SEACOR Marine (SMHI) 10-Q 9 Aug 18 2018 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 09, 2018
Document Information [Line Items]
Entity Registrant Name	SEACOR Marine Holdings Inc.
Entity Central Index Key	1,690,334
Trading Symbol	smhi
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		20,441,590
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 86,239	$ 110,234
Restricted cash	1,951	2,317
Receivables:
Trade, net of allowance for doubtful accounts of $4,001 and $4,039 in 2018 and 2017, respectively	57,658	45,616
Other	16,039	12,341
Inventories	3,666	3,756
Prepaid expenses and other	4,090	3,026
Total current assets	169,643	177,290
Property and Equipment:
Historical cost	1,287,855	1,179,836
Accumulated depreciation	(564,477)	(560,160)
	723,378	619,676
Construction in progress	82,274	70,157
Net property and equipment	805,652	689,833
Investments, at Equity, and Advances to 50% or Less Owned Companies	115,424	92,169
Construction Reserve Funds	38,152	45,361
Other Assets	3,667	3,851
	1,132,538	1,008,504
Current Liabilities:
Current portion of long-term debt	22,858	22,858
Accounts payable and accrued expenses	23,774	24,024
Due to SEACOR Holdings	746	1,358
Accrued wages and benefits	4,986	5,087
Accrued income taxes	4,352	4,290
Accrued capital, repair and maintenance expenditures	24,462	19,618
Deferred revenues	10,227	10,104
Other current liabilities	12,442	11,879
Total current liabilities	103,847	99,218
Long-Term Debt	348,912	292,041
Conversion Option Liability on Convertible Senior Notes	21,886	6,832
Deferred Income Taxes	49,789	55,506
Deferred Gains and Other Liabilities	27,289	31,741
Total liabilities	551,723	485,338
SEACOR Marine Holdings Inc. stockholders’ equity:
Common stock, $.01 par value, 60,000,000 shares authorized; 20,441,590 and 17,675,356 shares issued in 2018 and 2017, respectively	204	177
Additional paid-in capital	413,754	303,996
Retained earnings	150,585	216,511
Shares held in treasury	(54)
Accumulated other comprehensive loss, net of tax	(13,129)	(12,493)
	551,360	508,191
Noncontrolling interests in subsidiaries	29,455	14,975
Total equity	580,815	523,166
	$ 1,132,538	$ 1,008,504

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Trade receivables, allowance for doubtful accounts	$ 4,001	$ 4,039
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares issued (in shares)	20,441,590	17,675,356

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Statements of Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Operating Revenues	$ 60,701	$ 42,323	$ 112,422	$ 76,627
Costs and Expenses:
Operating	48,820	44,482	89,993	77,861
Administrative and general	15,532	21,705	28,339	33,531
Depreciation and amortization	18,406	14,633	37,918	27,136
	82,758	80,820	156,250	138,528
Gains (Losses) on Asset Dispositions and Impairments, Net	1,055	(6,318)	(1,588)	(1,499)
Operating Loss	(21,002)	(44,815)	(45,416)	(63,400)
Other Income (Expense):
Interest income	352	275	568	1,125
Interest expense	(6,489)	(4,546)	(12,622)	(7,728)
SEACOR Holdings management fees		(1,283)		(3,208)
SEACOR Holdings guarantee fees	(7)	(75)	(19)	(151)
Marketable security (losses) gains, net		(109)		11,629
Derivative losses, net	(2,668)	(213)	(14,184)	(302)
Foreign currency losses, net	(818)	(1,094)	(679)	(1,283)
Other, net				(1)
	(9,630)	(7,045)	(26,936)	81
Loss Before Income Tax Benefit and Equity in Earnings of 50% or Less Owned Companies	(30,632)	(51,860)	(72,352)	(63,319)
Income Tax Benefit	(4,724)	(13,800)	(14,548)	(17,222)
Loss Before Equity in Earnings of 50% or Less Owned Companies	(25,908)	(38,060)	(57,804)	(46,097)
Equity in (Losses) Earnings of 50% or Less Owned Companies, Net of Tax	(721)	1,571	(513)	2,009
Net Loss	(26,629)	(36,489)	(58,317)	(44,088)
Net Loss attributable to Noncontrolling Interests in Subsidiaries	(1,605)	(2,497)	(4,460)	(2,701)
Net Loss attributable to SEACOR Marine Holdings Inc.	$ (25,024)	$ (33,992)	$ (53,857)	$ (41,387)
Basic and Diluted Loss Per Common Share and Warrants of SEACOR Marine Holdings Inc. (in dollars per share)	$ (1.25)	$ (1.93)	$ (3)	$ (2.34)
Basic and Diluted Weighted Average Common Shares and Warrants Outstanding: (in shares)	19,978,516	17,631,567	17,967,242	17,651,352

Unaudited Condensed Consolidat5

Unaudited Condensed Consolidated Comprehensive Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net loss	$ (26,629)	$ (36,489)	$ (58,317)	$ (44,088)
Other Comprehensive Loss:
Foreign currency translation (losses) gains	(2,785)	1,865	(873)	2,784
Derivative (losses) gains on cash flow hedges	(63)	(429)	68	(438)
	(2,807)	1,620	(634)	2,730
Income tax benefit	(8)	(533)	(35)	(887)
	(2,815)	1,087	(669)	1,843
Comprehensive Loss	(29,444)	(35,402)	(58,986)	(42,245)
Comprehensive Loss attributable to Noncontrolling Interests in Subsidiaries	(1,715)	(2,399)	(4,493)	(2,505)
Comprehensive Loss attributable to SEACOR Marine Holdings Inc.	(27,729)	(33,003)	(54,493)	(39,740)
Interest Expense [Member]
Other Comprehensive Loss:
Reclassification of derivative losses on cash flow hedges	(1)	37		49
Reclassification of derivative losses on cash flow hedges	1	(37)		(49)
Equity Method Investments [Member]
Other Comprehensive Loss:
Reclassification of derivative losses on cash flow hedges	(42)	(147)	(171)	(335)
Reclassification of derivative losses on cash flow hedges	$ 42	$ 147	$ 171	$ 335

Unaudited Condensed Consolidat6

Unaudited Condensed Consolidated Statement Of Changes In Equity - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2017	$ 177	$ 303,996		$ 216,511	$ (12,493)	$ 14,975	$ 523,166
Impact of adoption of accounting principle at Dec. 31, 2017				(12,069)			(12,069)
December 31, 2017 as adjusted at Dec. 31, 2017	177	303,996		204,442	(12,493)	14,975	511,097
Issuance of Common Stock	23	42,973					42,996
Issuance of Warrants		62,809					62,809
Amortization of employee share awards		1,896					1,896
Exercise of options	1	812					813
Exercise of Warrants	3		(3)
Restricted stock vesting			(51)				(51)
Director share awards		893					893
Acquisition of consolidated joint venture						(12,037)	(12,037)
Issuance of noncontrolling interests		375				31,010	31,385
Net loss				(53,857)		(4,460)	(58,317)
Other comprehensive loss					(636)	(33)	(669)
Balance at Jun. 30, 2018	$ 204	$ 413,754	$ (54)	$ 150,585	$ (13,129)	$ 29,455	$ 580,815

Unaudited Condensed Consolidat7

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities
Net loss	$ (58,317)	$ (44,088)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	37,918	27,136
Deferred financing costs amortization	501	1,752
Restricted stock amortization	1,896	89
Restricted stock vesting	(51)
Director share awards	893
Debt discount amortization	2,719	2,192
Amortization of deferred gains against charter expense	(4,019)	(4,100)
Bad debt expense	10	579
Loss from equipment sales, retirements or impairments	1,588	1,499
Gains from sale of marketable securities, net		(11,629)
Proceeds from sale of securities		51,877
Derivative losses	14,184	302
Cash settlement on derivative transactions, net	(150)	(188)
Currency loss	679	1,283
Deferred income taxes	(17,395)	(5,560)
Equity earnings (losses), net	513	(2,009)
Dividends received from equity investees	1,324	1,642
Changes in Operating Assets and Liabilities:
Accounts receivables	(15,414)	10,572
Other assets	(466)	3,583
Accounts payable and accrued liabilities	(99)	18,804
Net cash (used in) provided by operating activities	(33,686)	53,736
Cash Flows from Investing Activities:
Purchases of property and equipment	(15,548)	(28,803)
Cash settlements on derivative transactions, net		(324)
Proceeds from disposition of property and equipment	3,526	9,549
Net change in construction reserve fund	7,209	10,410
Investments in and advances to 50% or less owned companies	(25,560)	(4,216)
Return of investments and advances from 50% or less owned companies		7,350
Proceeds from sale of investment in equity investees		89
Payments received on third party notes receivable, net	99
Cash assumed on consolidation of 50% or less owned companies		1,943
Business acquisitions, net of cash acquired		(9,751)
Net cash used in investing activities	(30,274)	(13,753)
Cash Flows from Financing Activities:
Payments on long-term debt	(35,202)	(3,973)
Proceeds from issuance of long-term debt, net of issue costs	18,471	3,223
SMHI Restricted Stock		(2,656)
Purchase of subsidiary shares from noncontrolling interests		(3,693)
Proceeds from exercise of stock options and Warrants	813
Issuance of stock	42,996
Issuance of Warrants	12,809
Net cash provided by (used in) financing activities	39,887	(7,099)
Effects of Exchange Rate Changes on Cash and Cash Equivalents	(288)	1,127
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(24,361)	34,011
Cash, Restricted Cash and Cash Equivalents, Beginning of Period	112,551	118,771
Cash, Restricted Cash and Cash Equivalents, End of Period	$ 88,190	$ 152,782

