UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 
FORM 10-Q


QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period endedSeptemberJune 30, 20202021
OR
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                      to       
Commission File Number: 1-10945

OCEANEERING INTERNATIONAL, INC.
(Exact name of registrant as specified in its charter)
oii-20210630_g1.jpg
Delaware95-2628227
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer Identification No.)
11911 FM 529
Houston,Texas77041
(Address of principal executive offices)(Zip Code)
(713) 329-4500
(Registrant's telephone number, including area code)
Not Applicable
(Former name, former address and former fiscal year, if changed from last report)


Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common stock, par value $0.25 per shareOIINew York Stock Exchange
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.   þ Yes   ¨  No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    þ  Yes   ¨  No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large“large accelerated filer," "accelerated” “accelerated filer," "smaller” “smaller reporting company," and "emerging“emerging growth company"company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerþAccelerated filer¨
Non-accelerated filer¨Smaller reporting company¨
Emerging growth company¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.     
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Yes   þ No
Number of shares of Common Stock outstanding as of October 30, 2020: 99,304,638July 23, 2021: 99,795,438 



Oceaneering International, Inc.
Form 10-Q
Table of Contents
 
Part I  
Item 1.  
Item 2.  
Item 3.  
Item 4.  
Part II
Item 1.  
Item 1A.
Item 6.  Exhibits

1

Table of Contents
PART I – FINANCIAL INFORMATION
 
Item 1.Financial Statements

OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
 
Sep 30, 2020Dec 31, 2019Jun 30, 2021Dec 31, 2020
(in thousands, except share data)(in thousands, except share data)(in thousands, except share data)
(unaudited)(unaudited)
ASSETSASSETSASSETS
Current Assets:Current Assets:Current Assets:
Cash and cash equivalentsCash and cash equivalents$358,777 $373,655 Cash and cash equivalents$456,087 $452,016 
Accounts receivable, netAccounts receivable, net331,617 421,360 Accounts receivable, net334,122 296,214 
Contract assets, netContract assets, net220,760 221,288 Contract assets, net247,162 221,997 
Inventory, netInventory, net148,527 174,744 Inventory, net129,133 141,241 
Other current assetsOther current assets66,139 53,389 Other current assets62,372 58,795 
Total Current AssetsTotal Current Assets1,125,820 1,244,436 Total Current Assets1,228,876 1,170,263 
Property and equipment, at costProperty and equipment, at cost2,418,523 2,622,185 Property and equipment, at cost2,454,678 2,456,602 
Less accumulated depreciationLess accumulated depreciation1,809,097 1,845,653 Less accumulated depreciation1,916,769 1,865,495 
Net property and equipmentNet property and equipment609,426 776,532 Net property and equipment537,909 591,107 
Other Assets:Other Assets:Other Assets:
GoodwillGoodwill34,559 405,079 Goodwill35,042 35,016 
Other noncurrent assetsOther noncurrent assets128,180 151,378 Other noncurrent assets107,714 108,250 
Right-of-use operating lease assetsRight-of-use operating lease assets139,715 163,238 Right-of-use operating lease assets152,008 141,206 
Total other assetsTotal other assets302,454 719,695 Total other assets294,764 284,472 
Total AssetsTotal Assets$2,037,700 $2,740,663 Total Assets$2,061,549 $2,045,842 
LIABILITIES AND EQUITYLIABILITIES AND EQUITYLIABILITIES AND EQUITY
Current Liabilities:Current Liabilities:Current Liabilities:
Accounts payableAccounts payable$96,481 $145,933 Accounts payable$106,778 $94,207 
Accrued liabilitiesAccrued liabilities289,128 337,681 Accrued liabilities310,757 292,863 
Contract liabilitiesContract liabilities45,566 117,342 Contract liabilities61,988 50,046 
Total current liabilitiesTotal current liabilities431,175 600,956 Total current liabilities479,523 437,116 
Long-term debtLong-term debt805,631 796,516 Long-term debt773,423 805,251 
Long-term operating lease liabilitiesLong-term operating lease liabilities154,355 160,988 Long-term operating lease liabilities163,027 156,074 
Other long-term liabilitiesOther long-term liabilities87,120 106,794 Other long-term liabilities82,844 89,244 
Commitments and contingenciesCommitments and contingenciesCommitments and contingencies00
Equity:Equity:Equity:
Common stock, par value $0.25 per share; 360,000,000 shares authorized; 110,834,088 shares issuedCommon stock, par value $0.25 per share; 360,000,000 shares authorized; 110,834,088 shares issued27,709 27,709 Common stock, par value $0.25 per share; 360,000,000 shares authorized; 110,834,088 shares issued27,709 27,709 
Additional paid-in capitalAdditional paid-in capital190,250 207,130 Additional paid-in capital168,002 192,492 
Treasury stock; 11,529,450 and 11,903,252 shares, at cost(660,234)(681,640)
Treasury stock; 11,038,650 and 11,525,725 shares, at costTreasury stock; 11,038,650 and 11,525,725 shares, at cost(632,129)(660,021)
Retained earningsRetained earnings1,376,220 1,850,244 Retained earnings1,348,096 1,351,220 
Accumulated other comprehensive lossAccumulated other comprehensive loss(380,589)(334,097)Accumulated other comprehensive loss(355,009)(359,306)
Oceaneering shareholders' equityOceaneering shareholders' equity553,356 1,069,346 Oceaneering shareholders' equity556,669 552,094 
Noncontrolling interest Noncontrolling interest6,063 6,063 Noncontrolling interest6,063 6,063 
Total equity Total equity559,419 1,075,409 Total equity562,732 558,157 
Total Liabilities and EquityTotal Liabilities and Equity$2,037,700 $2,740,663 Total Liabilities and Equity$2,061,549 $2,045,842 

The accompanying Notes are an integral part of these Consolidated Financial Statements.
21

Table of Contents
OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(unaudited)
 
Three Months Ended September 30,Nine Months Ended September 30,Three Months Ended June 30,Six Months Ended June 30,
(in thousands, except per share data)(in thousands, except per share data)2020201920202019(in thousands, except per share data)2021202020212020
RevenueRevenue$439,743 $497,647 $1,403,627 $1,487,314 Revenue$498,199 $427,216 $935,752 $963,884 
Cost of services and productsCost of services and products410,092 448,586 1,284,687 1,368,683 Cost of services and products429,802 384,679 810,698 874,595 
Gross margin29,651 49,061 118,940 118,631 Gross margin68,397 42,537 125,054 89,289 
Selling, general and administrative expenseSelling, general and administrative expense49,396 54,255 152,856 155,174 Selling, general and administrative expense45,578 47,719 88,452 103,460 
Long-lived assets impairmentsLong-lived assets impairments68,763 Long-lived assets impairments68,763 
Goodwill impairmentGoodwill impairment40,875 343,880 Goodwill impairment303,005 
Income (loss) from operations(60,620)(5,194)(446,559)(36,543)Income (loss) from operations22,819 (5,182)36,602 (385,939)
Interest incomeInterest income414 2,089 2,202 6,541 Interest income683 511 1,202 1,788 
Interest expense, net of amounts capitalizedInterest expense, net of amounts capitalized(9,250)(11,382)(33,323)(31,005)Interest expense, net of amounts capitalized(9,729)(11,611)(20,136)(24,073)
Equity in income (losses) of unconsolidated affiliatesEquity in income (losses) of unconsolidated affiliates131 554 2,002 390 Equity in income (losses) of unconsolidated affiliates378 674 912 1,871 
Other income (expense), netOther income (expense), net(2,836)(3,660)(13,624)(2,934)Other income (expense), net(1,955)(3,660)(3,408)(10,788)
Income (loss) before income taxes(72,161)(17,593)(489,302)(63,551)Income (loss) before income taxes12,196 (19,268)15,172 (417,141)
Provision (benefit) for income taxesProvision (benefit) for income taxes7,204 7,930 (17,551)21,981 Provision (benefit) for income taxes5,955 5,520 18,296 (24,755)
Net Income (Loss)$(79,365)$(25,523)$(471,751)$(85,532)Net Income (Loss)$6,241 $(24,788)$(3,124)$(392,386)
Weighted-average shares outstandingWeighted-average shares outstandingWeighted-average shares outstanding
Basic Basic99,297 98,930 99,209 98,858 Basic99,762 99,273 99,613 99,164 
Diluted Diluted99,297 98,930 99,209 98,858 Diluted100,847 99,273 99,613 99,164 
Earnings (loss) per shareEarnings (loss) per shareEarnings (loss) per share
Basic Basic$(0.80)$(0.26)$(4.76)$(0.87)Basic$0.06 $(0.25)$(0.03)$(3.96)
Diluted Diluted$(0.80)$(0.26)$(4.76)$(0.87)Diluted$0.06 $(0.25)$(0.03)$(3.96)

The accompanying Notes are an integral part of these Consolidated Financial Statements.

2

Table of Contents

OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(unaudited)
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2021202020212020
Net income (loss)$6,241 $(24,788)$(3,124)$(392,386)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments6,468 10,629 3,612 (59,696)
Change in unrealized gains for available-for-sale debt securities (1)
(369)685 
Total other comprehensive income (loss)6,099 10,629 4,297 (59,696)
Comprehensive income (loss)$12,340 $(14,159)$1,173 $(452,082)
(1)There is no income tax expense associated with the three and six months ended June 30, 2021 due to reversal of a valuation allowance.

The accompanying Notes are an integral part of these Consolidated Financial Statements.

3

Table of Contents

OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)CASH FLOWS
(unaudited)
Three Months Ended September 30,Nine Months Ended September 30, Six Months Ended June 30,
(in thousands)(in thousands)2020201920202019(in thousands)20212020
Cash Flows from Operating Activities:Cash Flows from Operating Activities:
Net income (loss)Net income (loss)$(79,365)$(25,523)$(471,751)$(85,532)Net income (loss)$(3,124)$(392,386)
Other Comprehensive Income (Loss):
Adjustments to reconcile net income (loss) to net cash provided by operating activities:Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization, including goodwill impairmentDepreciation and amortization, including goodwill impairment71,696 394,894 
Loss on impairment of long-lived assetsLoss on impairment of long-lived assets68,763 
Deferred income tax provision (benefit)Deferred income tax provision (benefit)(4,272)(8,528)
Net loss (gain) on sales of property and equipment and otherNet loss (gain) on sales of property and equipment and other1,861 621 
Noncash compensationNoncash compensation5,187 6,303 
Noncash impact of lease accountingNoncash impact of lease accounting(4,435)(2,981)
Excluding the effects of acquisitions, increase (decrease) in cash from:Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable and contract assetsAccounts receivable and contract assets(63,072)63,724 
InventoryInventory12,107 14,297 
Proceeds from interest rate swapsProceeds from interest rate swaps12,840 
Other operating assetsOther operating assets(9,363)(1,061)
Currency translation effect on working capital, excluding cashCurrency translation effect on working capital, excluding cash2,768 (2,508)
Current liabilitiesCurrent liabilities41,820 (135,019)
Other operating liabilitiesOther operating liabilities(2,350)(13,591)
Total adjustments to net income (loss)Total adjustments to net income (loss)51,947 397,754 
Net Cash Provided by (Used in) Operating ActivitiesNet Cash Provided by (Used in) Operating Activities48,823 5,368 
Cash Flows from Investing Activities:Cash Flows from Investing Activities:
Purchases of property and equipmentPurchases of property and equipment(23,328)(37,860)
Proceeds from redemption of investments in Angolan bondsProceeds from redemption of investments in Angolan bonds4,486 
Distributions of capital from unconsolidated affiliatesDistributions of capital from unconsolidated affiliates1,612 1,206 
Proceeds from sale of property and equipmentProceeds from sale of property and equipment3,916 1,337 
Other investing activitiesOther investing activities1,157 
Net Cash Provided by (Used in) Investing ActivitiesNet Cash Provided by (Used in) Investing Activities(12,157)(35,317)
Cash Flows from Financing Activities:Cash Flows from Financing Activities:
Foreign currency translation adjustments13,204 (33,159)(46,492)(26,710)
Total other comprehensive income (loss)13,204 (33,159)(46,492)(26,710)
Comprehensive income (loss)$(66,161)$(58,682)$(518,243)$(112,242)
Repurchase of 2024 Senior NotesRepurchase of 2024 Senior Notes(30,500)— 
Other financing activitiesOther financing activities(1,784)(1,947)
Net Cash Provided by (Used in) Financing ActivitiesNet Cash Provided by (Used in) Financing Activities(32,284)(1,947)
Effect of exchange rates on cashEffect of exchange rates on cash(311)(8,250)
Net Increase (Decrease) in Cash and Cash EquivalentsNet Increase (Decrease) in Cash and Cash Equivalents4,071 (40,146)
Cash and Cash Equivalents—Beginning of PeriodCash and Cash Equivalents—Beginning of Period452,016 373,655 
Cash and Cash Equivalents—End of PeriodCash and Cash Equivalents—End of Period$456,087 $333,509 

The accompanying Notes are an integral part of these Consolidated Financial Statements.


4

Table of Contents
OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWSEQUITY
(unaudited)
 Nine Months Ended September 30,
(in thousands)20202019
Cash Flows from Operating Activities:
Net income (loss)$(471,751)$(85,532)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization, including goodwill impairment482,445 153,357 
Loss on impairment of long-lived assets68,763 
Deferred income tax provision (benefit)(8,211)(8,171)
Inventory write-downs7,038 
Net loss (gain) on sales of property and equipment and cost method investment1,597 (4,935)
Noncash compensation6,252 8,202 
Noncash impact of lease accounting(1,838)
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable and contract assets87,999 51,629 
Inventory19,179 (10,765)
Proceeds from interest rate swaps12,840 
Other operating assets(4,639)16,502 
Currency translation effect on working capital, excluding cash3,256 (4,375)
Current liabilities(158,496)(340)
Other operating liabilities(12,071)(3,405)
Total adjustments to net income (loss)504,114 197,699 
Net Cash Provided by (Used in) Operating Activities32,363 112,167 
Cash Flows from Investing Activities:
Purchases of property and equipment(45,840)(128,847)
Distributions of capital from unconsolidated affiliates5,374 2,395 
Proceeds from sale of property and equipment1,752 6,406 
Net Cash Provided by (Used in) Investing Activities(38,714)(120,046)
Cash Flows from Financing Activities:
Other financing activities(1,725)(2,320)
Net Cash Provided by (Used in) Financing Activities(1,725)(2,320)
Effect of exchange rates on cash(6,802)(3,737)
Net Increase (Decrease) in Cash and Cash Equivalents(14,878)(13,936)
Cash and Cash Equivalents—Beginning of Period373,655 354,259 
Cash and Cash Equivalents—End of Period$358,777 $340,323 
   
Common StockAdditional
Paid-in
Capital
Treasury
Stock
Retained
Earnings
Accumulated Other Comprehensive Income
(Loss)
Oceaneering Shareholders' EquityNon-controlling InterestTotal Equity
(in thousands)
Balance, December 31, 2020$27,709 $192,492 $(660,021)$1,351,220 $(359,306)$552,094 $6,063 $558,157 
Net income (loss)— — — (9,365)— (9,365)— (9,365)
Other comprehensive income (loss)— — — — (1,802)(1,802)— (1,802)
Restricted stock unit activity— (13,642)14,997 — — 1,355 — 1,355 
Restricted stock activity— (10,439)10,439 — — — — 
Balance, March 31, 202127,709 168,411 (634,585)1,341,855 (361,108)542,282 6,063 548,345 
Net income (loss)— — — 6,241 — 6,241 — 6,241 
Other comprehensive income (loss)— — — — 6,099 6,099 — 6,099 
Restricted stock unit activity— (409)2,456 — — 2,047 — 2,047 
Balance, June 30, 2021$27,709 $168,002 $(632,129)$1,348,096 $(355,009)$556,669 $6,063 $562,732 
Common StockAdditional
Paid-in
Capital
Treasury
Stock
Retained
Earnings
Accumulated Other Comprehensive Income
(Loss)
Oceaneering Shareholders' EquityNon-controlling InterestTotal Equity
(in thousands)
Balance, December 31, 2019$27,709 $207,130 $(681,640)$1,850,244 $(334,097)$1,069,346 $6,063 $1,075,409 
Cumulative effect of ASC 326 adoption— — — (2,273)— (2,273)— (2,273)
Net income (loss)— — — (367,598)— (367,598)— (367,598)
Other comprehensive income (loss)— — — — (70,325)(70,325)— (70,325)
Restricted stock unit activity— (11,816)13,262 — — 1,446 — 1,446 
Restricted stock activity— (5,992)5,992 — — — — — 
Balance, March 31, 202027,709 189,322 (662,386)1,480,373 (404,422)630,596 6,063 636,659 
Net income (loss)— — — (24,788)— (24,788)(24,788)
Other comprehensive income (loss)— — — — 10,629 10,629 10,629 
Restricted stock unit activity— 1,790 1,119 — — 2,909 2,909 
Balance, June 30, 2020$27,709 $191,112 $(661,267)$1,455,585 $(393,793)$619,346 $6,063 $625,409 

The accompanying Notes are an integral part of these Consolidated Financial Statements.


