items]
Cumulative effect of new accounting principle in period of adoption							$ 500
Accounting Standards Update 2016-02 [Member] | Retained Earnings [Member]
Property, Plant and Equipment [Line Items]
Cumulative effect of new accounting principle in period of adoption						$ 5,900

Summary Of Major Accounting P_4

Summary Of Major Accounting Policies Dispositions (Details)	3 Months Ended
	Sep. 30, 2018USD ($)
Dispositions [Abstract]
Proceeds from Sale of Other Investments	$ 15
Realized Gain (Loss) on Marketable Securities, Cost Method Investments, and Other Investments	$ 9.3

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 497,647	$ 495,781	$ 519,300	$ 1,487,314	$ 1,414,387
Remotely Operated Vehicles [Member]
Segment Reporting Information [Line Items]
Revenues	113,101	120,363	105,045	333,810	298,065
Subsea Products [Member]
Segment Reporting Information [Line Items]
Revenues	150,836	138,910	137,099	418,590	385,491
Subsea Projects [Member]
Segment Reporting Information [Line Items]
Revenues	75,996	75,104	104,972	240,828	239,868
Asset Integrity [Member]
Segment Reporting Information [Line Items]
Revenues	59,274	61,156	62,346	181,119	191,056
Oil and Gas [Member]
Segment Reporting Information [Line Items]
Revenues	399,207	395,533	409,462	1,174,347	1,114,480
Advanced Technologies [Member]
Segment Reporting Information [Line Items]
Revenues	$ 98,440	$ 100,248	$ 109,838	$ 312,967	$ 299,907

Revenue - Revenue by Geographic

Revenue - Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue by Geographic Area [Line Items]
Revenues	$ 497,647	$ 495,781	$ 519,300	$ 1,487,314	$ 1,414,387
Africa [Member]
Revenue by Geographic Area [Line Items]
Revenues	73,901	61,390	51,669	222,397	168,722
United Kingdom [Member]
Revenue by Geographic Area [Line Items]
Revenues	61,914	65,058	56,769	180,270	153,087
Norway [Member]
Revenue by Geographic Area [Line Items]
Revenues	59,875	60,252	51,952	162,593	142,820
Asia Pacific [Member]
Revenue by Geographic Area [Line Items]
Revenues	42,662	43,123	39,764	127,211	122,158
Brazil [Member]
Revenue by Geographic Area [Line Items]
Revenues	25,404	23,658	14,554	66,825	46,844
Other Geographical [Member]
Revenue by Geographic Area [Line Items]
Revenues	14,178	28,334	45,898	63,734	80,348
Non-US [Member]
Revenue by Geographic Area [Line Items]
Revenues	277,934	281,815	260,606	823,030	713,979
UNITED STATES
Revenue by Geographic Area [Line Items]
Revenues	$ 219,713	$ 213,966	$ 258,694	$ 664,284	$ 700,408

Revenue - Revenue by Timing of

Revenue - Revenue by Timing of Transfer of Goods or Services (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue recognized over time	$ 460,029	$ 455,937	$ 485,393	$ 1,377,211	$ 1,297,095
Revenue recognized at a point in time	37,618	39,844	33,907	110,103	117,292
Total	$ 497,647	$ 495,781	$ 519,300	$ 1,487,314	$ 1,414,387

Revenue - Contract balances (De

Revenue - Contract balances (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Increase (decrease) in unbilled receivables	$ (59)
Billing for the reporting period	(1,517)
Revenue recognized but unbilled	1,458
Increase or decrease in deferred revenue	10
Revenue recognized	35
Deferrals of customer payments	$ (45)

Revenue - Performance obligatio

Revenue - Performance obligation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Amortization of Other Deferred Charges	$ 1.9	$ 2.6	$ 6.2	$ 5.1
Price allocated to remaining performance obligations	431		431
Revenue recognition for remaining performance obligations	$ 339		$ 339

Revenue - Costs to obtain or fu

Revenue - Costs to obtain or fulfill a contract (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Costs to fulfill a contract	$ 14	$ 13	$ 13

Selected Balance Sheet Inform_3

Selected Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Inventory:
Remotely operated vehicle parts and components	$ 103,022		$ 85,568
Other inventory, primarily raw materials	95,727		108,939
Total	198,749		194,507
Other Current Assets:
Prepaid expenses	44,488		60,858
Angolan bonds	10,179		10,179
Total	54,667		71,037
Accrued Liabilities:
Payroll and related costs	111,778		114,676
Accrued job costs	55,212		62,281
Income taxes payable	41,555		34,954
Current operating lease liability	19,626	$ 20,318	0
Other	85,648		95,022
Total	$ 313,819		$ 306,933

