StealthGas (GASS) 20-F 26 Apr 24 2023 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Dec. 31, 2023 shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Trading Symbol	GASS
Entity Registrant Name	STEALTHGAS INC.
Entity Central Index Key	0001328919
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	36,142,326
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Document Accounting Standard	U.S. GAAP
Entity Address, Address Line One	331 Kifissias Avenue
Entity Address, Address Line Two	Erithrea 14561
Entity Address, City or Town	Athens
Entity Address, Country	GR
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-36797
Document Shell Company Report	false
Document Registration Statement	false
Title of 12(b) Security	Common Stock, par value $0.01 per share
Security Exchange Name	NASDAQ
ICFR Auditor Attestation Flag	true
Entity Address, Postal Zip Code	14561
Entity Incorporation, State or Country Code	1T
Auditor Firm ID	1163
Auditor Name	Deloitte Certified Public Accountants S.A
Auditor Location	Athens, Greece
Document Financial Statement Error Correction [Flag]	false
Business Contact [Member]
Document Information [Line Items]
Entity Address, Address Line One	331 Kifissias Avenue
Entity Address, Address Line Two	Erithrea 14561
Entity Address, City or Town	Athens
Entity Address, Country	GR
Contact Personnel Name	Harry N. Vafias
Country Region	30
City Area Code	210
Local Phone Number	625 0001
Entity Address, Postal Zip Code	14561

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 77,202,843	$ 55,770,823
Short-term investments		26,500,000
Trade and other receivables	4,506,741	4,630,536
Other current assets	130,589	270,514
Claims receivable	55,475	182,141
Inventories	1,979,683	3,064,011
Advances and prepayments	1,409,418	681,413
Restricted cash	659,137	2,519,601
Assets held for sale	34,879,925	11,107,182
Total current assets	120,823,811	104,726,221
Non current assets
Advances for vessels' acquisitions	23,414,570	23,400,000
Operating lease right-of-use assets	99,379	0
Vessels, net	504,295,083	628,478,453
Other receivables	48,040	162,872
Restricted cash	5,893,721	10,864,520
Investments in joint ventures	39,671,603	46,632,720
Deferred finance charges	1,105,790	165,666
Fair value of derivatives	1,858,677	7,102,855
Total non current assets	576,386,863	716,807,086
Total assets	697,210,674	821,533,307
Current liabilities
Payable to related parties	955,567	2,476,663
Trade accounts payable	9,953,137	11,838,243
Accrued and other liabilities	5,681,144	6,923,992
Operating lease liabilities	71,173	0
Deferred income	5,386,126	5,234,978
Current portion of long-term debt	16,624,473	30,083,806
Total current liabilities	$ 38,671,620	$ 56,557,682
Other Liability, Current, Related Party, Type [Extensible Enumeration]	Related Party [Member]	Related Party [Member]
Non current liabilities
Operating lease liabilities	$ 28,206	$ 0
Deferred income	1,928,712	21,451
Long-term debt	106,918,176	247,028,823
Total non current liabilities	108,875,094	247,050,274
Total liabilities	147,546,713	303,607,956
Commitments and contingencies
Stockholders' equity
Capital stock, 5,000,000 preferred shares authorized and zero outstanding with a par value of $0.01 per share, 100,000,000 common shares authorized, 43,527,428 shares issued and 38,202,181 shares outstanding at December 31, 2022 and 45,343,428 shares issued and 36,142,326 shares outstanding at December 31, 2023 with a par value of $0.01 per share	453,434	435,274
Treasury stock, 5,325,247 at December 31, 2022 and 9,201,102 at December 31, 2023 with a par value of $0.01 per share	(44,453,836)	(25,373,380)
Additional paid-in capital	446,938,868	443,620,122
Retained earnings	145,993,681	94,056,852
Accumulated other comprehensive income	731,814	5,186,483
Total stockholders' equity	549,663,961	517,925,351
Total liabilities and stockholders' equity	$ 697,210,674	$ 821,533,307

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding	0	0
Preferred stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	45,343,428	43,527,428
Common stock, shares outstanding	36,142,326	38,202,181
Common stock,par value	$ 0.01	$ 0.01
Treasury stock, shares	9,201,102	5,325,247
Treasury stock, par value	$ 0.01	$ 0.01

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues
Revenues	$ 143,527,769	$ 152,760,888	$ 150,204,527
Total revenues	143,527,769	152,760,888	150,204,527
Expenses
Voyage expenses	11,429,716	20,306,407	20,342,186
Voyage expenses – related party	1,779,488	1,871,071	1,867,100
Vessels' operating expenses	52,206,248	53,909,328	60,443,813
Vessels' operating expenses – related party	911,250	1,035,450	1,065,750
Dry-docking costs	2,641,706	2,954,575	5,285,490
Management fees – related party	4,531,920	5,242,990	5,831,900
General and administrative expenses (including $1,126,112, $1,012,829, and $1,074,549 to related party)	5,331,029	3,404,141	4,337,013
Depreciation	23,707,797	27,814,901	37,125,903
Impairment loss	2,816,873	3,167,034	44,616,214
Net loss/(gain) on sale of vessels	(7,645,781)	408,637	304,210
Total expenses	97,710,246	120,114,534	181,219,579
(Loss)/Income from operations	45,817,523	32,646,354	(31,015,052)
Other (expenses)/income
Interest and finance costs	(9,956,712)	(12,076,300)	(12,678,101)
Gain on derivatives	237,618	1,698,462	240,153
Interest income	3,712,239	1,098,789	26,379
Foreign exchange (loss)/gain	(190,722)	23,373	(23,288)
Other expenses, net	(6,197,577)	(9,255,676)	(12,434,857)
(Loss)/Income before equity in earnings of investees	39,619,946	23,390,678	(43,449,909)
Equity earnings in joint ventures	12,316,883	10,862,687	8,326,701
Net (Loss)/Income	$ 51,936,829	$ 34,253,365	$ (35,123,208)
Earnings/(Loss) per share
Basic	$ 1.38	$ 0.9	$ (0.93)
Diluted	$ 1.37	$ 0.9	$ (0.93)
Weighted average number of shares
Basic	37,166,449	37,961,560	37,858,437
Diluted	37,236,951	37,961,673	37,858,437

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party [Member]
General and administrative expenses, related party	$ 1,074,549	$ 1,012,829	$ 1,126,112