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation and Accounting Policies	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Basis of Accounting [Text Block]	1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES The condensed consolidated financial statements include the accounts of SEACOR Marine Holdings Inc. and its consolidated subsidiaries (the “Company”). In the opinion of management, all adjustments (consisting of normal recurring adjustments) have been made to fairly present the unaudited condensed consolidated financial statements for the periods indicated. Results of operations for the interim periods presented are not Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the Company’s financial statements and related notes thereto included in the Company's Annual Report on Form 10 December 31, 2017. Unless the context otherwise indicates, any reference in this Quarterly Report on Form 10 10 not 10 31, 2017. SEACOR Marine was previously a subsidiary of SEACOR Holdings Inc. (along with its consolidated subsidiaries, other than SEACOR Marine and its subsidiaries, collectively referred to as “SEACOR Holdings”). On June 1, 2017, $0.01 May 22, 2017 ( two Recently Adopted Accounting Standards. May 2014, 2014 09, Revenue from Contracts with Customers (Topic 606 January 1, 2018 not not In November 2016, 2016 18, Statement of Cash Flows (Topic 230 , January 1, 2018. not 2016 18, Revenue Recognition. Lease Revenues . (see Note 15 ). Revenues from Customers. one three red (see Note 15 ). Revenue that does not ties. Contract liabilities, i six June 30 201 8 201 7 Balance at beginning of period $ 10,104 $ 6,953 Revenues deferred during the period 1,673 2,337 Revenues recognized during the period (1,550) — Balance at end of period $ 10,227 $ 9,290 As of June 30, 2018, $6.8 August 1 7, 2012, t 11 May 19, 2012 As of June 30, 2018, $3.2 not Property and Equipment. not may As of June 30, 2018, Offshore Support Vessels: Wind farm utility vessels 10 All other offshore support vessels (excluding wind farm utility) 20 Equipment maintenance and repair costs and the costs of routine overhauls, drydockings and inspections performed on vessels and equipment are charged to operating expense as incurred. Expenditures that extend the useful life or improve the marketing and commercial characteristics of equipment as well as major renewals and improvements to other properties are capitalized. Certain interest costs incurred during the construction of equipment are capitalized as part of the assets’ carrying values and are amortized over such assets’ estimated useful lives. During the six June 30, 2018, $1.0 Impairment of Long-Lived Assets. may not six June 30, 2018, $3.0 four Impairment of 50% 50% may six June 30, 2018, $1.2 one 50% Income Taxes. During the six June 30, 2018, the Company's effective income tax rate of 20.1% was primarily due to taxes provided on income attributable to noncontrolling interests, foreign sourced income not subject to U.S. income taxes, foreign taxes not six June 30, 2017, the Company’s effective income tax rate of 27.2% was primarily due to losses of foreign subsidiaries not benefited. Deferred Gains. 50% third 50% six June 30 2018 2017 Balance at beginning of period $ 25,006 $ 33,910 Amortization of deferred gains included in operating expenses as a reduction to rental expense (4,019 ) (4,099) Other adjustments (250 ) (364 ) Balance at end of period $ 20,737 $ 29,447 Accumulated Other Comprehensive Income (Loss). SEACOR Marine Holdings Inc. Stockholders’ Equity Noncontrolling Interests Foreign Currency Translation Adjustments Derivative Income (Losses) on Cash Flow Hedges, net Total Foreign Currency Translation Adjustments Derivative Income (Losses) on Cash Flow Hedges, net Other Comprehensive Income (Loss) December 31, 2017 $ (13,195 ) $ 702 $ (12,493 ) $ (1,357 ) $ 1 Other comprehensive income (loss) (847 ) 246 (601 ) (26 ) (7 ) $ (634 ) Income tax expense — (35 ) (35 ) — — (35 ) Six months Ended June 30, 2018 $ (14,042 ) $ 913 $ (13,129 ) $ (1,383 ) $ (6 ) $ (669 ) Loss Per Share. $0.01 For the six June 30, 2018 and 2017, diluted earnings per common share of the Company excluded 2,183,708 4,070,500 common shares, respectively, issuable pursuant to the Company’s Convertible Senior Notes (see Note 4 six June 30, 2018, 196,338 694,691 outstanding stock options as the effect of their inclusion in the computation would be anti-dilutive. New Accounting Pronouncements. February 25, 2016, January 1, 2019 not In February 2018, December 2017. December 15, 2018. not In June 2018, December 15, 2018. not

Note 2 - Equipment Acquisitions

Note 2 - Equipment Acquisitions and Dispositions	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	2. EQUIPMENT ACQUISITIONS AND DISPOSITIONS During the six June 30, 2018, $18.8 six June 30, 2018 one six Note 4 nd two platform supply 3 During the six June 30, 2018, one two one one one $2.6 $2.5 $0.1 $1.4

Note 3 - Investments, at Equity

Note 3 - Investments, at Equity, and Advances to 50% or Less Owned Companies	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Equity Method Investments and Joint Ventures Disclosure [Text Block]	3. INVESTMENTS, AT EQUITY, AND ADVANCES TO 50% SEACOSCO January 17, 2018, eight $161.1 70% two March 31, 2018, five 30, 2018, one 2019. six 18 $27.5 50% six June 30, 2018, $25.6 e as the remaining vessel t are d $27.5 SEACOR Grant DIS. June 30, 2018, $0.4 $1.2 zero Guarantees. one 50% June 30, 2018, $0.5 In addition, as of June 30, 2018, two 50% first $1.2

Note 4 - Long-term Debt

Note 4 - Long-term Debt	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Long-term Debt [Text Block]	4. LONG-TERM DEBT Convertible Senior Notes. On December 1, 2015, $175.0 3.75%, December 1, 2022, 23.26 $1,000 $0.01 On May 2, 2018, $50 1,886,792 k (to facilitate compliance with the provisions of the Jones Act) at an exercise price of $0.01 37.73 $1,000 $26.50 25 May 2, 2018. $125.0 3.75% 4.25% 12 December 1, 2023 June 15 December 15 MOI Joint Venture. February 8, 2018, January 18, 2018, 11 February 8, 2018, $15.0 $131.1 $116.1 $15.0 6.63% 2024, two $10.0 202 0. During the six June 30, 2018 , $10.0 72% Windcat. Du six June 30, 2018, €6.0 $7.5 $8.5 $1.0 Letters of Credit . June 30, 2018, $7.9 one $1.7

Note 5 - Income Taxes

Note 5 - Income Taxes	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	5. INCOME TAXES The following table reconciles the difference between the statutory federal income tax rate for the Company and the effective income tax rate on continuing operations for the six June 30, 2018: Statutory rate 21.0 % Noncontrolling interests (1.2 )% Foreign earnings not subject to U.S. income tax (3.0 )% Foreign taxes not creditable against U.S. income tax (2.4 )% Unrecognized tax benefit 5.4 % Other 0.3 % 20.1 % As of December 31, 2017, $3.9 December 22, 2017. $3.9 six 30, 2018,

Note 6 - Derivative Instruments

Note 6 - Derivative Instruments and Hedging Strategies	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	6. DERIVATIVE INSTRUMENTS AND HEDGING STRATEGIES Derivative instruments are classified as either assets or liabilities based on their individual fair values. The fair values of the Company’s derivative instruments as of June 30, 2018 Derivative Asset (1) Derivative Liability Derivatives designated as hedging instruments: Interest rate swap agreements (cash flow hedges) $ 436 $ 44 (2) 436 44 Derivatives not designated as hedging instruments: Conversion option liability on Convertible Senior Notes — 21,886 Interest rate swap agreements 1,104 — $ 1,540 $ 21,930 ______________________ ( 1 Included in other receivables in the accompanying condensed consolidated balance sheets. ( 2 Included in other current liabilities in the accompanying condensed consolidated balance sheets. Cash Flow Hedges. 50% 50% six June 30, 2018. June 30, 2018, 50% • Windcat Workboats had two 2021 0.03 €15.0 $17.5 • MexMar had five 2023 1.71% 2.10% $104.0 • Sea-Cat Crewzer II had an interest rate swap agreement maturing in 2019 1.52% $19.7 • Sea-Cat Crewzer had an interest rate swap agreement maturing in 2019 1.52% $17.4 Other Derivative Instruments. not six June 30 as follows (in thousands): 201 8 201 7 Conversion option liability on Convertible Senior Notes $ (15,054 ) $ 145 Forward currency exchange, option and future contracts — (56) Interest rate swap agreements 870 (391 ) $ (14,184 ) $ (302 ) The conversion option liability relates to the bifurcated embedded conversion option in the Convertible Senior Notes (see Note 4 10 7 10 31, 2017 The Company and certain of its 50% June 30, 2018, 50% • Falcon Global International had an interest rate swap agreement maturing in 2022 2.06% $53.1 • OSV Partners had two 2020 1.89% 2.27% $30.4

Note 7 - Fair Value Measurement

Note 7 - Fair Value Measurements	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Fair Value Disclosures [Text Block]	7. FAIR VALUE MEASUREMENTS The fair value of an asset or liability is the price that would be received to sell an asset or transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company utilizes a fair value hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value and defines three may Level 1 Level 2 Level 1 not Level 3 no The Company’s financial assets and liabilities as of June 30, 2018 Level 1 Level 2 Level 3 ASSETS Derivative instruments (included in other receivables) $ — $ 1,541 $ — Construction reserve funds 38,152 — — LIABILITIES Derivative instruments — 44 21,886 Level 3 Level 3 The estimated fair values of the Company’s other financial assets and liabilities as of June 30, 2018 Estimated Fair Value Carrying Amount Level 1 Level 2 Level 3 ASSETS Cash, cash equivalents and restricted cash $ 88,190 $ 88,190 $ — $ — Investments, at cost, in 50% or less owned companies (included in other assets) 132 see below LIABILITIES Long-term debt, including current portion 371,770 — 357,742 — The carrying value of cash, cash equivalents and restricted cash approximates fair value. The fair value of the Company’s long-term debt was estimated based upon quoted market prices or by using discounted cash flow analysis based on estimated current rates for similar types of arrangements. The long-term debt balance includes $121.6 not 50% not The Company’s other assets and liabilities that were measured at fair value during the six June 30, 2018 Level 1 Level 2 Level 3 ASSETS Property and equipment: Anchor handling towing supply $ — $ 2,000 $ — Liftboats — — 134,775 Property and equipment six June 30, 2018, $3.0 1 Level 2 The Level 3 Level 3 two third Level 3 two The significant unobservable inputs used in the fair value measurement for the liftboats provided by the appraisers were based on i) quotes from local shipyards, ii) economic life ranging from 25 40 45% 50%.

