Tidewater (TDW) 10-Q 9 Nov 21 2021 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 31, 2021
Document Information [Line Items]
Entity Central Index Key	0000098222
Entity Registrant Name	TIDEWATER INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-6311
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	72-0487776
Entity Address, Address Line One	6002 Rogerdale Road, Suite 600
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77072
City Area Code	713
Local Phone Number	470-5300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		41,279,272
Preferred Stock Purchase Rights [Member]
Document Information [Line Items]
Title of 12(b) Security	Preferred stock purchase rights
Trading Symbol	N/A
Security Exchange Name	NYSE
Warrants to Purchase Shares of Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase shares of common stock
Trading Symbol	TDW.WS
Security Exchange Name	NYSEAMER
Series B Warrants [Member]
Document Information [Line Items]
Title of 12(b) Security	Series B Warrants to purchase shares of common stock
Trading Symbol	TDW.WS.B
Security Exchange Name	NYSE
Series A Warrants [Member]
Document Information [Line Items]
Title of 12(b) Security	Series A Warrants to purchase shares of common stock
Trading Symbol	TDW.WS.A
Security Exchange Name	NYSE
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common stock, $0.001 par value per share
Trading Symbol	TDW
Security Exchange Name	NYSE

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 127,414	$ 149,933
Restricted cash	24,092	2,079
Trade and other receivables, less allowance for credit losses of $2,134 and $1,516 at September 30, 2021 and December 31, 2020, respectively	86,015	112,623
Due from affiliates, less allowance for credit losses of $70,638 and $71,800 at September 30, 2021 and December 31, 2020, respectively	68,217	62,050
Marine operating supplies	13,335	15,876
Assets held for sale	17,891	34,396
Prepaid expenses and other current assets	13,129	11,692
Total current assets	350,093	388,649
Net properties and equipment	709,324	780,318
Deferred drydocking and survey costs	40,510	56,468
Other assets	23,146	25,742
Total assets	1,123,073	1,251,177
Current liabilities:
Accounts payable	18,042	16,981
Accrued expenses	52,133	52,422
Due to affiliates	59,571	53,194
Current portion of long-term debt	140,995	27,797
Other current liabilities	29,139	32,785
Total current liabilities	299,880	183,179
Long-term debt	14,139	164,934
Other liabilities	74,442	79,792
Commitments and contingencies
Equity:
Common stock of $0.001 par value, 125,000,000 shares authorized, 41,277,377 and 40,704,984 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	41	41
Additional paid-in capital	1,375,215	1,371,809
Accumulated deficit	(639,966)	(548,931)
Accumulated other comprehensive loss	(1,289)	(804)
Total stockholders’ equity	734,001	822,115
Noncontrolling interests	611	1,157
Total equity	734,612	823,272
Total liabilities and equity	$ 1,123,073	$ 1,251,177

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	125,000,000	125,000,000
Common stock, shares issued (in shares)	41,277,377	40,704,984
Common stock, shares outstanding (in shares)	41,277,377	40,704,984
Trade Accounts Receivable [Member]
Allowance for credit losses	$ 2,134	$ 1,516
Due from Affiliate [Member]
Allowance for credit losses	$ 70,638	$ 71,800

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Revenue	$ 92,401	$ 86,467	$ 265,858	$ 305,179
Costs and expenses:
Vessel operating costs	65,344	61,784	190,627	205,383
Costs of other operating revenues	355	219	2,003	3,063
General and administrative	18,045	17,438	50,875	56,455
Depreciation and amortization	27,980	30,777	86,256	86,028
Long-lived asset impairments	2,167	1,945	2,167	67,634
Affiliate credit loss impairment expense (credit)	0	0	(1,000)	53,581
Affiliate guarantee obligation	0	0	0	2,000
(Gain) loss on asset dispositions, net	74	(520)	2,954	(7,511)
Costs and Expenses, Total	113,965	111,643	333,882	466,633
Operating loss	(21,564)	(25,176)	(68,024)	(161,454)
Other income (expense):
Foreign exchange loss	(523)	(1,153)	(951)	(2,365)
Equity in net earnings (losses) of unconsolidated companies	100	0	(1,697)	0
Dividend income from unconsolidated company	0	0	0	17,150
Interest income and other, net	148	272	179	1,084
Interest and other debt costs, net	(3,681)	(6,071)	(12,166)	(18,172)
Nonoperating Income (Expense), Total	(3,956)	(6,952)	(14,635)	(2,303)
Loss before income taxes	(25,520)	(32,128)	(82,659)	(163,757)
Income tax expense	887	5,953	8,922	3,512
Net loss	(26,407)	(38,081)	(91,581)	(167,269)
Net loss attributable to noncontrolling interests	(149)	(154)	(546)	(274)
Net loss attributable to Tidewater Inc.	$ (26,258)	$ (37,927)	$ (91,035)	$ (166,995)
Basic loss per common share (in dollars per share)	$ (0.64)	$ (0.94)	$ (2.22)	$ (4.15)
Diluted loss per common share (in dollars per share)	$ (0.64)	$ (0.94)	$ (2.22)	$ (4.15)
Weighted average common shares outstanding (in shares)	41,132	40,405	40,918	40,271
Adjusted weighted average common shares (in shares)	41,132	40,405	40,918	40,271
Vessel [Member]
Revenues:
Revenue	$ 91,634	$ 85,395	$ 261,141	$ 298,344
Product and Service, Other [Member]
Revenues:
Revenue	$ 767	$ 1,072	$ 4,717	$ 6,835

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net loss	$ (26,407)	$ (38,081)	$ (91,581)	$ (167,269)
Other comprehensive income (loss):
Change in pension plan and supplemental pension plan liability, net of tax of $0, $0.2 million, $0 and $0.4 million, respectively	(207)	525	(485)	1,342
Total comprehensive loss	$ (26,614)	$ (37,556)	$ (92,066)	$ (165,927)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Change in pension plan and supplemental pension plan liability, tax	$ 0	$ 200	$ 0	$ 400

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net loss		$ (91,581)	$ (167,269)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization		54,605	53,614
Amortization of deferred drydocking and survey costs		31,651	32,414
Amortization of debt premium and discounts		2,662	2,418
Provision for deferred income taxes		167	107
(Gain) loss on asset dispositions, net		2,954	(7,511)
Loss on debt extinguishment		59	0
Affiliate credit loss impairment expense (credit)		(1,000)	53,581
Affiliate guarantee obligation		0	2,000
Long-lived asset impairments		2,167	67,634
Stock-based compensation expense		4,199	3,959
Changes in assets and liabilities, net:
Trade and other receivables		26,608	9,434
Changes in due to/from affiliates, net		1,210	9,852
Accounts payable		1,061	(14,548)
Accrued expenses		(473)	(18,189)
Deferred drydocking and survey costs		(17,388)	(29,499)
Other, net		(8,833)	3,809
Net cash provided by operating activities		8,068	1,806
Cash flows from investing activities:
Proceeds from asset dispositions		33,956	31,498
Additions to properties and equipment		(2,583)	(4,682)
Net cash provided by investing activities		31,373	26,816
Cash flows from financing activities:
Principal payments on long-term debt		(39,259)	(33,520)
Debt modification costs		(855)	0
Debt extinguishment premium		(59)	0
Tax on share-based awards		(793)	(702)
Net cash used in financing activities		(40,966)	(34,222)
Net change in cash, cash equivalents and restricted cash		(1,525)	(5,600)
Cash, cash equivalents and restricted cash at beginning of period		155,225	227,608
Cash, cash equivalents and restricted cash at end of period	[1]	153,700	222,008
Supplemental disclosure of cash flow information:
Interest, net of amounts capitalized		10,083	16,169
Income taxes		$ 14,735	$ 9,940
[1]	Cash, cash equivalents and restricted cash at September 30, 2021 includes $2.2 million in long-term restricted cash, which is included in other assets in our condensed consolidated balance sheet.