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss)/Income - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net (loss)/income	$ 51,936,829	$ 34,253,365	$ (35,123,208)
Other comprehensive income/(loss)
Effect of cash flow hedges	(4,454,669)	8,290,428	1,848,878
Total other comprehensive income/(loss)	(4,454,669)	8,290,428	1,848,878
Total comprehensive (loss)/income	$ 47,482,160	$ 42,543,793	$ (33,274,330)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($)	Total	Capital Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss)/Income [Member]
Beginning balance at Dec. 31, 2020	$ 564,596,415	$ 431,836	$ (25,373,380)	$ 499,564,087	$ 94,926,695	$ (4,952,823)
Balance (in shares) at Dec. 31, 2020		43,183,684	(5,325,247)
Issuance of restricted shares and stock based compensation	610,788	$ 3,438		607,350
Issuance of restricted shares and stock based compensation (in shares)		343,744
Distribution of net assets of Imperial Petroleum Inc. to stockholders (Note 1)	(57,162,103)			(57,162,103)
Comprehensive income/(loss) for the year	(33,274,330)				(35,123,208)	1,848,878
Ending balance at Dec. 31, 2021	474,770,770	$ 435,274	$ (25,373,380)	443,009,334	59,803,487	(3,103,945)
Ending Balance, (in shares) at Dec. 31, 2021		43,527,428	(5,325,247)
Stock based compensation	610,788			610,788
Comprehensive income/(loss) for the year	42,543,793				34,253,365	8,290,428
Ending balance at Dec. 31, 2022	517,925,351	$ 435,274	$ (25,373,380)	443,620,122	94,056,852	5,186,483
Ending Balance, (in shares) at Dec. 31, 2022		43,527,428	(5,325,247)
Issuance of restricted shares and stock based compensation	2,589,406	$ 15,660		2,573,746
Issuance of restricted shares and stock based compensation (in shares)		1,566,000
Exercise of stock options	747,500	$ 2,500		745,000
Exercise of stock options (in shares)		250,000
Stock repurchase	$ (19,080,456)		$ (19,080,456)
Stock repurchase (in shares)	(3,875,855)		(3,875,855)
Comprehensive income/(loss) for the year	$ 47,482,160				51,936,829	(4,454,669)
Ending balance at Dec. 31, 2023	$ 549,663,961	$ 453,434	$ (44,453,836)	$ 446,938,868	$ 145,993,681	$ 731,814
Ending Balance, (in shares) at Dec. 31, 2023		45,343,428	(9,201,102)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net (loss)/income for the year	$ 51,936,829	$ 34,253,365	$ (35,123,208)
Adjustments to reconcile net (loss)/income to net cash provided by operating activities:
Depreciation	23,707,797	27,814,901	37,125,903
Amortization of deferred finance charges	1,345,940	855,472	1,157,804
Non-cash lease expense	99,379	104,168	89,638
Share based compensation	2,589,406	610,788	610,788
Change in fair value of derivatives	789,509	(1,964,307)	(240,153)
Equity earnings in joint ventures	(12,316,883)	(10,862,687)	(8,326,701)
Dividends received from joint ventures	14,589,215	9,486,900	0
Impairment loss	2,816,873	3,167,034	44,616,214
Net loss/(gain) on sale of vessels	(7,645,781)	408,637	304,210
(Increase)/decrease in
Trade and other receivables	238,627	(2,675,772)	(977,005)
Other current assets	139,925	28,470	10,624
Claims receivable	0	(500,249)	57,895
Inventories	1,365,189	(819,065)	644,079
Changes in operating lease liabilities	(99,379)	(104,168)	(89,638)
Advances and prepayments	(728,005)	(43,532)	(100,482)
Increase/(decrease) in
Balances with related parties	(1,532,943)	2,185,408	(3,231,923)
Trade accounts payable	(1,813,377)	3,328,208	262,569
Accrued liabilities	(100,515)	1,775,447	557,086
Deferred income	2,058,409	(486,805)	3,690,981
Net cash provided by operating activities	77,440,215	66,562,213	41,038,681
Cash flows from investing activities
Insurance proceeds	126,666	380,760	0
Vessels' acquisitions, advances for vessels under construction and improvement of vessels	(85,201)	(24,230,937)	(25,224,746)
Proceeds from sale of vessels, net	80,109,781	25,027,379	7,795,790
Increase in short-term investments	0	(26,500,000)	0
Maturity in short-term investments	26,500,000	0	0
Investment in joint ventures	0	0	(3,348,675)
Return of investments from joint ventures	4,688,785	8,066,100	1,530,000
Net cash (used in)/provided by investing activities	111,340,031	(17,256,698)	(19,247,631)
Cash flows from financing activities
Proceeds from exercise of stock options	747,500	0	0
Stock repurchase	(19,080,456)	0	0
Deferred finance charges paid	(988,165)	(534,600)	(1,463,766)
Advances from joint ventures	11,847	4,428,713	0
Advances to joint ventures	0	(5,565,396)	0
Customer deposits paid	0	0	(600,000)
Loan repayments	(154,870,215)	(83,579,825)	(173,012,428)
Proceeds from long-term debt	0	59,400,000	150,650,000
Cash retained by Imperial at spin-off	0	0	(4,704,521)
Net cash used in financing activities	(174,179,489)	(25,851,108)	(29,130,715)
Net (decrease)/increase in cash and cash equivalents and restricted cash	14,600,757	23,454,407	(7,339,665)
Cash and cash equivalents and restricted cash at beginning of year	69,154,944	45,700,537	53,040,202
Cash and cash equivalents and restricted cash at end of year	83,755,701	69,154,944	45,700,537
Cash breakdown
Cash and cash equivalents	77,202,843	55,770,823	31,304,151
Restricted cash, current	659,137	2,519,601	2,198,775
Restricted cash, non-current	5,893,721	10,864,520	12,197,611
Total cash, cash equivalents and restricted cash shown in the statements of cash flows	83,755,701	69,154,944	45,700,537
Supplemental Cash Flow Information:
Cash paid during the year for interest, net of amounts capitalized	14,695,487	9,760,448	8,607,590
Non cash investing activity – Vessels	63,752	135,481	217,570
Non cash financing activity – Deferred finance charges	985,833	165,666	0
Distribution of net assets of Imperial Petroleum Inc. to stockholders (Note 1)	$ 0	$ 0	$ 57,162,103

Basis of Presentation and Gener

Basis of Presentation and General Information	12 Months Ended
	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and General Information	1. Basis of Presentation and General Information The accompanying consolidated financial statements include the accounts of StealthGas Inc. and its wholly owned subsidiaries (collectively, the “Company”) which, as of December 31, 2023 owned a fleet of twenty-seven liquified petroleum gas (LPG) carriers providing worldwide marine transportation services under long, medium or short-term charters. StealthGas Inc. was formed under the laws of Marshall Islands on December 22, 2004. The Company’s vessels are managed by Stealth Maritime Corporation S.A. (the “Manager”), a company controlled by members of the family of the Company’s Chief Executive Officer. The Manager, a related party, was incorporated in Liberia and registered in Greece on May 17, 1999 under the provisions of law 89/1967, 378/1968 and article 25 of law 27/75 as amended by article 4 of law 2234/94. (See Note 3). During 2021, 2022 and 2023, the following charterers accounted for 10% or more of the Company’s revenues. Year ended December 31, Charterer 2021 2022 2023 A —  16 % 20 % B —  —  14 % On December 3, 2021, the Company completed the spin-off “Spin-off”) The assets and liabilities of Imperial on December 3, 2021, were as follows: December 3, 2021 Cash, including restricted cash 4,704,521 Trade and other receivables 2,488,560 Inventories 270,489 Advances and prepayments 244,725 Vessels, net (after impairment of $40,185,873) 80,500,000 Trade accounts payable (1,618,146 ) Accrued and other liabilities (312,642 ) Deferred income (943,404 ) Customer deposits (368,000 ) Debt (27,804,000 ) Net assets of Imperial distributed to stockholders 57,162,103

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies Principles of Consolidation: Use of Estimates: Other Comprehensive Income/(loss): Foreign Currency Translation: Cash and Cash Equivalents: Short-term Investments: non-current Restricted Cash: non-current Trade Receivables: un-collectible for doubtful accounts was required for the years ended December 31, 2021 and 2022. For the year ended December 31, 2023 a provision of $0.3 million was recorded. Claims Receivable: Inventories: first-in, first-out Vessels, net: itial repairs, improvements, acquisition and expenditures made to prepare the vessel for its initial voyage). Subsequent expenditures for conversions and Impairment of Vessels: 360-10, 360-10”), dry-docking Undiscounted cash flows are determined by considering the revenues from existing charters for those vessels that are employed on time charters and when there is no charter in place the estimates based on historical average rates. An impairment loss was identified and recorded for the years ended December 31, 2021, 2022 and 2023 (Note 6). Vessels’ Depreciation: Assets Held for Sale: 360-10, Segment Reporting: Accounting for Special Survey and Dry-docking dry-docking Deferred Finance Charges: non-current Accounting for Revenue and Related Expenses: A time charter is a contract for the use of a vessel for a specific period of time and a specified daily charter hire rate. A time charter generally provides typical warranties and owner protective restrictions. The performance obligations in a time charter are satisfied over the term of the contract beginning when the vessel is delivered to the charterer until it is redelivered back to the owner of the vessel. Some of the Company’s time charters may also contain profit sharing provisions, under which the Company can realize additional revenues in the event that spot rates are higher than the base rates in these time charters. A bareboat charter is a contract in which the vessel owner provides the vessel to the charterer for a fixed period of time at a specified daily rate, which is generally payable in advance, and the charterer generally assumes all risk and costs of operation during the bareboat charter period. The Company’s time charter and bareboat contracts are classified as operating leases pursuant to Accounting Standards Codification (“ASC”) 842 – Leases, because (i) the vessel is an identifiable asset (ii) the owner of the vessel does not have substantive substitution rights and (iii) the charterer has the right to control the use of the vessel during the term of the contract and derives the economic benefits from such use. Time charter and bareboat revenues are recognized when a charter agreement exists, the vessel is made available to the charterer and collection of the related revenue is reasonably assured. Time charter and bareboat charter revenues are recognized as earned on a straight-line basis over the term of the charter as service is provided. Revenues from profit sharing arrangements in time charters are recognized in the period earned. Under time and bareboat charter agreements, all voyages expenses, except commissions are assumed by the charterer, while under bareboat charter agreements, the charterer also assumes responsibility for all vessel operating expenses, dry-docking The Company, elected to make use of a practical expedient for lessors, not to separate the lease and non-lease non-lease non-lease A voyage charter is a contract, in which the vessel owner undertakes to transport a specific amount and type of cargo on a load port-to-discharge lay-time Deferred income represents cash received for undelivered performance obligations and deferred revenue resulting from straight-line revenue recognition in respect of charter agreements that provide for varying charter rates. The portion of the deferred revenue that will be earned within the next twelve months is classified as current liability and the remaining as long-term liability. Vessel voyage expenses are direct expenses to voyage revenues and primarily consist of brokerage commissions, port expenses, canal dues and bunkers. Brokerage commissions are paid to shipbrokers for their time and efforts for negotiating and arranging charter party agreements on behalf of the Company and expensed over the related charter period and all the other voyage expenses are expensed as incurred except for expenses during the ballast portion of the voyage. Any expenses incurred during the ballast portion of a voyage (period between the contract date and the date of the vessel’s arrival to the load port) such as bunker expenses, canal tolls and port expenses are deferred and are recognized on a straight-line basis, in voyage expenses, over the voyage duration as the Company satisfies the performance obligations under the contract provided these costs are (1) incurred to fulfill a contract that the Company can specifically identify, (2) able to generate or enhance resources of the company that will be used to satisfy performance of the terms of the contract, and (3) expected to be recovered from the charterer. These costs are considered ‘contract fulfillment costs’ and are included in ‘other current assets’ in the accompanying consolidated balance sheets. Vessel operating expenses comprise all expenses relating to the operation of the vessel, including crewing, repairs and maintenance, insurance, stores, lubricants and other operating expenses. Vessel operating expenses are expensed as incurred. Equity Compensation Plan: non-vested non-employee non-vested Stock repurchases : Earnings/(Loss) per Share: two-class Derivatives (i) Hedge Accounting Contracts which meet the strict criteria for hedge accounting are accounted for as cash flow hedges. A cash flow hedge is a hedge of the exposure to variability in cash flows that is attributable to a particular risk associated with a recognized asset or liability, or a highly probable forecasted transaction that could affect profit or loss. The effective portion of the gain or loss on the hedging instrument is recognized directly as a component of “Accumulated other comprehensive income” in equity, while the ineffective portion, if any, is recognized immediately in current period earnings within “Interest and finance costs”. The Company discontinues cash flow hedge accounting if the hedging instrument expires and it no longer meets the criteria for hedge accounting or designation is revoked by the Company. At that time, any cumulative gain or loss on the hedging instrument recognized in equity is kept in equity until the forecasted transaction occurs. When the forecasted transaction occurs, any cumulative gain or loss on the hedging instrument is recognized in the statement of income within “Interest and finance costs”. If a hedged transaction is no longer expected to occur, the net cumulative gain or loss recognized in equity is transferred to net profit or loss for the year within “Interest and finance costs”. (ii) Other Derivatives Investments in joint ventures: h invest Leases – The Company as a Lessee: Right-of-use The Company elected the practical expedient of ASC 842 that allowed for time charter-in right-of-use right-of-use liabilities in the consolidated balance sheet for time charter-in lease Recent Accounting Pronouncements:

Transactions with Related Parti

Transactions with Related Parties	12 Months Ended
	Dec. 31, 2023
Related Party Transactions [Abstract]
Transactions with Related Parties	3. Transactions with Related Parties The Manager provides the vessels with a wide range of shipping services such as chartering, technical support and maintenance, insurance, consulting, financial and accounting services, for a fixed daily fee of $440 per vessel operating under a voyage or time charter (except for two amount The Manager provides crew management services to the Company’s vessels (except for two The Manager also acts as a sales and purchase broker for the Company in exchange for a commission fee equal to 1% of the gross sale or purchase price of vessels or companies. The commission fees relating to vessels purchased (“Commissions – vessels purchased”) are capitalized to the cost of the vessels as incurred. For the years ended December 31, 2021, 2022 and 2023, the amounts of $0.3 million, nil, and nil, respectively, were capitalized to the cost of the vessels. The commission fees relating to vessels sold (“Commissions – vessels sold”) and the assets held for sale (“Commissions – assets held for sale”) are included in the consolidated statement of operations. In addition to management services, the Company reimburses the Manager for the compensation of its Chief Executive Officer, its Chief Financial Officer, its Internal Auditor and its Chief Technical Officer (the “Executive compensation”). The current account balance with the Manager at December 31, 2022 2023 Furthermore, the current account balance with entities that the Company owns 50.1% equity interests (Note 7) amounted to a liability of nil and $11,847 as of December 31, 2022 and 2023, respectively. The liability mainly represents revenues collected by the Company on behalf of these entities. The Company rents office space from the Manager and incurs a rental expense (the “Rental expense”) (Note 18). The amounts charged by the Company’s related parties comprised the following: Year ended December 31, Location in statement of operations 2021 2022 2023 Management fees Management fees – related party 5,831,900 5,242,990 4,531,920 Brokerage commissions Voyage expenses – related party 1,867,100 1,871,071 1,779,488 Superintendent fees Vessels’ operating expenses – related party 117,000 120,000 110,500 Crew management fees Vessels’ operating expenses – related party 948,750 915,450 800,750 Commissions – vessels sold Net loss/(gain) on sale of vessels 81,000 120,250 728,150 Commissions – assets held for sale Impairment loss 125,000 108,000 353,400 Executive compensation General and administrative expenses 1,028,386 924,503 970,382 Rental expense General and administrative expenses 97,726 88,326 104,167 On May 18, 2021, the Company entered into an agreement with Brave for the acquisition of a call option to acquire 51% interests in Gas Enterprises International Inc. with an exercise price of $1,398,675. The Company paid to Brave an option premium of $1,950,000. The option was exercised in 2021 and Gas Enterprises International Inc. was contributed by its owners to MGC Agressive Holdings Inc. (Note 7). Gas Enterprises International Inc. had an LPG vessel under construction which was delivered in 2023. During July 2022, the Company entered into memoranda of agreement with companies affiliated with members of the family of the Company’s Chief Executive Officer for the acquisition of two LPG vessels for a total cost . Advances paid for the acquisition of these vessels amounted of December 31, 2022 and 2023 (Note 5). Both vessels, the Eco Oracle and the Eco Wizard, were delivered to the Company in January 2024. The Company paid to Brave a supervision fee of $550,000 per vessel in accordance with the agreement between the Company and Brave for the supervision of the construction of the two vessels.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2023
Inventory Disclosure [Abstract]
Inventories	4. Inventories The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: December 31, 2022 2023 Bunkers 1,386,265 746,147 Lubricants 1,677,746 1,233,536 Total 3,064,011 1,979,683

Advances for Vessels' Acquisiti

Advances for Vessels' Acquisitions	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Advances for Vessels' Acquisitions	5. Advances for Vessels’ Acquisitions For the years ended December 31, 2022 and 2023, the movement of the account, advances for vessels’ acquisitions was as follows: Balance, December 31, 202 1 —  Advances for vessels’ acquisitions 23,400,000 Balance, December 31, 2022 23,400,000 Other capitalized expenses 14,570 Balance, December 31, 2023 23,414,570 The amount of $23,400,000 paid during 2022

Vessels, net

Vessels, net	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Vessels, net	6. Vessels, net The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: Vessel cost Accumulated Depreciation Net Book Value Balance, December 31, 2021 872,676,077 (191,338,924 ) 681,337,153 Additions 748,848 —  748,848 Impairment loss (22,779,899 ) 19,612,865 (3,167,034 ) Disposals (12,046,017 ) —  (12,046,017 ) Transfer to Assets held for sale (10,579,596 ) —  (10,579,596 ) Depreciation for the year —  (27,814,901 ) (27,814,901 ) Balance, December 31, 2022 828,019,413 (199,540,960 ) 628,478,453 Additions —  —  —  Impairment loss (15,722,992 ) 12,906,119 (2,816,873 ) Disposals (78,933,759 ) 15,908,259 (63,025,500 ) Transfer to Assets held for sale (34,633,200 ) —  (34,633,200 ) Depreciation for the year —  (23,707,797 ) (23,707,797 ) Balance, December 31, 2023 698,729,462 (194,434,379 ) 504,295,083 On included in the Company’s consolidated statement of operations under the caption “Net loss/(gain) on sale of vessels” for the year ended December 31, 2022. As of June 30, 2021, the Company performed an impairment review of its vessels held for use, due to the prevailing conditions in the shipping industry. As a result of the impairment review, undiscounted net operating cash flows exceeded each vessel’s carrying value with the exception of two vessels and therefore the Company identified and recorded an impairment loss of $1,971,148 which is presented under the caption “Impairment loss” in the consolidated statements of operations. On July 28, 2021, the Company concluded a memorandum of agreement for the disposal of the vessel “Gas Imperiale” to an unaffiliated third party for $8,100,000. The vessel was delivered to her new owners on September 14, 2021. The Company disposed the vessel “Gas Imperiale” as the agreed selling price was a suitable opportunity for the Company and realized an aggregate loss from the sale of this vessel of $304,210 which is included in the Company’s consolidated statement of operations under the caption “Net loss/(gain) on sale of vessels” for the year ended December 31, 2021. As of December 31, 2021, the Company performed an impairment review of its vessels, due to the prevailing conditions in the shipping industry. As a result of the impairment review, undiscounted net operating cash flows exceeded each vessel’s carrying value with the exception of two vessels and therefore the Company identified and recorded an impairment loss of $1,333,950 which is presented under the caption “Impairment loss” in the consolidated statements of operations. On February 14, 2022, the Company concluded a memorandum of agreement for the disposal of the vessel “Gas Inspiration” to an unaffiliated third party for $9,650,000. The vessel was delivered to her new owners on March 22, 2022. The Company disposed the vessel “Gas Inspiration” as the agreed selling price was a suitable opportunity for the Company and realized an aggregate loss from the sale of this vessel of $345,278 which is included in the Company’s consolidated statement of operations under the caption “Net loss/(gain) on sale of vessels” for the year ended December 31, 2022. As of March 31, 2022, the Company performed an impairment review of its vessels held for use, due to the prevailing conditions in the shipping industry. As a result of the impairment review, undiscounted net operating cash flows exceeded each vessel’s carrying value with the exception of one vessel and therefore the Company identified and recorded an impairment loss of $529,532 which is presented under the caption “Impairment loss” in the consolidated statements of operations. On April 19, 2022, the Company entered into a memorandum of agreement for the disposal of the vessel “Gas Monarch” to an unaffiliated third party for $2,375,000. The vessel was delivered to her new owners on May 23, 2022. The Company disposed the vessel “Gas Monarch” as the agreed selling price was a suitable opportunity for the Company and realized an aggregate loss from the sale of this vessel of $90,855 which is included in the Company’s consolidated statement of operations under the caption “Net loss on sale of vessels” for the year ended December 31, 2022. On November 24, 2022, the Company entered into a memorandum of agreement for the disposal of the vessel “Gas Prodigy” to an unaffiliated third party for $5,100,000. The vessel was classified as vessel held for sale as of December 31, 2022 and was recorded at its selling price of $5,100,000 less estimated selling expenses of $170,093. The total impairment charge recognized in the Company’s consolidated statement of operations for the year ended December 31, 2022 amounted to $2,026,333. The Company decided to dispose the vessel “Gas Prodigy” as the agreed selling price was a suitable opportunity for the Company. The vessel was delivered to her new owners on January 4, 2023. On December 15, 2022, the Company entered into a memorandum of agreement for the disposal of the vessel “Gas Spirit” to an unaffiliated third party for $5,700,000. The vessel was classified as vessel held for sale as of December 31, 2022 and was recorded at its selling price of $5,700,000 less estimated selling expenses of $50,311. The total impairment charge recognized in the Company’s consolidated statement of operations for the year ended December 31, 2022 amounted to $565,591. An amount of $1,140,000 in connection with this sale was collected in December 2022 and was included under the caption “Accrued and other liabilities” in the consolidated balance sheet as of December 31, 2022. The Company decided to dispose the vessel “Gas Spirit” as the agreed selling price was a suitable opportunity for the Company. The vessel was delivered to her new owners on January 19, 2023 and the Company realized a loss from the sale of this vessel of $23,354 which is included in the Company’s consolidated statement of operations under the caption “Net loss/(gain) on sale of vessels” for the year ended December 31, 2023. As of December 31, 2022, the vessels Gas Prodigy and Gas Spirit, together with their inventories on board amounting to $527,586, were classified as assets held for sale in the accompanying consolidated balance sheet. On and an impairment loss of $57,240 was recognized in the Company’s consolidated statement of operations for the year ended December 31, 2023. On April 26, 2023, the Company entered into four memorandum of agreements for the disposal of the vessels “Eco Texiana”, “Eco Enigma”, “Eco Czar” and “Eco Nemesis” to an unaffiliated third party for a total of $70,715,000. The vessels “Eco Texiana”, “Eco Enigma”, “Eco Czar” and “Eco Nemesis” were delivered to their new owner on May 26, 2023, June 14, 2023, July 18, 2023 and August 4, 2023 respectively. The Company realized an aggregate gain from the sale of the vessels of $7,669,135 which is included in the Company’s consolidated statement of operations under the caption “Net loss/(gain) on sale of vessels” for the year ended December 31, 2023. On May 26, 2023, the Company entered into two memorandum of agreements for the disposal of the vessels “Eco Green” and “Eco Dream” to unaffiliated third parties for a total The Company decided to dispose these vessels as the agreed selling price was a suitable opportunity for the Company. The vessel “Eco Green” was delivered to her new owners on January 9, 2024, whereas the vessel “Eco Dream” was delivered to her owners on January 17, 2024. These vessels, together with their inventories on board amounting to $246,725, were classified as assets held for sale as of December 31, 2023 and were recorded at their selling price of $35,340,000 less estimated selling expenses of $706,800. The total impairment charge recognized in the Company’s consolidated statement of operations for the year ended December 31, 2023 amounted to $2,759,553. As of December 31, 2023, the Company performed an impairment review of its vessels held for use, due to the prevailing conditions in the shipping industry. As a result of the impairment review, undiscounted net operating cash flows exceeded each vessel’s carrying value. As of December 31, 2023, 12 vessels with a carrying value of (2022: 28 been mortgaged as collateral as security to the Company’s bank loans (Note 9).