Note 8 - Warrants

Note 8 - Warrants	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Warrants and Rights [Text Block]	8. WARRANTS On April 26, 2018, vate placement of its Common Stock and Warrants to purchase its Common Stock (to facilitate compliance with Jones Act restrictions) for aggregate gross proceeds of $56,855,000 2,168,586 674,164 $0.01 25 April 26, 2018. As indicated in Note 4, May 2, 2018, $50.0 25 May 2, 2018. On May 31, 2018, 250,585 108 14 1,636,099 $0.01 On June 8, 2018, $0.01 38,857 635,307 $0.01 Weighted Average Exercise Price Number of Warrants Balance as of December 31, 2017 — — Warrants issued - January 1 - June 30, 2018 $ 0.01 2,560,956 Warrants exercised - January 1 - June 30, 2018 $ 0.01 (289,550 ) Balance as of June 30, 2018 $ 0.01 2,271,406

Note 9 - Stockholders' Equity

Note 9 - Stockholders' Equity	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	9. STOCKHOLDERS' EQUITY On January 1, 2018, October 24, 2016, $12.1 On February 8, 2018, fifteen six $15.0 $131.1 $10.0 On March 26, 2018, 103,213 $1.8 4 2 As indicated in Note 8, April 26, 2018, ds of $56,855,000 4 2 As indicated in Notes 4 8, May 2, 2018, $50.0 4 2

Note 10 - Noncontrolling Intere

Note 10 - Noncontrolling Interests in Subsidiaries	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Noncontrolling Interest Disclosure [Text Block]	10. NONCONTROLLING INTERESTS IN SUBSIDIARIES Noncontrolling interests in the Company’s consolidated subsidiaries were as follows (in thousands): Noncontrolling Interests June 30, 201 8 December 31, 201 7 Falcon Global Holdings 28.0% $ 26,967 $ 12,087 Windcat Workboats 12.5% 2,201 2,608 Other 1.8% 287 280 $ 29,455 $ 14,975 Falcon Global Holdings. two 15 six The total capital contributed to FGH was approximately $112.5 $43.3 $18.8 28.0%. During the six June 30, 2018, $14.4 $4.0 Windcat Workboats. June 30, 2018, $17.6 six June 30, 2018, $3.3 $0.4

Note 11 - Commitments and Conti

Note 11 - Commitments and Contingencies	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	11. COMMITMENTS AND CONTINGENCIES As of June 30, 2018, the Company’s unfunded capital commitments were $43.3 million for two fast support vessels, three supply vessels, three one $12.7 million is payable during the remainder of 2018, $21.6 million is payable during 2019 and $9.0 million is payable during 2020. The Company has indefinitely deferred an additional $20.8 million of orders with respect to two fast support vessels for which the Company had previously reported unfunded capital commitments. The delivery dates and payment of certain costs (originally scheduled for payment in 2018, 2019 and 2020 ) for such vessels are uncertain as the Company, at its option, may defer their construction for an indefinite period of time. As of June 30, 2018 one £0.9 not As of June 30, 2018, $51.6 0.5% In the normal course of its business, the Company becomes involved in various other litigation matters including, among other things, claims by third not

Note 12 - Multi-employer Pensio

Note 12 - Multi-employer Pension Plans	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	12. Merchant Navy Ratings Pension Fund (“MNRPF”). March 2017, $291.9 £221.0 July 20, 2018, second 2018 $1.19 £0.9 September 2018 four October 2018.

Note 13 - Share Based Compensat

Note 13 - Share Based Compensation	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	13. Transactions in connection with the Company's 2017 six June 30, 2018 Director stock awards granted 19,285 Restricted stock awards granted 120,600 Stock Options Activities: Outstanding as of December 31, 2017 613,700 Granted 145,991 Exercised 65,000 Outstanding as of June 30, 2018 694,691 Shares Available for future grants as of June 30, 2018 1,270,424

Note 14 - Stock Repurchases

Note 14 - Stock Repurchases	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Treasury Stock [Text Block]	14. On May 14, 2018, 2,242 $51,454 2017 not May 24, 2018, 108 $2,562 $0.01 8

Note 15 - Segment Information

Note 15 - Segment Information	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	15 . SEGMENT INFORMATION The Company’s segment presentation and basis of measurement of segment profit or loss are as previously described in the Company’s Annual Report on Form 10 December 31, 2017. United States (primarily Gulf of Mexico) Africa (primarily West Africa) Middle East and Asia Brazil, Mexico, Central and South America Europe (primarily North Sea) Total For the Three Months Ended June 30, 2018 Time Charter Statistics: Average Rates Per Day $ 10,503 $ 9,509 $ 8,226 $ 19,127 $ 4,823 $ 7,324 Fleet Utilization 23 % 88 % 82 % 57 % 76 % 62 % Fleet Available Days 3,710 1,331 2,005 416 5,066 12,528 Operating Revenues: Time charter $ 9,052 $ 11,122 $ 13,591 $ 4,556 $ 18,505 $ 56,826 Bareboat charter — — — 1,156 — 1,156 Other marine services 1,676 350 (792 ) 845 640 2,719 10,728 11,472 12,799 6,557 19,145 60,701 Direct Costs and Expenses: Operating: Personnel 4,636 4,314 4,069 1,219 10,495 24,733 Repairs and maintenance 1,529 1,663 3,576 32 2,270 9,070 Drydocking 910 910 72 11 1,209 3,112 Insurance and loss reserves 902 248 361 169 254 1,934 Fuel, lubes and supplies 900 900 922 349 1,051 4,122 Other 29 1,402 836 488 254 3,009 8,906 9,437 9,836 2,268 15,533 45,980 Direct Vessel Profit $ 1,822 $ 2,035 $ 2,963 $ 4,289 $ 3,612 14,721 Other Costs and Expenses: Operating: Leased-in equipment $ 1,856 $ 962 $ — $ — $ 22 2,840 Administrative and general 15,532 Depreciation and amortization $ 5,915 $ 2,924 $ 4,311 $ 2,280 $ 2,976 18,406 36,778 Gains on Asset Dispositions and Impairments 1,055 Operating Loss $ (21,002 ) United States (primarily Gulf of Mexico) Africa (primarily West Africa) Middle East and Asia Brazil, Mexico, Central and South America Europe (primarily North Sea) Total For the Six Months Ended June 30, 2018 Time Charter Statistics: Average Rates Per Day $ 9,740 $ 9,482 $ 8,155 $ 18,069 $ 4,984 $ 7,174 Fleet Utilization 20 % 89 % 74 % 52 % 72 % 58 % Fleet Available Days 7,760 2,591 4,137 635 10,006 25,129 Operating Revenues: Time charter $ 15,034 $ 21,916 $ 24,965 $ 5,930 $ 36,123 $ 103,968 Bareboat charter — — — 2,299 — 2,299 Other marine services 3,331 1,637 (922 ) 955 1,154 6,155 18,365 23,553 24,043 9,184 37,277 112,422 Direct Costs and Expenses: Operating: Personnel 8,628 8,387 8,091 1,595 19,708 46,409 Repairs and maintenance 2,223 3,019 6,004 337 4,560 16,143 Drydocking 1,435 912 61 11 2,950 5,369 Insurance and loss reserves 1,336 466 597 236 489 3,124 Fuel, lubes and supplies 1,393 1,569 1,956 414 2,335 7,667 Other 54 2,438 2,044 548 532 5,616 15,069 16,791 18,753 3,141 30,574 84,328 Direct Vessel Profit $ 3,296 $ 6,762 $ 5,290 $ 6,043 $ 6,703 28,094 Other Costs and Expenses: Operating: Leased-in equipment $ 3,718 $ 1,925 $ — $ — $ 22 5,665 Administrative and general 28,339 Depreciation and amortization $ 12,450 $ 5,731 $ 10,401 $ 3,499 $ 5,837 37,918 71,922 Losses on Asset Dispositions and Impairment (1,588 ) Operating Loss $ (45,416 ) As of June 30, 2018 Property and Equipment: Historical cost $ 439,026 $ 184,037 $ 317,536 $ 165,145 $ 182,111 $ 1,287,855 Accumulated depreciation (225,116 ) (57,909 ) (86,239 ) (58,078 ) (137,135 ) (564,477 ) $ 213,910 $ 126,128 $ 231,297 $ 107,067 $ 44,976 $ 723,378 United States (primarily Gulf of Mexico) Africa (primarily West Africa) Middle East and Asia Brazil, Mexico, Central and South America Europe (primarily North Sea) Total For the Three Months Ended June 30, 2017 Time Charter Statistics: Average Rates Per Day $ 9,619 $ 10,348 $ 6,580 $ — $ 4,176 $ 5,649 Fleet Utilization 13 % 67 % 55 % — % 90 % 56 % Fleet Available Days 4,063 1,123 2,067 105 5,005 12,363 Operating Revenues: Time charter $ 4,889 $ 7,786 $ 7,415 $ — $ 18,713 $ 38,803 Bareboat charter — — — 1,156 — 1,156 Other marine services 1,198 215 109 162 680 2,364 6,087 8,001 7,524 1,318 19,393 42,323 Direct Costs and Expenses: Operating: Personnel 4,183 3,428 4,147 148 8,671 20,577 Repairs and maintenance 937 3,234 3,947 116 2,191 10,425 Drydocking 310 683 358 — 900 2,251 Insurance and loss reserves 1,205 357 353 4 207 2,126 Fuel, lubes and supplies 545 704 908 27 1,006 3,190 Other 51 871 1,061 3 237 2,223 7,231 9,277 10,774 298 13,212 40,792 Direct Vessel (Loss) Profit $ (1,144 ) $ (1,276 ) $ (3,250 ) $ 1,020 $ 6,181 1,531 Other Costs and Expenses: Operating: Leased-in equipment $ 2,205 $ 969 $ 516 $ — $ — 3,690 Administrative and general 21,705 Depreciation and amortization $ 5,749 $ 2,059 $ 3,979 $ 784 $ 2,062 14,633 40,028 Losses on Asset Dispositions and Impairments (6,318 ) Operating Loss $ (44,815 ) United States (primarily Gulf of Mexico) Africa (primarily West Africa) Middle East and Asia Brazil, Mexico, Central and South America Europe (primarily North Sea) Total For the Six Months Ended June 30, 2017 Time Charter Statistics: Average Rates Per Day $ 9,808 $ 9,913 $ 6,765 $ — $ 4,294 $ 5,683 Fleet Utilization 10 % 64 % 52 % — % 81 % 51 % Fleet Available Days 8,061 2,142 3,777 195 9,955 24,130 Operating Revenues: Time charter $ 7,884 $ 13,633 $ 13,238 $ — $ 34,778 $ 69,533 Bareboat charter — — — 2,299 — 2,299 Other marine services 2,024 407 986 237 1,141 4,795 9,908 14,040 14,224 2,536 35,919 76,627 Direct Costs and Expenses: Operating: Personnel 7,313 6,036 7,270 161 16,588 37,368 Repairs and maintenance 1,674 3,778 4,523 120 3,925 14,020 Drydocking 883 1,740 516 — 2,179 5,318 Insurance and loss reserves 2,010 539 699 11 426 3,685 Fuel, lubes and supplies 855 1,263 1,432 27 1,955 5,532 Other 123 1,517 2,526 4 487 4,657 12,858 14,873 16,966 323 25,560 70,580 Direct Vessel (Loss) Profit $ (2,950 ) $ (833 ) $ (2,742 ) $ 2,213 $ 10,359 6,047 Other Costs and Expenses: Operating: Leased-in equipment $ 4,416 $ 1,939 $ 862 $ — $ 64 7,281 Administrative and general 33,531 Depreciation and amortization $ 11,349 $ 3,649 $ 6,506 $ 1,449 $ 4,183 27,136 67,948 Losses on Asset Dispositions and Impairment (1,499 ) Operating Loss $ (63,400 ) As of June 30, 2017 Property and Equipment: Historical cost $ 417,675 $ 183,661 $ 302,892 $ 78,976 $ 171,951 $ 1,155,155 Accumulated depreciation (233,758 ) (59,300 ) (83,880 ) (41,565 ) (125,319 ) (543,822 ) $ 183,917 $ 124,361 $ 219,012 $ 37,411 $ 46,632 $ 611,333 The Company’s investments in 50% June 30, 2018, 50% 50% $63.7 $51.7 50% six June 30 Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 MexMar $ 1,076 $ 1,222 $ 2,508 $ 2,589 Other (1,797 ) 349 (3,021 ) (580 ) $ (721 ) $ 1,571 $ (513 ) $ 2,009