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Unaudited) (Parentheticals) $ in Millions	Sep. 30, 2021USD ($)
Long-term restricted cash	$ 2.2

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member]Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2019	$ 0	$ 0	$ (163)	$ 0	$ 0	$ (163)	$ 40	$ 1,367,521	$ (352,526)	$ (236)	$ 1,611	$ 1,016,410
Total comprehensive income (loss)							0	0	(166,995)	1,342	(274)	(165,927)
Amortization of share-based awards							0	3,257	0	0	0	3,257
Balance at Sep. 30, 2020							40	1,370,778	(519,684)	1,106	1,337	853,577
Balance at Jun. 30, 2020							40	1,369,645	(481,757)	581	1,491	890,000
Total comprehensive income (loss)							0	0	(37,927)	525	(154)	(37,556)
Amortization of share-based awards							0	1,133	0	0	0	1,133
Balance at Sep. 30, 2020							40	1,370,778	(519,684)	1,106	1,337	853,577
Balance at Dec. 31, 2020							41	1,371,809	(548,931)	(804)	1,157	823,272
Total comprehensive income (loss)							0	0	(91,035)	(485)	(546)	(92,066)
Amortization of share-based awards							0	3,406	0	0	0	3,406
Balance at Sep. 30, 2021							41	1,375,215	(639,966)	(1,289)	611	734,612
Balance at Jun. 30, 2021							41	1,373,727	(613,708)	(1,082)	760	759,738
Total comprehensive income (loss)							0	0	(26,258)	(207)	(149)	(26,614)
Amortization of share-based awards							0	1,488	0	0	0	1,488
Balance at Sep. 30, 2021							$ 41	$ 1,375,215	$ (639,966)	$ (1,289)	$ 611	$ 734,612

Note 1 - Interim Financial Stat

Note 1 - Interim Financial Statements	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	( 1 INTERIM FINANCIAL STATEMENTS The unaudited condensed consolidated financial statements for the interim periods presented herein have been prepared in conformity with United States generally accepted accounting principles and, in the opinion of management, include all adjustments (consisting only of normal recurring adjustments) necessary for a fair statement of the unaudited condensed consolidated financial statements at the dates and for the periods indicated as required by Rule 10 01 X not 10 December 31, 2020 March 4, 2021, April 30, 2021. The unaudited condensed consolidated financial statements include the accounts of Tidewater Inc. and its subsidiaries. Intercompany balances and transactions are eliminated in consolidation. We use the equity method to account for equity investments over which we exercise significant influence but do not not

Note 2 - Recently Issued or Ado

Note 2 - Recently Issued or Adopted Accounting Pronouncements	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	( 2 RECENTLY ISSUED OR ADOPTED ACCOUNTING PRONOUNCEMENTS In July 2021, 2021 05, 842, not 1 December 15, 2021, not In May 2021, 2021 04, December 15, 2021, not In December 2019, 2019 12, 740 December 15, 2020 January 1, 2021 not In August 2018 2018 14, no December 15, 2020 January 1, 2021 not

Note 3 - Allowance for Credit L

Note 3 - Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Allowance for Credit Losses [Text Block]	( 3 ALLOWANCE FOR CREDIT LOSSES Expected credit losses are recognized on the initial recognition of our trade accounts receivable and contract assets. In each subsequent reporting period, even if a loss has not Activity in the allowance for credit losses for the nine September 30, 2021 Trade Due and Other from (In thousands) Receivables Affiliates Balance at January 1, 2021 $ 1,516 $ 71,800 Current period provision for expected credit losses 707 (1,000 ) Write offs (89 ) — Other — (162 ) Balance at September 30, 2021 $ 2,134 $ 70,638

Note 4 - Revenue Recognition

Note 4 - Revenue Recognition	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	( 4 REVENUE RECOGNITION Refer to Note ( 13 Contract Balances At September 30, 2021 At September 30, 2021 2021 2022

Note 5 - Stockholders' Equity a

Note 5 - Stockholders' Equity and Dilutive Equity Instruments	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	( 5 STOCKHOLDERS' EQUITY AND DILUTIVE EQUITY INSTRUMENTS Accumulated Other Comprehensive Income (Loss) The changes in accumulated other comprehensive income (loss) (OCI) by component, net of tax, for the three nine September 30, 2021 2020 Three Months Ended (In thousands) September 30, 2021 September 30, 2020 Balance at June 30, 2021 and 2020 $ (1,082 ) $ 581 Pension benefits recognized in OCI (207 ) 525 Balance at September 30, 2021 and 2020 $ (1,289 ) $ 1,106 Nine Months Ended (In thousands) September 30, 2021 September 30, 2020 Balance at December 31, 2020 and 2019 $ (804 ) $ (236 ) Pension benefits recognized in OCI (485 ) 1,342 Balance at September 30, 2021 and 2020 $ (1,289 ) $ 1,106 Dilutive Equity Instruments We had 2,648,775 and 2,488,752 incremental "in-the-money" warrants, restricted stock units and stock options at September 30, 2021 2020 Total shares outstanding including warrants, restricted stock units and stock options September 30, 2021 September 30, 2020 Common shares outstanding 41,277,377 40,460,982 New creditor warrants (strike price $0.001 635,663 761,395 GulfMark creditor warrants (strike price $0.01 565,155 930,027 Restricted stock units and stock options 1,447,957 797,330 Total 43,926,152 42,949,734 We also had 5,923,399 shares of “out-of-the-money” warrants outstanding at both September 30, 2021 2020 No

Note 6 - Income Taxes

Note 6 - Income Taxes	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	( 6 INCOME TAXES We use a discrete effective tax rate method to calculate taxes for interim periods instead of applying the annual effective tax rate to an estimate of the full fiscal year due to the level of volatility and unpredictability of earnings in our industry, both overall and by jurisdiction. Income tax expense for the quarter and nine September 30, 2021 The tax liabilities for uncertain tax positions are primarily attributable to permanent establishment issues related to a foreign joint venture, subpart F income inclusions and withholding taxes on foreign services. Penalties and interest related to income tax liabilities are included in income tax expense. Income tax payable is included in other current liabilities. As of December 31, 2020 September 30, 2021 Management assesses all available positive and negative evidence to permit use of existing deferred tax assets. The Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was enacted on March 27, 2020 2017 five second 2020, first 2021. With limited exceptions, we are no 2014. not