Investments in Joint Ventures

Investments in Joint Ventures	12 Months Ended
	Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Investments in Joint Ventures	7. Investments in joint ventures Details of each of the Company’s joint ventures at December 31, 2022 and 2023 are as follows: Proportion of ownership interest held by Name of joint venture Principal activity December 31, 2022 December 31, 2023 Spacegas Inc. Ownership and operation of the vessel “Gas Defiance” 50.1 % 50.1 % Financial Power Inc. Ownership and operation of the vessel “Gas Shuriken” 50.1 % 50.1 % Cannes View Inc Ownership and operation of the vessel “Gas Haralambos” 50.1 % 50.1 % Colorado Oil and Gas Inc. Ownership and operation of the vessel “Eco Lucidity” 50.1 % 50.1 % Frost Investments Corp. Inc. Ownership and operation of the vessel “Eco Nebula” 1 50.1 % 50.1 % MGC Agressive Holdings Inc. Ownership and operation of the vessels “Eco Evoluzione”* 2 3 4 51.0 % 51.0 % 1 The vessel Eco Nebula was sold to an unrelated party on August 9, 2022 2 The vessel Eco Evoluzione was sold to an unrelated party on March 29, 2023 3 The vessel Gaschem Bremen was renamed Eco Ethereal on April 18, 2023 4 The vessel Eco Sorcerer was delivered to the fleet on October 6, 2023 The Company’s exposure is limited to its share of the net assets of Spacegas Inc., Financial Power Inc., Cannes View Inc., Colorado Oil and Gas Inc., Frost Investments Corp. Inc. and MGC Agressive Holdings Inc. (collectively “the joint venture entities”) proportionate to its equity interest in these companies and to any losses that may arise in connection with the loan agreements guaranteed by the Company (Note 17). The Company shares the profits and losses, cash flows and other matters relating to its investments in the joint venture entities in accordance with its ownership percentage. The Company accounts for investments in joint ventures using the equity method since it has joint control over the joint venture entities. The Company does not consolidate the joint venture entities because it does not have a controlling financial interest. The significant factors considered and judgments made in determining that the power to direct the activities of the joint venture entities that most significantly impact their economic performance are shared, are that all significant business decisions over operating and financial policies of the joint venture entities, require consent from each joint venture investor. Below is a table of equity investment activity: Year Ended December 31, 2022 2023 Beginning balance $ 53,323,032 $ 46,632,720 Dividends received (17,552,999 ) (19,278,000 ) Equity earnings 10,862,687 12,316,883 Investments in joint ventures $ 46,632,720 $ 39,671,603 As of December 31, 2022 and 2023, the carrying value of the Company’s equity method investments was $1.95 million and $1.93 million, respectively, higher than its interest in the investee’s underlying net assets. This basis difference relates to a vessel that was under construction during 2022 and was delivered in 2023 and will be amortized over the vessel’s useful life. On December 12, 2023, as a result of the decision of the charterer of the vessel “Eco Ethereal” to exercise its option to acquire the vessel upon expiration of its charter in April 2024, the ship owning company of the vessel entered into a memorandum of agreement for the disposal of its vessel for $43,000,000. A 20% deposit was received by the joint venture on November 8, 2023. The vessel was delivered to her new owners on April 23, 2024.

Accrued and Other Liabilities

Accrued and Other Liabilities	12 Months Ended
	Dec. 31, 2023
Payables and Accruals [Abstract]
Accrued and Other Liabilities	8. Accrued and Other Liabilities The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: December 31, 2022 2023 Interest on long-term debt 3,540,755 2,093,401 Administrative expenses 177,551 145,418 Vessel operating and voyage expenses 2,065,686 3,442,325 Proceeds from sale of vessel collected in advance 1,140,000 —  Total 6,923,992 5,681,144