Note 16 - Subsequent Event

Note 16 - Subsequent Event	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	16. SUBSEQUENT EVENT On July 5, 2018, 100% two $11.0 one 2013

Significant Accounting Policies

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	The condensed consolidated financial statements include the accounts of SEACOR Marine Holdings Inc. and its consolidated subsidiaries (the “Company”). In the opinion of management, all adjustments (consisting of normal recurring adjustments) have been made to fairly present the unaudited condensed consolidated financial statements for the periods indicated. Results of operations for the interim periods presented are not Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the Company’s financial statements and related notes thereto included in the Company's Annual Report on Form 10 December 31, 2017. Unless the context otherwise indicates, any reference in this Quarterly Report on Form 10 10 not 10 31, 2017. SEACOR Marine was previously a subsidiary of SEACOR Holdings Inc. (along with its consolidated subsidiaries, other than SEACOR Marine and its subsidiaries, collectively referred to as “SEACOR Holdings”). On June 1, 2017, $0.01 May 22, 2017 ( two
Recently Adopted Accounting Standards [Policy Text Block]	Recently Adopted Accounting Standards. May 2014, 2014 09, Revenue from Contracts with Customers (Topic 606 January 1, 2018 not not In November 2016, 2016 18, Statement of Cash Flows (Topic 230 , January 1, 2018. not 2016 18,
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition. Lease Revenues . (see Note 15 ). Revenues from Customers. one three red (see Note 15 ). Revenue that does not ties. Contract liabilities, i six June 30 201 8 201 7 Balance at beginning of period $ 10,104 $ 6,953 Revenues deferred during the period 1,673 2,337 Revenues recognized during the period (1,550) — Balance at end of period $ 10,227 $ 9,290 As of June 30, 2018, $6.8 August 1 7, 2012, t 11 May 19, 2012 As of June 30, 2018, $3.2 not
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment. not may As of June 30, 2018, Offshore Support Vessels: Wind farm utility vessels 10 All other offshore support vessels (excluding wind farm utility) 20 Equipment maintenance and repair costs and the costs of routine overhauls, drydockings and inspections performed on vessels and equipment are charged to operating expense as incurred. Expenditures that extend the useful life or improve the marketing and commercial characteristics of equipment as well as major renewals and improvements to other properties are capitalized. Certain interest costs incurred during the construction of equipment are capitalized as part of the assets’ carrying values and are amortized over such assets’ estimated useful lives. During the six June 30, 2018, $1.0
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets. may not six June 30, 2018, $3.0 four
Equity and Cost Method Investments, Policy [Policy Text Block]	Impairment of 50% 50% may six June 30, 2018, $1.2 one 50%
Income Tax, Policy [Policy Text Block]	Income Taxes. During the six June 30, 2018, the Company's effective income tax rate of 20.1% was primarily due to taxes provided on income attributable to noncontrolling interests, foreign sourced income not subject to U.S. income taxes, foreign taxes not six June 30, 2017, the Company’s effective income tax rate of 27.2% was primarily due to losses of foreign subsidiaries not benefited.
Deferred Gains [Policy Text Block]	Deferred Gains. 50% third 50% six June 30 2018 2017 Balance at beginning of period $ 25,006 $ 33,910 Amortization of deferred gains included in operating expenses as a reduction to rental expense (4,019 ) (4,099) Other adjustments (250 ) (364 ) Balance at end of period $ 20,737 $ 29,447
Comprehensive Income, Policy [Policy Text Block]	Accumulated Other Comprehensive Income (Loss). SEACOR Marine Holdings Inc. Stockholders’ Equity Noncontrolling Interests Foreign Currency Translation Adjustments Derivative Income (Losses) on Cash Flow Hedges, net Total Foreign Currency Translation Adjustments Derivative Income (Losses) on Cash Flow Hedges, net Other Comprehensive Income (Loss) December 31, 2017 $ (13,195 ) $ 702 $ (12,493 ) $ (1,357 ) $ 1 Other comprehensive income (loss) (847 ) 246 (601 ) (26 ) (7 ) $ (634 ) Income tax expense — (35 ) (35 ) — — (35 ) Six months Ended June 30, 2018 $ (14,042 ) $ 913 $ (13,129 ) $ (1,383 ) $ (6 ) $ (669 )
Earnings Per Share, Policy [Policy Text Block]	Loss Per Share. $0.01 For the six June 30, 2018 and 2017, diluted earnings per common share of the Company excluded 2,183,708 4,070,500 common shares, respectively, issuable pursuant to the Company’s Convertible Senior Notes (see Note 4 six June 30, 2018, 196,338 694,691 outstanding stock options as the effect of their inclusion in the computation would be anti-dilutive.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements. February 25, 2016, January 1, 2019 not In February 2018, December 2017. December 15, 2018. not In June 2018, December 15, 2018. not

Note 1 - Basis of Presentatio25

Note 1 - Basis of Presentation and Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Deferred Revenue, by Arrangement, Disclosure [Table Text Block]	201 8 201 7 Balance at beginning of period $ 10,104 $ 6,953 Revenues deferred during the period 1,673 2,337 Revenues recognized during the period (1,550) — Balance at end of period $ 10,227 $ 9,290
Property, Plant and Equipment [Table Text Block]	Offshore Support Vessels: Wind farm utility vessels 10 All other offshore support vessels (excluding wind farm utility) 20
Schedule of Deferred Gain [Table Text Block]	2018 2017 Balance at beginning of period $ 25,006 $ 33,910 Amortization of deferred gains included in operating expenses as a reduction to rental expense (4,019 ) (4,099) Other adjustments (250 ) (364 ) Balance at end of period $ 20,737 $ 29,447
Comprehensive Income (Loss) [Table Text Block]	SEACOR Marine Holdings Inc. Stockholders’ Equity Noncontrolling Interests Foreign Currency Translation Adjustments Derivative Income (Losses) on Cash Flow Hedges, net Total Foreign Currency Translation Adjustments Derivative Income (Losses) on Cash Flow Hedges, net Other Comprehensive Income (Loss) December 31, 2017 $ (13,195 ) $ 702 $ (12,493 ) $ (1,357 ) $ 1 Other comprehensive income (loss) (847 ) 246 (601 ) (26 ) (7 ) $ (634 ) Income tax expense — (35 ) (35 ) — — (35 ) Six months Ended June 30, 2018 $ (14,042 ) $ 913 $ (13,129 ) $ (1,383 ) $ (6 ) $ (669 )

Note 5 - Income Taxes (Tables)

Note 5 - Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Statutory rate 21.0 % Noncontrolling interests (1.2 )% Foreign earnings not subject to U.S. income tax (3.0 )% Foreign taxes not creditable against U.S. income tax (2.4 )% Unrecognized tax benefit 5.4 % Other 0.3 % 20.1 %

Note 6 - Derivative Instrumen27

Note 6 - Derivative Instruments and Hedging Strategies (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	Derivative Asset (1) Derivative Liability Derivatives designated as hedging instruments: Interest rate swap agreements (cash flow hedges) $ 436 $ 44 (2) 436 44 Derivatives not designated as hedging instruments: Conversion option liability on Convertible Senior Notes — 21,886 Interest rate swap agreements 1,104 — $ 1,540 $ 21,930
Derivatives Not Designated as Hedging Instruments [Table Text Block]	201 8 201 7 Conversion option liability on Convertible Senior Notes $ (15,054 ) $ 145 Forward currency exchange, option and future contracts — (56) Interest rate swap agreements 870 (391 ) $ (14,184 ) $ (302 )

Note 7 - Fair Value Measureme28

Note 7 - Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Level 1 Level 2 Level 3 ASSETS Derivative instruments (included in other receivables) $ — $ 1,541 $ — Construction reserve funds 38,152 — — LIABILITIES Derivative instruments — 44 21,886
Fair Value, by Balance Sheet Grouping [Table Text Block]	Estimated Fair Value Carrying Amount Level 1 Level 2 Level 3 ASSETS Cash, cash equivalents and restricted cash $ 88,190 $ 88,190 $ — $ — Investments, at cost, in 50% or less owned companies (included in other assets) 132 see below LIABILITIES Long-term debt, including current portion 371,770 — 357,742 —
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]	Level 1 Level 2 Level 3 ASSETS Property and equipment: Anchor handling towing supply $ — $ 2,000 $ — Liftboats — — 134,775

Note 8 - Warrants (Tables)

Note 8 - Warrants (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]	Weighted Average Exercise Price Number of Warrants Balance as of December 31, 2017 — — Warrants issued - January 1 - June 30, 2018 $ 0.01 2,560,956 Warrants exercised - January 1 - June 30, 2018 $ 0.01 (289,550 ) Balance as of June 30, 2018 $ 0.01 2,271,406

Note 10 - Noncontrolling Inte30

Note 10 - Noncontrolling Interests in Subsidiaries (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Noncontrolling Interest [Table Text Block]	Noncontrolling Interests June 30, 201 8 December 31, 201 7 Falcon Global Holdings 28.0% $ 26,967 $ 12,087 Windcat Workboats 12.5% 2,201 2,608 Other 1.8% 287 280 $ 29,455 $ 14,975

Note 13 - Share Based Compens31

Note 13 - Share Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Share-based Compensation, Activity [Table Text Block]	Director stock awards granted 19,285 Restricted stock awards granted 120,600 Stock Options Activities: Outstanding as of December 31, 2017 613,700 Granted 145,991 Exercised 65,000 Outstanding as of June 30, 2018 694,691 Shares Available for future grants as of June 30, 2018 1,270,424