Note 7 - Affiliates Balances

Note 7 - Affiliates Balances	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Equity Method Investments and Joint Ventures Disclosure [Text Block]	( 7 AFFILIATES BALANCES We maintained the following balances with our unconsolidated affiliates: (In thousands) September 30, 2021 December 31, 2020 Due from affiliates: Angolan joint venture (Sonatide) $ 47,251 $ 41,623 Nigeria joint venture (DTDW) 20,966 20,427 68,217 62,050 Due to affiliates: Sonatide $ 38,605 $ 32,767 DTDW 20,966 20,427 59,571 53,194 Net due from affiliates $ 8,646 $ 8,856 Amounts due from Sonatide Amounts due from Sonatide represent cash received by Sonatide from customers and due to us, amounts due from customers that are expected to be remitted to us by Sonatide and costs incurred by us on behalf of Sonatide. The following table displays the activity in the due from affiliate account related to Sonatide for the period indicated: Nine Months Ended (In thousands) September 30, 2021 Due from Sonatide at December 31, 2020 $ 41,623 Revenue earned by the company through Sonatide 29,096 Less amounts received from Sonatide (19,275 ) Less amounts used to offset due to Sonatide obligations (5,177 ) Other 984 Total due from Sonatide at September 30, 2021 $ 47,251 The amounts due from Sonatide are denominated in U.S. dollars; however, the underlying third 2019, In the second 2020, September 22, 2020, not not nine September 30, 2020, After offsetting the amounts due to Sonatide, the net amount due from Sonatide at September 30, 2021 September 30, 2021 nine September 30, 2021, Amounts due to Sonatide Amounts due to Sonatide represent commissions payable and other costs paid by Sonatide on our behalf. The following table displays the activity in the due to affiliate account related to Sonatide for the period indicated: Nine Months Ended (In thousands) September 30, 2021 Due to Sonatide at December 31, 2020 $ 32,767 Plus additional commissions payable to Sonatide 2,659 Plus amounts paid by Sonatide on behalf of the company 7,811 Less amounts used to offset due from Sonatide obligations (5,177 ) Other 545 Total due to Sonatide at September 30, 2021 $ 38,605 Company operations in Angola Vessel revenues generated by our Angolan operations, percent of consolidated vessel revenues, average number of company owned vessels and average number of stacked company owned vessels of our Angolan operations for the periods indicated were as follows: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Revenues of Angolan operations (in thousands) $ 12,046 $ 10,660 $ 30,413 $ 35,086 Percent of consolidated vessel revenues 13 % 12 % 11 % 12 % Number of company owned vessels in Angola 24 24 23 26 Number of stacked company owned vessels in Angola 4 8 5 9 Amounts due from DTDW We own 40% of DTDW. Our partner, who owns 60%, is a Nigerian national. DTDW owns one September 30, 2021 no not not second 2020, September 30, 2020 Previously, DTDW had long-term debt of $4.7 million which was secured by the vessel owned by DTDW and guarantees from the DTDW partners (in proportion to their ownership interests). On April 22, 2021, 2020,

Note 8 - Employee Benefit Plans

Note 8 - Employee Benefit Plans	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Retirement Benefits [Text Block]	( 8 EMPLOYEE BENEFIT PLANS U.S. Defined Benefit Pension Plan We have a defined benefit pension plan (pension plan) that covers certain U.S. employees. The pension plan was frozen during 2010. not 2019. Supplemental Executive Retirement Plan We also support a non-contributory and non-qualified defined benefit supplemental executive retirement plan (supplemental plan) which was closed to new participants during 2010. nine September 30, 2021 2020 2021. September 30, 2021 December 31, 2020, Net Periodic Benefit Costs The net periodic benefit cost for our defined benefit pension plans and supplemental plan (referred to collectively as “Pension Benefits”) is comprised of the following components: Three Months Ended Nine Months Ended (In thousands) September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Pension Benefits: Service cost $ — $ 97 $ — $ 111 Interest cost 542 239 1,628 2,737 Expected return on plan assets (543 ) (114 ) (1,630 ) (2,208 ) Administrative expenses — 52 — 64 Settlement loss — 79 — 910 Amortization of net actuarial losses 36 5 109 (4 ) Net periodic pension cost $ 35 $ 358 $ 107 $ 1,610 The components of the net periodic pension cost, except for the service cost are included in the caption “Interest income and other, net.” Service cost are included in the caption “Vessel operating costs.”

Note 9 - Debt

Note 9 - Debt	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	( 9 DEBT The following is a summary of all debt outstanding: (In thousands) September 30, 2021 December 31, 2020 Senior Secured Notes: 8.00% August 2022 $ 135,210 $ 147,049 Troms Offshore borrowings (D): NOK denominated notes due May 2024 2,763 5,954 NOK denominated notes due January 2026 6,450 14,559 USD denominated notes due January 2027 6,887 14,744 USD denominated notes due April 2027 7,444 15,669 $ 158,754 $ 197,975 Debt premiums and discounts, net (3,620 ) (5,244 ) Less: Current portion of long-term debt (140,995 ) (27,797 ) Total long-term debt $ 14,139 $ 164,934 (A) As of September 30, 2021 December 31, 2020 2 (B) The $24.1 million restricted cash on the balance sheet at September 30, 2021 (C) During the nine September 30, 2021 (D) We pay principal and interest on these notes semi-annually. As of September 30, 2021 December 31, 2020, 2 September 30, 2021 We may one may An amendment and restatement of the Troms Offshore credit agreement was executed in December 2020 November 2020 1 2017 2 not nine 2021 fourth 2021, During the third 2021, August 2022. not 10Q Subsequent Event On October 8, 2021, October 15, 2021, November 16, 2021, November 2026

Note 10 - Commitments and Conti

Note 10 - Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	( 10 COMMITMENTS AND CONTINGENCIES Currency Devaluation and Fluctuation Risk Due to our international operations, we are exposed to foreign currency exchange rate fluctuations against the U.S. dollar. For some of our international contracts, a portion of the revenue and local expenses are incurred in local currencies with the result that we are at risk for changes in the exchange rates between the U.S. dollar and foreign currencies. We generally do not not Legal Proceedings Various legal proceedings and claims are outstanding which arose in the ordinary course of business. In the opinion of management, the amount of ultimate liability, if any, with respect to these actions, will not

Note 11 - Fair Value Measuremen

Note 11 - Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]	( 11 FAIR VALUE MEASUREMENTS Other Financial Instruments Our primary financial instruments consist of cash and cash equivalents, restricted cash, trade receivables and trade payables with book values that are considered to be representative of their respective fair values. The carrying value for cash equivalents is considered to be representative of its fair value due to the short duration and conservative nature of the cash equivalent investment portfolio. In addition, we disclose the fair value of our long-term debt in Note 9 15.

Note 12 - Properties and Equipm

Note 12 - Properties and Equipment, Accrued Expenses, Other Current Liabilities and Other Liabilities	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Other Assets Accrued Expenses Other Current Liabilities And Other Liabilities And Deferred Credits [Text Block]	( 12 PROPERTIES AND EQUIPMENT, ACCRUED EXPENSES, OTHER CURRENT LIABILITIES AND OTHER LIABILITIES As of September 30, 2021 December 31, 2020, A summary of properties and equipment is as follows: (In thousands) September 30, 2021 December 31, 2020 Properties and equipment: Vessels and related equipment $ 911,242 $ 940,175 Other properties and equipment 16,868 16,861 928,110 957,036 Less accumulated depreciation and amortization 218,786 176,718 Properties and equipment, net $ 709,324 $ 780,318 A summary of accrued expenses is as follows: (In thousands) September 30, 2021 December 31, 2020 Payroll and related payables $ 16,852 $ 17,201 Accrued vessel expenses 20,106 17,129 Accrued interest expense 2,596 3,240 Other accrued expenses 12,579 14,852 $ 52,133 $ 52,422 A summary of other current liabilities is as follows: (In thousands) September 30, 2021 December 31, 2020 Taxes payable $ 21,305 $ 23,883 Other 7,834 8,902 $ 29,139 $ 32,785 A summary of other liabilities is as follows: (In thousands) September 30, 2021 December 31, 2020 Pension liabilities $ 31,139 $ 31,736 Liability for uncertain tax positions 31,043 35,304 Other 12,260 12,752 $ 74,442 $ 79,792