Debt - Schedule of Long-Term De

Debt - Schedule of Long-Term Debt (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018	Feb. 28, 2018	Nov. 30, 2014
Debt Instrument [Line Items]
Fair value of interest rate swaps	$ 6,850,000
Fair Value Hedge Liabilities		$ 5,600,000
Interest rate swap principal	200,000,000	200,000,000
Unamortized debt issuance costs	(6,995,000)	(7,820,000)
Revolving Credit Facility	0	0
Long-term Debt	$ 799,855,000	$ 786,580,000
Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	4.65%	4.65%		4.65%
Senior notes	$ 500,000,000	$ 500,000,000		$ 500,000,000
Interest rate swap principal	$ 200,000,000
Senior Notes due 2028 [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	6.00%	6.00%	6.00%
Senior notes	$ 300,000,000	$ 300,000,000	$ 300,000,000

Debt - Additional Information (

Debt - Additional Information (Details)	1 Months Ended	3 Months Ended	9 Months Ended
	Oct. 31, 2014USD ($)	Dec. 31, 2014USD ($)	Sep. 30, 2019USD ($)derivative_instrument	Dec. 31, 2018USD ($)	Feb. 28, 2018USD ($)	Nov. 30, 2014USD ($)
Line of Credit Facility [Line Items]
Maximum capitalization ratio			55.00%
Number of instruments held | derivative_instrument			2
Interest rate swap principal			$ 200,000,000	$ 200,000,000
Payments of financing costs		$ 3,000,000
Minimum [Member]
Line of Credit Facility [Line Items]
Commitment fee percentage			0.125%
Maximum [Member]
Line of Credit Facility [Line Items]
Commitment fee percentage			0.30%
Senior Notes due 2024 [Member]
Line of Credit Facility [Line Items]
Senior notes			$ 500,000,000	$ 500,000,000		$ 500,000,000
Interest rate, stated percentage			4.65%	4.65%		4.65%
Interest rate swap principal			$ 200,000,000
Payments of debt issuance costs		6,900,000
Senior Notes due 2028 [Member]
Line of Credit Facility [Line Items]
Senior notes			$ 300,000,000	$ 300,000,000	$ 300,000,000
Interest rate, stated percentage			6.00%	6.00%	6.00%
Payments of debt issuance costs		$ 4,200,000
Line of Credit [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 500,000,000
Debt instrument, term	5 years
Available additional borrowing capacity	$ 300,000,000
Face amount	$ 300,000,000
Percent of commitments affected by amendment					90.00%
Line of Credit [Member] | October 25, 2021 [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 500,000,000
Line of Credit [Member] | January 25, 2023 [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 450,000,000
Credit Agreement [Member] | Applicable Margin [Member] | Minimum [Member] | Adjusted Base Rate Advances [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate			0.125%
Credit Agreement [Member] | Applicable Margin [Member] | Minimum [Member] | Eurodollar Advances [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.125%
Credit Agreement [Member] | Applicable Margin [Member] | Maximum [Member] | Adjusted Base Rate Advances [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate			0.75%
Credit Agreement [Member] | Applicable Margin [Member] | Maximum [Member] | Eurodollar Advances [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.75%
Credit Agreement [Member] | Adjusted Base Rate [Member] | Minimum [Member] | Adjusted Base Rate Advances [Member] | Federal Funds Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate			0.50%
Credit Agreement [Member] | Adjusted Base Rate [Member] | Minimum [Member] | Adjusted Base Rate Advances [Member] | Eurodollar Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.00%

Leases - Lessee Disclosure, Bal

Leases - Lessee Disclosure, Balance Sheet Disclosure (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Assets:
Operating lease assets	$ 171,952	$ 184,648
Current
Operating	19,626	20,318	$ 0
Noncurrent
Operating	162,881	170,190
Present Value of Lease Liabilities	$ 182,507	$ 190,508

Leases - Lessee Disclosure, Lea

Leases - Lessee Disclosure, Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Lease Cost:
Operating lease cost	$ 6,396	$ 24,730
Short-term lease cost	17,122	60,051
Total Lease Cost	$ 23,518	$ 84,781

Leases - Lessee Disclosure, L_2

Leases - Lessee Disclosure, Lease Term and Discount Rate (Details)	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Weighted-average remaining lease terms (years)	10 years	11 years
Weighted-average discount rate	5.70%	7.10%

Leases - Lessee Disclosure, Mat

Leases - Lessee Disclosure, Maturity of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Operating Leases
2020	$ 29,900
2021	28,203
2022	27,059
2023	22,301
2024	19,989
Thereafter	123,420
Total lease payments	250,872
Less: Interest	(68,365)
Present Value of Lease Liabilities	$ 182,507	$ 190,508