5

Table of Contents
OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF EQUITY
(unaudited)
   
Common StockAdditional
Paid-in
Capital
Treasury
Stock
Retained
Earnings
Accumulated Other Comprehensive Income (Loss)Oceaneering Shareholders' EquityNon-controlling InterestTotal Equity
(in thousands)
Balance, December 31, 2019$27,709 $207,130 $(681,640)$1,850,244 $(334,097)$1,069,346 $6,063 $1,075,409 
Cumulative effect of ASC 326 adoption— — — (2,273)— (2,273)— (2,273)
Net income (loss)— — — (367,598)— (367,598)— (367,598)
Other comprehensive income (loss) currency translation adjustments— — — — (70,325)(70,325)— (70,325)
Restricted stock unit activity— (11,816)13,262 — — 1,446 — 1,446 
Restricted stock activity— (5,992)5,992 — — — 
Balance, March 31, 202027,709 189,322 (662,386)1,480,373 (404,422)630,596 6,063 636,659 
Net income (loss)— — — (24,788)— (24,788)— (24,788)
Other comprehensive income (loss) currency translation adjustments— — — — 10,629 10,629 — 10,629 
Restricted stock unit activity— 1,790 1,119 — — 2,909 — 2,909 
Balance, June 30, 202027,709 191,112 (661,267)1,455,585 (393,793)619,346 6,063 625,409 
Net income (loss)— — — (79,365)— (79,365)— (79,365)
Other comprehensive income (loss) currency translation adjustments— — — — 13,204 13,204 — 13,204 
Restricted stock unit activity— (862)1,033 — — 171 — 171 
Balance, September 30, 2020$27,709 $190,250 $(660,234)$1,376,220 (380,589)$553,356 $6,063 $559,419 
Common StockAdditional
Paid-in
Capital
Treasury
Stock
Retained
Earnings
Accumulated Other Comprehensive Income (Loss)Oceaneering Shareholders' EquityNon-controlling InterestTotal Equity
(in thousands)
Balance, December 31, 2018$27,709 $220,421 $(704,066)$2,204,548 $(339,377)$1,409,235 $6,063 $1,415,298 
Cumulative effect of ASC 842 adoption— — — (5,860)— (5,860)— (5,860)
Net income (loss)— — — (24,827)— (24,827)— (24,827)
Other comprehensive income (loss) currency translation adjustments— — — — 6,246 6,246 — 6,246 
Restricted stock unit activity— (16,494)17,137 — — 643 — 643 
Restricted stock activity— (5,143)5,143 — — — 
Balance, March 31, 201927,709 198,784 (681,786)2,173,861 (333,131)1,385,437 6,063 1,391,500 
Net income (loss)— — — (35,182)— (35,182)— (35,182)
Other comprehensive income (loss) currency translation adjustments— — — — 203 203 — 203 
Restricted stock unit activity— 2,443 69 — — 2,512 — 2,512 
Balance, June 30, 201927,709 201,227 (681,717)2,138,679 (332,928)1,352,970 6,063 1,359,033 
Net income (loss)— — — (25,523)— (25,523)— (25,523)
Other comprehensive income (loss) currency translation adjustments— — — — (33,159)(33,159)— (33,159)
Restricted stock unit activity— 2,728 — — — 2,728 — 2,728 
Balance, September 30, 2019$27,709 $203,955 $(681,717)$2,113,156 $(366,087)$1,297,016 $6,063 $1,303,079 

The accompanying Notes are an integral part of these Consolidated Financial Statements.
6

Table of Contents
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.    SUMMARY OF MAJOR ACCOUNTING POLICIES

Basis of Presentation. Oceaneering International, Inc. ("(“Oceaneering," "we"” “we” or "us"“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"“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"GAAP”). These financial statements reflect all adjustments that we believe are necessary to present fairly our financial position as of SeptemberJune 30, 20202021 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, 2019.2020. 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.
Recasting of Certain Prior Period Information. In the third quarter of 2020, we changed our organizational structure as part of the transformation to realign our businesses to achieve greater cost efficiencies.efficiencies and to bring together business units that frequently work together and promote increased synergies in bidding, project management and the use of offshore technicians. As a result, information that our chief operating decision maker regularly reviews changed. Therefore, for the three- and nine-monthsix-month periods ended SeptemberJune 30, 2020,2021, we are reporting our financial results consistent with our newly realigned operating segments and have recast certain prior period amounts to conform to the way we now manage our businesses and monitor segment performance as described in Note 3–"Revenue"“Revenue” and Note 10–"Business Segment Information." We also changed our reporting units to realign with the changes in our operating segments and reassessed impairments for long-lived assets and goodwill as described in Note 4–"Impairments."

Reclassifications. Certain amounts from prior periods have been reclassified to conform with the current year
presentation.
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.
Allowances for Credit Loss—Financial Assets Measured at Amortized Costs. On January 1, 2020, we adopted Accounting Standard Update ("ASU") No. 2016-13,"Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments," as amended ("ASC 326"), which introduces a new credit reserving methodology known as the Current Expected Credit Loss ("CECL") model. The CECL model applies to financial assets measured at amortized costs, including accounts receivable, contract assets and held-to-maturity loan receivables. Under the CECL model, weWe identify allowances for credit loss based on future expected losses when accounts receivable, contract assets or held-to-maturity loan receivables are created rather than when losses are probable.
We use the loss-rate method in developing the allowance for credit losses, which involves identifying pools of assets with similar risk characteristics, reviewing historical losses within the last five years and consideration of reasonable supportable forecasts of economic indicators. Changes in estimates, developing trends and other new information could have material effects on future evaluations.
We monitor the credit quality of our accounts receivable and other financing receivable amounts by frequent customer interaction, following economic and industry trends and reviewing specific customer data. Our other receivable amounts include contract assets and held-to-maturity loans receivable, which we consider to have a low risk of loss.
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We are monitoring the impacts from the coronavirus (COVID-19) outbreak and volatility in the oil and natural gas markets on our customers and various counterparties. We have considered the current and expected economic and market conditions, as a result of COVID-19, in determining credit loss expense for the three- and nine-monthsix-month periods ended SeptemberJune 30, 2021 and 2020.
As a result of the adoption of ASC 326, we recorded a cumulative-effect adjustment of $2.3 million as of January 1, 2020, which decreased retained earnings and increased the allowance for credit losses. We adopted ASC 326 using the modified retrospective method. Prior periods were not restated. We had an allowance for doubtful accounts of $7.5 million as of December 31, 2019, which we determined using the specific identification method, in accordance with previously applicable U.S. GAAP. As of SeptemberJune 30, 2020,2021, our allowance for credit losses was $9.2$1.6 million for accounts receivable and $0.6$0.9 million for other receivables.
Financial assets are written off when deemed uncollectible and there is no reasonable expectation of recovering the contractual cash flows. During the three- and nine-monthsix-month periods ended SeptemberJune 30, 2020,2021, we wrote off accounts receivable of $5.3$0.7 million and $3.1 million, respectively, that previously had been reserved.
We have elected to apply the practical expedient available under Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” as amended, (“ASC 326326”) to exclude the accrued interest receivable balance that is included in our held-to-maturity loans receivable. The amount excluded as of SeptemberJune 30, 20202021 was $1.6$1.3 million.
Accounts receivable are considered to be past-due after the end of the contractual terms agreed to with the customer. There were no material past-due amounts that we consider uncollectible for our financial assets as of SeptemberJune 30, 2020.2021. We generally do not require collateral from our customers.
See Note 2—"Accounting Standards Update"—for more information on our adoption of our adoption of ASC 326.
Inventory. Inventory is valued at the lower of cost or net realizable value. We determine cost using the weighted-average method. We periodically review the value of items in inventory and record write-downs or write-offs of inventory based on our assessment of market conditions. Write-downs and write-offs are charged to cost of services and products. We did not record any write-downs or write-offs of inventory in the three- and six-month periods ended June 30, 2021 and 2020.

Property and Equipment, Long-Lived Intangible Assets and Right-of-Use Operating Lease 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, whileand 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.
We capitalize interest on assets where the construction period is anticipated to be more than three months. We did not capitalize interest in the three- and six-month periods ended June 30, 2021 and 2020. We do not allocate general administrative costs to capital projects.
Long-lived intangible assets, primarily acquired in connection with business combinations, include trade names, intellectual property and customer relationships and are being amortized over their respective estimated useful lives.
Right-of-use operating lease assets are recognized, in each case, 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 peer companies, 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 future lease payments. Our right-of-use 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.
We capitalize interest on assets where the construction period is anticipated to be more than three months. We capitalized no interest in the three- and nine-month periods ended September 30, 2020 and $1.4 million and $3.4 million of interest in the three- and nine-month periods ended September 30, 2019, 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, long-lived intangible assets and right-of-use operating lease 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
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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 by utilizationthrough 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 additional information regarding write-downs and write-offs of property and equipment, long-lived intangible assets and right-of-use operating lease assets in the three monthssix-month period ended March 31,June 30, 2020, see Note 4—"Impairments"“Impairments” and Note 10—"Business Segment Information."” We did not identify indicators of impairment for property and equipment, long-lived intangible assets and right-of-use operating lease assets for the three- and six-month periods ended June 30, 2021 or the three-month period ended June 30, 2020.
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.
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For additional information regarding right-of-use operating lease assets, see “Leases” below.
Goodwill. Our goodwill is evaluated for impairment annually and whenever we identify certain triggering events or circumstances that would more likely than not reduce the fair value of a reporting unit below its carrying amount.
In our annual evaluation of goodwill, we perform a qualitative or quantitative impairment test. Under the qualitative approach, 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 the reporting unit. We then compare the fair value of the reporting unit with its carrying amount and recognize an impairment loss for the amount by which the carrying amount exceeds the fair value of the reporting unit. The loss recognized should not exceed the total amount of goodwill allocated to the reporting unit. We also consider income tax effects from any tax-deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. For additional information regarding impairments of goodwill induring the three monthsthree-month period ended March 31, 2020, and September 30, 2020, see Note 4—"Impairments"“Impairments” and Note 10—"Business Segment Information."” We did not identify indicators of impairment for goodwill for the three- and six-month periods ended June 30, 2021 or the three-month period ended June 30, 2020.
Foreign Currency Translation. The functional currency for severalmost 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, net of tax, 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. We recorded $(1.8) million and $(3.7) million of foreign currency transaction gains (losses) in the three- and six-month periods ended June 30, 2021, respectively. We recorded $(3.9) million and $(11) million of foreign currency transaction gains (losses) in the three- and six-month periods ended June 30, 2020, respectively. Those amounts are included as a component of other income (expense), net in our Consolidated Statement of Operations.

Revenue Recognition. All 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 thean input method to faithfully depictrecognize 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 usedWhen appropriate, we apply the practical expedient available to recognize revenue for the amount invoiced when the billinginvoice corresponds directly to the value realized by the customer where appropriate.of our performance to date.
We account for significant fixed-price contracts, mainly relating to our Manufactured Products segment, and to a lesser extent in our Offshore Projects Group (“OPG”) and Aerospace and Defense Technologies (“ADTech”) 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, we principally charge on a dayrate basis for services provided. In our product-based business lines, predominantly in our Manufactured Products segment, we recognize revenue and profit using the percentage-of-completion method and exclude uninstalled materials and significant inefficiencies from the measure of progress.

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
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estimates related to our contracts and, when 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,
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During the three- and six-month periods ended June 30, 2021, we have recorded adjustments to earnings asrecognized a resultprojected loss of revisions to$1.5 million for a contract estimates; however, wein our Subsea Robotics segment. We did not have any material adjustments during the nine monthsthree- and six-month periods ended SeptemberJune 30, 2020 and 2019.2020. 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 3—"Revenue"“Revenue” for more information on our revenue from contracts with customers.

Leases. Effective as of January 1, 2019, we adopted ASU 2016-02, "Leases (Topic 842") ("ASC 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 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.
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 those determinations.
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 (1) under Leases” (ASC 842,842”), when the lease component is predominant, and (2) under the accounting standard "Revenue from Contracts with Customers" ("” (“ASC 606"606”), when the service component is predominant. In general, when we have a service component, it is typically the predominant element and leads to accounting under ASC 606.
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 customer's discretion. These leases generally do not contain options to purchase, material restrictions or covenants that impact our accounting for leases.
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 15 years for 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 lessee, we utilize the practical 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.
Right-of-use 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 future lease payments. Our right-of-use operating lease assets
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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 4—"Impairments" for more information on determination of impairment indicators for our right-of-use assets.

2.    ACCOUNTING STANDARDS UPDATE

Recently Adopted Accounting Standards. On January 1, 2020,2021, we adopted ASC 326, which introduces a new credit reserving model known as the CECL model. The adoption of ASC 326 did not materially affect our net earnings and had no impact on our 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.
In August 2018, the Financial Accounting Standards Board (the "FASB"Update (“ASU”) issued ASU 2018-13, “Changes to the Disclosure Requirements for Fair Value Measurement” ("ASU 2018-13"). This standard eliminated the prior requirement to disclose the amount or reason for transfers between level 1 and level 2 of the fair value hierarchy and the requirement to disclose the valuation methodology for level 3 fair value measurements. The standard added disclosure requirements for level 3 fair value measurements, including the requirement to disclose the changes in unrealized gains and losses in other comprehensive income during the period and the disclosure of other relevant quantitative information for certain unobservable inputs. The adoption of ASU 2018-13 on January 1, 2020, did not have a material impact on our disclosures.
Recently Issued Accounting Standards. In December 2019, the FASB issued ASU No. 2019-12, "Simplifying the Accounting for Income Taxes"Taxes (“ASU 2019-12”), which simplifies the accounting for income taxes, eliminates certain exceptions within Accounting Standards Codification 740 (“ASC 740, "740”), “Income TaxeTaxess,",” and clarifies certain aspects of the current guidance to promote consistency among reporting entities. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020. Most amendments within the standard are required to be applied on a prospective basis, while certain amendments must be applied on a retrospective or modified retrospective basis. We are evaluating the impact and doOur adoption of ASU 2019-12 on January 1, 2021, did not expect this ASU to have a material impact on our consolidated financial statements.
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Recently Issued Accounting Standards. In March 2020, the FASBFinancial Accounting Standards Board issued ASU No. 2020-04, "Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting",” which provides temporary optional expedients and exceptions to existing guidance on applying contract modifications and hedge accounting to facilitate the market transition from existing reference rates, such as the London Interbank Offered Rate (“LIBOR”), which is scheduled to be phased out in 2021,June 2023, to alternate rates such as the Secured Overnight Financing Rate ("SOFR"(“SOFR”). Entities may elect to apply the provisions of this new standard as early as March 12, 2020 untilThis ASU was effective upon issuance and can be applied prospectively through December 31, 2022, when the reference rate replacement activity is expected to be complete. We have not yet elected an adoption date.2022. We continue to evaluate the impact and do not expect this ASU to have a material impact on our consolidated financial statements.


3.    REVENUE

Revenue by Category

We recognizedThe following tables presents revenue disaggregated by business segment, geographical region, and timing of transfer of goods or services, as follows:services.
Three Months EndedSix Months Ended
(in thousands)Jun 30, 2021Jun 30, 2020 *Mar 31, 2021Jun 30, 2021Jun 30, 2020 *
Business Segment:
Energy Services and Products
Subsea Robotics$141,371 $119,234 $119,119 $260,490 $259,004 
Manufactured Products79,127 100,570 86,825 165,952 267,104 
Offshore Projects Group107,951 73,840 89,234 197,185 148,094 
Integrity Management & Digital Solutions64,070 53,969 54,048 118,118 118,698 
Total Energy Services and Products392,519 347,613 349,226 741,745 792,900 
Aerospace and Defense Technologies105,680 79,603 88,327 194,007 170,984 
Total$498,199 $427,216 $437,553 $935,752 $963,884 
* Recast to reflect segment changes.
Three Months EndedSix Months Ended
(in thousands)Jun 30, 2021Jun 30, 2020Mar 31, 2021Jun 30, 2021Jun 30, 2020
Geographic Operating Areas:
Foreign:
Africa$71,405 $51,649 $62,792 $134,197 $115,066 
Norway57,360 45,423 52,294 109,654 97,607 
United Kingdom45,967 62,426 43,180 89,147 123,213 
Asia and Australia42,150 37,122 37,547 79,697 82,802 
Brazil27,520 19,117 20,653 48,173 45,606 
Other25,836 22,625 20,435 46,271 47,284 
Total Foreign270,238 238,362 236,901 507,139 511,578 
United States227,961 188,854 200,652 428,613 452,306 
Total$498,199 $427,216 $437,553 $935,752 $963,884 
Timing of Transfer of Goods or Services:
Revenue recognized over time$471,474 $396,773 $408,173 $879,647 $895,080 
Revenue recognized at a point in time26,725 30,443 29,380 56,105 68,804 
Total$498,199 $427,216 $437,553 $935,752 $963,884 

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Three Months EndedNine Months Ended
(in thousands)Sep 30, 2020Sep 30, 2019 *Jun 30, 2020 *Sep 30, 2020Sep 30, 2019 *
Business Segment:
Energy Services and Products
Subsea Robotics$119,617 $151,492 $119,234 $378,621 $432,548 
Manufactured Products110,416 114,487 100,570 377,520 334,488 
Offshore Projects Group73,212 89,115 73,840 221,306 289,193 
Integrity Management & Digital Solutions53,933 65,332 53,969 172,631 198,057 
Total Energy Services and Products357,178 420,426 347,613 1,150,078 1,254,286 
Aerospace and Defense Technologies82,565 77,221 79,603 253,549 233,028 
Total$439,743 $497,647 $427,216 $1,403,627 $1,487,314 
*Recast to reflect segment changes.
Three Months EndedNine Months Ended
(in thousands)Sep 30, 2020Sep 30, 2019Jun 30, 2020Sep 30, 2020Sep 30, 2019
Geographic Operating Areas:
Foreign:
Africa$43,077 $73,901 $51,649 $158,143 $222,397 
United Kingdom68,568 61,914 62,426 191,781 180,270 
Norway57,138 59,875 45,423 154,745 162,593 
Asia and Australia30,715 42,662 37,122 113,517 127,211 
Brazil19,296 25,404 19,117 64,902 66,825 
Other22,071 14,178 22,625 69,355 63,734 
Total Foreign240,865 277,934 238,362 752,443 823,030 
United States198,878 219,713 188,854 651,184 664,284 
Total$439,743 $497,647 $427,216 $1,403,627 $1,487,314 
Timing of Transfer of Goods or Services:
Revenue recognized over time$411,809 $460,029 $396,773 $1,306,889 $1,377,211 
Revenue recognized at a point in time27,934 37,618 30,443 96,738 110,103 
Total$439,743 $497,647 $427,216 $1,403,627 $1,487,314 

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.