Note 13 - Segment and Geographi

Note 13 - Segment and Geographic Distribution of Operations	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	( 13 SEGMENT AND GEOGRAPHIC DISTRIBUTION OF OPERATIONS The following table provides a comparison of segment revenues, vessel operating profit (loss), depreciation and amortization, and additions to properties and equipment for the three nine September 30, 2021 2020 Three Months Ended Nine Months Ended (In thousands) September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Revenues: Vessel revenues: Americas $ 24,564 $ 28,705 $ 74,269 $ 94,608 Middle East/Asia Pacific 25,633 23,280 75,675 72,091 Europe/Mediterranean 21,197 17,716 58,413 67,827 West Africa 20,240 15,694 52,784 63,818 Other operating revenues 767 1,072 4,717 6,835 $ 92,401 $ 86,467 $ 265,858 $ 305,179 Vessel operating profit (loss): Americas $ (1,770 ) $ 107 $ (8,361 ) $ 3,448 Middle East/Asia Pacific (713 ) (2,222 ) (2,300 ) (2,479 ) Europe/Mediterranean (2,866 ) (3,883 ) (12,873 ) (4,086 ) West Africa (3,724 ) (10,168 ) (15,846 ) (19,015 ) Other operating profit 412 853 2,714 3,772 (8,661 ) (15,313 ) (36,666 ) (18,360 ) Corporate expenses (10,662 ) (8,438 ) (27,237 ) (27,390 ) Long-lived asset impairments (2,167 ) (1,945 ) (2,167 ) (67,634 ) Affiliate credit loss impairment (expense) credit — — 1,000 (53,581 ) Affiliate guarantee obligation — — — (2,000 ) Gain (loss) on asset dispositions, net (74 ) 520 (2,954 ) 7,511 Operating loss $ (21,564 ) $ (25,176 ) $ (68,024 ) $ (161,454 ) Depreciation and amortization: Americas $ 7,290 $ 8,076 $ 22,679 $ 23,645 Middle East/Asia Pacific 6,370 6,332 19,771 17,504 Europe/Mediterranean 6,834 8,248 21,543 21,860 West Africa 6,609 7,330 19,759 20,484 Corporate 877 791 2,504 2,535 $ 27,980 $ 30,777 $ 86,256 $ 86,028 Additions to properties and equipment: Americas $ — $ (10 ) $ — $ (10 ) Middle East/Asia Pacific — 5 (42 ) 1,188 Europe/Mediterranean 146 (13 ) 739 913 West Africa 99 (11 ) 653 667 Corporate 477 636 1,233 1,924 $ 722 $ 607 $ 2,583 $ 4,682 The following table provides a comparison of total assets at September 30, 2021 December 31, 2020 (In thousands) September 30, 2021 December 31, 2020 Total assets: Americas $ 293,998 $ 338,649 Middle East/Asia Pacific 184,580 226,422 Europe/Mediterranean 289,123 302,214 West Africa 235,249 242,825 Corporate 120,123 141,067 $ 1,123,073 $ 1,251,177

Note 14 - Restructuring Charges

Note 14 - Restructuring Charges	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	( 14 RESTRUCTURING CHARGES In the fourth 2018, four nine September 30, 2021 Lease (In thousands) Exit Costs Total Balance at December 31, 2020 $ 3,335 $ 3,335 General and administrative charges 163 163 Cash payments (1,800 ) (1,800 ) Balance at September 30, 2021 $ 1,698 $ 1,698 Activity for the lease exit and severance liabilities for the nine September 30, 2020 Lease (In thousands) Exit Costs Severance Total Balance at December 31, 2019 $ 4,109 $ 272 $ 4,381 General and administrative charges 198 1,076 1,274 Cash payments (720 ) (1,274 ) (1,994 ) Balance at September 30, 2020 $ 3,587 $ 74 $ 3,661

Note 15 - Asset Dispositions, A

Note 15 - Asset Dispositions, Assets Held for Sale and Asset Impairments	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Asset Impairment Charges [Text Block]	( 15 ASSET DISPOSITIONS, ASSETS HELD FOR SALE AND ASSET IMPAIRMENTS In the fourth 2019, first 2020, 2020, December 31, 2020. nine 2021, two nine two September 30, 2021 nine 2021 three nine 2020. 2021 third nine 2021 nine 2020 During the nine September 30, 2021 2020, 3 two third 2021 second 2020. not The following table presents the activity in our asset held for sale account for the periods indicated: Three Months Ended (In thousands, except for number of vessels data) Number of Vessels September 30, 2021 Number of Vessels September 30, 2020 Beginning balance 14 $ 17,214 46 $ 29,064 Additions 2 4,089 — — Sales (1 ) (1,250 ) (22 ) (9,901 ) Transfers (1 ) (250 ) — — Impairment — (1,912 ) — — Ending balance 14 17,891 24 $ 19,163 Nine Months Ended (In thousands, except for number of vessels data) Number of Vessels September 30, 2021 Number of Vessels September 30, 2020 Beginning balance 23 $ 34,396 46 $ 39,287 Additions 2 4,089 22 65,812 Sales (9 ) (15,432 ) (44 ) (20,247 ) Transfers (2 ) (3,250 ) — — Impairment — (1,912 ) — (65,689 ) Ending balance 14 $ 17,891 24 $ 19,163 We evaluated our inventory as of September 30, 2021 2020, 3 In early 2020, 19 March, 19 19 first 2020. 19 first 2020 2020 first nine 2021. 19 In the first second 2020, may March 31, 2020 June 30, 2020, 1 360, not third 2020, 19 fourth 2020 first nine 2021 not not 1 September 30, 2021

Note 3 - Allowance for Credit_2

Note 3 - Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Financing Receivable, Allowance for Credit Loss [Table Text Block]	Trade Due and Other from (In thousands) Receivables Affiliates Balance at January 1, 2021 $ 1,516 $ 71,800 Current period provision for expected credit losses 707 (1,000 ) Write offs (89 ) — Other — (162 ) Balance at September 30, 2021 $ 2,134 $ 70,638

Note 5 - Stockholders' Equity_2

Note 5 - Stockholders' Equity and Dilutive Equity Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Three Months Ended (In thousands) September 30, 2021 September 30, 2020 Balance at June 30, 2021 and 2020 $ (1,082 ) $ 581 Pension benefits recognized in OCI (207 ) 525 Balance at September 30, 2021 and 2020 $ (1,289 ) $ 1,106 Nine Months Ended (In thousands) September 30, 2021 September 30, 2020 Balance at December 31, 2020 and 2019 $ (804 ) $ (236 ) Pension benefits recognized in OCI (485 ) 1,342 Balance at September 30, 2021 and 2020 $ (1,289 ) $ 1,106
Schedule of Total Shares Outstanding Including Warrants and Restricted Stock Units [Table Text Block]	Total shares outstanding including warrants, restricted stock units and stock options September 30, 2021 September 30, 2020 Common shares outstanding 41,277,377 40,460,982 New creditor warrants (strike price $0.001 635,663 761,395 GulfMark creditor warrants (strike price $0.01 565,155 930,027 Restricted stock units and stock options 1,447,957 797,330 Total 43,926,152 42,949,734