Note 15 - Segment Information (

Note 15 - Segment Information (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	United States (primarily Gulf of Mexico) Africa (primarily West Africa) Middle East and Asia Brazil, Mexico, Central and South America Europe (primarily North Sea) Total For the Three Months Ended June 30, 2018 Time Charter Statistics: Average Rates Per Day $ 10,503 $ 9,509 $ 8,226 $ 19,127 $ 4,823 $ 7,324 Fleet Utilization 23 % 88 % 82 % 57 % 76 % 62 % Fleet Available Days 3,710 1,331 2,005 416 5,066 12,528 Operating Revenues: Time charter $ 9,052 $ 11,122 $ 13,591 $ 4,556 $ 18,505 $ 56,826 Bareboat charter — — — 1,156 — 1,156 Other marine services 1,676 350 (792 ) 845 640 2,719 10,728 11,472 12,799 6,557 19,145 60,701 Direct Costs and Expenses: Operating: Personnel 4,636 4,314 4,069 1,219 10,495 24,733 Repairs and maintenance 1,529 1,663 3,576 32 2,270 9,070 Drydocking 910 910 72 11 1,209 3,112 Insurance and loss reserves 902 248 361 169 254 1,934 Fuel, lubes and supplies 900 900 922 349 1,051 4,122 Other 29 1,402 836 488 254 3,009 8,906 9,437 9,836 2,268 15,533 45,980 Direct Vessel Profit $ 1,822 $ 2,035 $ 2,963 $ 4,289 $ 3,612 14,721 Other Costs and Expenses: Operating: Leased-in equipment $ 1,856 $ 962 $ — $ — $ 22 2,840 Administrative and general 15,532 Depreciation and amortization $ 5,915 $ 2,924 $ 4,311 $ 2,280 $ 2,976 18,406 36,778 Gains on Asset Dispositions and Impairments 1,055 Operating Loss $ (21,002 ) United States (primarily Gulf of Mexico) Africa (primarily West Africa) Middle East and Asia Brazil, Mexico, Central and South America Europe (primarily North Sea) Total For the Six Months Ended June 30, 2018 Time Charter Statistics: Average Rates Per Day $ 9,740 $ 9,482 $ 8,155 $ 18,069 $ 4,984 $ 7,174 Fleet Utilization 20 % 89 % 74 % 52 % 72 % 58 % Fleet Available Days 7,760 2,591 4,137 635 10,006 25,129 Operating Revenues: Time charter $ 15,034 $ 21,916 $ 24,965 $ 5,930 $ 36,123 $ 103,968 Bareboat charter — — — 2,299 — 2,299 Other marine services 3,331 1,637 (922 ) 955 1,154 6,155 18,365 23,553 24,043 9,184 37,277 112,422 Direct Costs and Expenses: Operating: Personnel 8,628 8,387 8,091 1,595 19,708 46,409 Repairs and maintenance 2,223 3,019 6,004 337 4,560 16,143 Drydocking 1,435 912 61 11 2,950 5,369 Insurance and loss reserves 1,336 466 597 236 489 3,124 Fuel, lubes and supplies 1,393 1,569 1,956 414 2,335 7,667 Other 54 2,438 2,044 548 532 5,616 15,069 16,791 18,753 3,141 30,574 84,328 Direct Vessel Profit $ 3,296 $ 6,762 $ 5,290 $ 6,043 $ 6,703 28,094 Other Costs and Expenses: Operating: Leased-in equipment $ 3,718 $ 1,925 $ — $ — $ 22 5,665 Administrative and general 28,339 Depreciation and amortization $ 12,450 $ 5,731 $ 10,401 $ 3,499 $ 5,837 37,918 71,922 Losses on Asset Dispositions and Impairment (1,588 ) Operating Loss $ (45,416 ) As of June 30, 2018 Property and Equipment: Historical cost $ 439,026 $ 184,037 $ 317,536 $ 165,145 $ 182,111 $ 1,287,855 Accumulated depreciation (225,116 ) (57,909 ) (86,239 ) (58,078 ) (137,135 ) (564,477 ) $ 213,910 $ 126,128 $ 231,297 $ 107,067 $ 44,976 $ 723,378 United States (primarily Gulf of Mexico) Africa (primarily West Africa) Middle East and Asia Brazil, Mexico, Central and South America Europe (primarily North Sea) Total For the Three Months Ended June 30, 2017 Time Charter Statistics: Average Rates Per Day $ 9,619 $ 10,348 $ 6,580 $ — $ 4,176 $ 5,649 Fleet Utilization 13 % 67 % 55 % — % 90 % 56 % Fleet Available Days 4,063 1,123 2,067 105 5,005 12,363 Operating Revenues: Time charter $ 4,889 $ 7,786 $ 7,415 $ — $ 18,713 $ 38,803 Bareboat charter — — — 1,156 — 1,156 Other marine services 1,198 215 109 162 680 2,364 6,087 8,001 7,524 1,318 19,393 42,323 Direct Costs and Expenses: Operating: Personnel 4,183 3,428 4,147 148 8,671 20,577 Repairs and maintenance 937 3,234 3,947 116 2,191 10,425 Drydocking 310 683 358 — 900 2,251 Insurance and loss reserves 1,205 357 353 4 207 2,126 Fuel, lubes and supplies 545 704 908 27 1,006 3,190 Other 51 871 1,061 3 237 2,223 7,231 9,277 10,774 298 13,212 40,792 Direct Vessel (Loss) Profit $ (1,144 ) $ (1,276 ) $ (3,250 ) $ 1,020 $ 6,181 1,531 Other Costs and Expenses: Operating: Leased-in equipment $ 2,205 $ 969 $ 516 $ — $ — 3,690 Administrative and general 21,705 Depreciation and amortization $ 5,749 $ 2,059 $ 3,979 $ 784 $ 2,062 14,633 40,028 Losses on Asset Dispositions and Impairments (6,318 ) Operating Loss $ (44,815 ) United States (primarily Gulf of Mexico) Africa (primarily West Africa) Middle East and Asia Brazil, Mexico, Central and South America Europe (primarily North Sea) Total For the Six Months Ended June 30, 2017 Time Charter Statistics: Average Rates Per Day $ 9,808 $ 9,913 $ 6,765 $ — $ 4,294 $ 5,683 Fleet Utilization 10 % 64 % 52 % — % 81 % 51 % Fleet Available Days 8,061 2,142 3,777 195 9,955 24,130 Operating Revenues: Time charter $ 7,884 $ 13,633 $ 13,238 $ — $ 34,778 $ 69,533 Bareboat charter — — — 2,299 — 2,299 Other marine services 2,024 407 986 237 1,141 4,795 9,908 14,040 14,224 2,536 35,919 76,627 Direct Costs and Expenses: Operating: Personnel 7,313 6,036 7,270 161 16,588 37,368 Repairs and maintenance 1,674 3,778 4,523 120 3,925 14,020 Drydocking 883 1,740 516 — 2,179 5,318 Insurance and loss reserves 2,010 539 699 11 426 3,685 Fuel, lubes and supplies 855 1,263 1,432 27 1,955 5,532 Other 123 1,517 2,526 4 487 4,657 12,858 14,873 16,966 323 25,560 70,580 Direct Vessel (Loss) Profit $ (2,950 ) $ (833 ) $ (2,742 ) $ 2,213 $ 10,359 6,047 Other Costs and Expenses: Operating: Leased-in equipment $ 4,416 $ 1,939 $ 862 $ — $ 64 7,281 Administrative and general 33,531 Depreciation and amortization $ 11,349 $ 3,649 $ 6,506 $ 1,449 $ 4,183 27,136 67,948 Losses on Asset Dispositions and Impairment (1,499 ) Operating Loss $ (63,400 ) As of June 30, 2017 Property and Equipment: Historical cost $ 417,675 $ 183,661 $ 302,892 $ 78,976 $ 171,951 $ 1,155,155 Accumulated depreciation (233,758 ) (59,300 ) (83,880 ) (41,565 ) (125,319 ) (543,822 ) $ 183,917 $ 124,361 $ 219,012 $ 37,411 $ 46,632 $ 611,333
Equity Method Investments [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 MexMar $ 1,076 $ 1,222 $ 2,508 $ 2,589 Other (1,797 ) 349 (3,021 ) (580 ) $ (721 ) $ 1,571 $ (513 ) $ 2,009

Note 1 - Basis of Presentatio33

Note 1 - Basis of Presentation and Accounting Policies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Jun. 01, 2017	Dec. 31, 2016
Common Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01	$ 0.01
Deferred Revenue	$ 10,227	$ 9,290	$ 10,104		$ 6,953
Capitalized Interest Costs, Including Allowance for Funds Used During Construction, Total	1,000
Impairment of Long-Lived Assets Held-for-use	3,000
Equity Method Investment, Other than Temporary Impairment	$ 1,200
Effective Income Tax Rate Reconciliation, Percent, Total	20.10%	27.20%
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.01
Incremental Common Shares Attributable to Conversion of Debt Securities, Total	2,183,708	4,070,500
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	196,338
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	694,691
Geographic Distribution, Domestic [Member]
Deferred Revenue	$ 6,800
Geographic Distribution, Foreign [Member]
Deferred Revenue	$ 3,200

Note 1 - Basis of Presentatio34

Note 1 - Basis of Presentation and Accounting Policies - Deferred Revenues (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Balance at beginning of period	$ 10,104	$ 6,953
Revenues deferred during the period	1,673	2,337
Revenues recognized during the period	(1,550)
Balance at end of period	$ 10,227	$ 9,290

Note 1 - Basis of Presentatio35

Note 1 - Basis of Presentation and Accounting Policies - Property and Equipment Useful Life (Details)	6 Months Ended
	Jun. 30, 2018
Wind Farm Utility Vessel [Member]
Estimated useful life (Year)	10 years
Offshore Support Vessels [Member]
Estimated useful life (Year)	20 years

Note 1 - Basis of Presentatio36

Note 1 - Basis of Presentation and Accounting Policies - Deferred Gain Activity (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Balance at beginning of period	$ 25,006	$ 33,910
Amortization of deferred gains included in operating expenses as a reduction to rental expense	(4,019)	(4,099)
Other adjustments	(250)	(364)
Balance at end of period	$ 20,737	$ 29,447