The following table provides information about contract assets and contract liabilities from contracts with customers:customers.
(in thousands)Sep 30, 2020Dec 31, 2019
Contract assets$220,760 $221,288 
Contract liabilities45,566 117,342 

Six Months Ended
(in thousands)Jun 30, 2021Jun 30, 2020
Total contract assets, beginning of period$221,997 $221,288 
Revenue accrued898,853 867,613 
Amounts billed(873,688)(865,496)
Total contract assets, end of period$247,162 $223,405 
Total contract liabilities, beginning of period$50,046 $117,342 
Deferrals of milestone payments47,430 15,317 
Recognition of revenue for goods and services(35,488)(80,896)
Total contract liabilities, end of period$61,988 $51,763 
   
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.
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During the nine months ended September 30, 2020, contract assets decreased by $0.5 million from the balance at December 31, 2019, due to the timing of billings of approximately $1.272 billion exceeding revenue earned of $1.271 billion. Contract liabilities decreased $72 million from the balance at December 31, 2019, due to revenue recognition of $118 million in excess of deferrals of milestone payments that totaled $46 million. There were no cancellations, impairments or other significant impacts in the period that relate to other categories of explanation.

Performance Obligations

As of SeptemberJune 30, 2020,2021, the aggregate amount of the transaction price allocated to remaining performance obligations that were unsatisfied (or partially unsatisfied) was $226$205 million. In arriving at this value, we have used two practical 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 $177$132 million over the next 12 months, and we expect to recognize substantially all of the remaining balance of $48$73 million within the next 24 months.
Due to the nature of our service contracts in our Subsea Robotics, Offshore Projects Group,OPG, Integrity Management & Digital Solutions ("IMDS"(“IMDS”) and Aerospace and Defense Technologies ("ADTech")ADTech 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 Manufactured Products and ADTech 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 SeptemberJune 30, 2020.2021. We also have shorter-term product contracts with an expected original duration of one year or less that have been excluded.

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 threesix months ended SeptemberJune 30, 20202021 that was associated with performance obligations completed or partially completed in prior periods was not significant.

As of SeptemberJune 30, 2020,2021, 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 material rights. 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
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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 practical 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 $9.6$8.6 million and $15$8.3 million as of SeptemberJune 30, 20202021 and December 31, 2019,2020, respectively. For the three- and nine-monthsix-month periods ended SeptemberJune 30, 2020,2021, we recorded amortization expense of $1.5$1.3 million and $5.3$2.3 million, respectively. For the three- and nine-monthsix-month periods ended SeptemberJune 30, 2019,2020, we recorded amortization expense of $1.9 million and $6.2$3.8 million, respectively. No impairment costs were recognized.

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4.    IMPAIRMENTS

In the third quarterGoodwill
We did not identify any triggering events and, accordingly, no impairments of 2020, we changed our organizational structure as part of the transformation to realign our businesses to achieve greater cost efficiencies. This resulted in changes in our operating segments and reporting units. Beginning with the three months ended September 30, 2020, we are reporting our financial results consistent with our newly realigned operating segments and have recast certain prior period amounts presented to reflect these changes. For information regarding our new business segments, see Note 10–"Business Segment Information."

Goodwill

After reallocation of our goodwill to our new segmentswere recorded in the third quarter of 2020, we determined that impairment indicators were presentthree- and performed quantitative analyses for our Subsea Robotics and Manufactured Products reporting units. Based on these quantitative analyses,six-month periods ended June 30, 2021 or in the fair value was determined to be less than the carrying value for our Manufactured Products unit, but not for our Subsea Robotics reporting unit. As a result, for our Manufactured Products unit, we recorded a pre-tax goodwill impairment loss of $41 million.three-month period ended June 30, 2020.
During the first quarter of 2020, due to the protracted energy downturn compounded by demand destruction resulting from the adverse impacts of the COVID-19 pandemic and insufficient control of crude oil supply levels during the quarter, as well as our customers' continued focus on cost discipline, we determined that impairment indicators were present and we were required to perform a quantitative analysis for our Subsea Products–Service, Technology and Rentals ("(“ST&R"&R”), Subsea Products–Manufactured Products, Subsea Projects, Asset Integrity and Advanced Technologies–Commercial reporting units. Based on these quantitative analyses, the fair value was determined to be less than the carrying value for each of those reporting units, with the exception of Subsea Products–Manufactured Products. As a result, for our Subsea Products–ST&R, Subsea Projects, Asset Integrity and Advanced Technologies–Commercial reporting units, we recorded pre-tax goodwill impairment losses of $51 million, $130 million, $111 million and $11 million, respectively. For our Remotely Operated Vehicles ("ROV"(“ROV”) and Advanced Technologies–Government reporting units, qualitative assessments were performed; and we concluded that it was more likely than not the fair value of theeach of those reporting units werewas more than the carrying valuesvalue of the respective reporting unitsunit and, therefore, no impairments were recorded for those reporting units.
Our estimates of fair values for our reporting units determined in the first and third quartersquarter of 2020 required us to use significant unobservable inputs, classified as Level 3 fair value measurements, including assumptions related to future performance, risk-adjusted discount rates, future commodity prices and demand for our services and estimates of expected realizable values. For our cash flow projections in each of those periods,for the three-months ended March 31, 2020, we utilized a weighted-average cost of capital ranging from 11%12% to 15% and a terminal value based on the Gordon Growth Model, assuming an expected long-term growth rate of 2%.
Our third quarter 2020 change in our operating segments resulted in one reporting unit for each of our new segments. The following table reflects goodwill impairments, as recorded in the three-month period ended March 31, 2020, and allocated, based on historical cost, to the new reporting segments determined in the third quarter of 2020 to the reporting segments in our new organizational structure:2020:
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Three Months Ended March 31, 2020
(in thousands)As originally recordedAs recast to reflect segment changes
Segment/Reporting UnitGoodwill ImpairmentSubsea Robotics Manufactured ProductsOffshore Projects GroupIMDSTotal
Subsea Products/ST&R$51,302 $17,457 $— $33,845 $— $51,302 
Subsea Projects/Subsea Projects129,562 84,661 — 32,440 12,461 129,562 
Asset Integrity/Asset Integrity110,753 — — — 110,753 110,753 
Advanced Technologies/Commercial11,388 — 11,388 — — 11,388 
Total goodwill impairment$303,005 $102,118 $11,388 $66,285 $123,214 $303,005 
We did not identify any triggering events in the three- and nine-month periods ended September 30, 2019 and no impairments of goodwill were recorded in those periods.
Three Months Ended March 31, 2020
(in thousands)As originally recordedAs recast to reflect segment changes
Segment/Reporting UnitGoodwill ImpairmentSubsea Robotics Manufactured ProductsOPGIMDSTotal
Subsea Products/ST&R$51,302 $17,457 $— $33,845 $— $51,302 
Subsea Projects/Subsea Projects129,562 84,661 — 32,440 12,461 129,562 
Asset Integrity/Asset Integrity110,753 — — — 110,753 110,753 
Advanced Technologies/Commercial11,388 — 11,388 — — 11,388 
Total goodwill impairment$303,005 $102,118 $11,388 $66,285 $123,214 $303,005 
Aside from the goodwill impairments discussed above, the changes in our reporting units' goodwill balances during the periods presented are from currency exchange rate changes.
For further information regarding goodwill by business segment, see Note 10–"Business Segment Information."

Property and Equipment and Intangible Assets
After reallocation of our long-lived assets to our new segments in the third quarter of 2020, we determined that impairment indicators were present and performed a quantitative assessment for our Manufactured Products asset groups. Based on that assessment, we concluded that it was more likely than not that the fair value of the asset groups within Manufactured Products was more than the carrying value of each asset group and, therefore, no impairment was required. We did not identify any triggering events for our asset groups other than those includedand, accordingly, no impairments of long-lived assets were recorded in Manufactured Products during the third quarter ofthree- and six-month periods ended June 30, 2021 or in the three-month period ended June 30, 2020.
During the first quarter of 2020, due to the protracted energy downturn compounded by demand destruction resulting from the adverse impacts of the COVID-19 pandemic and insufficient control of crude oil supply levels during the quarter, as well as our customers' continued focus on cost discipline, we determined that impairment indicators were present within certain of our asset groups. To measure marketfair value for these asset groups, we used the following approaches:
Subsea Distribution Solutions U.K. - We utilized the cost approach and considered economic obsolescence under the income approach to determine fair value of the property and equipment.
Subsea Distribution Solutions Brazil and Angola - We utilized a combination of market and cost approaches to measure fair values.
Shallow Water vessels - We utilized the cost approach and considered historical, current and anticipated dayrates and utilization to measure market value.
Renewables and Special Projects - We utilized a combination of market and cost approaches to measure fair values.
Oceaneering Entertainment Systems and Oceaneering AGVAutomated Guided Vehicles (“AGV”) Systems - We utilized a combination of market and cost approaches to measure fair value.
Our estimates of fair valuesvalue for these asset groups determined in the first quarter of 2020 required us to use significant unobservable inputs, classified as Level 3 fair value measurements, including assumptions related to future performance, risk-adjusted discount rates, future commodity prices and demand for our services and estimates of expected realizable value. In the first quarter of 2020, ourOur cash flow projections utilized a weighted-average cost of capital ranging from 12% to 15% and a terminal value based on the Gordon Growth Model, assuming an expected long-term growth rate of 2%.
As a result, we determined that the carrying values exceeded the estimated fair values and recorded impairments as noted below. Our third quarter 2020 change in operating segments did not result in any changes in our asset groups. Our reporting units withThe following table reflects long-lived asset impairments as recorded in the three-month period ended March 31, 2020, were realigned into ourand assigned to the new reporting segments as follows:

determined in the third quarter of 2020:
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Three Months Ended March 31, 2020
(in thousands)As originally recordedAs recast to reflect segment changes
Segment/Reporting UnitLong-lived Asset ImpairmentsManufactured Products Offshore Projects GroupIMDSTotal
Subsea Products      
Subsea Distribution Solutions U.K.$6,543 $6,543 $— $— $6,543 
Subsea Distribution Solutions Brazil9,834 9,834 9,834 
Subsea Distribution Solutions Angola38,482 38,482 38,482 
Subsea Projects
Shallow Water Vessels3,894 3,894 3,894 
Renewables and Special Projects Group3,628 3,628 3,628 
Global Data Solutions167 167 167 
Advanced Technologies
Oceaneering Entertainment Systems5,065 5,065 5,065 
Oceaneering AGV Systems1,150 1,150 1,150 
Total long-lived asset impairments$68,763 $61,074 $7,522 $167 $68,763 
We did not identify any triggering events in the three- and nine-month periods ended September 30, 2019, and no impairments of long-lived assets were recorded in those periods.
Three Months Ended March 31, 2020
(in thousands)As originally recordedAs recast to reflect segment changes
Segment/Reporting UnitLong-lived Asset ImpairmentsManufactured Products OPGIMDSTotal
Subsea Products    
Subsea Distribution Solutions U.K.$6,543 $6,543 $— $— $6,543 
Subsea Distribution Solutions Brazil9,834 9,834 9,834 
Subsea Distribution Solutions Angola38,482 38,482 38,482 
Subsea Projects
Shallow Water vessels3,894 3,894 3,894 
Renewables and Special Projects Group3,628 3,628 3,628 
Global Data Solutions167 167 167 
Advanced Technologies
Oceaneering Entertainment Systems5,065 5,065 5,065 
Oceaneering AGV Systems1,150 1,150 1,150 
Total long-lived asset impairments$68,763 $61,074 $7,522 $167 $68,763 

5.    INCOME TAXES

Due to the economic uncertainty presented by COVID-19 and the current volatility in the oil and natural gas markets, we believe using a discrete tax provision method for the nine-month period ended September 30, 2020, based on actual earnings for the period, is a more reliable method for providing for income taxes because our annual effective tax rate as calculated under ASC 740-270 is highly sensitive to changes in estimates of total ordinary income (loss). Therefore, we do not believe a discussion of the annual effective tax rate is meaningful. TheOur tax provision is based on (1) our earnings for the period and other factors affecting the tax provision and (2) the operations of foreign branches and subsidiaries that are subject to local income and withholding taxes. Factors that affect our tax rate include our profitability levels in general and the geographicgeographical mix infrom the sources of our results. The effective tax rate for the nine-monthsix-month periods ended SeptemberJune 30, 20202021 and 20192020 was different than the federal statutory rate of 21%, primarily due to the 2020 enactment of the U.S. Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act"), the geographicgeographical mix of operating revenue and results, and changes in valuation allowances and uncertain tax positions, and other discrete items.items; therefore, we do not believe a discussion of the annual effective tax rate is meaningful. We continue to make an assertion to indefinitely reinvest the unrepatriated earnings of any foreign subsidiary that would incur incremental tax consequences upon the distribution of such earnings.earnings or deferred taxes related to balance sheet translation gains or losses.

On March 27, 2020, the U.S. Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) was signed into law in the United States. In accordance with the nine-month period ended September 30, 2020, we recognized a discrete tax benefit of $42 million, primarily related to a cash tax benefit of $33 millionrecently established rules and a non-cash tax benefit of $9.9 million related toprocedures under the CARES Act. These benefits are classified as an income tax receivable and a reduction in long-term liabilities, respectively. To secure these benefits,Act, we filed a 2014 refund claim to carrybackcarry back our U.S. net operating loss generated in 2019 and amended our 2012 and 2013 federal income tax returns impacted by the net operating loss carryback. Prior to the enactment of the CARES Act, such net operating losses could only be carried forward. As a result, we expect to receive combined refunds of approximately $33 million, of which we have received $5.6 million as of June 30, 2021. The remaining refunds are classified as accounts receivable, net, in our consolidated balance sheet as of June 30, 2021. In 2020, we also realized a non-cash tax benefit of $8.4 million due to the nine-month period ended September 30, 2019, wecarryback provision of the CARES Act recognized discrete tax expense of $5.1 million, primarily related to share-based compensation and valuation allowances.as a reduction in long-term liabilities.

We conduct our international operations in jurisdictions that have varying laws and regulations regarding income and other taxes, some of which are subject to interpretation. We recognize the expense or benefit for aan uncertain 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 uncertain tax expense or benefitposition is then measured and recognized at the largest amount that we believe is greater than 50% likely of being realized upon ultimate settlement. We will continue to monitor this legislation as subsequent actions could postpone, modify or suspend these changes.
Our tax expense for the quarter ending September 30, 2020, was impacted by changes in the corporate income tax and withholding tax laws in Angola enacted during the quarter. The Angola Corporate Income Tax (CIT) Code was amended by Law No. 26/2020, on July 20, 2020 with enforcement beginning on August 20, 2020. Among other
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changes, the new law decreased the corporate income tax rate from 30% to 25% and increased the withholding tax rate on certain payments made to entities not resident to Angola from 6.5% to 15%.
We have accrued a net total of $12 million and $21$15 million in other long-term liabilities on our balance sheet for worldwide unrecognized tax liabilities as of SeptemberJune 30, 20202021 and December 31, 2019,2020, respectively. We account for any applicable interest and penalties related to uncertain tax positions as a component of our provision for income taxes onin our consolidated financial statements. Changes in our 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 table lists the earliest tax years open to examination by tax authorities where we have significant operations:

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JurisdictionPeriods
United States2014
United Kingdom20182019
Norway20152016
Angola2013
Brazil20152016
Australia2015

We have ongoing tax audits in various jurisdictions. The outcome of these audits may have an impact on uncertain tax positions for income tax returns subsequently filed in those jurisdictions.