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Long-term Debt	9. Long-term Debt Term Loans Issue Date/ Refinancing Date Maturity Date Drawn Amount December 31, 2022 December 31, 2023 January 2021 January 2026 25,000,000 19,645,000 —  January 2021 January 2028 43,800,000 30,893,547 —  May 2016 December 2025 65,650,000 44,635,980 21,234,160 March 2017 April 2026 70,787,500 47,399,991 42,343,739 April 2020 February 2027 34,450,000 30,884,026 —  August 2021 August 2026 60,000,000 50,304,660 29,260,092 December 2021 January 2028 59,400,000 55,224,000 31,279,000 Total 278,987,204 124,116,991 Current portion of long-term debt 30,666,756 16,863,076 Long-term debt 248,320,448 107,253,915 Total debt 278,987,204 124,116,991 Current portion of deferred finance charges 582,950 238,603 Deferred finance charges non-current 1,291,625 335,740 Total deferred finance charges 1,874,575 574,343 Total debt 278,987,204 124,116,991 Less: Total deferred finance charges 1,874,575 574,343 Total debt, net of deferred finance charges 277,112,629 123,542,648 Less: Current portion of long-term debt, net of current portion of deferred finance charges 30,083,806 16,624,473 Long-term debt 247,028,823 106,918,176 Changes in the Company’s outstanding term loans as of December 31, 2022 and 2023 are as follows: For the year 2022: In December 2021, the Company entered into a loan agreement of $59,400,000 with a bank in order to refinance certain existing term loans which had an outstanding balance as of December 31, 2021 amounting to $44,666,018. The new term loan was drawn in three tranches during January 2022 and carries interest at Secured Overnight Financing Rate (“SOFR”) plus a margin. Each tranche is repayable in 24 equal quarterly installments and a balloon payment payable together with the last installment in January 2028. In January 2022, the Company prepaid $6.2 million of the term loan dated January 2021 with original maturity date January 2028 with cash on hand and the related mortgage on the vessel Eco Loyalty was released. For the year 2023: In February 2023, the Company prepaid $5.9 million of the term loan dated August 2021 with original maturity date August 2026 using cash on hand and the related mortgages on the vessels Gas Astrid and Gas Exelero were released. In March 2023 and in June 2023, the Company prepaid a total of $ million of the term loan dated January 2021 with original maturity date using cash on hand and the related mortgages on the vessels Eco Corsair, Eco Royalty, Eco Czar, Eco Nemesis and Eco Elysium were released. Following this loan repayment, the Swaps 5 and 6 (Note 10) were terminated and an amount of $ million was collected from the respective counterparty. In March 2023, the Company entered into a loan agreement of $70,000,000 with a bank in order to finance the acquisition of the vessels Eco Oracle and the Eco Wizard that were acquired from affiliated entities in January 2024 (Note 3). The term loan was fully drawn down in two equal tranches, the first of which was drawn down on January 9, 2024, and the second one was drawn down on January 31, 2024. The term Loan will be repaid in thirty two quarterly installments plus a balloon payment payable together with the last instalment for each vessel in January 2032. In May 2023, the Company prepaid $29.9 million of the term loan dated April 2020 with original maturity date February 2027 using cash on hand and the related mortgages on the vessels Eco Alice and Eco Blizzard were released. In May 2023, the Company prepaid $19.2 million of the term loan dated December 2021 with original maturity date January 2028 using cash on hand and the related mortgages on the vessels Eco Enigma and Eco Texiana were released. In June 2023, the Company prepaid $18.2 million of the term loan dated January 2021 Following this loan repayment, the Swap 4 (Note 10) was terminated and an amount of $1.2 million was collected from the respective counterparty. In June 2023, the Company prepaid $ million of the term loan dated May 2016 with original maturity date using cash on hand and the related mortgage on the vessel Eco Frost was released. Following this loan repayment, the Swaps 1 and 3 (Note 10) were terminated and an amount of $0.7 million was collected from the respective counterparty. In July 2023, the Company prepaid $8.7 million of the term loan dated August 2021 with original maturity date August 2026 using cash on hand and the related mortgages on the vessel Eco Dream was released. Furthermore, during 2023 the Company made scheduled principal payments in connection with its term loans amounting to $23.0 million. The above loans are generally repayable in quarterly or semi-annual installments and a balloon payment at maturity and are secured by first priority mortgages over the vessels involved, plus the assignment of the vessels’ insurances, earnings and operating and retention accounts with the lenders, and the guarantee of ship-owning companies, as owners of the vessels. The term loans contain financial covenants requiring the Company to ensure that: • the aggregate market value of the mortgaged vessels at all times exceeds a certain percentage of the amounts outstanding as defined in the term loans, ranging from 120% to 135%, • the leverage of the Company defined as Total Debt net of Cash should not exceed 80% of total market value adjusted assets, • the Interest Coverage Ratio of the Company which is EBITDA (as defined in the loan agreements) to interest expense to be at all times greater than 2.5:1, • at least a certain percentage of the Company is to always be owned by members of the Vafias family, • the Company should maintain on a monthly basis a cash balance amounting to $659,137 representing a proportionate amount of the next instalment and relevant interest plus a minimum aggregate cash balance amounting to $5,893,721 in the earnings accounts with the relevant banks as well as a free cash balance of $10,000,000 at the end of each quarter. • dividends paid by the borrower will not exceed 50% of the Company’s free cash flow in any rolling 12 month period. The interest rates on the outstanding loans as of December 31, 2023 are based on SOFR plus a margin (2021 and 2022: LIBOR plus a margin) which varies from 1.85% to 2.15%. The average interest rates (including the margin) on the above outstanding loans for the applicable periods were: Year ended December 31, 2021: 2.88% Year ended December 31, 2022: 4.20% Year ended December 31, 2023: 7.07% Bank loan interest expense for the above loans for the years ended December 31, 2021, 2022 and 2023 amounted to $8,684,097, $11,446,312 and $13,250,267 respectively. Of these amounts, for the years ended December 31, 2021, 2022 and 2023, the amounts of $20,060, nil and nil respectively, were capitalized as part of advances paid for vessels under construction. Furthermore, a total amount of $3.9 million that was collected during 2023 relating to the termination of Swaps 1, 3, 4, 5, 6 (Note 10) has been included in interest and finance costs in the consolidated statements of operations for the year ended December 31, 2023. Interest expense, net of interest capitalized, is included in interest and finance costs in the consolidated statements of operations. For the years ended December 31, 2021, 2022 and 2023, the amortization of deferred financing charges amounted to $1,157,804, $855,472 and $1,345,940 respectively, and is included in interest and finance costs in the consolidated statements of operations. At December 31, 2023, the Company was in compliance with all of its debt financial covenants. The annual principal payments to be made, for the abovementioned loans, after December 31, 2023, are as follows: December 31, Amount 2024 16,863,076 2025 33,952,596 2026 54,058,319 2027 4,012,000 Thereafter 15,231,000 Total 124,116,991

Derivatives and Fair Value Disc

Derivatives and Fair Value Disclosures	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Derivatives and Fair Value Disclosures	10. Derivatives and Fair Value Disclosures The Company uses interest rate swaps for the management of interest rate risk exposure. The interest rate swaps effectively convert a portion of the Company’s debt from a floating to a fixed rate. The Company is a party to two floating-to-fixed to which it pays fixed rates and receives floating rates based on the SOFR (2022: LIBOR). These agreements contain no leverage features. As of December 31, 2023 one derivative contract (2022: six contracts) qualified for hedge accounting since its inception. The following table presents information relating to the Company’s interest rate swap arrangements as of December 31, 2022 and 2023. Effective date Termination Fixed Floating Rate Fair Value December 31, Notional Amount December 31, Fair Value December 31, Notional Amount December 31, Swap 1 August 16, 2017 June 21, 2023 2.12 % $ 536,901 $ 10,664,750 —   —   Swap 2 April 10, 2018 December 11, 2.74 % $ 955,139 $ 23,308,000 $ 731,814 $ 21,236,000 Swap 3 February 16, 2019 June 21, 2023 2.89 % $ 256,813 $ 10,664,750 —   —   Swap 4 January 21, 2021 June 13, 2023 0.73 % $ 1,398,984 $ 11,866,750 —   —   Swap 5 January 21, 2021 March 31, 0.73 % $ 1,393,330 $ 11,829,250 —   —   Swap 6 January 21, 2021 March 31, 0.74 % $ 864,286 $ 7,197,547 —   —   Swap 7 February 5, 2022 June 30, 2026 1.49 % $ 1,697,402 $ 25,152,330 $ 1,126,863 $ 21,274,194 Total $ 7,102,855 $ 100,683,377 $ 1,858,677 $ 42,510,194 The following tables present information on the location and amounts of derivatives’ fair values reflected in the consolidated balance sheets and with respect to gains and losses on derivative positions reflected in the consolidated statements of operations or in the consolidated balance sheets, as a component of accumulated other comprehensive income. Tabular disclosure of financial instruments is as follows: December 31, 2022 2023 Derivatives designated as hedging instruments Balance Sheet Location Asset Derivatives Liability Derivatives Asset Derivatives Liability Derivatives Interest Rate Swap Agreements Non current assets — Fair value of derivatives 5,405,453 —  731,814 —  Total derivatives designated as hedging instruments 5,405,453 —  731,814 —  December 31, 2022 2023 Derivatives not designated as hedging instruments Balance Sheet Location Asset Derivatives Liability Derivatives Asset Derivatives Liability Derivatives Interest Rate Swap Agreements Non current assets — Fair value of derivatives 1,697,402 —  1,126,863 —  Total derivatives not designated as hedging instruments 1,697,402 —  1,126,863 —  The effect of derivative instruments on the consolidated statements of operations for the years ended December 31, 2021, 2022 and 2023 is as follows: Location of Gain/(Loss) Year Ended December 31, Derivatives not designated as hedging instruments Recognized 2021 2022 2023 Interest Rate Swap — Reclassification from OCI Gain on derivatives 265,610 —  —  Interest Rate Swap — Change in Fair Value Gain on derivatives —  1,697,401 (570,539 ) Interest Rate Swap — Realized (expense)/income Gain on (25,457 ) 1,061 808,157 Total gain on derivatives 240,153 1,698,462 237,618 Location of (Loss)/Gain Year Ended December 31, Derivatives designated as hedging instruments Recognized 2021 2022 2023 Interest Rate Swap — Realized (expense)/income Interest and finance costs (2,183,187 ) (126,241 ) 4,771,235 Total loss on derivatives (2,183,187 ) (126,241 ) 4,771,235 The components of accumulated other comprehensive income included in the accompanying consolidated balance sheets consist of unrealized gain / (loss) on cash flow hedges relating to the Company’s interest rate swap contracts and are analyzed as follows: Unrealized Balance, January 1, 2021 (4,952,823 ) Other comprehensive loss before reclassifications (68,699 ) Amounts reclassified from accumulated other comprehensive loss relating to qualifying hedges 2,183,187 Other reclassification adjustments (265,610 ) Balance, December 31, 2021 (3,103,945 ) Other comprehensive income before reclassifications 8,164,187 Amounts reclassified from accumulated other comprehensive loss relating to qualifying hedges 126,241 Balance, December 31, 2022 5,186,483 Other comprehensive income 316,566 Amounts reclassified from accumulated other comprehensive income relating to qualifying hedges (4,771,235 ) Balance, December 31, 2023 731,814 Fair Value of Financial Instruments and Concentration of Credit Risk non-performance rates offered to the Company for similar debt of the same remaining maturities. Their carrying value approximates their fair market value due to their variable interest rate, being SOFR. SOFR rates are observable at commonly quoted intervals for the full terms of the loans and hence floating rate loans are considered Level 2 items in accordance with the fair value hierarchy. Additionally, the Company considers the creditworthiness of each counterparty when determining the fair value of the derivative instruments. The Company’s interest rate swap agreements are recorded at fair value. The fair value of the interest rate swaps is determined using a discounted cash flow method based on market-based SOFR swap yield curves. SOFR swap rates are observable at commonly quoted intervals for the full terms of the swap and therefore are considered Level 2 items. Fair Value Disclosures: Level 1: Quoted market prices in active markets for identical assets or liabilities. Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data. Level 3: Unobservable inputs that are not corroborated by market data. The following table presents the fair values for assets and liabilities measured on a recurring basis categorized into a Level based upon the lowest level of significant input to the valuations as of December 31, 2022: Fair Value Measurements Using Description Fair Value as of 2022 Quoted Prices in Active Significant Significant (Level 3) Assets: Interest Rate Swap Agreements 7,102,855 —  7,102,855 —  Total 7,102,855 —  7,102,855 —  The following table presents the fair values for assets and liabilities measured on a recurring basis categorized into a Level based upon the lowest level of significant input to the valuations as of December 31, 2023: Fair Value Measurements Using Description Fair Value as of 2023 Quoted Prices in Active Significant Significant (Level 3) Assets: Interest Rate Swap Agreements 1,858,677 —  1,858,677 —  Total 1,858,677 —  1,858,677 —  The following tables present the fair values for assets measured on a non-recurring Fair Value Measurements Using Description Fair Value as of Quoted Prices Significant Other Significant Impairment Long-lived assets held and used 2,375,000 —  2,375,000 —  (529,532 ) Total 2,375,000 —  2,375,000 —  (529,532 ) As a result of the impairment analysis performed as of March 31, 2022, the vessel Gas Monarch (held and used) was written down to its estimated fair value as determined by the Company based on the recent transaction price, resulting in an impairment charge of $529,532. This vessel was sold on May 23, 2022 (Note 6). Fair Value Measurements Using Description Fair Value as of Quoted Prices (Level 1) Significant Significant (Level 3) Impairment Long-lived assets held for sale 10,800,000 —  10,800,000 —  (2,591,924 ) Long-lived assets held and used 2,100,000 2,100,000 (45,578 ) Total 12,900,000 —  12,900,000 —  (2,637,502 ) The vessels Gas Prodigy and Gas Spirit were classified as held for sale as of December 31, 2022 (Note 6) and were recognized at their fair value of $10,800,000 less costs to sell of $220,404. The fair value was determined based on the transaction price, as the sale price was agreed with unaffiliated third parties. Furthermore, as a result of the impairment analysis performed as of December 31, 2022, the vessel Gas Galaxy (held and used) was written down to its estimated fair value as determined by the Company based on the recent transaction price, resulting in an impairment charge of $57,320 (Note 6). Fair Value Measurements Using Description Fair Value as of Quoted Prices Significant Significant Impairment Long-lived assets held for sale 35,340,000 —  35,340,000 —  (2,759,553 ) Total 35,340,000 —  35,340,000 —  (2,759,553 ) The vessels Eco Green and Eco Dream were classified as held for sale as of December 31, 2023 (Note 6) and were recognized at their fair value of $35,340,000 less costs to sell of $ . The fair value was determined based on the transaction price, as the sale price was agreed with unaffiliated third parties.