Commitments And Contingencies -

Commitments And Contingencies - Narrative (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019USD ($)derivative_instrument	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)derivative_instrument	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Loss Contingencies [Line Items]
Notes payable, fair value disclosure	$ 761,000,000		$ 761,000,000
Number of instruments held | derivative_instrument	2		2
Interest rate swap principal	$ 200,000,000		$ 200,000,000		$ 200,000,000
Fair value of interest rate swaps	6,900,000		6,900,000
Proceeds from sale of debt securities					70,000,000
Debt Securities, Available-for-sale	10,000,000		10,000,000		10,000,000
Fair Value, Inputs, Level 2 [Member]
Loss Contingencies [Line Items]
Investments, fair value disclosure	10,000,000		10,000,000		10,000,000
Angola, Kwanza [Member]
Loss Contingencies [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	2,000,000	$ 4,500,000	2,600,000	$ 17,000,000
Cash and cash equivalents	8,400,000		8,400,000		$ 9,300,000
Senior Notes due 2024 [Member]
Loss Contingencies [Line Items]
Interest rate swap principal	$ 200,000,000		$ 200,000,000
Fixed interest rate	4.65%		4.65%
Derivative Liability, Notional Amount	$ 100,000,000		$ 100,000,000
Senior Notes due 2024 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Derivative, variable interest rate	2.426%		2.426%
Senior Notes due 2024 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Derivative, variable interest rate	2.823%		2.823%

Earnings (Loss) Per Share, St_2

Earnings (Loss) Per Share, Stock-Based Compensation and Share Repurchase Plan (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2015	Dec. 31, 2014
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Number outstanding (in shares)	1,810,561	1,443,897
Number of shares authorized to be repurchased (in shares)				10,000,000
Total number of shares repurchased to date (in shares)	0		2,000,000
Total shares repurchased to date, amount			$ 100
Restricted Stock Units (RSUs) [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Compensation cost not yet recognized	$ 14
Restricted Stock Units (RSUs) [Member] | Minimum [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Award vesting period	1 year
Restricted Stock Units (RSUs) [Member] | Maximum [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Award vesting period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award	three years

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Contingency [Line Items]
Tax expense from discrete items	$ 1.9	$ 60
Federal statutory tax rate	21.00%
Probability threshold	50.00%
Liability for Uncertainty in Income Taxes, Noncurrent	$ 20		$ 18

Income Taxes - Summary Of Earli

Income Taxes - Summary Of Earliest Tax Years Open To Examination (Details)	9 Months Ended
	Sep. 30, 2019
United States [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2014
United Kingdom [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2017
Norway [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2015
Angola [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2013
Brazil [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2014
Australia [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2015

Income Taxes Income Tax Reconci

Income Taxes Income Tax Reconciliation Nondeductible Expense Uncertain Tax Position (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 3.3	$ 8.3
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	1.5	39
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Amount	1.8	4.8
Tax Adjustments, Settlements, and Unusual Provisions	1.9	60
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 8.5	$ 7.9

Business Segment Information -

Business Segment Information - Financial Data By Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)			$ 7,600
Revenue	$ 497,647	$ 495,781	519,300	$ 1,487,314	$ 1,414,387
Income (Loss) from Operations	(5,194)	(9,635)	(1,552)	(36,543)	(48,338)
Depreciation and amortization	50,567	50,304	50,703	153,357	164,674
Oil and Gas [Member]
Segment Reporting Information [Line Items]
Revenue	399,207	395,533	409,462	1,174,347	1,114,480
Income (Loss) from Operations	20,295	14,886	14,502	38,302	13,015
Depreciation and amortization	48,586	48,357	48,876	147,440	158,776
Remotely Operated Vehicles [Member]
Segment Reporting Information [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)			600
Revenue	113,101	120,363	105,045	333,810	298,065
Income (Loss) from Operations	10,145	8,688	772	20,251	2,916
Depreciation and amortization	26,767	26,871	27,428	81,628	83,339
Subsea Products [Member]
Segment Reporting Information [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)			1,500
Revenue	150,836	138,910	137,099	418,590	385,491
Income (Loss) from Operations	13,219	7,413	5,367	20,156	9,417
Depreciation and amortization	12,055	12,366	12,349	37,412	41,288
Subsea Projects [Member]
Segment Reporting Information [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)			5,500
Revenue	75,996	75,104	104,972	240,828	239,868
Income (Loss) from Operations	(616)	87	6,088	2,363	(6,629)
Depreciation and amortization	8,130	7,550	7,464	23,562	28,830
Asset Integrity [Member]
Segment Reporting Information [Line Items]
Revenue	59,274	61,156	62,346	181,119	191,056
Income (Loss) from Operations	(2,453)	(1,302)	2,275	(4,468)	7,311
Depreciation and amortization	1,634	1,570	1,635	4,838	5,319
Advanced Technologies [Member]
Segment Reporting Information [Line Items]
Revenue	98,440	100,248	109,838	312,967	299,907
Income (Loss) from Operations	2,958	7,241	8,960	19,798	18,514
Depreciation and amortization	761	765	792	2,356	2,295
Unallocated Expenses [Member]
Segment Reporting Information [Line Items]
Income (Loss) from Operations	(28,447)	(31,762)	(25,014)	(94,643)	(79,867)
Depreciation and amortization	$ 1,220	$ 1,182	$ 1,035	$ 3,561	$ 3,603

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired	$ 68,000	$ 0	$ 68,398

Uncategorized Items - oii10q093

Label	Element	Value
Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (537,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (5,860,000)