6.    SELECTED BALANCE SHEET INFORMATION
The following is information regarding selected balance sheet accounts:
 
(in thousands)(in thousands)Sep 30, 2020Dec 31, 2019(in thousands)Jun 30, 2021Dec 31, 2020
Inventory:Inventory:Inventory:
Remotely operated vehicle parts and components$68,957 $76,120 Remotely operated vehicle parts and components$62,746 $62,788 
Other inventory, primarily raw materials79,570 98,624 Other inventory, primarily raw materials66,387 78,453 
Total$148,527 $174,744 Total$129,133 $141,241 
Other current assets:Other current assets:Other current assets:
Prepaid expenses$55,960 $43,210 Prepaid expenses$55,458 $48,616 
Angolan bonds10,179 10,179 Angolan bonds6,914 10,179 
Total$66,139 $53,389 Total$62,372 $58,795 
Accrued liabilities:Accrued liabilities:Accrued liabilities:
Payroll and related costs$120,117 $137,001 Payroll and related costs$131,269 $135,042 
Accrued job costs40,662 54,387 Accrued job costs59,893 47,721 
Income taxes payable33,986 36,996 Income taxes payable42,983 35,929 
Current operating lease liability20,481 19,863 Current operating lease liability20,695 18,798 
Other73,882 89,434 Other55,917 55,373 
Total$289,128 $337,681 Total$310,757 $292,863 

7.    DEBT
Long-term debt consisted of the following: 
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(in thousands)Sep 30, 2020Dec 31, 2019(in thousands)Jun 30, 2021Dec 31, 2020
4.650% Senior Notes due 20244.650% Senior Notes due 2024$500,000 $500,000 4.650% Senior Notes due 2024$469,500 $500,000 
6.000% Senior Notes due 20286.000% Senior Notes due 2028300,000 300,000 6.000% Senior Notes due 2028300,000 300,000 
Fair value of interest rate swaps on $200 million of principal3,235 
Interest rate swap settlementsInterest rate swap settlements11,525 — Interest rate swap settlements8,982 10,870 
Unamortized debt issuance costsUnamortized debt issuance costs(5,894)(6,719)Unamortized debt issuance costs(5,059)(5,619)
Long-term debtLong-term debt$805,631 $796,516 Long-term debt$773,423 $805,251 

In November 2014, we completed the public offering of $500 million aggregate principal amount of 4.650% Senior Notes due 2024 (the "2024“2024 Senior Notes"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“2028 Senior Notes"Notes”). We pay interest on the 2028 Senior Notes on February 1 and August 1
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of each year. The 2028 Senior Notes are scheduled to mature on February 1, 2028. We used the net proceeds from the 2028 Senior Notes to repay our term loan indebtedness described further below.

We may redeem some or all of the 2024 Senior Notes and the 2028 Senior Notes (collectively, the "Senior Notes"“Senior Notes”) at specified redemption prices. In thethree months ended June 30, 2021, we repurchased approximately $31 million in aggregate principal amount of the 2024 Senior Notes at par in open market transactions. The aggregate purchase price included accrued and unpaid interest to the repurchase date of $0.3 million. We recorded loss on extinguishment of debt of less than $0.1 million for fees associated with the repurchases.

In October 2014, we entered into a credit agreement (as amended, the "Credit Agreement"“Credit Agreement”) with a group of banks. The Credit Agreement initially provided for a $500 million five-year revolving credit facility (the "Revolving“Revolving Credit Facility"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"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. As of SeptemberJune 30, 2020,2021, 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)Agreement and which stipulates that, among other items, we exclude any impacts associated with current and prior period impairments) of 55%. The Credit Agreement includes customary events of default and associated remedies. As of SeptemberJune 30, 2020,2021, we were in compliance with all the covenants set forth in the Credit Agreement.

We had two interest rate swaps in place relating to a total of $200 million of the 2024 Senior Notes for the period to November 2024. The agreements swapped the fixed interest rate of 4.65% 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%. In March 2020, we settled both interest rate swaps with the counterparty for cash proceeds of $13 million. The settlement resulted in a $13 million adjustmentincrease to increase our long-term debt balance that will be amortized to
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interest expense prospectively through the maturity date for the 2024 Senior Notes using the effective interest method. As a result, we amortized $0.6$1.3 million and $1.3$1.9 million to interest expense for the three- and nine-monthsix-month periods ended SeptemberJune 30, 2020, respectively.2021, respectively, and $0.7 million to interest expense for the three- and six-month periods ended June 30, 2020. The three- and six-month periods ended June 30, 2021 include $0.6 million for the pro-rata write-off of interest rate swap settlement gains associated with the 2024 Senior Notes repurchases discussed above.

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 of new loan costs, including costs of the amendments prior to Amendment No. 4, related to the Credit Agreement. TheThese costs, net of accumulated amortization, are included as a reduction of long-term debt on our Consolidated Balance Sheets, as they pertain to the Senior Notes, and in other noncurrent assets, as they pertain to the Credit Agreement. We are amortizing these costs to interest expense through the
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respective maturity dates for the Senior Notes and to January 2023 for the Credit Agreement.
Agreement using the straight-line method, which approximates the effective interest rate method.

8.    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 $571$777 million as of SeptemberJune 30, 2020,2021, 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).

AsForeign currency gains (losses) related to the Angolan kwanza of $(0.5) million and $(0.2) million in the three-month periods ended June 30, 2021 and 2020, respectively, and $(1.9) million and $(2.2) million in the six-month periods ended June 30, 2021 and 2020, respectively, were primarily due to the remeasurement of our functionalAngolan kwanza cash balances to U.S. dollars. Foreign currency gains (losses) related to the Brazilian real of less than $0.1 million and $(3.7) million in Angolathe three-month periods ended June 30, 2021 and Brazil is2020, respectively, and less than $0.1 million and $(7.7) million in the six-month periods ended June 30, 2021 and 2020, respectively, were primarily due to the remeasurement of our U.S. dollar wedenominated liability balances to the Brazilian real. We recorded foreign currency transaction losses related to the Angolan kwanza and Brazilian real as a component of other income (expense), net in our Consolidated Statements of Operations. Foreign currency losses related to the Angolan kwanza of less than $0.1 million and $2.0 million in the three-month periods ended September 30, 2020 and 2019, respectively, and $2.2 million and $2.6 million in the nine-month periods ended September 30, 2020 and 2019, respectively, were primarily due to the remeasurement of our Angolan kwanza cash balances to U.S. dollars. Foreign currency losses related to the Brazilian real of $0.7 million and $1.3 million in the three-month periods ended September 30, 2020 and 2019, respectively, and $8.4 million and $1.0 million in the nine-month periods ended September 30, 2020 and 2019, respectively, were primarily due to the remeasurement of our Brazilian real liability balances to U.S. dollars.
Any conversion of cash balances from kwanza to U.S. dollars is controlled by the central bank in Angola. As of SeptemberJune 30, 20202021 and December 31, 2019,2020, we had the equivalent of approximately $9.4$6.6 million and $6.2$4.7 million, respectively, of kwanza cash balances in Angola reflected on our Consolidated Balance Sheets.
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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. As of SeptemberJune 30, 20202021 and December 31, 2019,2020, we had $6.9 million and $10 million, respectively, 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. During the
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three- and six-month periods ended June 30, 2021, we sold a portion of these bonds for $1.9 million and $4.5 million and recognized a gain of $0.2 million and $0.5 million, respectively, as a component of interest income in our Consolidated Statement of Operations.

We estimated the fair market value of the Angolan bonds to be $6.9 million and $10 million as of SeptemberJune 30, 20202021 and December 31, 20192020, respectively, 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 June 30, 2021, we have $0.7 million in unrealized gains, net of tax, related to these bonds as a component of accumulated other comprehensive loss in our Consolidated Balance Sheets.

Due to the ongoing impact of COVID-19, certain projects that were in process have been delayed in our Manufactured Products segment. As of June 30, 2021 and December 31, 2020, we had outstanding accounts receivable and contract assets of approximately $51 million for these projects. We continue to believe these accounts receivable and contract assets are realizable and the projects will resume.

In the three-month period ended June 30, 2021, we were notified by a customer in our Manufactured Products segment that it was suspending a contract that is substantially complete. As of June 30, 2021, we had outstanding contract assets of approximately $73 million. We are in discussions with the customer concerning the timing of remaining payments. We continue to believe these contract assets are realizable and the project will resume.

9.    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 2018, 2019, 2020 and through SeptemberJune 30, 2020,2021, we granted restricted units of our common stock to certain of our key executives and employees. During 2018, 2019, 2020 and 2020,through June 30, 2021, our Board of Directors granted restricted common stock to our nonemployee directors. The restricted stock 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 sharesgrants of restricted stock we grant to our nonemployee directors were scheduled to vest in full on the first anniversary of the award date conditional onupon continued service as a director.director, except for the 2021 grant to one director who retired from our board of directors as of the date of our annual meeting of shareholders in May 2021, which vested on that date. 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 20182020 through SeptemberJune 30, 2020,2021, 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 SeptemberJune 30, 20202021 and December 31, 2019,2020, respective totals of 1,987,9642,493,742 and 1,741,3351,955,346 shares of restricted stock and 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 $11$17 million as of SeptemberJune 30, 2020.2021. 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 toshare repurchase program under which we may repurchase up to 10 million shares of our common stock.stock on a discretionary basis. Under this plan, in 2015,the program, which has no expiration date, we had repurchased 2.0 million shares.shares for $100 million through December
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31, 2015. We have 0tnot repurchased any shares under this plan since 2015.2015, and we are not obligated to make any future repurchases. We account for the shares we hold in treasury under the cost method, at average cost.

10.    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.

In the third quarter of 2020, we changed our organizational structure as part of the transformation to realign our businesses to achieve greater cost efficiencies.efficiencies and to bring together business units that frequently work together and promote increased synergies in bidding, project management and the use of offshore technicians. As a result, information that our chief operating decision maker
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regularly reviews changed. Therefore, beginning with results for the three months ended September 30, 2020, we are reporting our financial results consistent with our newly realigned operating segments and have recast certain prior period amounts to conform to the way we internally manage our businesses and monitor segment performance. Our new structure aligns our company around five reportable segments: (1) Subsea Robotics; (2) Manufactured Products; (3) Offshore Projects Group; (4) Integrity Management & Digital Solutions; and (5) Aerospace and Defense Technologies.

Our Energy Services and Products business leverages our asset base and capabilities for providing services and products predominantly for offshore energy operations, inclusive of the offshore renewable energy market. Our Energy Services and Products segments are:

Subsea RoboticsOur Subsea Robotics segment consists of our prior ROV segment, plus ROV tooling (previously in our Subsea Products segment) and survey services (previously in our Subsea Projects segment). Our Subsea Robotics segment provides the following:

ROVs for drilling support and vessel-based services, including subsea hardware installation, construction, pipeline inspection, survey and facilities inspection, maintenance and repair;
ROV tooling; and
survey services, including hydrographic survey and positioning services and autonomous underwater vehicles for geoscience.

Manufactured ProductsOur Manufactured Products segment consists of our prior Manufactured Products Business unit (previously in our Subsea Products segment) plus commercial theme park entertainment systems and automated guided vehicleAGV technology (previously(both previously in our Advanced Technologies segment). Our Manufactured Products segment provides the following:

distribution and connection systems including production control umbilicals and field development hardware and pipeline connection and repair systems to the energy industry; and
automated guided vehicle AGV technology and entertainment systems to a variety of industries.

Offshore Projects GroupOur Offshore Projects GroupOPG segment consists of our prior Subsea Projects segment less survey services, maritime shipping and global data solutions (“GDS”) plus our Service and Rental business unit (previously in our Subsea Products segment). Our Offshore Projects GroupOPG segment provides the following:

project management, subsea installation and intervention, including riserless light well intervention services, inspection, maintenance and repair (“IMR”) services, principally in the U.S. Gulf of Mexico and offshore Angola, utilizing owned and charterchartered vessels;
riserless light well intervention services;
installation and workover control systems and ROV workover control systems;
project management and engineering; and
seabed preparation, route clearance and trenching services for submarine cables for the renewable energy markets.

Integrity Management & Digital Solutions ("IMDS")Our IMDS segment consists of our prior Asset Integrity segment plus GDS and maritime shipping and GDS (previously(both previously in our Subsea Projects segment).Our IMDS segment provides the following:

asset integrity management services;
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software and analytical solutions for the bulk cargo maritime industry; and
software, digital and connectivity solutions for the energy industry.

Our Aerospace and Defense Technologies ("ADTech") segment consists of our prior Government business unit (previously in our Advanced Technologies segment). Our ADTech segment provides services and products include engineering and related manufacturing in defense and space exploration activities, principally to U.S. Government agencies and their prime contractors.

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.

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The following table that follows presents revenue, income (loss) from operations and depreciation and amortization expense by business segment for each of the periods indicated. segment:
 Three Months EndedNine Months Ended
(in thousands)Sep 30, 2020Sep 30, 2019 *Jun 30, 2020 *Sep 30, 2020Sep 30, 2019 *
Revenue
Energy Services and Products
Subsea Robotics$119,617 $151,492 $119,234 $378,621 $432,548 
Manufactured Products110,416 114,487 100,570 377,520 334,488 
Offshore Projects Group73,212 89,115 73,840 221,306 289,193 
Integrity Management & Digital Solutions53,933 65,332 53,969 172,631 198,057 
Total Energy Services and Products357,178 420,426 347,613 1,150,078 1,254,286 
Aerospace and Defense Technologies82,565 77,221 79,603 253,549 233,028 
Total$439,743 $497,647 $427,216 $1,403,627 $1,487,314 
Income (Loss) from Operations
Energy Services and Products
Subsea Robotics$2,127 $15,457 $11,662 $(80,294)$33,277 
Manufactured Products(38,198)(2,158)3,865 (100,471)1,070 
Offshore Projects Group(12,282)(34)(4,135)(95,740)(2,792)
Integrity Management & Digital Solutions793 (1,721)(1,825)(122,567)(3,669)
Total Energy Services and Products(47,560)11,544 9,567 (399,072)27,886 
Aerospace and Defense Technologies13,097 11,709 13,430 39,498 30,214 
Unallocated Expenses(26,157)(28,447)(28,179)(86,985)(94,643)
Total$(60,620)$(5,194)$(5,182)$(446,559)$(36,543)
Depreciation and Amortization, including Goodwill Impairment
Energy Services and Products
Subsea Robotics$25,144 $31,090 $25,080 $189,411 $95,917 
Manufactured Products44,028 4,920 3,587 63,579 14,953 
Offshore Projects Group15,147 10,610 8,255 98,309 30,758 
Integrity Management & Digital Solutions866 2,087 757 125,966 6,170 
Total Energy Services and Products85,185 48,707 37,679 477,265 147,798 
Aerospace and Defense Technologies654 640 658 1,999 1,998 
Unallocated Expenses1,712 1,220 361 3,181 3,561 
Total$87,551 $50,567 $38,698 $482,445 $153,357 
* Recast to reflect segment changes.
 Three Months EndedSix Months Ended
(in thousands)Jun 30, 2021Jun 30, 2020 *Mar 31, 2021Jun 30, 2021Jun 30, 2020 *
Revenue
Energy Services and Products
Subsea Robotics$141,371 $119,234 $119,119 $260,490 $259,004 
Manufactured Products79,127 100,570 86,825 165,952 267,104 
Offshore Projects Group107,951 73,840 89,234 197,185 148,094 
Integrity Management & Digital Solutions64,070 53,969 54,048 118,118 118,698 
Total Energy Services and Products392,519 347,613 349,226 741,745 792,900 
Aerospace and Defense Technologies105,680 79,603 88,327 194,007 170,984 
Total$498,199 $427,216 $437,553 $935,752 $963,884 
Income (Loss) from Operations
Energy Services and Products
Subsea Robotics$21,710 $11,662 $14,619 $36,329 $(82,421)
Manufactured Products790 3,865 2,753 3,543 (62,273)
Offshore Projects Group7,996 (4,135)8,813 16,809 (83,458)
Integrity Management & Digital Solutions4,721 (1,825)2,474 7,195 (123,360)
Total Energy Services and Products35,217 9,567 28,659 63,876 (351,512)
Aerospace and Defense Technologies19,340 13,430 16,839 36,179 26,401 
Unallocated Expenses(31,738)(28,179)(31,715)(63,453)(60,828)
Total$22,819 $(5,182)$13,783 $36,602 $(385,939)
Depreciation and Amortization, including Goodwill Impairment
Energy Services and Products
Subsea Robotics$22,436 $25,080 $22,952 $45,388 $164,267 
Manufactured Products3,248 3,587 3,227 6,475 19,551 
Offshore Projects Group6,862 8,255 7,125 13,987 83,162 
Integrity Management & Digital Solutions1,091 757 1,124 2,215 125,100 
Total Energy Services and Products33,637 37,679 34,428 68,065 392,080 
Aerospace and Defense Technologies1,404 658 1,276 2,680 1,345 
Unallocated Expenses184 361 767 951 1,469 
Total$35,225 $38,698 $36,471 $71,696 $394,894 
* Recast to reflect segment changes.