Note 7 - Affiliates Balances (T

Note 7 - Affiliates Balances (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Related Party Transactions [Table Text Block]	(In thousands) September 30, 2021 December 31, 2020 Due from affiliates: Angolan joint venture (Sonatide) $ 47,251 $ 41,623 Nigeria joint venture (DTDW) 20,966 20,427 68,217 62,050 Due to affiliates: Sonatide $ 38,605 $ 32,767 DTDW 20,966 20,427 59,571 53,194 Net due from affiliates $ 8,646 $ 8,856
Schedule of Amounts Due From Affiliate [Table Text Block]	Nine Months Ended (In thousands) September 30, 2021 Due from Sonatide at December 31, 2020 $ 41,623 Revenue earned by the company through Sonatide 29,096 Less amounts received from Sonatide (19,275 ) Less amounts used to offset due to Sonatide obligations (5,177 ) Other 984 Total due from Sonatide at September 30, 2021 $ 47,251
Schedule of Amoutns Due to Affiliate [Table Text Block]	Nine Months Ended (In thousands) September 30, 2021 Due to Sonatide at December 31, 2020 $ 32,767 Plus additional commissions payable to Sonatide 2,659 Plus amounts paid by Sonatide on behalf of the company 7,811 Less amounts used to offset due from Sonatide obligations (5,177 ) Other 545 Total due to Sonatide at September 30, 2021 $ 38,605
Equity Method Investments [Table Text Block]	Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Revenues of Angolan operations (in thousands) $ 12,046 $ 10,660 $ 30,413 $ 35,086 Percent of consolidated vessel revenues 13 % 12 % 11 % 12 % Number of company owned vessels in Angola 24 24 23 26 Number of stacked company owned vessels in Angola 4 8 5 9

Note 8 - Employee Benefit Pla_2

Note 8 - Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Net Benefit Costs [Table Text Block]	Three Months Ended Nine Months Ended (In thousands) September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Pension Benefits: Service cost $ — $ 97 $ — $ 111 Interest cost 542 239 1,628 2,737 Expected return on plan assets (543 ) (114 ) (1,630 ) (2,208 ) Administrative expenses — 52 — 64 Settlement loss — 79 — 910 Amortization of net actuarial losses 36 5 109 (4 ) Net periodic pension cost $ 35 $ 358 $ 107 $ 1,610

Note 9 - Debt (Tables)

Note 9 - Debt (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	(In thousands) September 30, 2021 December 31, 2020 Senior Secured Notes: 8.00% August 2022 $ 135,210 $ 147,049 Troms Offshore borrowings (D): NOK denominated notes due May 2024 2,763 5,954 NOK denominated notes due January 2026 6,450 14,559 USD denominated notes due January 2027 6,887 14,744 USD denominated notes due April 2027 7,444 15,669 $ 158,754 $ 197,975 Debt premiums and discounts, net (3,620 ) (5,244 ) Less: Current portion of long-term debt (140,995 ) (27,797 ) Total long-term debt $ 14,139 $ 164,934

Note 12 - Properties and Equi_2

Note 12 - Properties and Equipment, Accrued Expenses, Other Current Liabilities and Other Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Property, Plant and Equipment [Table Text Block]	(In thousands) September 30, 2021 December 31, 2020 Properties and equipment: Vessels and related equipment $ 911,242 $ 940,175 Other properties and equipment 16,868 16,861 928,110 957,036 Less accumulated depreciation and amortization 218,786 176,718 Properties and equipment, net $ 709,324 $ 780,318
Schedule Of Accrued Cost And Expenses [Table Text Block]	(In thousands) September 30, 2021 December 31, 2020 Payroll and related payables $ 16,852 $ 17,201 Accrued vessel expenses 20,106 17,129 Accrued interest expense 2,596 3,240 Other accrued expenses 12,579 14,852 $ 52,133 $ 52,422
Other Current Liabilities [Table Text Block]	(In thousands) September 30, 2021 December 31, 2020 Taxes payable $ 21,305 $ 23,883 Other 7,834 8,902 $ 29,139 $ 32,785
Other Liabilities [Table Text Block]	(In thousands) September 30, 2021 December 31, 2020 Pension liabilities $ 31,139 $ 31,736 Liability for uncertain tax positions 31,043 35,304 Other 12,260 12,752 $ 74,442 $ 79,792

Note 13 - Segment and Geograp_2

Note 13 - Segment and Geographic Distribution of Operations (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three Months Ended Nine Months Ended (In thousands) September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Revenues: Vessel revenues: Americas $ 24,564 $ 28,705 $ 74,269 $ 94,608 Middle East/Asia Pacific 25,633 23,280 75,675 72,091 Europe/Mediterranean 21,197 17,716 58,413 67,827 West Africa 20,240 15,694 52,784 63,818 Other operating revenues 767 1,072 4,717 6,835 $ 92,401 $ 86,467 $ 265,858 $ 305,179 Vessel operating profit (loss): Americas $ (1,770 ) $ 107 $ (8,361 ) $ 3,448 Middle East/Asia Pacific (713 ) (2,222 ) (2,300 ) (2,479 ) Europe/Mediterranean (2,866 ) (3,883 ) (12,873 ) (4,086 ) West Africa (3,724 ) (10,168 ) (15,846 ) (19,015 ) Other operating profit 412 853 2,714 3,772 (8,661 ) (15,313 ) (36,666 ) (18,360 ) Corporate expenses (10,662 ) (8,438 ) (27,237 ) (27,390 ) Long-lived asset impairments (2,167 ) (1,945 ) (2,167 ) (67,634 ) Affiliate credit loss impairment (expense) credit — — 1,000 (53,581 ) Affiliate guarantee obligation — — — (2,000 ) Gain (loss) on asset dispositions, net (74 ) 520 (2,954 ) 7,511 Operating loss $ (21,564 ) $ (25,176 ) $ (68,024 ) $ (161,454 ) Depreciation and amortization: Americas $ 7,290 $ 8,076 $ 22,679 $ 23,645 Middle East/Asia Pacific 6,370 6,332 19,771 17,504 Europe/Mediterranean 6,834 8,248 21,543 21,860 West Africa 6,609 7,330 19,759 20,484 Corporate 877 791 2,504 2,535 $ 27,980 $ 30,777 $ 86,256 $ 86,028 Additions to properties and equipment: Americas $ — $ (10 ) $ — $ (10 ) Middle East/Asia Pacific — 5 (42 ) 1,188 Europe/Mediterranean 146 (13 ) 739 913 West Africa 99 (11 ) 653 667 Corporate 477 636 1,233 1,924 $ 722 $ 607 $ 2,583 $ 4,682
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	(In thousands) September 30, 2021 December 31, 2020 Total assets: Americas $ 293,998 $ 338,649 Middle East/Asia Pacific 184,580 226,422 Europe/Mediterranean 289,123 302,214 West Africa 235,249 242,825 Corporate 120,123 141,067 $ 1,123,073 $ 1,251,177