Capital Stock, Treasury Stock a

Capital Stock, Treasury Stock and Additional Paid-in Capital	12 Months Ended
	Dec. 31, 2023
Federal Home Loan Banks [Abstract]
Capital Stock, Treasury Stock and Additional Paid-in Capital	11. Capital Stock, Treasury Stock and Additional Paid-in The amounts shown in the accompanying consolidated balance sheets as additional paid-in stock. In May 2023, the Company’s Board of Directors authorized the repurchase of up to $ of shares of the Company’s common stock, and in October 2023 a $ increase to this repurchase program for a total aggregate amount of $ . For the year ended December 31, 2023, the Company completed the repurchase of 3,875,855 common shares paying a total amount of $19,080,456. These shares are held as treasury stock by the Company. During the period from January 1, 2024 to April 26, 2024, 51,200 common shares have been repurchased. For the years ended December 31, 2021 and 2022, the Company did not make any repurchase of its common shares.

Equity Compensation Plan

Equity Compensation Plan	12 Months Ended
	Dec. 31, 2023
Share-based Payment Arrangement [Abstract]
Equity Compensation Plan	12. Equity Compensation Plan In 2015 the Company’s shareholders and board of directors adopted an Equity Compensation Plan (“the Plan”), which replaced the Company’s previous equity compensation plan which was adopted in 2007 and expired in 2015 (the “2007 Plan”) under which the Company’s employees, directors or other persons or entities providing significant services to the Company or its subsidiaries are eligible to receive stock-based awards including restricted stock, restricted stock units, unrestricted stock, bonus stock, performance stock, stock appreciation rights and options to purchase common stock. The Plan is administered by the Compensation Committee of the Company’s board of directors and the aggregate number of shares of common stock reserved under this plan cannot exceed 10% of the number of shares of the Restricted shares On May 26, 2021, the Company granted 343,744 of non-vested non-executive ed On February 21, 2023, the Company granted 284,000 of non-vested non-executive On May 24, 2023, the Company granted 449,000 of non-vested On December 8, 2023, the Company granted 833,000 of non-vested non-executive All unvested restricted shares are conditional upon the option holder’s continued service as an employee of the Company, or as a director until the applicable vesting date. Until the forfeiture of any restricted shares, the grantee has the right to vote such restricted shares, to receive and retain all regular cash dividends paid on such restricted shares and to exercise all other rights provided that the Company will retain custody of all distributions other than regular cash dividends made or declared with respect to the restricted shares. The Company pays dividends on all restricted shares regardless of whether they have vested and there is no obligation of the employee to return the dividend when employment ceases. The Company did not pay any dividends in the years ended December 31, 2021, 2022 and 2023. The stock based compensation expense for the vested and non-vested A summary of the status of the Company’s non-vested Number of Weighted average non-vested Non-vested, —   —   Granted 343,744 2.99 Non-vested, 343,744 2.99 Vested (171,872 ) 2.99 Non-vested, 171,872 2.99 Granted 1,566,000 4.83 Vested (620,872 ) 3.08 Non-vested, 1,117,000 5.52 The total fair value of shares vested during the years ended December 31, 2021, 2022 and 2023 was nil, $465,773 and $3,599,860, respectively, based on the closing share price at each vesting date. The remaining unrecognized compensation cost relating to the shares granted amounting to $5,392,703 as of December 31, 2023, is expected to be recognized over the remaining period of 1.9 years, according to the contractual terms of those non-vested Options to purchase common shares On May 26, 2021, the Company granted options to acquire up to 250,000 shares of common stock under the Plan to the Company’s CEO. 50% of these options vested on May 26, 2022 and the remaining 50% vest ed date. These options were exercised on August 3, 2023 and 250,000 common shares were acquired for a total consideration of $747,500. On February 21, 2023, the Company granted options to acquire up to 250,000 shares of common stock under the Plan to the Company’s CEO. 50% of these options vested on February 21, 2024 and the remaining 50% vest on February 21, 2025. These options expire on February 21, 2033. The fair value of each option granted was $1.47. The fair value of each option granted was estimated on the date of the grant using the Black-Scholes option pricing model. The following weighted-average assumptions were used in computing the fair value of the options granted: expected volatility of 50.20%; expected term of 5.75 years; risk-free interest rate of 4.06%. The expected term of the options granted was estimated to be the average of the vesting and the contractual term. The expected volatility was generally based on historical volatility as calculated using historical data during approximately 6 years prior to the grant date. 125,000 of these options were exercised on February 28, 2024 and 125,000 common shares were acquired for a total consideration of $356,250. On December 8, 2023, the Company granted options to acquire up to 299,000 shares of common stock under the Plan to the Company’s CEO and non-executive A summary of the Company’s non-vested Option Weighted- Exercise Outstanding – January 1, 2021 —  —  Granted 250,000 2.99 Exercised —  —  Outstanding – December 31, 2021 250,000 2.99 Exercisable – December 31, 2021 —  —  Granted —  —  Exercised —  —  Outstanding – December 31, 2022 250,000 2.99 Exercisable – December 31, 2022 —  —  Granted 250,000 2.85 Granted 299,000 6.43 Exercised (250,000 ) 2.99 Outstanding – December 31, 2023 549,000 4.80 Exercisable – December 31, 2023 —  —  No options vested during the year ended December 31, 2021. 125,000 options vested during the year ended December 31, 2022 and 125,000 options vested during the year ended December 31, 2023. The remaining unrecognized compensation cost relating to the options granted amounting to $1,096,710 as of December 31, 2023, is expected to be recognized over the remaining period of 1.9 years, according to the contractual terms of those non-vested The stock based compensation expense for the vested and non-vested , As at December 31, 2023, the weighted average intrinsic value of outstanding stock options was $ 1.66 per option.

Earnings_(loss) per share

Earnings/(loss) per share	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings/(loss) per share	13. Earnings/(loss) per share Basic earnings per share is computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding during the period. Diluted earnings per share give effect to all potentially dilutive securities. All of the Company’s shares (including non-vested The Company applies the two-class non-vested non-vested two-class non-vested For purposes of calculating diluted earnings per share, dividends declared during the period for non-vested non-vested non-vested The Company calculates basic and diluted earnings per share as follows: Year Ended December 31, 2021 2022 2023 Numerator Net (loss)/income (35,123,208 ) 34,253,365 51,936,829 Less: Undistributed earnings allocated to non-vested —  216,168 813,111 Net income/(loss) attributable to common shareholders, basic (35,123,208 ) 34,037,197 51,123,689 Denominator Weighted average number of shares outstanding, basic 37,858,437 37,961,560 37,166,449 Weighted average number of shares outstanding, diluted 37,858,437 37,961,673 37,236,951 (Loss)/Earnings per share, basic (0.93 ) 0.90 1.38 (Loss)/Earnings per share, diluted (0.93 ) 0.90 1.37 Non-vested, Non-vested, The Company excluded the dilutive effect of 343,744 non-vested share awards and the 250,000 unexercised options to acquire common shares in calculating dilutive EPS for its common shares as of December 31, 2021, as they were anti-dilutive. The Company excluded the dilutive effect of non-vested unexercised options to acquire common shares in calculating dilutive EPS for its common shares as of December 31, 2022, as they were anti-dilutive. As of December 31, 2023, diluted earnings per share reflects the potential dilution from the incremental shares of the unexercised options to acquire common shares and the non-vested share awards that had a dilutive effect.