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.
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Income (Loss) from Operations
Three Months Ended SeptemberJune 30, 2021, June 30, 2020 and March 31, 2021—During the three-month periods ended June 30, 2021, June 30, 2020 and March 31, 2021, we recorded adjustments attributable to each of our reporting segments as follows:

For the Three Months Ended June 30, 2021
(in thousands)Subsea RoboticsManufactured ProductsOPGIMDSADTechUnallocated ExpensesTotal
Adjustments for the effects of:
Loss on sale of asset$— $— $— $— $— $1,415 $1,415 
Total adjustments for the three months ended June 30, 2021$ $ $ $ $ $1,415 $1,415 

For the Three Months Ended June 30, 2020 *
(in thousands)Subsea RoboticsManufactured ProductsOPGIMDSADTechUnallocated ExpensesTotal
Adjustments for the effects of:
Other$1,380 $1,212 $1,405 $1,536 $$175 $5,708 
Total adjustments for the three months ended June 30, 2020$1,380 $1,212 $1,405 $1,536 $0 $175 $5,708 
* Recast to reflect segment changes.

For the Three Months Ended March 31, 2021
(in thousands)Subsea RoboticsManufactured ProductsOPGIMDSADTechUnallocated ExpensesTotal
Other$395 $537 $149 $217 $10 $— $1,308 
Total adjustments for the three months ended March 31, 2021$395 $537 $149 $217 $10 $ $1,308 

Six Months Ended June 30, 2021 and June 30, 2020—During the three-month periodsix-month periods ended SeptemberJune 30, 2021 and 2020, we recorded adjustments attributable to each of our reporting segments as follows:
For the Three Months Ended September 30, 2020
(in thousands)Subsea RoboticsManufactured ProductsOffshore Projects GroupIMDSADTechUnallocated ExpensesTotal
Adjustments for the effects of:
Long-lived assets write-offs$— $— $7,243 $— $— $— $7,243 
Inventory write-downs7,038 — — — — — 7,038 
Goodwill impairment— 40,875 — — — — 40,875 
Other2,535 2,559 5,326 83 545 — 11,048 
Total of adjustments$9,573 $43,434 $12,569 $83 $545 $— $66,204 

For the Six Months Ended June 30, 2021
(in thousands)Subsea RoboticsManufactured ProductsOPGIMDSADTechUnallocated ExpensesTotal
Loss on sale of asset$— $— $— $— $— $1,415 $1,415 
Other395 537 149 217 10 — 1,308 
Total adjustments for the six months ended June 30, 2021$395 $537 $149 $217 $10 $1,415 $2,723 

For the Six Months Ended June 30, 2020 *
(in thousands)Subsea RoboticsManufactured ProductsOPGIMDSADTechUnallocated ExpensesTotal
Adjustments for the effects of:
Long-lived assets impairments$— $61,074 $7,522 $167 $— $— $68,763 
Long-lived assets write-offs7,328 — — — — — 7,328 
Goodwill impairment102,118 11,388 66,285 123,214 — — 303,005 
Other2,299 3,196 2,621 3,767 455 12,338 
Total adjustments for the six months ended June 30, 2020$111,745 $75,658 $76,428 $127,148 $0 $455 $391,434 
* Recast to reflect segment changes.
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Nine Months Ended September 30, 2020—During the nine-month period ended September 30, 2020, we recorded adjustments attributable to eachTable of our reporting segments as follows:Contents
For the Nine Months Ended September 30, 2020
(in thousands)Subsea RoboticsManufactured ProductsOffshore Projects GroupIMDSADTechUnallocated ExpensesTotal
Adjustments for the effects of:
Long-lived assets impairments$— $61,074 $7,522 $167 $— $— $68,763 
Long-lived assets write-offs7,328 — 7,243 — — — 14,571 
Inventory write-downs7,038 — — — — — 7,038 
Goodwill impairment102,118 52,263 66,285 123,214 — — 343,880 
Other4,834 5,755 7,947 3,850 545 455 23,386 
Total of adjustments$121,318 $119,092 $88,997 $127,231 $545 $455 $457,638 

Depreciation and Amortization, including Goodwill Impairment
Depreciation expense on property and equipment, reflected in Depreciation and Amortization, including Goodwill Impairment in the table above, was $36$35 million, $47$38 million and $38$35 million in the three-month periods ended SeptemberJune 30, 2021 and 2020 and 2019 and June 30, 2020,March 31, 2021, respectively, and $117$70 million and $145$81 million in the nine-monthsix-month periods ended SeptemberJune 30, 20202021 and 2019,2020, respectively.
Amortization expense on long-lived intangible assets, reflected in Depreciation and Amortization, including Goodwill Impairment in the table above, was $3.5$0.8 million, $3.2$0.8 million and $0.8$1.3 million in the three-month periods ended SeptemberJune 30, 2021 and 2020 and 2019 and June 30, 2020,March 31, 2021, respectively, and $6.9$2.1 million and $8.8$3.4 million in the nine-monthsix-month periods ended SeptemberJune 30, 20202021 and 2019,2020, respectively.
Goodwill impairment expense, reflected in Depreciation and Amortization, including Goodwill Impairment in the table above, was $41$303 million and $344 million, in the three-month and nine-month periodssix-month period ended SeptemberJune 30, 2020, respectively.2020. For further information regarding goodwill impairment expense, see Note 4–"4—“Impairments."
Long-lived assetsasset write-offs, reflected in Depreciation and Amortization, including Goodwill Impairment in the table above, was $7.2 million and $15were $7.3 million in the three-month and nine-month periodssix-month period ended SeptemberJune 30, 2020, respectively.2020. For further information regarding our long-lived assetsasset write-offs, see Note 4–"4—“Impairments."
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Assets, Property and Equipment, Net and Goodwill
The following table presents Assets, Property and Equipment, Net and Goodwill by business segment:
 
(in thousands)Sep 30, 2020Dec 31, 2019 *
Assets
Energy Services and Products
Subsea Robotics$513,048 $765,015 
Manufactured Products450,201 607,674 
Offshore Projects Group363,366 504,139 
Integrity Management & Digital Solutions84,716 236,137 
Total Energy Services and Products1,411,331 2,112,965 
Aerospace and Defense Technologies119,153 138,772 
Corporate and Other507,216 488,926 
Total$2,037,700 $2,740,663 
Property and Equipment, Net
Energy Services and Products
Subsea Robotics$262,747 $336,038 
Manufactured Products95,157 151,259 
Offshore Projects Group218,900 255,425 
Integrity Management & Digital Solutions11,917 13,403 
Total Energy Services and Products588,721 756,125 
Aerospace and Defense Technologies8,083 9,574 
Corporate and Other12,622 10,833 
Total$609,426 $776,532 
Goodwill
Energy Services and Products
Subsea Robotics$24,105 $129,402 
Manufactured Products— 52,828 
Offshore Projects Group— 73,352 
Integrity Management & Digital Solutions— 139,043 
Total Energy Services and Products24,105 394,625 
Aerospace and Defense Technologies10,454 10,454 
Total$34,559 $405,079 
* Recast to reflect segment changes.

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Item 2.Management's Discussion and Analysis of Financial Condition and Results of Operations

Certain statements we make in this quarterly report on Form 10-Q are forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements include, without limitation, statements regarding our expectations about:
the impacts of COVID-19the coronavirus (“COVID-19”) pandemic on the U.S. and the global economy, as well as on our business;
our fourththird quarter 20202021 operating results and the contributions from our segments to those results, as well as the amount of Unallocated Expenses for the fourththird quarter;
our expectation of CAREStax refunds under the U.S. Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) and other tax refunds;
our cash tax payments and projected capital expenditures for 2020;2021;
free cash flow, which we define as net cash provided by operating activities less cash paid for purchases of property and equipment, in 20202021 and in future periods;
future demand, order intake and business activity levels;
the timing forbacklog of our Manufactured Products segment, to the commencementextent backlog may be an indicator of work on the Angola light well intervention project;future revenue or productivity;
the adequacy of our liquidity, cash flows and capital resources;
the condition of debt markets and our possible future debt repurchases;
shares to be repurchased under our share repurchase plan;
the implementation of new accounting standards and related policies, procedures and controls;
seasonality; and
industry conditions.

These forward-looking statements are subject to various risks, uncertainties and assumptions, including those we have referred to under the headings "Risk Factors"“Risk Factors” and "Cautionary“Cautionary Statement Concerning Forward-Looking Statements"Statements” in Part I of our annual report on Form 10-K for the year ended December 31, 2019.2020. Although we believe that the expectations reflected in such forward-looking statements are reasonable, because of the inherent limitations in the forecasting process, as well as the relatively volatile nature of the industries in which we operate, we can give no assurance that those expectations will prove to have been correct. Accordingly, evaluation of our future prospects must be made with caution when relying on forward-looking information.

The following discussion should be read in conjunction with "Management's“Management's Discussion and Analysis of Financial Condition and Results of Operations"Operations” included in our annual report on Form 10-K for the year ended December 31, 2019.2020.

Recent Developments Affecting Industry Conditions and Our Business
The ongoing coronavirus (COVID-19) outbreak, which the World Health Organization declared a pandemic and the U.S. Government declared a national emergency in March 2020, has reached more than 200 countries and has continued to be a rapidly evolving situation. The pandemic has resulted in widespread adverse impacts on the global economy and financial markets, and on our employees, customers, suppliers and other parties with whom we have business relations. We have experienced some resulting disruptions to our business operations, as the pandemic has continued to spread through most of our markets. For example, since mid-March, we have had to restrict access to our administrative offices around the world and quarantine personnel and assets as required by various governmental authorities and our own safety protocols.

Our first priority in our response to this crisis has been the health and safety of our employees and those of our customers and other business counterparties. We have implemented preventative measures and developed corporate and regional response plans to minimize unnecessary risk of exposure and prevent infection, while supporting our customers’ global operations to the best of our ability in the circumstances. Our preventative measures and response plans were developed based on guidance received from the World Health Organization, Centers for Disease Control and Prevention, International SOS and our corporate medical advisor. We have modified certain business and workforce practices (including those related to employee travel, employee work locations, and cancellation of physical participation in meetings, events and conferences) and implemented new protocols to promote social distancing and enhance sanitary measures in our offices and facilities to conform to government restrictions and best practices encouraged by governmental and regulatory authorities.

There is considerable uncertainty regarding the extent to which COVID-19 will continue to spread and the extent and duration of governmental and other measures implemented to try to slow the spread of the virus, such as large-scale travel bans and restrictions, border closures, quarantines, shelter-in-place orders and business and government shutdowns. Restrictions of this nature have caused, and may continue to cause, us, our suppliers and
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other business counterparties to experience operational delays, delays in the delivery of materials and supplies that are sourced from around the globe, and have caused, and may continue to cause, milestones or deadlines relating to various projects to be missed.

We have also received various notices from some of our suppliers and other business counterparties, and provided notices to several customers, regarding performance delays resulting from the pandemic. These actions may result in some disputes and could strain our relations with customers and others. If and to the extent these actions were to result in material modifications or cancellations of the underlying contracts, we could experience reductions in our currently reported backlog and in the anticipated conversion of backlog into revenue in future periods. In addition, worsening economic conditions could result in reductions in backlog over time, which would impact our future financial performance.

One of the impacts of the pandemic has been a significant reduction in global demand for oil and natural gas. For example, according to industry reports, global demand for oil dropped precipitously by approximately 14 million barrels per day during the first quarter of 2020. This significant decline in demand was met with a sharp decline in oil prices following the announcement of price reductions and production increases in March 2020 by members of the Organization of Petroleum Exporting Countries ("OPEC"), and other foreign, oil-exporting countries. The resulting supply/demand imbalance has had, and is continuing to have, disruptive impacts on the oil and natural gas exploration and production industry and on other industries that serve exploration and production companies. OPEC and other foreign, oil-producing countries implemented production cuts during the second quarter and, though somewhat eased in August, extended the production cuts in the third quarter, in an effort to address the supply/demand imbalance. As a result, crude oil prices improved somewhat. However, as estimated by the International Energy Agency, global crude oil demand for the full year of 2020 was approximately 8.4 million barrels per day lower than for 2019. Recent increases in COVID-19 cases, or a so-called “second wave,” in various regions around the world and the resulting governmental and other restrictions imposed in response to those increases, have resulted in more volatility and less predictability in industry conditions. These conditions have led to significant global economic contraction generally and in our industry in particular.

We expect to see continued volatility in oil and natural gas prices for the foreseeable future, which could, over the long term, adversely impact our business. A significant decline in exploration and development activities and related spending by our customers, whether due to decreases in demand or prices for oil and natural gas or otherwise, would have a material adverse effect on our business, cash flows, liquidity, financial condition and results of operations.

As of the date of this report, our efforts to respond to the challenges presented by the conditions described above and minimize the impacts to our business have yielded results as we have largely been able to maintain operational continuity on a worldwide basis. Our manufacturing, services operations, and other operating facilities have remained operational and our vessels have continued to perform. We have moved quickly to reduce costs, increase operational efficiencies and lower our capital spending. In addition, as of September 30, 2020, we had $359 million of cash on our balance sheet and our $500 million revolving credit facility was undrawn and remains available to support our operations. We have not required any funding under any COVID-19-related, U.S. federal or other governmental programs to support our operations, and we do not expect to have to utilize any such funding. We have experienced some increased absenteeism in our hourly workforce, but, so far, we have not experienced any resulting problems that we have not been able to manage. We are continuing to address concerns to protect the health and safety of our employees and those of our customers and other business counterparties, and this includes changes to comply with health-related guidelines as they are modified and supplemented.

We cannot predict the full impact that COVID-19 or the significant disruption and volatility currently being experienced in the oil and natural gas markets will have on our business, cash flows, liquidity, financial condition and results of operations at this time, due to numerous uncertainties. The ultimate impacts will depend on future developments beyond our control, which are highly uncertain and cannot be predicted, including, among others, the ultimate geographic spread of the virus, the consequences of governmental and other measures designed to prevent the spread of the virus, the development of safe and effective treatments and vaccines, the duration of the outbreak, actions taken by members of OPEC and other foreign oil-exporting countries, governmental authorities, customers, suppliers and other thirds parties, workforce availability, and the timing and extent to which normal economic and operating conditions resume.

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Realignment of Reportable Segments

As described in Note 10, "Business10—“Business Segment Information,”Information” in the accompanying consolidated financial statements,Notes to Consolidated Financial Statements included in this report, in the third quarter of 2020, we changed our organizational structure as part of the transformation to realign our businesses to achieve greater cost efficiencies.efficiencies and to bring together business units that frequently work together and promote increased synergies in bidding, project management and the use of offshore technicians. As a result, information that our chief operating decision maker regularly reviews for purposes of allocating resources and assessing performance changed. Therefore, for the threethree- and nine monthssix-month periods ended SeptemberJune 30, 2020,2021, we are reporting our financial results consistent with our newly realigned operating segments and have recast certain prior period amounts to conform to the way we internally manage our businesses and monitor segment performance. Our new structure aligns our company around five reportable segments: (1) Subsea Robotics; (2) Manufactured Products; (3) Offshore Projects Group;Group (“OPG”); (4) Integrity Management & Digital Solutions;Solutions (“IMDS”); and (5) Aerospace and Defense Technologies.Technologies (“ADTech”).

Overview of our Results and Guidance

Our diluted earnings (loss) per share for the three- and nine-monthsix-month periods ended SeptemberJune 30, 20202021 were $(0.80)$0.06 and $(4.76)$(0.03), respectively, as compared to $(0.26)$(0.25) and $(0.87)$(3.96) for the corresponding periods of the prior year. Considering the uncertainties surrounding crude oil marketsThese
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operating results met our expectations, and the COVID-19 pandemic, we were encouraged byeach of our operating segments in the three- and six-month periods ended June 30, 2021 contributed operating income.

Our continued operating results adjusted for asset impairments, write-offs and other charges. These results were partially attributable to our actions to substantially reduce structural costsimprovement in lightthe second quarter of an expected continuation of lower demand for our services and products.
Adjusted operating income improved2021, as compared to the secondfirst quarter of 2020, as2021, was primarily attributable to a seasonally influenced growth in revenue in our energy businesses complemented by continued operating discipline and incremental efficiency gains from our cost-out efforts are meaningfully enhancing our bottom-line results. Sequentially, the adjusted operating results for each of our segments, except Subsea Robotics, improved asgains. As expected, compared to the secondfirst quarter of 2020. Each2021, our energy segments increased revenue, with double-digit growth, and improved operating results in the second quarter. Our ADTech segment reported positive adjusteddelivered sequential double-digit revenue growth and solid operating income. Ourresults.

During the first half of 2021, our cash positionincreased $4.1 million, primarily from the $49 million of $359cash generated from operating activities as a result of good operating performance. We repurchased $31 million asin aggregate principal amount of September 30, 2020 increased by $25.3our 2024 Senior Notes (as defined below in Liquidity and Capital Resources) through open market repurchases and $23 million fromfor maintenance and growth capital expenditures. We believe that our cash balance of $456 million at June 30, 2020, largely driven by positive contributions2021 coupled with improved debt markets and our expected cash flows from operations in 2021 will provide us with improved flexibility to address our 2024 debt maturity while we continue to leverage our technologies and working capital, and ongoing capital conservation.core competencies into energy-transition opportunities.