Note 1 - Basis of Presentatio37

Note 1 - Basis of Presentation and Accounting Policies - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Balance			$ 523,166
	$ (2,807)	$ 1,620	(634)	$ 2,730
Income tax expense	(8)	(533)	(35)	(887)
Balance	580,815		580,815
Other comprehensive loss	(2,815)	$ 1,087	(669)	$ 1,843
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance			(13,195)
			(847)
Income tax expense
Balance	(14,042)		(14,042)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance			702
			246
Income tax expense			(35)
Balance	913		913
AOCI Attributable to Parent [Member]
Balance			(12,493)
			(601)
Income tax expense			(35)
Balance	(13,129)		(13,129)
Other comprehensive loss			(636)
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member]
Balance			(1,357)
			(26)
Income tax expense
Balance	(1,383)		(1,383)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Noncontrolling Interest [Member]
Balance			1
			(7)
Income tax expense
Balance	$ (6)		$ (6)

Note 2 - Equipment Acquisitio38

Note 2 - Equipment Acquisitions and Dispositions (Details Textual) $ in Millions	6 Months Ended
	Jun. 30, 2018USD ($)
Payments to Acquire Property, Plant, and Equipment, Including Fair Value Hedges	$ 18.8
Proceeds from Sale of Property, Plant, and Equipment, Including Deposits	2.6
Proceeds from Sale of Property, Plant, and Equipment, Excluding Deposits for Future Vessel Sales	2.5
Proceeds from Deposits	0.1
Gain (Loss) on Disposition of Property Plant Equipment, Total	$ 1.4
Wind Farm Utility Vessel [Member]
Number of Equipment Acquired	1
Liftboats [Member]
Number of Equipment Acquired	6
Supply Vessels [Member]
Number of Equipment Acquired	2
Number of Equipment Sold	1
Fast Support Vessels [Member]
Number of Equipment Sold	1
Supply Vessel Previously Retired [Member]
Number of Equipment Sold	2
Standby Safety Vessels [Member]
Number of Equipment Sold	1

Note 3 - Investments, at Equi39

Note 3 - Investments, at Equity, and Advances to 50% or Less Owned Companies (Details Textual) $ in Thousands	Jan. 17, 2018USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)
Payments to Acquire Property, Plant, and Equipment, Total		$ 15,548	$ 28,803
Unrecorded Unconditional Purchase Obligation, Total		43,300
Equity Method Investment, Other than Temporary Impairment		1,200
Guarantor Obligations, Maximum Exposure, Undiscounted		51,600
Grant DIS [Member]
Capital Call		400
SeaCosco Offshore LLC [Member]
Number of Equipment Operated	8
Payments to Acquire Property, Plant, and Equipment, Total	$ 161,100
Unrecorded Unconditional Purchase Obligation, Total	$ 27,500	27,500
Equity Method Investment, Ownership Percentage	50.00%
Partners' Capital Account, Contributions		25,600
SEACOR Holdings [Member]
Equity Method Investment, Other than Temporary Impairment		1,200
Equity Method Investments		$ 0
Other Offshore Marine Services Joint Ventures [Member]
Equity Method Investment, Ownership Percentage		50.00%
Guarantor Obligations, Maximum Exposure, Undiscounted		$ 500
Allocable Share of Uncalled Capital		$ 1,200

Note 4 - Long-term Debt (Detail

Note 4 - Long-term Debt (Details Textual) $ / shares in Units, $ in Thousands, € in Millions	May 02, 2018USD ($)$ / sharesshares	Feb. 08, 2018USD ($)	Jun. 30, 2018USD ($)$ / shares	Jun. 30, 2018EUR (€)	Jun. 30, 2017USD ($)	May 31, 2018$ / shares	May 24, 2018$ / shares	Dec. 31, 2017$ / shares	Dec. 01, 2015USD ($)
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.01
Repayments of Long-term Debt, Total			$ 35,202		$ 3,973
Debt Instrument, Increase (Decrease), Net, Total			1,000
Other Labor and Performance Guarantee			1,700
Long-term Debt Obligation [Member]
Letters of Credit Outstanding, Amount			$ 7,900
Falcon Global Holdings [Member]
Noncontrolling Interest, Ownership Percentage by Parent			72.00%
Falcon Global USA LLC [Member]
Payments for Debtor-in-possession Obligations		$ 15,000
Convertible Senior Notes Converted to Warrants [Member] | Carlyle Group [Member]
Debt Instrument, Convertible, Conversion Ratio	37.73
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 0.01
Debt Conversion, Original Debt, Amount	$ 50,000
Debt Conversion, Converted Instrument, Shares Issued | shares	1,886,792
Debt Instrument, Convertible, Conversion Price | $ / shares	$ 26.50
Conversion Revolving Credit Facility from Windcat Workboats [Member]
Debt Conversion, Original Debt, Amount | €				€ 6
Carlyle Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.01			$ 0.01	$ 0.01
Warrants and Rights Outstanding, Term	25 years
Convertible Senior Notes 3.75% [Member]
Convertible Debt, Total	$ 125,000								$ 175,000
Debt Instrument, Interest Rate, Stated Percentage	4.25%								3.75%
Debt Instrument, Convertible, Conversion Ratio			23.26	23.26
FGUSA Credit Facility [Member]
Debt Agreement, Maximum Borrowing Capacity		131,100
Debt Instrument, Unamortized Discount, Total		10,000
FGUSA Credit Facility [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		15,000
Debt Instrument, Interest Rate, Effective Percentage			6.63%
Proceeds from Lines of Credit, Total			$ 10,000
FGUSA Credit Facility [Member] | Term Loan [Member]
Long-term Debt, Total		$ 116,100
Euro Debt [Member]
Repayments of Long-term Debt, Total			7,500
Pound Sterling Debt [Member]
Proceeds from Issuance of Long-term Debt, Total			$ 8,500

Note 5 - Income Taxes (Details

Note 5 - Income Taxes (Details Textual) $ in Millions	Dec. 31, 2017USD ($)
Operating Loss Carryforwards, Total	$ 3.9

Note 5 - Income Taxes - Income

Note 5 - Income Taxes - Income Tax Rate Reconciliation (Details)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statutory rate	21.00%
Noncontrolling interests	(1.20%)
Foreign earnings not subject to U.S. income tax	(3.00%)
Foreign taxes not creditable against U.S. income tax	(2.40%)
Unrecognized tax benefit	5.40%
Other	0.30%
	20.10%	27.20%

Note 6 - Derivative Instrumen43

Note 6 - Derivative Instruments and Hedging Strategies (Details Textual) - Interest Rate Swap [Member] € in Millions, $ in Millions	Jun. 30, 2018USD ($)	Jun. 30, 2018EUR (€)
Falcon Global [Member]
Derivative, Fixed Interest Rate	2.06%	2.06%
Derivative, Notional Amount	$ 53.1
OSV Partners [Member]
Derivative, Number of Instruments Held, Total	2	2
OSV Partners [Member] | Minimum [Member]
Derivative, Fixed Interest Rate	1.89%	1.89%
OSV Partners [Member] | Maximum [Member]
Derivative, Fixed Interest Rate	2.27%	2.27%
Derivative, Notional Amount	$ 30.4
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative, Number of Instruments Held, Total	2	2
Derivative, Fixed Interest Rate	0.03%	0.03%
Derivative, Notional Amount	$ 17.5	€ 15
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | MexMar [Member]
Derivative, Number of Instruments Held, Total	5	5
Derivative, Notional Amount	$ 104
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | MexMar [Member] | Minimum [Member]
Derivative, Fixed Interest Rate	1.71%	1.71%
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | MexMar [Member] | Maximum [Member]
Derivative, Fixed Interest Rate	2.10%	2.10%
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Sea-Cat Crewzer II [Member]
Derivative, Fixed Interest Rate	1.52%	1.52%
Derivative, Notional Amount	$ 19.7
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Sea-Cat Crewzer [Member]
Derivative, Fixed Interest Rate	1.52%	1.52%
Derivative, Notional Amount	$ 17.4

Note 6 - Derivative Instrumen44

Note 6 - Derivative Instruments and Hedging Strategies - Derivative Instruments (Details) $ in Thousands	Jun. 30, 2018USD ($)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative assets	$ 436	[1]
Derivative liabilities	44
Not Designated as Hedging Instrument [Member]
Derivative assets	1,540	[1]
Derivative liabilities	21,930
Conversion option liability on Convertible Senior Notes	21,886
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative assets	436	[1]
Derivative liabilities	44	[2]
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative assets	1,104	[1]
Derivative liabilities		[2]
[1]	Included in other receivables in the accompanying condensed consolidated balance sheets.
[2]	Included in other current liabilities in the accompanying condensed consolidated balance sheets.

Note 6 - Derivative Instrumen45

Note 6 - Derivative Instruments and Hedging Strategies - Gains (Losses) on Derivative Instruments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Gains (losses) on derivative instruments	$ (14,184)	$ (302)
Embedded Derivative Financial Instruments [Member]
Gains (losses) on derivative instruments	(15,054)	145
Foreign Exchange Option [Member]
Gains (losses) on derivative instruments		(56)
Interest Rate Swap [Member]
Gains (losses) on derivative instruments	$ 870	$ (391)

Note 7 - Fair Value Measureme46

Note 7 - Fair Value Measurements (Details Textual) $ in Millions	6 Months Ended
	Jun. 30, 2018USD ($)
Impairment of Long-Lived Assets Held-for-use	$ 3
Minimum [Member] | Economic Obsolesence Factor [Member]
Property and Equipment, Measurement Input	0.45
Maximum [Member] | Economic Obsolesence Factor [Member]
Property and Equipment, Measurement Input	0.5
Liftboats [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	25 years
Liftboats [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	40 years
Debt Assumed from FGUSA [Member]
Long-term Debt, Total	$ 121.6

Note 7 - Fair Value Measureme47

Note 7 - Fair Value Measurements - Assets and Liabilities on Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] $ in Thousands	Jun. 30, 2018USD ($)
Fair Value, Inputs, Level 1 [Member]
Derivative assets
Construction reserve funds	38,152
Derivative liabilities
Fair Value, Inputs, Level 2 [Member]
Derivative assets	1,541
Construction reserve funds
Derivative liabilities	44
Fair Value, Inputs, Level 3 [Member]
Derivative assets
Construction reserve funds
Derivative liabilities	$ 21,886

Note 7 - Fair Value Measureme48

Note 7 - Fair Value Measurements - Estimated Fair Value (Details) $ in Thousands	Jun. 30, 2018USD ($)
Reported Value Measurement [Member]
Cash, cash equivalents and restricted cash	$ 88,190
Investments, at cost, in 50% or less owned companies (included in other assets)	132
Long-term debt, including current portion	371,770
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash, cash equivalents and restricted cash	88,190
Long-term debt, including current portion
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash, cash equivalents and restricted cash
Investments, at cost, in 50% or less owned companies (included in other assets)
Long-term debt, including current portion	357,742
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash, cash equivalents and restricted cash
Investments, at cost, in 50% or less owned companies (included in other assets)
Long-term debt, including current portion