Note 14 - Restructuring Charg_2

Note 14 - Restructuring Charges (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	Lease (In thousands) Exit Costs Total Balance at December 31, 2020 $ 3,335 $ 3,335 General and administrative charges 163 163 Cash payments (1,800 ) (1,800 ) Balance at September 30, 2021 $ 1,698 $ 1,698 Lease (In thousands) Exit Costs Severance Total Balance at December 31, 2019 $ 4,109 $ 272 $ 4,381 General and administrative charges 198 1,076 1,274 Cash payments (720 ) (1,274 ) (1,994 ) Balance at September 30, 2020 $ 3,587 $ 74 $ 3,661

Note 15 - Asset Dispositions,_2

Note 15 - Asset Dispositions, Assets Held for Sale and Asset Impairments (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Disclosure of Long Lived Assets Held-for-sale [Table Text Block]	Three Months Ended (In thousands, except for number of vessels data) Number of Vessels September 30, 2021 Number of Vessels September 30, 2020 Beginning balance 14 $ 17,214 46 $ 29,064 Additions 2 4,089 — — Sales (1 ) (1,250 ) (22 ) (9,901 ) Transfers (1 ) (250 ) — — Impairment — (1,912 ) — — Ending balance 14 17,891 24 $ 19,163 Nine Months Ended (In thousands, except for number of vessels data) Number of Vessels September 30, 2021 Number of Vessels September 30, 2020 Beginning balance 23 $ 34,396 46 $ 39,287 Additions 2 4,089 22 65,812 Sales (9 ) (15,432 ) (44 ) (20,247 ) Transfers (2 ) (3,250 ) — — Impairment — (1,912 ) — (65,689 ) Ending balance 14 $ 17,891 24 $ 19,163

Note 3 - Allowance for Credit_3

Note 3 - Allowance for Credit Losses - Schedule for Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Affiliate credit loss impairment expense (credit)	$ 0	$ 0	$ (1,000)	$ 53,581
Trade Accounts Receivable [Member]
Balance			1,516
Affiliate credit loss impairment expense (credit)			707
Write offs			(89)
Other			0
Balance	2,134		2,134
Due from Affiliate [Member]
Balance			71,800
Affiliate credit loss impairment expense (credit)			(1,000)
Write offs			0
Other			(162)
Balance	$ 70,638		$ 70,638

Note 4 - Revenue Recognition (D

Note 4 - Revenue Recognition (Details Textual) - Vessel [Member] $ in Millions	Sep. 30, 2021USD ($)
Prepaid Expenses and Other Current Assets [Member]
Contract with Customer, Asset, after Allowance for Credit Loss, Current, Total	$ 0.9
Other Assets [Member]
Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent, Total	4.1
Other Current Liabilities [Member]
Contract with Customer, Liability, Current	$ 0.7

Note 5 - Stockholders' Equity_3

Note 5 - Stockholders' Equity and Dilutive Equity Instruments (Details Textual) - $ / shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Out-of-the-money Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)	5,923,399	5,923,399
Series A Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 57.06	$ 57.06
Series B Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	62.28	62.28
GLF Equity Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 100	$ 100
In-the-money Warrants and Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	2,648,775	2,488,752

Note 5 - Stockholders' Equity_4

Note 5 - Stockholders' Equity and Dilutive Equity Instruments - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Balance	$ 759,738	$ 890,000	$ 823,272	$ 1,016,410
Balance	734,612	853,577	734,612	853,577
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(1,082)	581	(804)	(236)
Pension benefits recognized in OCI	(207)	525	(485)	1,342
Balance	$ (1,289)	$ 1,106	$ (1,289)	$ 1,106

Note 5 - Stockholders' Equity_5

Note 5 - Stockholders' Equity and Dilutive Equity Instruments - Dilutive Equity Instruments (Details) - shares	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Common stock, shares outstanding (in shares)	41,277,377	40,704,984	40,460,982
Total (in shares)	43,926,152		42,949,734
Restricted Stock Units and Stock Options [Member]
Common stock shares reserved (in shares)	1,447,957		797,330
New Creditor Warrants [Member]
Common stock shares reserved (in shares)	635,663		761,395
GulfMark Creditor Warrants [Member]
Common stock shares reserved (in shares)	565,155		930,027

Note 5 - Stockholders' Equity_6

Note 5 - Stockholders' Equity and Dilutive Equity Instruments - Dilutive Equity Instruments (Details) (Parentheticals) - $ / shares	Sep. 30, 2021	Sep. 30, 2020
New Creditor Warrants [Member]
Strike price per common share (in dollars per share)	$ 0.001	$ 0.001
GulfMark Creditor Warrants [Member]
Strike price per common share (in dollars per share)	$ 0.01	$ 0.01

Note 6 - Income Taxes (Details

Note 6 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2021	Dec. 31, 2020
Deferred Tax Assets, Net, Total		$ 162.1	$ 137
Deferred Tax Assets, Valuation Allowance, Total		$ 165.7	$ 140.4
Income Tax Benefit, Cares Act	$ 6.9
Open Tax Year		2014 2015 2016 2017 2018 2019 2020 2021

Note 7 - Affiliates Balances (D

Note 7 - Affiliates Balances (Details Textual) $ in Thousands	Apr. 22, 2021USD ($)	Jun. 22, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020	Sep. 03, 2021USD ($)	Apr. 21, 2021USD ($)
Accounts Receivable, Credit Loss Expense (Reversal)			$ 0	$ 0		$ (1,000)	$ 53,581
Number of Vessels						139		149
Repayments of Secured Debt						$ 39,259	$ 33,520
Sonatide Marine Ltd [Member]
Proceeds from Dividends Received		$ 17,200
Accounts Receivable, Credit Loss Expense (Reversal)					$ 41,500
Sonatide [Member]
Accounts Receivable, Credit Loss Expense (Reversal)						(1,000)
Due From Affiliate, Net of Due to Affiliate			8,600			8,600
Cash, Ending Balance									$ 11,200
Accounts Receivable, after Allowance for Credit Loss, Current, Total			$ 9,500			$ 9,500
DTDW [Member]
Accounts Receivable, Credit Loss Expense (Reversal)					12,100
Equity Method Investment, Ownership Percentage			40.00%			40.00%
Equity Method Investment, Ownership Percentage by Other Owners			60.00%			60.00%
Number of Vessels						1
Secured Long-term Debt, Noncurrent										$ 4,700
Repayments of Secured Debt	$ 2,000
Sonatide Marine Ltd [Member]
Dividends, Total					$ 35,000
Sonangol [Member] | Sonatide Marine Ltd [Member]
Proceeds from Dividends Received		$ 17,800

Note 7 - Affiliates Balances -

Note 7 - Affiliates Balances - Balances with Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Due from related parties	$ 68,217	$ 62,050
Due to related parties	59,571	53,194
Net due from affiliates	8,646	8,856
Sonatide [Member]
Due from related parties	47,251	41,623
Due to related parties	38,605	32,767
DTDW [Member]
Due from related parties	20,966	20,427
Due to related parties	$ 20,966	$ 20,427

Note 7 - Affiliates Balances _2

Note 7 - Affiliates Balances - Amounts Due From Affiliate (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Due from Sonatide	$ 62,050
Less amounts used to offset due to Sonatide obligations	(5,177)
Total due from Sonatide	68,217
Sonatide [Member]
Due from Sonatide	41,623
Revenue earned by the company through Sonatide	29,096
Less amounts received from Sonatide	(19,275)
Other	984
Total due from Sonatide	$ 47,251