Looking forward, we believe our fourthconsolidated third quarter 20202021 results will decline sequentially with the onset ofon moderately lower seasonal offshorerevenue, as compared to our second quarter 2021 results. We expect commodity prices to support good activity levels in our energy segments, particularly for short-cycle work. We anticipate relatively flat activity and customer budget exhaustion negatively affectingoperating profitability in our energy businesses. Sequentially, we are projectingSubsea Robotics, Manufactured Products and IMDS segments, lower activity levels and relatively flat operating profitability in our OPG segment, and lower activity levels and lower operating resultsprofitability in each of our segments, except Manufactured Products. That segment is expected to recognize higher revenue and operating results as a result of percentage-of-completion revenue and operating income recognition on certain projects.ADTech segment. Unallocated Expenses are expected to approximate $30 million.be in the mid-$30 million range, due primarily to increased information technology infrastructure costs and normalized accruals for incentive-based compensation.

On March 27, 2020, the U.S. Coronavirus Aid, Relief, and Economic SecurityCARES Act (the "CARES Act") was signed into law in the U.S.United States. In accordance with the recently established rules and procedures under the CARES Act, we filed a 2014 refund claim to carrybackcarry back our U.S. net operating loss generated in 2019 and filed an amended 2012 and 2013 income tax returnsreturn that was impacted by the net operating loss carryback. As a result, we expectPrior to receive combined refunds of approximately $33 million. These refunds are classified as accounts receivable, net, in the consolidated balance sheet as of September 30, 2020. We also realized a non-cash tax benefit of $9.9 million due to the carryback provision of the CARES Act recognized as a reduction in long-term liabilities. Prior to enactment of the CARES Act, such net operating losses could only be carried forward. As a result, we expect to receive combined refunds of these actions and other factors, any discussionapproximately $33 million, of an estimated effective tax rate would not be meaningful.which we have received $5.6 million as of June 30, 2021. The remaining refunds are classified as accounts receivable, net, in our consolidated balance sheet as of June 30, 2021.
We affirm our guidance for
Our cash tax payments for the full year of 20202021 are estimated to be in the range of $30$40 million to $35$45 million, primarily due to taxes incurred in countries that impose tax on the basis of in-country revenue, without regard to the profitability of such operations, and ouroperations. These cash tax payments do not include the impact of approximately $28 million of CARES Act and othertax refunds expected to be received in the range of $16 million to $34 million.2021 or 2022.

We are narrowingaffirm our guidance range for capital expenditures toof $50 million to $60 million. We continue to expect to generate positive free cash flow$70 million for capital expenditures for the full year of 20202021. We remain committed to maintaining strong liquidity for the full year of 2021 and expect the fourth quarter of 2020believe that our cash position, undrawn revolving credit facility, and debt maturity profile should provide us ample resources and time to benefit from the aforementioned tax refunds and positive working capital changes.address potential opportunities to improve our returns.

Results of Operations

We operate in five business segments. The segments are contained within two businesses — services and products provided primarily to the oil and gas industry, and to a lesser extent, the offshore energy industry ("renewables and mobility solutions industries (“Energy Services and Products"Products”) and services and products provided to non-energy industries ("(“Aerospace and Defense Technologies"Technologies”). Our Unallocated Expenses are those not associated with a specific business segment.

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Consolidated revenue and profitability information are as follows:
Three Months EndedNine Months Ended
(dollars in thousands)Sep 30, 2020Sep 30, 2019Jun 30, 2020Sep 30, 2020Sep 30, 2019
Revenue$439,743 $497,647 $427,216 $1,403,627 $1,487,314 
Gross Margin29,651 49,061 42,537 118,940 118,631 
Gross Margin %%10 %10 %%%
Operating Income (Loss)(60,620)(5,194)(5,182)(446,559)(36,543)
Operating Income (Loss) %(14)%(1)%(1)%(32)%(2)%

Three Months EndedSix Months Ended
(dollars in thousands)Jun 30, 2021Jun 30, 2020Mar 31, 2021Jun 30, 2021Jun 30, 2020
Revenue$498,199 $427,216 $437,553 $935,752 $963,884 
Gross Margin68,397 42,537 56,657 125,054 89,289 
Gross Margin %14 %10 %13 %13 %%
Operating Income (Loss)22,819 (5,182)13,783 36,602 (385,939)
Operating Income (Loss) %%(1)%%%(40)%

We generate a material amount of our consolidated revenue from contracts for services in the U.S. Gulf of Mexico in our Offshore Projects GroupOPG segment, which is usually more active in the second and third quarters, as compared to the rest of the year. The European operations of our Integrity Management & Digital SolutionsIMDS segment are also seasonally more active in the second and third quarters. Revenue in our Subsea Robotics segment is subject to seasonal variations in demand, with our first quarter generally being the low quarter of the year. The level of our Subsea Robotics seasonality depends on the number of Remotely Operated Vehicles ("ROVs"(“ROVs”) we have engaged in vessel-based subsea infrastructure inspection, maintenance, repair and installation, which is more seasonal than drilling support. Revenue in each of our Manufactured Products and Aerospace and Defense TechnologiesADTech segments generally has not been seasonal.

We had operating lossesincome of $60.6$23 million, $5.2$14 million and $5.2$37 million in the three-month periods ended SeptemberJune 30, 2020, September2021 and March 31, 2021, and the six-month period ended June 30, 20192021, respectively. We had operating losses of $5.2 million and $386 million in the three- and six-month periods ended June 30, 2020, respectively, and $447 million and $37 million in the nine-month periods ended September 30, 2020 and September 30, 2019, respectively. Included in our operating lossesincome and loss for the ninethree months ended SeptemberJune 30, 2021, June 30, 2020 and March 31, 2021 were certain charges of $458$1.4 million, $5.7 million and $1.3 million, respectively. Included in our operating income and loss for the six months ended June 30, 2021 and 2020, were certain charges of $2.7 million and $391 million, respectively. These charges were primarily due to market conditions requiring impairment of certain of our assets along with other costs we recognized as we adapted our geographic footprint and staffing levels to the conditions of the markets we serve. Charges included in the nine months ended September 30, 2020serve and are summarized as follows:
For the nine months ended September 30, 2020
(in thousands)Subsea RoboticsManufactured ProductsOffshore Projects GroupIntegrity Management & Digital SolutionsAerospace and Defense TechnologiesUnallocated ExpensesTotal
Charges for the effects of:
Long-lived assets impairments$— $61,074 $7,522 $167 $— $— $68,763 
Long-lived assets write-offs7,328 — 7,243 — — — 14,571 
Inventory write-downs7,038 — — — 7,038 
Goodwill impairment102,118 52,263 66,285 123,214 — — 343,880 
Other4,834 5,755 7,947 3,850 545 455 23,386 
Total charges$121,318 $119,092 $88,997 $127,231 $545 $455 $457,638 

For the three months ended June 30, 2021
(in thousands)Subsea RoboticsManufactured ProductsOffshore Projects GroupIntegrity Management & Digital SolutionsAerospace and Defense TechnologiesUnallocated ExpensesTotal
Charges for the effects of:
Loss on sale of asset$— $— $— $— $— $1,415 $1,415 
Total charges$ $ $ $ $ $1,415 $1,415 
For the three months ended June 30, 2020 *
(in thousands)Subsea RoboticsManufactured ProductsOffshore Projects GroupIntegrity Management & Digital SolutionsAerospace and Defense TechnologiesUnallocated ExpensesTotal
Charges for the effects of:
Other$1,380 $1,212 $1,405 $1,536 $— $175 5,708 
Total charges$1,380 $1,212 $1,405 $1,536 $ $175 $5,708 
* Recast to reflect segment changes.
For the three months ended March 31, 2021
(in thousands)Subsea RoboticsManufactured ProductsOffshore Projects GroupIntegrity Management & Digital SolutionsAerospace and Defense TechnologiesUnallocated ExpensesTotal
Charges for the effects of:
Other$395 $537 $149 $217 $10 $— 1,308 
Total charges$395 $537 $149 $217 $10 $ $1,308 

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For the six months ended June 30, 2021
(in thousands)Subsea RoboticsManufactured ProductsOffshore Projects GroupIntegrity Management & Digital SolutionsAerospace and Defense TechnologiesUnallocated ExpensesTotal
Charges for the effects of:
Loss on sale of asset$— $— $— $— $— $1,415 $1,415 
Other395 537 149 217 10 — 1,308 
Total charges$395 $537 $149 $217 $10 $1,415 $2,723 

For the six months ended June 30, 2020 *
(in thousands)Subsea RoboticsManufactured ProductsOffshore Projects GroupIntegrity Management & Digital SolutionsAerospace and Defense TechnologiesUnallocated ExpensesTotal
Charges for the effects of:
Long-lived assets impairments$— $61,074 $7,522 $167 $— $— $68,763 
Long-lived assets write-offs7,328 — — — — — 7,328 
Goodwill impairment102,118 11,388 66,285 123,214 — — 303,005 
Other$2,299 $3,196 $2,621 $3,767 $— $455 12,338 
Total charges$111,745 $75,658 $76,428 $127,148 $ $455 $391,434 
* Recast to reflect segment changes.

Energy Services and Products

The primary focus of our Energy Services and Products business over the last several years has been toward leveraging our asset base and capabilities for providing services and products predominantly for offshore energy operations and subsea completions, inclusive of our customers’ operating expenses and the offshore renewable energy market.

The following table that follows sets forthout the revenue gross margin and operating income (loss)profitability for the business segments within our Energy Services and Products business segments for the periods indicated.business. In the Subsea Robotics section of the table that follows, "ROV“ROV days available"available” includes all days from the first day that an ROV is placed into service until the ROV is retired. All days duringin this period are considered available days, including periods when an ROV is undergoing maintenance or repairs. Our ROVs do not have scheduled maintenance or repair that requires significant time when the ROVs are not available for utilization.
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Three Months EndedNine Months EndedThree Months EndedSix Months Ended
(dollars in thousands)(dollars in thousands)Sep 30, 2020Sep 30, 2019 *Jun 30, 2020 *Sep 30, 2020Sep 30, 2019 *(dollars in thousands)Jun 30, 2021Jun 30, 2020 *Mar 31, 2021Jun 30, 2021Jun 30, 2020 *
Subsea RoboticsSubsea RoboticsSubsea Robotics
Revenue$119,617 $151,492 $119,234 $378,621 $432,548 Revenue$141,371 $119,234 $119,119 $260,490 $259,004 
Gross Margin13,378 26,783 21,324 54,175 65,829 Gross Margin31,767 21,324 24,078 55,845 40,797 
Operating Income (Loss)2,127 15,457 11,662 (80,294)33,277 Operating Income (Loss)21,710 11,662 14,619 36,329 (82,421)
Operating Income (Loss) %%10 %10 %(21)%%Operating Income (Loss) %15 %10 %12 %14 %(32)%
ROV Days Available23,000 25,392 22,750 68,500 74,904 ROV Days Available22,750 22,750 22,469 45,219 45,500 
ROV Days Utilized13,601 15,146 13,501 41,955 43,511 ROV Days Utilized14,005 13,501 11,887 25,892 28,354 
ROV Utilization59 %60 %59 %61 %58 %ROV Utilization62 %59 %53 %57 %62 %
    
Manufactured ProductsManufactured ProductsManufactured Products
Revenue110,416 114,487 100,570 377,520 334,488 Revenue79,127 100,570 86,825 165,952 267,104 
Gross Margin11,242 9,145 13,679 42,870 32,076 Gross Margin8,391 13,679 10,004 18,395 31,628 
Operating Income (Loss)(38,198)(2,158)3,865 (100,471)1,070 Operating Income (Loss)790 3,865 2,753 3,543 (62,273)
Operating Income (Loss) %(35)%(2)%%(27)%— %Operating Income (Loss) %%%%%(23)%
Backlog at End of Period318,000 582,000 380,000 318,000 582,000 Backlog at End of Period315,000 380,000 248,000 315,000 380,000 
Offshore Projects GroupOffshore Projects GroupOffshore Projects Group
Revenue73,212 89,115 73,840 221,306 289,193 Revenue107,951 73,840 89,234 197,185 148,094 
Gross Margin(1,633)8,337 3,170 3,632 20,163 Gross Margin14,566 3,170 15,111 29,677 5,265 
Operating Income (Loss)(12,282)(34)(4,135)(95,740)(2,792)Operating Income (Loss)7,996 (4,135)8,813 16,809 (83,458)
Operating Income (Loss) %(17)%— %(6)%(43)%(1)%Operating Income (Loss) %%(6)%10 %%(56)%
Integrity Management & Digital SolutionsIntegrity Management & Digital SolutionsIntegrity Management & Digital Solutions
Revenue53,933 65,332 53,969 172,631 198,057 Revenue64,070 53,969 54,048 118,118 118,698 
Gross Margin7,129 6,612 5,455 22,376 21,494 Gross Margin10,462 5,455 8,209 18,671 15,247 
Operating Income (Loss)793 (1,721)(1,825)(122,567)(3,669)Operating Income (Loss)4,721 (1,825)2,474 7,195 (123,360)
Operating Income (Loss) %%(3)%(3)%(71)%(2)%Operating Income (Loss) %%(3)%%%(104)%
Total Energy Services and ProductsTotal Energy Services and ProductsTotal Energy Services and Products
Revenue$357,178 $420,426 $347,613 $1,150,078 $1,254,286 Revenue$392,519 $347,613 $349,226 $741,745 $792,900 
Gross Margin30,116 50,877 43,628 123,053 139,562 Gross Margin65,186 43,628 57,402 122,588 92,937 
Operating Income (Loss)(47,560)11,544 9,567 (399,072)27,886 Operating Income (Loss)35,217 9,567 28,659 63,876 (351,512)
Operating Income (Loss) %(13)%%%(35)%%Operating Income (Loss) %%%%%(44)%
* Recast to reflect segment changes.* Recast to reflect segment changes.* Recast to reflect segment changes.

In general, our Energy Services and Products business focuses on supplying services and products to the oil and gas industry, and to a lesser extent, the offshore energy industry. Since the downturn in oil prices in mid-2014, we have experienced lower activity levelsrenewables and reduced pricing. In 2019, oil prices stabilized, resulting in increased demand and higher utilization for our energy-related businesses, with slightly improved pricing through the first quarter of 2020.mobility solutions industries. The adverse impacts of the COVID-19 pandemic and the resultingassociated supply and demand imbalance along with lower crude oil prices are resultinghave resulted in lower levels of activity and profitability. As we expect a recovery will continue to take time to restore profitability and generate satisfactory returns, we have been reviewing our operating model’staken action and implemented cost structure and aggressively implementing cost reductions.improvement initiatives.

Subsea Robotics. Our Subsea Robotics segment consists of our ROV, survey services and tooling businesses, merging our underwater robotics and automation capabilities with our subsea delivery systems. Our Subsea
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Robotics segment consists of our prior ROV segment, and ROV tooling (previously in our Subsea Products segment) and survey services (previously in our Subsea Projects segment).
We believe we are the world's largest provider of ROV services and, generally, this business segment has been the largest contributor to our Energy Services and Products business operating income. Our Subsea Robotics segment revenue reflects the utilization percentages, fleet sizes and average pricing in the respective periods. Our survey services business provides survey and positioning, and geoscience services. The following table presents revenue from ROV as a percentage of total Subsea Robotics revenue:

Three Months EndedNine Months Ended
(dollars in thousands)Sep 30, 2020Sep 30, 2019 *Jun 30, 2020 *Sep 30, 2020Sep 30, 2019 *
ROV83 %75 %83 %82 %77 %
 
Other17 %25 %17 %18 %23 %
* Recast to reflect segment changes.
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Three Months EndedSix Months Ended
 Jun 30, 2021Jun 30, 2020 *Mar 31, 2021Jun 30, 2021Jun 30, 2020 *
ROV80 %83 %78 %79 %81 %
 
Other20 %17 %22 %21 %19 %
* Recast to reflect segment changes.

During the thirdsecond quarter of 2020,2021, Subsea Robotics operating income decreasedincreased as compared to the immediately preceding quarter, primarily due to charges of $9.6 millionhigher seasonal activity for write-downs of inventoryROV, survey, and other expenses. Exclusive of those charges, Subsea Robotics operating income decreased as compared to the immediately preceding quarter,tooling services on flat revenue, primarily due to lower contributions fromstable pricing across our tooling and survey operations.business lines. Subsea Robotics operating income for the thirdsecond quarter of 2020 decreased2021 increased, as compared to the corresponding period of the prior year, as a result of fewer ROVincreased days on hire and lowerhigher average revenue per day on hire, mostly offset by lower costs per day on hire, as well as the $9.6 million of charges mentioned above.hire. Subsea Robotics operating income for the nine-monthsix-month period ended SeptemberJune 30, 2020 decreased2021 increased as compared to the corresponding period of the prior year primarily due to charges of $121$112 million in the six-month period ended June 30, 2020 for goodwill impairment, write-downs and write-offs of certain intangibles and inventory,equipment, and other expenses. Exclusive of those charges, Subsea Robotics operating income for the nine-monthsix-month period ended SeptemberJune 30, 20202021 increased on higher revenue, as compared to the corresponding period of the prior year due to lower ROV costs per day and improved execution and results for survey services, partially offset by fewer ROV days on hire andas a lowerresult of higher average revenue per day on hire.in the first half of 2021.