Revenues

Revenues	12 Months Ended
	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenues	14. Revenues The amounts in the accompanying consolidated statements of operations are analyzed as follows: Year ended December 31, 2021 2022 2023 Time charter revenues 105,966,167 114,996,842 124,075,851 Bareboat revenues 9,624,684 2,340,791 —  Voyage charter revenues 33,813,496 32,156,474 18,268,798 Other income 800,180 3,266,781 1,183,120 Total 150,204,527 152,760,888 143,527,769 Time charter agreements may have renewal options for one to 12 months. The time charter party generally provides typical warranties regarding the speed and the performance of the vessel as well as some owner protective restrictions such that the vessel is sent only to safe ports by the charterer, subject always to compliance with applicable sanction laws, and carry only lawful and non-hazardous Vessels may also be chartered under voyage charters, where a contract is made for the use of a vessel under which the Company is paid freight on the basis of moving cargo from a loading port to a discharge port. A significant portion of the voyage hire is typically paid upon the completion of the voyage. The amount of revenue earned as demurrage relating to the Company’s voyage charters for the years ended December 31, 2021, 2022 and 2023 was $4.1 million, $3.4 million and $4.2 million, respectively and is included within “Voyage charter revenues” in the above table. As of December 31, 2022 and December 31, 2023, receivables from the Company’s voyage charters amounted to $1.5 million and $0.8 million, respectively. As of December 31, 2022 and 2023, the Company recognized $270,514 and $130,589, respectively, of contract fulfillment costs which mainly represent bunker expenses incurred prior to commencement of loading relating to the Company’s voyage charters. These costs are recorded in “Other current assets” in the consolidated balance sheets. As of December 31, 2022 and 2023, revenues relating to undelivered performance obligations of the Company’s voyage charters amounted to $1,912,239 and $993,982, respectively. The Company recognized these amounts as revenues in the first quarters of 2023 and 2024, respectively. Three of the time charters entered into in 2014, also grant the charterer an option to purchase the respective vessels during the time charter period, at stipulated prices, decreasing on a pro-rated

Vessel Operating Expenses

Vessel Operating Expenses	12 Months Ended
	Dec. 31, 2023
Text Block [Abstract]
Vessel Operating Expenses	15. Vessel Operating Expenses The amounts in the accompanying consolidated statements of operations are analyzed as follows: Year ended December 31, Vessels’ Operating Expenses 2021 2022 2023 Crew wages and related costs 38,454,397 34,721,673 32,676,466 Insurance 2,196,444 2,382,340 1,939,328 Repairs and maintenance 7,282,481 5,716,570 5,480,702 Spares and consumable stores 9,123,975 8,127,376 8,048,657 Miscellaneous expenses 4,452,266 3,996,819 4,972,345 Total 61,509,563 54,944,778 53,117,498

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	16. Income Taxes Under the laws of the countries of the companies’ incorporation and/or vessels’ registration, the companies are not subject to tax on international shipping income, however, they are subject to registration and tonnage taxes, which have been included in Vessel operating expenses in the consolidated statements of operations. Pursuant to the Internal Revenue Code of the United States (the “Code”), U.S. source income from the international operations of ships is generally exempt from U.S. tax if the Company operating the ships meets certain requirements. Among other things, in order to qualify for this exemption, the Company operating the ships must be incorporated in a country which grants an equivalent exemption from income taxes to U.S. corporations. All the Company’s ship-operating subsidiaries satisfy these initial criteria. In addition, these companies must be more than 50% owned by individuals who are residents, as defined, in the country of incorporation or another foreign country that grants an equivalent exemption to U.S. corporations. These companies also currently satisfy the more than 50% beneficial ownership requirement. In addition, the management of the Company believes that by virtue of a special rule applicable to situations where the ship-operating companies are beneficially owned by a publicly traded company like the Company, the more than 50% beneficial ownership requirement can also be satisfied based on the trading volume and the anticipated widely-held ownership of the Company’s shares, but no assurance can be given that this will remain so in the future, since continued compliance with this rule is subject to factors outside the Company’s control.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	17. Commitments and Contingencies • From time to time the Company expects to be subject to legal proceedings and claims in the ordinary course of its business, principally relating to personal injury and property casualty claims. Such claims, even if lacking merit, could result in the expenditure of significant financial and managerial resources. Currently, the Company is not aware of any such claims or contingent liabilities, which should be disclosed, or for which a provision should be established in the accompanying consolidated financial statements. • The Company has guaranteed to the respective banks the performance of the loan agreements entered into by Spacegas Inc., Financial Power Inc. and MGC Agressive Holdings Inc. (Note 7). The vessels owned by these entities have been provided as collateral to secure these loan agreements. Total outstanding loan balances and accrued interest of Spacegas Inc., Financial Power Inc. and MGC Agressive Holdings Inc. as of December 31, 2023 amounted to $34,000,000 and $524,262, respectively. The Company assigns a remote possibility of default to the abovementioned loan agreements and hence has not established any provisions for losses relating to this matter. With regards to the guarantee provided for the loan agreement entered into by MGC Agressive Holdings Inc., the joint venture party owning 49% equity interest in MGC Agressive Holdings Inc. has provided a counter guarantee to the Company amounting to 49% of the outstanding loan balances of MGC Agressive Holdings Inc. Total outstanding loan balances and accrued interest of MGC Agressive Holdings Inc. as of December 31, 2023 amounted to $27,000,000 and $483,671, respectively. • Future minimum contractual charter revenues, gross of commissions, based on vessels committed to non-cancellable,

Leases - The Company as Lessee

Leases - The Company as Lessee	12 Months Ended
	Dec. 31, 2023
Time charterin contracts [Abstract]
Leases - The Company as Lessee	18. Leases – The Company as Lessee Office lease In an Company entered into a new agreement to lease office space from a related party for a 2-year period at an amount of right-of-use-assets right-of-use-assets Lease Disclosures Under ASC 842 Operating lease right-of-use Description Location in balance sheet December 31, 2022 December 31, 2023 Non current assets: Office leases Operating lease right-of-use —  $ 99,379 —  $ 99,379 Liabilities: Office leases Current portion of operating lease liabilities —  $ 71,173 Lease liabilities – current portion —  $ 71,173 Office leases Non-Current portion of operating lease liabilities —  $ 28,206 Lease liabilities – non-current portion —  $ 28,206 The Operating lease right-of-use The table below presents the components of the Company’s lease expenses: Description Location in statement of operations 2021 2022 2023 Lease expense for office leases General and administrative expenses 97,726 88,326 104,167 The cash paid for operating leases with terms greater than 12 months for the years ended December 31, 2021, 2022 and 2023 amounted to $97,726, $88,326 and $104,167, respectively. The table below provides the total amount of lease payments on an undiscounted basis on our office lease greater than 12 months as of December 31, 2023: Year Office leases Total Operating leases Discount rate 5.6 % 5.6 % 2023 (undiscounted lease payments) $ 107,520 $ 107,520 Present value of lease liability 99,379 99,379 Lease liabilities - short term 71,173 71,173 Lease liabilities - long term 28,206 28,206 Total lease liabilities 99,379 99,379 Discount based on incremental borrowing rate (Difference between undiscounted lease payments and present value of lease liability) $ 8,141 $ 8,141

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2023
Subsequent Events [Abstract]
Subsequent Events	19. Subsequent Events In February 2024, the Company prepaid $29.3 million of the term loan dated August 2021 (Note 9) using cash on hand and the related mortgages on the vessels Gas Elixir, Eco Nical, Eco Dominator, Gas Myth and Gas Cerberus were released. Following 7 1.0 On April 23, 2024, the Company granted 525,247 50 50 On April 23, 2024, the Company granted options to acquire up to 123,000 shares of common stock under the Plan to the Company’s CEO non-executive members of Board of Directors of the Company and employees of the Manager. 50 50