Note 7 - Affiliates Balances _3

Note 7 - Affiliates Balances - Amounts Due to Affiliate (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Due to Sonatide	$ 53,194
Total due to Sonatide	59,571
Sonatide [Member]
Due to Sonatide	32,767
Plus additional commissions payable to Sonatide	2,659
Plus amounts paid by Sonatide on behalf of the company	7,811
Less amounts used to offset due from Sonatide obligations	(5,177)
Other	545
Total due to Sonatide	$ 38,605

Note 7 - Affiliates Balances _4

Note 7 - Affiliates Balances - Company Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues of Angolan operations (in thousands)	$ 92,401	$ 86,467	$ 265,858	$ 305,179
Sonatide [Member] | ANGOLA
Revenues of Angolan operations (in thousands)	$ 12,046	$ 10,660	$ 30,413	$ 35,086
Percent of consolidated vessel revenues	13.00%	12.00%	11.00%	12.00%
Number of company owned vessels in Angola	24	24	23	26
Number of stacked company owned vessels in Angola	4	8	5	9

Note 8 - Employee Benefit Pla_3

Note 8 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands	9 Months Ended		21 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Dec. 31, 2020
Pension Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 0
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 1,200	$ 1,200
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	400		400
Defined Benefit Plan, Benefit Obligation, Ending Balance	$ 22,800		$ 22,800	$ 22,800

Note 8 - Employee Benefit Pla_4

Note 8 - Employee Benefit Plans - Net Periodic Benefit Costs (Details) - Pension Plan And Supplemental Plan [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 20, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Service cost	$ 0	$ 97	$ 0	$ 111
Interest cost	542	239	1,628	2,737
Expected return on plan assets	(543)	(114)	(1,630)	(2,208)
Administrative expenses	0	52	0	64
Settlement loss	0	79	0	910
Amortization of net actuarial losses	36	5	109	(4)
Net periodic pension cost	$ 35	$ 358	$ 107	$ 1,610

Note 9 - Debt (Details Textual)

Note 9 - Debt (Details Textual) - USD ($) $ in Thousands	Oct. 08, 2021	Sep. 30, 2021	Nov. 16, 2021	Dec. 31, 2020
Restricted Cash, Current		$ 24,092		$ 2,079
Troms Offshore [Member] | Senior Notes [Member] | Plan Of Reorganization [Member]
Debt Instrument, Covenant, Obligation to Prepay, Additional Amount, Maximum		45,000
Repayments of Long-term Debt, Total		23,300
Long-Term Debt, Maturity, Remainder of Fiscal Year		3,400
The 8.00% Senior Secured Notes due August 2022 [Member]
Debt Instrument, Repurchased Face Amount		11,800
Debt Instrument, Face Amount		$ 100
Debt Instrument, Interest Rate, Stated Percentage		8.00%		8.00%
The 8.00% Senior Secured Notes due August 2022 [Member] | Tender Offer [Member]
Percentage Of Proceeds From Asset Sales Net Of Commission Paid		65.00%
The 8.00% Senior Secured Notes due August 2022 [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument, Fair Value Disclosure, Total		$ 136,400		$ 141,400
Troms Offshore Borrowings [Member] | Fair Value, Inputs, Level 2 [Member] | Troms Offshore [Member]
Debt Instrument, Fair Value Disclosure, Total		$ 23,600		$ 51,600
Debt, Weighted Average Interest Rate		5.00%
Nordic Bond [Member] | Subsequent Event [Member]
Debt Instrument, Face Amount	$ 175,000
Debt Instrument, Term (Year)	5 years
Debt Instrument, Interest Rate, Stated Percentage			8.50%

Note 9 - Debt - Summary of Debt

Note 9 - Debt - Summary of Debt Outstanding (Details) - USD ($)		Sep. 30, 2021	Dec. 31, 2020
Long-term debt, gross		$ 158,754	$ 197,975
Debt premiums and discounts, net		(3,620,000)	(5,244,000)
Less: Current portion of long-term debt		(140,995,000)	(27,797,000)
Total long-term debt		14,139,000	164,934,000
The 8.00% Senior Secured Notes due August 2022 [Member]
Long-term debt, gross	[1],[2],[3]	135,210,000	147,049,000
NOK Denominated Notes Due May 2024 [Member] | Troms Offshore [Member]
Long-term debt, gross	[4]	2,763,000	5,954,000
NOK Denominated Notes Due January 2026 [Member] | Troms Offshore [Member]
Long-term debt, gross	[4]	6,450,000	14,559,000
USD Denominated Notes Due January 2027 [Member] | Troms Offshore [Member]
Long-term debt, gross	[4]	6,887,000	14,744,000
USD Denominated Notes Due April 2027 [Member] | Troms Offshore [Member]
Long-term debt, gross	[4]	$ 7,444,000	$ 15,669,000
[1]	As of September 30, 2021 and December 31, 2020 the fair value (Level 2) of the Senior Secured Notes was $136.4 million and $141.4 million, respectively.
[2]	During the nine months ended September 30, 2021, we repurchased $11.8 million of the Senior Secured Notes at a premium of $0.1 million in open market transactions.
[3]	The $24.1 million restricted cash on the balance sheet at September 30, 2021, represents approximately 65% of net proceeds from asset dispositions since the date of the last tender offer and is restricted by the terms of the Indenture.
[4]	We pay principal and interest on these notes semi-annually. As of September 30, 2021 and December 31, 2020, the aggregate fair value (Level 2) of the Troms Offshore borrowings was $23.6 million and $51.6 million, respectively. The weighted average interest rate of the Troms Offshore borrowings as of September 30, 2021 was 5.0%.

Note 9 - Debt - Summary of De_2

Note 9 - Debt - Summary of Debt Outstanding (Details) (Parentheticals)	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
The 8.00% Senior Secured Notes due August 2022 [Member]
Interest rate	8.00%	8.00%
Maturity date	Aug. 31, 2022	Aug. 31, 2022
NOK Denominated Notes Due May 2024 [Member] | Troms Offshore [Member]
Maturity date	May 31, 2024	May 31, 2024
NOK Denominated Notes Due January 2026 [Member] | Troms Offshore [Member]
Maturity date	Jan. 31, 2026	Jan. 31, 2026
USD Denominated Notes Due January 2027 [Member] | Troms Offshore [Member]
Maturity date	Jan. 31, 2027	Jan. 31, 2027
USD Denominated Notes Due April 2027 [Member] | Troms Offshore [Member]
Maturity date	Apr. 30, 2027	Apr. 30, 2027

Note 12 - Properties and Equi_3

Note 12 - Properties and Equipment, Accrued Expenses, Other Current Liabilities and Other Liabilities (Details Textual)	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Vessels	139	149
Number of Vessels, Held for Sale	14	23	46

Note 12 - Properties and Equi_4

Note 12 - Properties and Equipment, Accrued Expenses, Other Current Liabilities and Other Liabilities - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Vessels and related equipment	$ 911,242		$ 940,175
Other properties and equipment	16,868		16,861
Property, Plant and Equipment, Gross, Ending Balance	928,110		957,036
Less accumulated depreciation and amortization	218,786		176,718
Properties and equipment, net	$ 709,324	$ 780,318	$ 780,318

Note 12 - Properties and Equi_5

Note 12 - Properties and Equipment, Accrued Expenses, Other Current Liabilities and Other Liabilities - Accrued Cost and Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Payroll and related payables	$ 16,852	$ 17,201
Accrued vessel expenses	20,106	17,129
Accrued interest expense	2,596	3,240
Other accrued expenses	12,579	14,852
Accrued Liabilities, Current, Total	$ 52,133	$ 52,422