Our ROV fleetFleet utilization was 59%62% for the three months ended SeptemberJune 30, 20202021 as compared to 60%59% for the corresponding period of the prior year. Fleet utilization increaseddecreased to 61%57% from 58%62% for the nine-monthsix-month periods ended SeptemberJune 30, 2021 and June 30, 2020, and September 30, 2019, respectively. We added two new ROVs to our fleet duringDuring the ninesix months ended SeptemberJune 30, 20202021, we retired eight of our conventional workclass ROV systems and retired two,replaced them with five upgraded conventional workclass ROV systems and three IsurusTM workclass ROV systems (which are capable of operating in severe conditions and are ideal for renewables projects and high-speed surveys) that are currently engaged in renewables work, resulting in a total of 250 ROVs in our ROV fleet as of Septemberboth June 30, 2020, as compared to 276 ROVs in our ROV fleet as of September2021 and June 30, 2019.2020.

Manufactured Products. Our Manufactured Products segment consists of our manufactured products business (previously in our Subsea Products segment), and theme park entertainment systems and automated guided vehicles (“AGV”) (previously in our Advanced Technologies segment).

Our Manufactured Products segment includesprovides distribution systems such as production control umbilicals and connection systems made up of specialty subsea hardware, and provides turnkey solutions that include program management, engineering design, fabrication/assembly and installation to the commercial theme park industry and mobile robotics solutions, including AGVautomated guided vehicle (“AGV”) technology to a variety of industries.

Our Manufactured Products operating results in the thirdsecond quarter of 2020 were lower than those of2021 decreased when compared to the immediately preceding quarter, dueas lower revenue decreased the ability to leverage our cost base. Our Manufactured Products operating results decreased in the second quarter of 2021, as compared to the corresponding period of the prior year, primarily as a result of increased activity in subsea umbilical and hardware throughput in the second quarter of 2020 that did not occur in the second quarter of 2021. Manufactured Products operating results were higher for the six-month period ended June 30, 2021, when compared to the corresponding period of the prior year, as a result of $76 million in charges of $43 millionin the six-month period ended June 30, 2020 for goodwill impairmentand asset impairments and other expenses. Exclusive of those charges, Manufactured Products adjusted operating income during the third quarter 2020, was up slightly as compared to the second quarter 2020 on a 10% increase in revenue. Much of the revenue increase was attributed to percentage-of-completion revenue recognition on certain lower-margin project components in our umbilical manufacturing operations. During the third quarter, COVID-19 had limited impact on the energy manufacturing operations, but continued to adversely affect manufacturing timing in our non-energy entertainment operations. Manufactured Products operating income for the third quarter of 2020results decreased as compared to the corresponding period of the prior year as a result of the charges mentioned above. Manufactured Products operating income for the nine-month period ended September 30, 2020 decreased as compared to the corresponding period of the prior year primarily due to charges of $119 million for asset and goodwill impairments, and other expenses. Exclusive of charges, Manufactured Products adjusted operating income for the nine-month
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period ended September 30, 2020 increased as compared to the corresponding period of the prior year primarily due to an increaseactivity in volume and improved profitability in oursubsea umbilical and hardware related operations.throughput in the first half of 2020 that did not occur in the first half of 2021.

Our Manufactured Products backlog was $318$315 million as of SeptemberJune 30, 20202021, compared to $557$266 million as of December 31, 2019.2020. The backlog decreaseincrease was primarily attributable to reducedincreased levels of bookings in 20202021 in both our energy-related and non-energy related operations. Recent award activity has been encouraging in our energy products businesses; however, activity has continued to lag in our mobility solutions businesses. Many of our energy-related Manufactured Products customers have delayed investment decisions due to low oil demand and pricing, while many of our non-energy relatednon-energy-related customers have delayed investment decisions due to uncertainties regarding COVID-19 and the related potential operating risks. The higher throughput and lower order intake resulted in a 44% revenue replacement in the third quarter of 2020. Our book-to-bill ratio was 0.8 for the trailing 12 months, was 0.5.as compared with a book-to-bill ratio of 0.4 for the year ended December 31, 2020.

Offshore Projects Group ("OPG").Group. Our OPG segment provides a broad portfolio of integrated subsea project capabilities and solutions, including subsea installation and intervention, installation and workover control systems (“IWOCS”) and ROV workover control systems (“RWOCS”), project management vessels, offshore services,and engineering, and seabed preparation, route clearance and trenching well intervention, and installation workover control systems. Our OPG segment consists of (1) our prior Subsea Projects segment, less survey services and global data solutions, and (2) our service and rental business, less ROV tooling (previously in our Subsea Products segment). This combination brings together business units that frequently work together and promotes increased efficiency in bidding, project management, and the use of offshore technicians.services.

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Our OPG operating results were lower in the thirdsecond quarter of 2020, as compared to the immediately preceding quarter, due to charges of $13 million for asset write-offs and other expenses. Exclusive of those charges, our OPG operating results improved in the third quarter of 2020,2021, as compared to the immediately preceding quarter, on flathigher revenue. Call-out work during the third quarterOur OPG revenue was relatively consistent withhigher in the second quarter of 2020, with2021, as compared to the improved operating results benefitingimmediately preceding quarter, primarily due to benefits from the cost-outsongoing field activities on several projects in Angola and operating synergies implementeda seasonal increase in connection with our new operating model. The impacts of COVID-19 continue to delay the Angola light well intervention, project, but we are optimistic that thismaintenance and repair (“IMR”) work will begin to move forward either late in the fourth quarter 2020 or early in the first quarter 2021. OurGulf of Mexico. OPG operating results were lower in the second quarter of 2021, as compared to the immediately preceding quarter, primarily due to unplanned downtime and related costs associated with the Angola riserless light well intervention project, which was partially offset by higher IMR activity levels in the Gulf of Mexico. Our OPG operating results increased in the three months ended SeptemberJune 30, 2020,2021, compared to the corresponding period of the prior year, on higher revenue, primarily due to the start-up of field activities on the riserless light well intervention project in Angola with no comparable activity in the second quarter of 2020. Our OPG operating results improved in the six months ended June 30, 2021 compared to the corresponding period of the prior year, due to charges mentioned above. Ourof $76 million recorded in the first six months of 2020 for goodwill and asset impairments and other expenses. Exclusive of those charges, our OPG operating results were lowerhigher in the nine-monthsix-month period ended SeptemberJune 30, 2020,2021 as compared to the corresponding period of the prior year, on lower revenue combined with charges in the first and third quarters of 2020 of $89 million for asset impairments and write-offs, goodwill impairment, and other charges. Exclusive of those charges, our OPG operating results were lower in the nine-month period ended September 30, 2020, as comparedprimarily due to the corresponding period of the prior year, due to reduced activity levels in the areas of inspection, maintenanceyear-over-year contribution from our Angola riserless light well intervention campaign discussed above and repair and intervention services.higher vessel utilization.

Integrity Management & Digital Solutions ("IMDS").Solutions. OurThrough our IMDS segment combineswe provide asset integrity management, corrosion management, inspection and integrity capabilities withnondestructive testing services, principally to customers in the dataoil and gas, power generation, and petrochemical industries. We perform these services on both onshore and products from our global data solutions (“GDS”) businessoffshore facilities, both topside and maritime shipping businesses, which provides essential asset and transportation data required by customers to make informed, value‐adding decisions. Our IMDS segment consists of our prior Asset Integrity segment plus maritime shipping and our GDS business (previously in our Subsea Projects segment). The inclusion of GDS in this segment facilitates optimizedsubsea. We also provide software, digital and connectivity solutions for the energy industry and software and analytical solutions to our integrity management services.for the bulk cargo maritime industry.

Our IMDS operating results for the thirdsecond quarter of 20202021 improved as compared to the immediately preceding quarter, on flathigher revenue, improved execution,primarily due to higher seasonal activity and without the effectstart-up of non-recurring costs on certain completedseveral new multi-year projects that negatively affected second quarter 2020 operating results.IMDS'combined with continuing efficiency improvements. IMDS operating results for the three-month period ended SeptemberJune 30, 2020,2021, as compared to the corresponding period of the prior year, were higher due to nonrecurring costs on significantlycertain completed projects, other expenses of $1.5 million and lower revenue, offset by cost reductions.activity levels in the second quarter of 2020. IMDS operating results for the nine-monthsix-month period ended SeptemberJune 30, 2020,2021, as compared to the corresponding period of the prior year, were lower primarilyimproved due to charges of $127 million recorded in the first quartersix months of 2020 of $127 million for goodwill impairment and other expenses.2020. Exclusive of those charges, operating results for the nine-monthsix-month period ended SeptemberJune 30, 20202021 were higher, as compared to the corresponding period of the prior year, due to the start-up of several new customer contracts and realization of cost reductions institutedimprovements in the fourth quarter of 20192021, and nonrecurring costs on certain projects completed in the first three quarterssix months of 2020 and lower activity levels in the first six months of 2020.

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Aerospace and Defense Technologies ("ADTech").Technologies. Our ADTech segment consists of ourprovides government business (previously in our Advanced Technologies segment), focused on defense subsea technologies, marine services and products, including engineering and related manufacturing in defense and space systems.exploration activities, principally to U.S. government agencies and their prime contractors.

Revenue, gross margin and operating income (loss) information for our ADTech segment are as follows:
Three Months EndedNine Months EndedThree Months EndedSix Months Ended
(dollars in thousands)(dollars in thousands)Sep 30, 2020Sep 30, 2019 *Jun 30, 2020 *Sep 30, 2020Sep 30, 2019 *(dollars in thousands)Jun 30, 2021Jun 30, 2020 *Mar 31, 2021Jun 30, 2021Jun 30, 2020 *
RevenueRevenue$82,565 $77,221 $79,603 $253,549 $233,028 Revenue$105,680 $79,603 $88,327 $194,007 $170,984 
Gross MarginGross Margin16,668 15,960 17,313 51,466 43,234 Gross Margin24,603 17,313 22,110 46,713 34,798 
Operating Income (Loss)Operating Income (Loss)13,097 11,709 13,430 39,498 30,214 Operating Income (Loss)19,340 13,430 16,839 36,179 26,401 
Operating Income (Loss) %Operating Income (Loss) %16 %15 %17 %16 %13 %Operating Income (Loss) %18 %17 %19 %19 %15 %
* Recast to reflect segment changes.* Recast to reflect segment changes.* Recast to reflect segment changes.

Our ADTech segment operating results for the thirdsecond quarter of 20202021 were slightly lower,higher, as compared to the immediately preceding quarter, on slightly higher revenue.revenue due to project mix and favorable rate-based adjustments. Our ADTech segment operating results for the three-month period ended SeptemberJune 30, 2020 were higher, when compared to the corresponding period of the prior year, as a result of improved margins. ADTech operating results for the nine-month period ended September 30, 20202021 were higher, when compared to the corresponding period of the prior year, on higher revenue due to increased activity in defense subsea technologies. Our ADTech operating results for the six-month period ended June 30, 2021 increased on higher levels of revenue, when compared to the corresponding period of the prior year, due to increased activity in both defense subsea technologies and space systems.

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Unallocated Expenses
Our Unallocated Expenses (i.e., those not associated with a specific business segment) within gross margin consist of expenses related to our incentive and deferred compensation plans, including restricted stock units, performance units and bonuses, as well as other general expenses. Our Unallocated Expenses within operating expense consist of those expenses within gross margin plus general and administrative expenses related to corporate functions.

The following table sets forth our Unallocated Expenses for the periods indicated:information is as follows:
Three Months EndedNine Months Ended
(dollars in thousands)Sep 30, 2020Sep 30, 2019Jun 30, 2020Sep 30, 2020Sep 30, 2019
Gross margin expenses$(17,133)$(17,776)(18,404)$(55,579)$(64,165)
% of revenue%%%%%
Operating expenses(26,157)(28,447)(28,179)(86,985)(94,643)
Operating expenses % of revenue%%%%%

Three Months EndedSix Months Ended
(dollars in thousands)Jun 30, 2021Jun 30, 2020Mar 31, 2021Jun 30, 2021Jun 30, 2020
Gross margin expenses$(21,392)$(18,404)(22,855)$(44,247)$(38,446)
% of revenue%%%%%
Operating expenses(31,738)(28,179)(31,715)(63,453)(60,828)
Operating expenses % of revenue%%%%%

Our Unallocated Expenses for the thirdsecond quarter of 20202021 were lowerflat, as compared to the immediately preceding quarter and the corresponding period of the prior year, due to reduced accruals for incentive-based compensation.quarter. Our Unallocated Expenses for the nine-month periodthree- and six-month periods ended SeptemberJune 30, 20202021 were lower,higher, as compared to the corresponding periodperiods of the prior year, also primarily as a result of reducedincreased accruals for incentive-based compensation.

Other

The following table sets forth our significant financial statement items below the income (loss) from operations line.
Three Months EndedNine Months Ended
(in thousands)Sep 30, 2020Sep 30, 2019Jun 30, 2020Sep 30, 2020Sep 30, 2019
Interest income$414 $2,089 $511 $2,202 $6,541 
Interest expense, net of amounts capitalized(9,250)(11,382)(11,611)(33,323)(31,005)
Equity in income (losses) of unconsolidated affiliates131 554 674 2,002 390 
Other income (expense), net(2,836)(3,660)(3,660)(13,624)(2,934)
Provision (benefit) for income taxes7,204 7,930 5,520 (17,551)21,981 

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Three Months EndedSix Months Ended
(in thousands)Jun 30, 2021Jun 30, 2020Mar 31, 2021Jun 30, 2021Jun 30, 2020
Interest income$683 $511 $519 $1,202 $1,788 
Interest expense, net of amounts capitalized(9,729)(11,611)(10,407)(20,136)(24,073)
Equity in income (losses) of unconsolidated affiliates378 674 534 912 1,871 
Other income (expense), net(1,955)(3,660)(1,453)(3,408)(10,788)
Provision (benefit) for income taxes5,955 5,520 12,341 18,296 (24,755)

In addition to interest on borrowings, interest expense, net of amounts capitalized, includes amortization of loan costs and hedge accounting adjustments,interest rate swap gains, fees for lender commitments under our revolving credit agreement and fees for standby letters of credit and bank guarantees that banks issue on our behalf for performance bonds, bid bonds and self-insurance requirements.

Foreign currency transaction gains and losses are the principal component of other income (expense), net. In the three- and nine-monthsix-month periods ended SeptemberJune 30, 2021, we incurred foreign currency transaction gains (losses) of $(1.8) million and $(3.7) million, respectively. In the three- and six-month periods ended June 30, 2020, we incurred foreign currency transaction lossesgains of $2.5$(3.9) million and $13 million, respectively. In the three- and nine-month periods ended September 30, 2019, we incurred foreign currency transaction losses of $3.5 million and $2.8$(11) million, respectively. The currency losses in 2021 were primarily related to declining exchange rates for the Angolan kwanza relative to the U.S. dollar. The currency losses in the 2020 and 2019periods were primarily related to declining exchange rates for the Angolan kwanza and the Brazilian real relative to the U.S. dollar. We could incur further foreign currency exchange losses in Angola and Brazil if further currency devaluations occur.

Due to the economic uncertainty presented by COVID-19 and the current volatility in the oil and natural gas markets, we believe using a discrete tax provision method for the nine-month period ended September 30, 2020, based on actual earnings for the period, is a more reliable method for providing for income taxes because our annual effective tax rate as calculated under ASC 740-270 is highly sensitive to changes in estimates of total ordinary income (loss). Therefore, we do not believe a discussion of the annual effective tax rate is meaningful. TheOur tax provision is based on (1) our earnings for the period and other factors affecting the tax provision and (2) the operations of foreign branches and subsidiaries that are subject to local income and withholding taxes. Factors that affect our tax rate include our profitability levels in general and the geographicgeographical mix in the sources of our results. The effective tax rate for the nine-monthsix-month periods ended SeptemberJune 30, 20202021 and 20192020 was different than the federal statutory rate of 21%, primarily due to the 2020 enactment of the U.S. Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act"), the geographicgeographical mix of operating revenue and results, and changes in valuation allowances and uncertain tax positions, and other discrete items.items; therefore, we do not believe a discussion of the annual effective tax rate is meaningful. We continue to make an assertion to indefinitely reinvest the unrepatriated earnings of any foreign subsidiary that would incur incremental tax consequences upon the distribution of such earnings.
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In the nine-month period ended September 30,On March 27, 2020, we recognized a discrete tax benefit of $42 million, primarily related to a cash tax benefit of $33 million and a non-cash tax benefit of $9.9 million related to the CARES Act. These benefits are classified as an income tax receivableAct was signed into law in the United States. In accordance with the recently established rules and a reduction in long-term liabilities, respectively. To secure these benefits,procedures under the CARES Act, we filed a 2014 refund claim to carrybackcarry back our U.S. net operating loss generated in 2019 and amended our 2012 and 2013 federal income tax returns impacted by the net operating loss carryback. Prior to enactment of the CARES Act, such net operating losses could only be carried forward. In the nine-month period ended SeptemberAs a result, we expect to receive combined refunds of approximately $33 million, of which we have received $5.6 million as of June 30, 2019, we recognized discrete tax expense2021. The remaining refunds are classified as accounts receivable, net, in our consolidated balance sheet as of $5.1 million, primarily related to share-based compensation and valuation allowance.June 30, 2021.