Note 7 - Fair Value Measureme49

Note 7 - Fair Value Measurements - Other Assets and Liabilities at Fair Value (Details) $ in Thousands	Jun. 30, 2018USD ($)
Fair Value, Inputs, Level 1 [Member] | Anchor Handling Towing Supply [Member]
Property and equipment
Fair Value, Inputs, Level 1 [Member] | Liftboats [Member]
Property and equipment
Fair Value, Inputs, Level 2 [Member] | Anchor Handling Towing Supply [Member]
Property and equipment	2,000
Fair Value, Inputs, Level 2 [Member] | Liftboats [Member]
Property and equipment
Fair Value, Inputs, Level 3 [Member] | Anchor Handling Towing Supply [Member]
Property and equipment
Fair Value, Inputs, Level 3 [Member] | Liftboats [Member]
Property and equipment	$ 134,775

Note 8 - Warrants (Details Text

Note 8 - Warrants (Details Textual) - USD ($)	Jun. 08, 2018	May 31, 2018	May 02, 2018	Apr. 26, 2018	Jun. 30, 2018	May 24, 2018	Dec. 31, 2017
Stock Issued During Period, Value, New Issues					$ 42,996,000
Class of Warrant or Right, Outstanding					2,271,406
Class of Warrant or Right, Exercise Price of Warrants or Rights					$ 0.01
Class of Warrant or Right, Exercised During Period					289,550
Class of Warrant or Right, Exercised During Period, Exercise Price					$ 0.01
Carlyle Group [Member] | Convertible Senior Notes Converted to Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 0.01
Debt Conversion, Original Debt, Amount			$ 50,000,000
Warrants Issued in Private Placement [Member]
Class of Warrant or Right, Outstanding				2,168,586
Class of Warrant or Right, Number of Securities Called by Warrants or Rights				674,164
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 0.01
Warrants and Rights Outstanding, Term				25 years
Carlyle Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		1,636,099
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 0.01			$ 0.01	$ 0.01
Warrants and Rights Outstanding, Term			25 years
Class of Warrant or Right, Exercised During Period		250,585
Shares Paid for Tax Withholding for Exercise of Warrants		108
PIPE Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	635,307
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.01
Class of Warrant or Right, Exercised During Period	38,857
Class of Warrant or Right, Exercised During Period, Exercise Price	$ 0.01
Private Placement [Member]
Stock Issued During Period, Value, New Issues				$ 56,855,000

Note 8 - Warrants - Warrant Act

Note 8 - Warrants - Warrant Activity (Details)	6 Months Ended
	Jun. 30, 2018$ / sharesshares
Balance (in dollars per share) | $ / shares
Balance, weighted average exercise price (in shares) | shares
Warrants issued (in dollars per share) | $ / shares	$ 0.01
Warrants issued, weighted average exercise price (in shares) | shares	2,560,956
Warrants exercised (in dollars per share) | $ / shares	$ 0.01
Warrants exercised, weighted average exercise price (in shares) | shares	(289,550)
Balance (in dollars per share) | $ / shares	$ 0.01
Balance, weighted average exercise price (in shares) | shares	2,271,406

Note 9 - Stockholders' Equity (

Note 9 - Stockholders' Equity (Details Textual) - USD ($)	May 02, 2018	Apr. 26, 2018	Mar. 26, 2018	Feb. 08, 2018	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Cumulative Effect of New Accounting Principle in Period of Adoption							$ (12,069,000)
Stock Issued During Period, Shares, New Issues			103,213
Proceeds from Issuance of Private Placement			$ 1,800,000
Stock Issued During Period, Value, New Issues					$ 42,996,000
Carlyle Group [Member] | Convertible Senior Notes Converted to Warrants [Member]
Debt Conversion, Original Debt, Amount	$ 50,000,000
Private Placement [Member]
Stock Issued During Period, Value, New Issues		$ 56,855,000
FGUSA Credit Facility [Member]
Debt Agreement, Maximum Borrowing Capacity				$ 131,100,000
Debt Instrument, Unamortized Discount, Total				10,000,000
Falcon Global USA LLC [Member]
Payments for Debtor-in-possession Obligations				$ 15,000,000
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption						$ (12,100,000)	$ (12,069,000)
Stock Issued During Period, Value, New Issues

Note 10 - Noncontrolling Inte53

Note 10 - Noncontrolling Interests in Subsidiaries (Details Textual) - USD ($) $ in Thousands	Feb. 08, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total		$ (26,629)	$ (36,489)	$ (58,317)	$ (44,088)
Net Income (Loss) Attributable to Noncontrolling Interest, Total		$ (1,605)	$ (2,497)	$ (4,460)	$ (2,701)
Windcat Workboats [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		12.50%		12.50%
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total				$ (3,300)
Net Income (Loss) Attributable to Noncontrolling Interest, Total				(400)
Net Assets, Ending Balance		$ 17,600		17,600
Falcon Global Holdings [Member]
Joint Venture, Total Capital	$ 112,500
Joint Venture, Contribution from Previous Joint Venture	43,300
Joint Venture, Contribution from Noncontrolling Interest	$ 18,800
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	28.00%
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total				14,400
Net Income (Loss) Attributable to Noncontrolling Interest, Total				$ 4,000

Note 10 - Noncontrolling Inte54

Note 10 - Noncontrolling Interests in Subsidiaries - Noncontrolling Interest (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Noncontrolling interest	$ 29,455	$ 14,975
Falcon Global [Member]
Noncontrolling interest percent	28.00%
Noncontrolling interest	$ 26,967	12,087
Windcat Workboats [Member]
Noncontrolling interest percent	12.50%
Noncontrolling interest	$ 2,201	2,608
Other Noncontrolling Interests [Member]
Noncontrolling interest percent	1.80%
Noncontrolling interest	$ 287	$ 280

Note 11 - Commitments and Con55

Note 11 - Commitments and Contingencies (Details Textual) € in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2018EUR (€)
Unrecorded Unconditional Purchase Obligation, Total	$ 43.3
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	12.7
Unrecorded Unconditional Purchase Obligation, Due within Two Years	21.6
Unrecorded Unconditional Purchase Obligation, Due within Three Years	9
Unrecorded Unconditional Purchase Obligation, Due within Four Years	20.8
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 51.6
SEACOR Holdings [Member]
Related Party Transaction, Rate	0.50%
Line of Credit [Member] | Performance Guarantee [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted | €		€ 0.9
Fast Support Vessels [Member]
Unrecorded Unconditional Purchase Obligation, Maximum Quantity	2	2
Supply Vessels [Member]
Unrecorded Unconditional Purchase Obligation, Maximum Quantity	3	3
Wind Farm Utility Vessel [Member]
Unrecorded Unconditional Purchase Obligation, Maximum Quantity	3	3
Standby Safety Vessels [Member]
Unrecorded Unconditional Purchase Obligation, Maximum Quantity	1	1

Note 12 - Multi-employer Pens56

Note 12 - Multi-employer Pension Plans (Details Textual) - Merchant Navy Ratings Pension Fund [Member] $ in Thousands, € in Millions	12 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019EUR (€)	Mar. 31, 2017USD ($)	Mar. 31, 2017EUR (€)
Multiemployer Plans, Cumulative Funding Deficit			$ 291,900	€ 221
Scenario, Forecast [Member]
Multiemployer Plan, Contributions by Employer	$ 1,190	€ 0.9

Note 13 - Share Based Compens57

Note 13 - Share Based Compensation - Equity Incentive Plan Transactions (Details)	6 Months Ended
	Jun. 30, 2018shares
Outstanding as of December 31, 2017 (in shares)	613,700
Granted (in shares)	145,991
Exercised (in shares)	65,000
Outstanding as of June 30, 2018 (in shares)	694,691
Shares Available for future grants as of June 30, 2018 (in shares)	1,270,424
Director Stock Awards [Member]
Granted (in shares)	19,285
Restricted Stock [Member]
Granted (in shares)	120,600

Note 14 - Stock Repurchases (De

Note 14 - Stock Repurchases (Details Textual) - USD ($)	May 24, 2018	May 14, 2018	Jun. 30, 2018	May 31, 2018	Dec. 31, 2017
Treasury Stock, Shares, Acquired	108	2,242
Treasury Stock, Value, Acquired, Cost Method	$ 2,562	$ 51,454	$ 51,000
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 0.01
Carlyle Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.01		$ 0.01	$ 0.01

Note 15 - Segment Information59

Note 15 - Segment Information (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total	$ 115,424	$ 92,169
MexMar [Member]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total	63,700
Other Offshore Marine Services Joint Ventures [Member]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total	$ 51,700