Note 12 - Properties and Equi_6

Note 12 - Properties and Equipment, Accrued Expenses, Other Current Liabilities and Other Liabilities - Summary of Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Taxes payable	$ 21,305	$ 23,883
Other	7,834	8,902
Other Liabilities, Current, Total	$ 29,139	$ 32,785

Note 12 - Properties and Equi_7

Note 12 - Properties and Equipment, Accrued Expenses, Other Current Liabilities and Other Liabilities - Other liabilities and Deferred Credits (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Pension liabilities	$ 31,139	$ 31,736
Liability for uncertain tax positions	31,043	35,304
Other	12,260	12,752
Other Liabilities, Noncurrent, Total	$ 74,442	$ 79,792

Note 13 - Segment and Geograp_3

Note 13 - Segment and Geographic Distribution of Operations - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 92,401	$ 86,467	$ 265,858	$ 305,179
Corporate expenses	(113,965)	(111,643)	(333,882)	(466,633)
Long-lived asset impairments	(2,167)	(1,945)	(2,167)	(67,634)
Affiliate credit loss impairment (expense) credit	0	0	1,000	(53,581)
Affiliate guarantee obligation	0	0	0	(2,000)
Gain (loss) on asset dispositions, net	(74)	520	(2,954)	7,511
Operating loss	(21,564)	(25,176)	(68,024)	(161,454)
Depreciation and amortization	27,980	30,777	86,256	86,028
Additions to properties and equipment	722	607	2,583	4,682
Operating Segments [Member]
Revenue	92,401	86,467	265,858	305,179
Gross profit	(8,661)	(15,313)	(36,666)	(18,360)
Corporate, Non-Segment [Member]
Corporate expenses	(10,662)	(8,438)	(27,237)	(27,390)
Depreciation and amortization	877	791	2,504	2,535
Additions to properties and equipment	477	636	1,233	1,924
Americas [Member] | Operating Segments [Member]
Depreciation and amortization	7,290	8,076	22,679	23,645
Reductions to properties and equipment	0	(10)	0	(10)
Middle East and Asia Pacific [Member] | Operating Segments [Member]
Depreciation and amortization	6,370	6,332	19,771	17,504
Reductions to properties and equipment	0		(42)
Additions to properties and equipment		5		1,188
Europe and Mediterranean [Member] | Operating Segments [Member]
Depreciation and amortization	6,834	8,248	21,543	21,860
Reductions to properties and equipment		(13)
Additions to properties and equipment	146		739	913
West Africa [Member] | Operating Segments [Member]
Depreciation and amortization	6,609	7,330	19,759	20,484
Reductions to properties and equipment		(11)
Additions to properties and equipment	99		653	667
Vessel [Member]
Revenue	91,634	85,395	261,141	298,344
Vessel [Member] | Americas [Member] | Operating Segments [Member]
Revenue	24,564	28,705	74,269	94,608
Gross profit	(1,770)	107	(8,361)	3,448
Vessel [Member] | Middle East and Asia Pacific [Member] | Operating Segments [Member]
Revenue	25,633	23,280	75,675	72,091
Gross profit	(713)	(2,222)	(2,300)	(2,479)
Vessel [Member] | Europe and Mediterranean [Member] | Operating Segments [Member]
Revenue	21,197	17,716	58,413	67,827
Gross profit	(2,866)	(3,883)	(12,873)	(4,086)
Vessel [Member] | West Africa [Member] | Operating Segments [Member]
Revenue	20,240	15,694	52,784	63,818
Gross profit	(3,724)	(10,168)	(15,846)	(19,015)
Product and Service, Other [Member]
Revenue	767	1,072	4,717	6,835
Product and Service, Other [Member] | Operating Segments [Member]
Revenue	767	1,072	4,717	6,835
Gross profit	$ 412	$ 853	$ 2,714	$ 3,772

Note 13 - Segment and Geograp_4

Note 13 - Segment and Geographic Distribution of Operations - Comparison of Total Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Total assets	$ 1,123,073	$ 1,251,177
Operating Segments [Member] | Americas [Member]
Total assets	293,998	338,649
Operating Segments [Member] | Middle East and Asia Pacific [Member]
Total assets	184,580	226,422
Operating Segments [Member] | Europe and Mediterranean [Member]
Total assets	289,123	302,214
Operating Segments [Member] | West Africa [Member]
Total assets	235,249	242,825
Corporate, Non-Segment [Member]
Total assets	$ 120,123	$ 141,067

Note 14 - Restructuring Charg_3

Note 14 - Restructuring Charges - Activity for Lease Exit and Severance Liabilities (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Balance		$ 4,381
General and administrative charges		1,274
Cash payments		(1,994)
Balance		3,661
Lease Exit [Member]
Balance	$ 3,335	4,109
General and administrative charges	163	198
Cash payments	(1,800)	(720)
Balance	1,698	3,587
Employee Severance [Member]
Balance	3,335	272
General and administrative charges	163	1,076
Cash payments	(1,800)	(1,274)
Balance	$ 1,698	$ 74

Note 15 - Asset Dispositions,_3

Note 15 - Asset Dispositions, Assets Held for Sale and Asset Impairments (Details Textual) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019
Number of Vessels, Held for Sale	14	14		23	46
Number of Vessels, Held for Sale, Addition		2		32
Number of Vessels, Held for Sale, Sold		9		53
Asset Held For Sale, Net Book Value		$ 17,900		$ 34,400
Number of Vessels, Held for Sale, Reactivation		2
Number of Active Vessels Sold		10	3
Proceeds from Sale of Productive Assets, Total		$ 33,956	$ 31,498
Gain (Loss) on Sale of Assets and Asset Impairment Charges		(3,000)	7,500
Proceeds from Sale of Vessels		34,000
Impairment of Assets Transferred to Held for Sale		1,900	65,700
Impairment Charge Recaptured	$ 1,700
Fair Value, Inputs, Level 3 [Member]
Impairment of Long-Lived Assets to be Disposed of		1,900	$ 1,900
Third-party Operator, Family Member of Director [Member]
Proceeds from Sale of Productive Assets, Total		11,400
Gain (Loss) on Sale of Assets and Asset Impairment Charges		$ 4,300

Note 15 - Asset Dispositions,_4

Note 15 - Asset Dispositions, Asset Held for Sale and Asset Impairments - Activity in Assets Held for Sale (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Beginning balance			23	46	46
Additions			2		32
Sales			(9)		(53)
Transfers	(1)	0	(2)	0
Transfers	$ (250)	$ 0	$ (3,250)	$ 0
Ending balance	14		14		23
Vessels Held for Sale [Member]
Beginning balance	14	46	23	46	46
Beginning balance	$ 17,214	$ 29,064	$ 34,396	$ 39,287	$ 39,287
Additions	2	0	2	22
Additions	$ 4,089	$ 0	$ 4,089	$ 65,812
Sales	(1)	(22)	(9)	(44)
Sales	$ (1,250)	$ (9,901)	$ (15,432)	$ (20,247)
Impairment	$ (1,912)	$ 0	$ (1,912)	$ (65,689)
Ending balance	14	24	14	24	23
Ending balance	$ 17,891	$ 19,163	$ 17,891	$ 19,163	$ 34,396