Liquidity and Capital Resources

We consider our liquidity, cash flows and capital resources adequate to support our operations, capital commitments and growth initiatives. As of SeptemberJune 30, 2020,2021, we had working capital of $695$749 million, including $359$456 million of cash and cash equivalents. Additionally, we had $500 million available through our revolving credit facility under a credit agreement further described below.

Amendment No. 4 to the Credit Agreement (as defined below) provides for a $500 million revolving credit facility until October 25, 2021 and thereafter $450 million until January 25, 2023 with a group of banks. Our revolving credit facility provided under the Credit Agreement was undrawn as of SeptemberJune 30, 2020,2021, and remains undrawn as of the date of this report, and our nearest maturity of indebtedness is our $500$470 million of 2024our 4.650% Senior Notes (as defined below) due in November 2024. Given that the 2024 Notes are currently trading at market discount to principal amount, we(the “2024 Senior Notes”). We may, from time to time, complete additional, limited repurchases of theour 2024 Senior Notes, via open-market or privately negotiated repurchase transactions or otherwise, prior to their maturity date. We can provide no
assurances as to the timing of any such repurchases or whether we will complete any such repurchases at all. We do not intend to disclose further information regarding any such repurchase transactions, except to the extent required in our subsequent periodic filings on Forms 10-K or 10-Q, or unless otherwise required by applicable law.

We consider our liquidity, cash flows and capital resources to be adequate to support our existing operations and capital commitments. However, given the uncertainty in the rapidly changing market and economic conditions related to the COVID-19 outbreak, we will continue to evaluate the nature and extent of the impact to our business and financial position.

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Cash flows for the ninesix months ended SeptemberJune 30, 20202021 and 20192020 are summarized as follows:
Nine Months Ended
(in thousands)Sep 30, 2020Sep 30, 2019
Changes in Cash:
Net Cash Provided by Operating Activities$32,363 $112,167 
Net Cash Used in Investing Activities(38,714)(120,046)
Net Cash Used in Financing Activities(1,725)(2,320)
Effect of exchange rates on cash(6,802)(3,737)
Net Increase (Decrease) in Cash and Cash Equivalents$(14,878)$(13,936)

Six Months Ended
(in thousands)Jun 30, 2021Jun 30, 2020
Changes in Cash:
Net Cash Provided by Operating Activities$48,823 $5,368 
Net Cash Used in Investing Activities(12,157)(35,317)
Net Cash Used in Financing Activities(32,284)(1,947)
Effect of exchange rates on cash(311)(8,250)
Net Increase (Decrease) in Cash and Cash Equivalents$4,071 $(40,146)

Operating activities

Our primary sources and uses of cash flows from operating activities for the ninesix months ended SeptemberJune 30, 20202021 and 20192020 are as follows:
Nine Months Ended
(in thousands)Sep 30, 2020Sep 30, 2019
Cash Flows from Operating Activities:
Net income (loss)$(471,751)$(85,532)
Non-cash items, net556,046 148,453 
Accounts receivable and contract assets87,999 51,629 
Inventory19,179 (10,765)
Current liabilities(158,496)(340)
Other changes(614)8,722 
Net Cash Provided by (Used in) Operating Activities$32,363 $112,167 

Six Months Ended
(in thousands)Jun 30, 2021Jun 30, 2020
Cash Flows from Operating Activities:
Net income (loss)$(3,124)$(392,386)
Non-cash items, net70,037 459,072 
Accounts receivable and contract assets(63,072)63,724 
Inventory12,107 14,297 
Current liabilities41,820 (135,019)
Other changes(8,945)(4,320)
Net Cash Provided by (Used in) Operating Activities$48,823 $5,368 
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The increasedecrease in cash related to accounts receivable and contract assets in the ninesix months ended SeptemberJune 30, 20202021 reflects the timing of project milestones and customer payments. The increase in cash related to inventory in the nine months ended September 30, 2020 corresponds with a decrease in our backlog. The decrease in cash related to current liabilities in the ninesix months ended SeptemberJune 30, 20202021 reflects the timing of vendor payments lowerand higher contract liabilities due to a decreasean increase in deferred customer prepayments, and theincreased accruals for annual employee incentive payments related to attainment of specific performance goals in prior periods.goals.

Investing activities

Our capital expenditures of $46$23 million were lower during the first ninesix months of 2020,2021, as compared to $129$38 million in the first ninesix months of 2019,2020, as a result of actions we have taken beginning in 2020 to reduce costs and preserve liquidity.

For 2020,2021, we expect our capital expenditures to be in the range of $50 million to $60$70 million. This includes approximately $15$35 million to $20$40 million of maintenance capital expenditures and $35$15 million to $40$30 million of growth capital expenditures.

We previously had several deepwater vessels under long-term charter. The last of our long-term charters expired in March 2018. With the current vessel market conditions, we have entered into some minimum-day,our philosophy is to attempt to charter vessels for specific projects on a back-to-back basis or short-term time charter party agreements and, for specific projects, we continue to charter on a back-to-back basisarrangements with the vessel owners. This generally minimizes our contract exposure by closely matching our obligations with our revenue.

Financing activities

In the ninesix months ended SeptemberJune 30, 2020,2021, we used $1.7$32 million of cash in financing activities.activities primarily due to repurchases of approximately $31 million in aggregate principal amount of the 2024 Senior Notes at par in open market transactions. In the ninesix months ended SeptemberJune 30, 2019,2020, we used $2.3$1.9 million in financing activities.

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As of SeptemberJune 30, 2020,2021, we had long-term debt in the principal amount of $800$770 million outstanding and $500 million available under our revolving credit facility provided under the Credit Agreement.

In October 2014, we entered into a credit agreement (as amended, the "Credit Agreement"“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 (as defined and discussed below), and cash on hand.

In February 2018, we entered into Agreement and Amendment No. 4 to the Credit Agreement ("(“Amendment No. 4"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.

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
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restrictive agreements. We are also subject to a maximum adjusted total Capitalization Ratio (as defined in the Credit Agreement and which stipulates that, among other items, we exclude any impacts associated with current and prior period impairments) of 55%. The Credit Agreement includes customary events of default and associated remedies. As of SeptemberJune 30, 2020,2021, we were in compliance with all the covenants set forth in the Credit Agreement. As of September 30, 2020, we had no borrowings outstanding under the Revolving Credit Facility and the option of utilizing the entire $500 million of available borrowing capacity under the Revolving Credit Facility while remaining in compliance with the maximum adjusted Capitalization Ratio.

In November 2014, we completed the public offering of $500 million aggregate principal amount of 4.650%our 2024 Senior Notes due 2024 (the "2024 Senior Notes").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“2028 Senior Notes"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 2028 Senior Notes at specified redemption prices. In thethree months ended June 30, 2021, we repurchased approximately $31 million in aggregate principal amount of the 2024 Senior Notes at par in open market transactions. The aggregate purchase price included accrued and unpaid interest to the repurchase date of $0.3 million. We recorded loss on extinguishment of debt of less than $0.1 million for fees associated with the repurchases.

In December 2014, our Board of Directors approved a plan to repurchase up to 10 million shares of our common stock. In 2015, we repurchased 2.0 million shares under this plan. We have not repurchased any shares under this plan since December 2015. We account for the shares we hold in treasury under the cost method, at average cost. The timing and amount of any future repurchases will be determined by our management. We expect that any additional shares repurchased under the plan will be held as treasury stock for possible future use. The plan does not obligate us to repurchase any particular number of shares.

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Off-Balance Sheet Arrangements

We have not guaranteed any debt not reflected on our Consolidated Balance Sheets as of SeptemberJune 30, 2020,2021, and we do not have any off-balance sheet arrangements, as defined by SEC rules.

Critical Accounting Policies and Estimates

The discussion and analysis of our financial condition and results of operations are based on our consolidated financial statements, which have been prepared in conformity with accounting principles generally accepted in the United States. These principles require us to make various estimates, judgments and assumptions that affect the reported amounts in our financial statements and accompanying notes. We disclose our significant accounting policies in Notes to Consolidated Financial Statements—Note 1—"Summary of Major Accounting Policies"Policies” in this quarterly report and in our annual report on Form 10-K for the year ended December 31, 2019,2020, in Part II. Item 7. "Financial“Financial Statements and Supplementary Data—Note 1—Summary of Major Accounting Policies."

For information about our critical accounting policies and estimates, see Part II. Item 7. "Management's“Management's Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates"Estimates” in our annual report on Form 10-K for the year ended December 31, 2019.2020. As of SeptemberJune 30, 2020,2021, there have been no material changes to the judgments, assumptions and estimates upon which our critical accounting policies and estimates are based.

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Item 3.Quantitative and Qualitative Disclosures About Market Risk

We are currently exposed to certain market risks arising from transactions we have entered into in the normal course of business. These risks relate to interest rate changes and fluctuations in foreign exchange rates. Except for our exposure in Angola, we do not believe these risks are material. We have not entered into any market-risk-sensitive instruments for speculative or trading purposes. When we have a significant amount of borrowings, we typically manage our exposure to interest rate changes through the use of a combination of fixed- and floating-rate debt. See Note 7—"Debt"“Debt” in the Notes to Consolidated Financial Statements in this quarterly report for a description of our revolving credit facility and interest rates on our borrowings. We had two interest rate swaps in place relating to a total of $200 million of the 2024 Senior Notes. These agreements swapped 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%. In March 2020, we terminated these interest rate swaps. We believe significant interest rate changes would not have a material near-term impact on our future earnings or cash flows.
Because we operate in various regions in the world, we conduct a portion of our business in currencies other than the U.S. dollar. The functional currency for severalmost of our international operations is the applicable local currency. A stronger U.S. dollar against the United Kingdom pound sterling, the Norwegian kroner and the Brazilian real maycould result in lower operating income. We manage our exposure to changes in foreign exchange rates principally through arranging compensation in U.S. dollars or freely convertible currency and, to the extent possible, by limiting compensation received in other currencies to amounts necessary to meet obligations denominated in those currencies. We use the exchange rates in effect as of the balance sheet date to translate assets and liabilities as to whichwhen the functional currency is the local currency, resulting in translation adjustments that we reflect as accumulated other comprehensive income or loss in the equity section of our Consolidated Balance Sheets. We recorded net adjustments to our equity accounts of $13$6.5 million and $(33)$11 million in the three-month periods ended SeptemberJune 30, 20202021 and 2019,2020, respectively, and $(46)$3.6 million and $(27)$(60) million in the nine-monthsix-month periods ended SeptemberJune 30, 20202021 and 2019,2020, respectively. Negative adjustments reflect the net impact of the strengthening of the U.S. dollar against various foreign currencies for locations where the functional currency is not the U.S. dollar. Conversely, positive adjustments reflect the effect of a weakening U.S. dollar.

We recorded foreign currency transaction lossesgains (losses) of $2.5$(1.8) million and $13$(3.7) million in the three- and nine-monthsix-month periods ended SeptemberJune 30, 2020,2021, and $3.5$(3.9) million and $2.8$(11) million in the three- and nine-monthsix-month periods ended SeptemberJune 30, 2019,2020, respectively. Those gains (losses) are included inWe recorded foreign currency transaction losses related to the Angolan kwanza and Brazilian real as a component of other income (expense), net in our Consolidated Statements of Operations in those respective periods. As our functional currency in Angola and Brazil is the U.S. dollar, we recorded foreignForeign currency transaction lossesgains (losses) related to the Angolan kwanzaBrazilian real of less than $0.1 million in the three- and six-month periods ended June 30, 2021 and $(3.7) million and $(7.7) million in the three- and six-month periods ended June 30, 2020, respectively, were primarily due to the remeasurement of our U.S. dollar denominated liability balances to the Brazilian real. Foreign currency lossestransaction gains (losses) related to the Angolan kwanza of less than $0.1$(0.5) million and $2.0$(1.9) million in the three-monththree- and six-month periods ended SeptemberJune 30, 20202021 and 2019, respectively, and $2.2$(0.2) million and $2.6$(2.2) million in the nine-monththree- and six-month periods ended SeptemberJune 30, 2020, and 2019, respectively, were primarily due to the remeasurement of our Angolan kwanza cash balances to U.S. dollars. Foreign currency losses related to the Brazilian real of $0.7 million and $1.3 million in the three-month periods ended September 30, 2020 and 2019, respectively, and $8.4 million and $1.0 million in the nine-month periods ended September 30, 2020 and 2019, respectively, were primarily due to the remeasurement of our Brazilian real liability balances to U.S. dollars.

Any conversion of cash balances from kwanza to U.S. dollars is controlled by the central bank in Angola. During the six months ended June 30, 2021 and the year ended December 31, 2020, we were able to repatriate $3.3 million and $11 million, respectively, of cash from Angola.

As of SeptemberJune 30, 20202021 and December 31, 2019,2020, we had the equivalent of approximately $9.4$6.6 million and $6.2$4.7 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. As of June 30, 2021 and December 31, 2020, we had $6.9 million and $10 million respectively, of Angolan bonds on our Consolidated Balance Sheets. During the six-month period ended June 30, 2021, we sold a portion of these bonds for $4.5 million. 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 onin our Consolidated Balance Sheets.

We estimated the fair market value of the Angolan bonds to be $6.9 million and $10 million as of SeptemberJune 30, 20202021 and December 31, 20192020, respectively, using quoted market prices. Since the market for the Angolan bonds is not an
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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 SeptemberJune 30, 2020 and December 31, 2019, the difference between the fair market value and the carrying amount2021, we have $0.7 million in unrealized gains, net of the Angolantax, related to these bonds was immaterial.as a component of accumulated other comprehensive loss in our Consolidated Balance Sheets.
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Item 4.        Controls and Procedures

In accordance with Rules 13a-15 and 15d-15 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"“Exchange Act”), we carried out an evaluation, under the supervision and with the participation of management, including our principal executive officer and principal financial officer, of the effectiveness of our disclosure controls and procedures (as that term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based on that evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of SeptemberJune 30, 20202021 to provide reasonable assurance that information required to be disclosed in our reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms.

There has been no change in our internal control over financial reporting that occurred during the three months ended SeptemberJune 30, 20202021 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.
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PART II – OTHER INFORMATION
 
Item 1.Legal Proceedings

InFor information regarding legal proceedings, see the ordinary course of business,discussion under the caption “Litigation” in Note 8—“Commitments and Contingencies” in the Notes to Consolidated Financial Statements included in this report, which discussion 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.incorporate by reference into this Item.

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Item 1A.Risk Factors

We are subject to various risks and uncertainties in the course of our business. A discussion of material risks and uncertainties may be found under Item 1A–Risk Factors in Part I of our annual report on Form 10-K for the year ended December 31, 2019. The update to those risk factors provided under Item 1A–Risk Factors in Part II of our quarterly report on Form 10-Q for the quarter ended March 31, 2020 is incorporated by reference into this item.

Item 6.         Exhibits
Index to Exhibits
Registration or File NumberForm of ReportReport DateExhibit Number
*30101-1094510-KDec. 20003.01
*30201-109458-KMay 20083.1
*30301-109458-KMay 20143.1
*3.04 1-109458-KAug. 20203.01
31.01 
31.02 
32.01 
32.02 
101.INS
Inline XBRL Instance Document - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document.
101.SCHXBRL Taxonomy Extension Schema Document
101.CALXBRL Taxonomy Extension Calculation Linkbase Document
101.DEFXBRL Taxonomy Extension Definition Linkbase Document
101.LABXBRL Taxonomy Extension Label Linkbase Document
101.PREXBRL Taxonomy Extension Presentation Linkbase Document
104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
*Exhibit previously filed with the Securities and Exchange Commission, as indicated, and incorporated herein by reference.
Index to Exhibits
Registration or File NumberForm of ReportReport DateExhibit Number
*3.011-1094510-KDec. 20003.01
*3.021-109458-KMay 20083.1
*3.031-109458-KMay 20143.1
*3.041-109458-KAug. 20203.01
10.01+
31.01
31.02
32.01
32.02
101.INS
Inline XBRL Instance Document - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document.
101.SCHXBRL Taxonomy Extension Schema Document
101.CALXBRL Taxonomy Extension Calculation Linkbase Document
101.DEFXBRL Taxonomy Extension Definition Linkbase Document
101.LABXBRL Taxonomy Extension Label Linkbase Document
101.PREXBRL Taxonomy Extension Presentation Linkbase Document
104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
*Exhibit previously filed with the Securities and Exchange Commission, as indicated, and incorporated herein by reference.
+Management contract or compensatory plan or arrangement.


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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
 
November 2, 2020July 30, 2021/S/    RODERICK A. LARSON
DateRoderick A. Larson
President and Chief Executive Officer
(Principal Executive Officer)
November 2, 2020July 30, 2021/S/    ALAN R. CURTIS
DateAlan R. Curtis
Senior Vice President and Chief Financial Officer
(Principal Financial Officer)
November 2, 2020July 30, 2021/S/    WITLAND J. LEBLANC, JR.
DateWitland J. LeBlanc, Jr.
Vice President and Chief Accounting Officer
(Principal Accounting Officer)

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