Note 15 - Segment Information -

Note 15 - Segment Information - Summary of Reportable Segments (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Average Rates Per Day	$ 7,324	$ 5,649	$ 7,174	$ 5,683
Fleet Utilization	62.00%	56.00%	58.00%	51.00%
Fleet Available Days	12,528	12,363	25,129	24,130
Operating Revenues	$ 60,701	$ 42,323	$ 112,422	$ 76,627
Direct Costs and Expenses	45,980	40,792	84,328	70,580
Direct Vessel Profit	14,721	1,531	28,094	6,047
Operating expenses	36,778	40,028	71,922	67,948
Administrative and general	15,532	21,705	28,339	33,531
Depreciation and amortization	18,406	14,633	37,918	27,136
Gains (Losses) on Asset Dispositions and Impairments, Net	1,055	(6,318)	(1,588)	(1,499)
Operating Loss	(21,002)	(44,815)	(45,416)	(63,400)
Historical cost	1,287,855	1,155,155	1,287,855	1,155,155	$ 1,179,836
Accumulated depreciation	(564,477)	(543,822)	(564,477)	(543,822)	(560,160)
	723,378	611,333	723,378	611,333	$ 619,676
Leased-in Equipment [Member]
Operating expenses	2,840	3,690	5,665	7,281
Time Charter [Member]
Operating Revenues	56,826	38,803	103,968	69,533
Bareboat Charter [Member]
Operating Revenues	1,156	1,156	2,299	2,299
Other Marine Services [Member]
Operating Revenues	2,719	2,364	6,155	4,795
Personnel [Member]
Direct Costs and Expenses	24,733	20,577	46,409	37,368
Repairs and Maintenance [Member]
Direct Costs and Expenses	9,070	10,425	16,143	14,020
Drydocking [Member]
Direct Costs and Expenses	3,112	2,251	5,369	5,318
Insurance and Loss Reserves [Member]
Direct Costs and Expenses	1,934	2,126	3,124	3,685
Fuel, Lubes and Supplies [Member]
Direct Costs and Expenses	4,122	3,190	7,667	5,532
Other Direct Costs and Expenses [Member]
Direct Costs and Expenses	3,009	2,223	5,616	4,657
UNITED STATES
Average Rates Per Day	$ 10,503	$ 9,619	$ 9,740	$ 9,808
Fleet Utilization	23.00%	13.00%	20.00%	10.00%
Fleet Available Days	3,710	4,063	7,760	8,061
Operating Revenues	$ 10,728	$ 6,087	$ 18,365	$ 9,908
Direct Costs and Expenses	8,906	7,231	15,069	12,858
Direct Vessel Profit	1,822	(1,144)	3,296	(2,950)
Administrative and general
Depreciation and amortization	5,915	5,749	12,450	11,349
Historical cost	439,026	417,675	439,026	417,675
Accumulated depreciation	(225,116)	(233,758)	(225,116)	(233,758)
	213,910	183,917	213,910	183,917
UNITED STATES | Leased-in Equipment [Member]
Operating expenses	1,856	2,205	3,718	4,416
UNITED STATES | Time Charter [Member]
Operating Revenues	9,052	4,889	15,034	7,884
UNITED STATES | Bareboat Charter [Member]
Operating Revenues
UNITED STATES | Other Marine Services [Member]
Operating Revenues	1,676	1,198	3,331	2,024
UNITED STATES | Personnel [Member]
Direct Costs and Expenses	4,636	4,183	8,628	7,313
UNITED STATES | Repairs and Maintenance [Member]
Direct Costs and Expenses	1,529	937	2,223	1,674
UNITED STATES | Drydocking [Member]
Direct Costs and Expenses	910	310	1,435	883
UNITED STATES | Insurance and Loss Reserves [Member]
Direct Costs and Expenses	902	1,205	1,336	2,010
UNITED STATES | Fuel, Lubes and Supplies [Member]
Direct Costs and Expenses	900	545	1,393	855
UNITED STATES | Other Direct Costs and Expenses [Member]
Direct Costs and Expenses	29	51	54	123
Africa [Member]
Average Rates Per Day	$ 9,509	$ 10,348	$ 9,482	$ 9,913
Fleet Utilization	88.00%	67.00%	89.00%	64.00%
Fleet Available Days	1,331	1,123	2,591	2,142
Operating Revenues	$ 11,472	$ 8,001	$ 23,553	$ 14,040
Direct Costs and Expenses	9,437	9,277	16,791	14,873
Direct Vessel Profit	2,035	(1,276)	6,762	(833)
Administrative and general
Depreciation and amortization	2,924	2,059	5,731	3,649
Historical cost	184,037	183,661	184,037	183,661
Accumulated depreciation	(57,909)	(59,300)	(57,909)	(59,300)
	126,128	124,361	126,128	124,361
Africa [Member] | Leased-in Equipment [Member]
Operating expenses	962	969	1,925	1,939
Africa [Member] | Time Charter [Member]
Operating Revenues	11,122	7,786	21,916	13,633
Africa [Member] | Bareboat Charter [Member]
Operating Revenues
Africa [Member] | Other Marine Services [Member]
Operating Revenues	350	215	1,637	407
Africa [Member] | Personnel [Member]
Direct Costs and Expenses	4,314	3,428	8,387	6,036
Africa [Member] | Repairs and Maintenance [Member]
Direct Costs and Expenses	1,663	3,234	3,019	3,778
Africa [Member] | Drydocking [Member]
Direct Costs and Expenses	910	683	912	1,740
Africa [Member] | Insurance and Loss Reserves [Member]
Direct Costs and Expenses	248	357	466	539
Africa [Member] | Fuel, Lubes and Supplies [Member]
Direct Costs and Expenses	900	704	1,569	1,263
Africa [Member] | Other Direct Costs and Expenses [Member]
Direct Costs and Expenses	1,402	871	2,438	1,517
Middle East and Asia [Member]
Average Rates Per Day	$ 8,226	$ 6,580	$ 8,155	$ 6,765
Fleet Utilization	82.00%	55.00%	74.00%	52.00%
Fleet Available Days	2,005	2,067	4,137	3,777
Operating Revenues	$ 12,799	$ 7,524	$ 24,043	$ 14,224
Direct Costs and Expenses	9,836	10,774	18,753	16,966
Direct Vessel Profit	2,963	(3,250)	5,290	(2,742)
Administrative and general
Depreciation and amortization	4,311	3,979	10,401	6,506
Historical cost	317,536	302,892	317,536	302,892
Accumulated depreciation	(86,239)	(83,880)	(86,239)	(83,880)
	231,297	219,012	231,297	219,012
Middle East and Asia [Member] | Leased-in Equipment [Member]
Operating expenses		516		862
Middle East and Asia [Member] | Time Charter [Member]
Operating Revenues	13,591	7,415	24,965	13,238
Middle East and Asia [Member] | Bareboat Charter [Member]
Operating Revenues
Middle East and Asia [Member] | Other Marine Services [Member]
Operating Revenues	(792)	109	(922)	986
Middle East and Asia [Member] | Personnel [Member]
Direct Costs and Expenses	4,069	4,147	8,091	7,270
Middle East and Asia [Member] | Repairs and Maintenance [Member]
Direct Costs and Expenses	3,576	3,947	6,004	4,523
Middle East and Asia [Member] | Drydocking [Member]
Direct Costs and Expenses	72	358	61	516
Middle East and Asia [Member] | Insurance and Loss Reserves [Member]
Direct Costs and Expenses	361	353	597	699
Middle East and Asia [Member] | Fuel, Lubes and Supplies [Member]
Direct Costs and Expenses	922	908	1,956	1,432
Middle East and Asia [Member] | Other Direct Costs and Expenses [Member]
Direct Costs and Expenses	836	1,061	2,044	2,526
Brazil, Mexico, Central and South America [Member]
Average Rates Per Day	$ 19,127		$ 18,069
Fleet Utilization	57.00%		52.00%
Fleet Available Days	416	105	635	195
Operating Revenues	$ 6,557	$ 1,318	$ 9,184	$ 2,536
Direct Costs and Expenses	2,268	298	3,141	323
Direct Vessel Profit	4,289	1,020	6,043	2,213
Administrative and general
Depreciation and amortization	2,280	784	3,499	1,449
Historical cost	165,145	78,976	165,145	78,976
Accumulated depreciation	(58,078)	(41,565)	(58,078)	(41,565)
	107,067	37,411	107,067	37,411
Brazil, Mexico, Central and South America [Member] | Leased-in Equipment [Member]
Operating expenses
Brazil, Mexico, Central and South America [Member] | Time Charter [Member]
Operating Revenues	4,556		5,930
Brazil, Mexico, Central and South America [Member] | Bareboat Charter [Member]
Operating Revenues	1,156	1,156	2,299	2,299
Brazil, Mexico, Central and South America [Member] | Other Marine Services [Member]
Operating Revenues	845	162	955	237
Brazil, Mexico, Central and South America [Member] | Personnel [Member]
Direct Costs and Expenses	1,219	148	1,595	161
Brazil, Mexico, Central and South America [Member] | Repairs and Maintenance [Member]
Direct Costs and Expenses	32	116	337	120
Brazil, Mexico, Central and South America [Member] | Drydocking [Member]
Direct Costs and Expenses	11		11
Brazil, Mexico, Central and South America [Member] | Insurance and Loss Reserves [Member]
Direct Costs and Expenses	169	4	236	11
Brazil, Mexico, Central and South America [Member] | Fuel, Lubes and Supplies [Member]
Direct Costs and Expenses	349	27	414	27
Brazil, Mexico, Central and South America [Member] | Other Direct Costs and Expenses [Member]
Direct Costs and Expenses	488	3	548	4
Europe [Member]
Average Rates Per Day	$ 4,823	$ 4,176	$ 4,984	$ 4,294
Fleet Utilization	76.00%	90.00%	72.00%	81.00%
Fleet Available Days	5,066	5,005	10,006	9,955
Operating Revenues	$ 19,145	$ 19,393	$ 37,277	$ 35,919
Direct Costs and Expenses	15,533	13,212	30,574	25,560
Direct Vessel Profit	3,612	6,181	6,703	10,359
Administrative and general
Depreciation and amortization	2,976	2,062	5,837	4,183
Historical cost	182,111	171,951	182,111	171,951
Accumulated depreciation	(137,135)	(125,319)	(137,135)	(125,319)
	44,976	46,632	44,976	46,632
Europe [Member] | Leased-in Equipment [Member]
Operating expenses	22		22	64
Europe [Member] | Time Charter [Member]
Operating Revenues	18,505	18,713	36,123	34,778
Europe [Member] | Bareboat Charter [Member]
Operating Revenues
Europe [Member] | Other Marine Services [Member]
Operating Revenues	640	680	1,154	1,141
Europe [Member] | Personnel [Member]
Direct Costs and Expenses	10,495	8,671	19,708	16,588
Europe [Member] | Repairs and Maintenance [Member]
Direct Costs and Expenses	2,270	2,191	4,560	3,925
Europe [Member] | Drydocking [Member]
Direct Costs and Expenses	1,209	900	2,950	2,179
Europe [Member] | Insurance and Loss Reserves [Member]
Direct Costs and Expenses	254	207	489	426
Europe [Member] | Fuel, Lubes and Supplies [Member]
Direct Costs and Expenses	1,051	1,006	2,335	1,955
Europe [Member] | Other Direct Costs and Expenses [Member]
Direct Costs and Expenses	$ 254	$ 237	$ 532	$ 487

Note 15 - Segment Information61

Note 15 - Segment Information - Income (Loss) in Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Equity in earnings (losses) of 50% or less owned companies	$ (721)	$ 1,571	$ (513)	$ 2,009
MexMar [Member]
Equity in earnings (losses) of 50% or less owned companies	1,076	1,222	2,508	2,589
Other Offshore Marine Services Joint Ventures [Member]
Equity in earnings (losses) of 50% or less owned companies	$ (1,797)	$ 349	$ (3,021)	$ (580)

Note 16 - Subsequent Event (Det

Note 16 - Subsequent Event (Details Textual) - Marshall Islands Limited Liability Companies [Member] - Subsequent Event [Member] $ in Millions	Jul. 05, 2018USD ($)
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Number of Businesses Acquired	2
Business Combination, Consideration Transferred, Liabilities Incurred	$ 11