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation:
Use of Estimates	Use of Estimates:
Other Comprehensive (Loss)/income	Other Comprehensive Income/(loss):
Foreign Currency Translation	Foreign Currency Translation:
Cash and Cash Equivalents	Cash and Cash Equivalents:
Short-term Investments	Short-term Investments: non-current
Restricted Cash	Restricted Cash: non-current
Trade Receivables	Trade Receivables: un-collectible for doubtful accounts was required for the years ended December 31, 2021 and 2022. For the year ended December 31, 2023 a provision of $0.3 million was recorded.
Claims Receivable	Claims Receivable:
Inventories	Inventories: first-in, first-out
Vessels, net	Vessels, net: itial repairs, improvements, acquisition and expenditures made to prepare the vessel for its initial voyage). Subsequent expenditures for conversions and
Impairment of Vessels	Impairment of Vessels: 360-10, 360-10”), dry-docking Undiscounted cash flows are determined by considering the revenues from existing charters for those vessels that are employed on time charters and when there is no charter in place the estimates based on historical average rates. An impairment loss was identified and recorded for the years ended December 31, 2021, 2022 and 2023 (Note 6).
Vessels' Depreciation	Vessels’ Depreciation:
Assets Held for Sale	Assets Held for Sale: 360-10,
Segment Reporting	Segment Reporting:
Accounting for Special Survey and Dry-docking Costs	Accounting for Special Survey and Dry-docking dry-docking
Deferred Finance Charges	Deferred Finance Charges: non-current
Accounting for Revenue and Related Expenses	Accounting for Revenue and Related Expenses: A time charter is a contract for the use of a vessel for a specific period of time and a specified daily charter hire rate. A time charter generally provides typical warranties and owner protective restrictions. The performance obligations in a time charter are satisfied over the term of the contract beginning when the vessel is delivered to the charterer until it is redelivered back to the owner of the vessel. Some of the Company’s time charters may also contain profit sharing provisions, under which the Company can realize additional revenues in the event that spot rates are higher than the base rates in these time charters. A bareboat charter is a contract in which the vessel owner provides the vessel to the charterer for a fixed period of time at a specified daily rate, which is generally payable in advance, and the charterer generally assumes all risk and costs of operation during the bareboat charter period. The Company’s time charter and bareboat contracts are classified as operating leases pursuant to Accounting Standards Codification (“ASC”) 842 – Leases, because (i) the vessel is an identifiable asset (ii) the owner of the vessel does not have substantive substitution rights and (iii) the charterer has the right to control the use of the vessel during the term of the contract and derives the economic benefits from such use. Time charter and bareboat revenues are recognized when a charter agreement exists, the vessel is made available to the charterer and collection of the related revenue is reasonably assured. Time charter and bareboat charter revenues are recognized as earned on a straight-line basis over the term of the charter as service is provided. Revenues from profit sharing arrangements in time charters are recognized in the period earned. Under time and bareboat charter agreements, all voyages expenses, except commissions are assumed by the charterer, while under bareboat charter agreements, the charterer also assumes responsibility for all vessel operating expenses, dry-docking The Company, elected to make use of a practical expedient for lessors, not to separate the lease and non-lease non-lease non-lease A voyage charter is a contract, in which the vessel owner undertakes to transport a specific amount and type of cargo on a load port-to-discharge lay-time Deferred income represents cash received for undelivered performance obligations and deferred revenue resulting from straight-line revenue recognition in respect of charter agreements that provide for varying charter rates. The portion of the deferred revenue that will be earned within the next twelve months is classified as current liability and the remaining as long-term liability. Vessel voyage expenses are direct expenses to voyage revenues and primarily consist of brokerage commissions, port expenses, canal dues and bunkers. Brokerage commissions are paid to shipbrokers for their time and efforts for negotiating and arranging charter party agreements on behalf of the Company and expensed over the related charter period and all the other voyage expenses are expensed as incurred except for expenses during the ballast portion of the voyage. Any expenses incurred during the ballast portion of a voyage (period between the contract date and the date of the vessel’s arrival to the load port) such as bunker expenses, canal tolls and port expenses are deferred and are recognized on a straight-line basis, in voyage expenses, over the voyage duration as the Company satisfies the performance obligations under the contract provided these costs are (1) incurred to fulfill a contract that the Company can specifically identify, (2) able to generate or enhance resources of the company that will be used to satisfy performance of the terms of the contract, and (3) expected to be recovered from the charterer. These costs are considered ‘contract fulfillment costs’ and are included in ‘other current assets’ in the accompanying consolidated balance sheets. Vessel operating expenses comprise all expenses relating to the operation of the vessel, including crewing, repairs and maintenance, insurance, stores, lubricants and other operating expenses. Vessel operating expenses are expensed as incurred.
Equity Compensation Plan	Equity Compensation Plan: non-vested non-employee non-vested
Stock repurchases	Stock repurchases :
Earnings/(Loss) per Share	Earnings/(Loss) per Share: two-class
Derivatives	Derivatives (i) Hedge Accounting Contracts which meet the strict criteria for hedge accounting are accounted for as cash flow hedges. A cash flow hedge is a hedge of the exposure to variability in cash flows that is attributable to a particular risk associated with a recognized asset or liability, or a highly probable forecasted transaction that could affect profit or loss. The effective portion of the gain or loss on the hedging instrument is recognized directly as a component of “Accumulated other comprehensive income” in equity, while the ineffective portion, if any, is recognized immediately in current period earnings within “Interest and finance costs”. The Company discontinues cash flow hedge accounting if the hedging instrument expires and it no longer meets the criteria for hedge accounting or designation is revoked by the Company. At that time, any cumulative gain or loss on the hedging instrument recognized in equity is kept in equity until the forecasted transaction occurs. When the forecasted transaction occurs, any cumulative gain or loss on the hedging instrument is recognized in the statement of income within “Interest and finance costs”. If a hedged transaction is no longer expected to occur, the net cumulative gain or loss recognized in equity is transferred to net profit or loss for the year within “Interest and finance costs”. (ii) Other Derivatives
Investments in joint ventures	Investments in joint ventures: h invest
Leases – The Company as a Lessee	Leases – The Company as a Lessee: Right-of-use The Company elected the practical expedient of ASC 842 that allowed for time charter-in right-of-use right-of-use liabilities in the consolidated balance sheet for time charter-in lease
Recent Accounting Pronouncements	Recent Accounting Pronouncements:

Basis of Presentation and Gen_2

Basis of Presentation and General Information (Tables)	12 Months Ended
	Dec. 31, 2023
Text Block [Abstract]
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	During 2021, 2022 and 2023, the following charterers accounted for 10% or more of the Company’s revenues. Year ended December 31, Charterer 2021 2022 2023 A —  16 % 20 % B —  —  14 %
Distribution of Assets, Liabilities and Stockholders' Equity [Text Block]	The assets and liabilities of Imperial on December 3, 2021, were as follows: December 3, 2021 Cash, including restricted cash 4,704,521 Trade and other receivables 2,488,560 Inventories 270,489 Advances and prepayments 244,725 Vessels, net (after impairment of $40,185,873) 80,500,000 Trade accounts payable (1,618,146 ) Accrued and other liabilities (312,642 ) Deferred income (943,404 ) Customer deposits (368,000 ) Debt (27,804,000 ) Net assets of Imperial distributed to stockholders 57,162,103

Transactions with Related Par_2

Transactions with Related Parties (Tables)	12 Months Ended
	Dec. 31, 2023
Related Party Transactions [Abstract]
Summary of Charged By Our Related Parties	The amounts charged by the Company’s related parties comprised the following: Year ended December 31, Location in statement of operations 2021 2022 2023 Management fees Management fees – related party 5,831,900 5,242,990 4,531,920 Brokerage commissions Voyage expenses – related party 1,867,100 1,871,071 1,779,488 Superintendent fees Vessels’ operating expenses – related party 117,000 120,000 110,500 Crew management fees Vessels’ operating expenses – related party 948,750 915,450 800,750 Commissions – vessels sold Net loss/(gain) on sale of vessels 81,000 120,250 728,150 Commissions – assets held for sale Impairment loss 125,000 108,000 353,400 Executive compensation General and administrative expenses 1,028,386 924,503 970,382 Rental expense General and administrative expenses 97,726 88,326 104,167

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2023
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: December 31, 2022 2023 Bunkers 1,386,265 746,147 Lubricants 1,677,746 1,233,536 Total 3,064,011 1,979,683

Advances for Vessels' Acquisi_2

Advances for Vessels' Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Summary of Advances for Vessels' Acquisitions	For the years ended December 31, 2022 and 2023, the movement of the account, advances for vessels’ acquisitions was as follows: Balance, December 31, 202 1 —  Advances for vessels’ acquisitions 23,400,000 Balance, December 31, 2022 23,400,000 Other capitalized expenses 14,570 Balance, December 31, 2023 23,414,570

Vessels, net (Tables)

Vessels, net (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Summary of Vessels, Net	The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: Vessel cost Accumulated Depreciation Net Book Value Balance, December 31, 2021 872,676,077 (191,338,924 ) 681,337,153 Additions 748,848 —  748,848 Impairment loss (22,779,899 ) 19,612,865 (3,167,034 ) Disposals (12,046,017 ) —  (12,046,017 ) Transfer to Assets held for sale (10,579,596 ) —  (10,579,596 ) Depreciation for the year —  (27,814,901 ) (27,814,901 ) Balance, December 31, 2022 828,019,413 (199,540,960 ) 628,478,453 Additions —  —  —  Impairment loss (15,722,992 ) 12,906,119 (2,816,873 ) Disposals (78,933,759 ) 15,908,259 (63,025,500 ) Transfer to Assets held for sale (34,633,200 ) —  (34,633,200 ) Depreciation for the year —  (23,707,797 ) (23,707,797 ) Balance, December 31, 2023 698,729,462 (194,434,379 ) 504,295,083

Investments in Joint Ventures (

Investments in Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Entity Joint Ventures	Details of each of the Company’s joint ventures at December 31, 2022 and 2023 are as follows: Proportion of ownership interest held by Name of joint venture Principal activity December 31, 2022 December 31, 2023 Spacegas Inc. Ownership and operation of the vessel “Gas Defiance” 50.1 % 50.1 % Financial Power Inc. Ownership and operation of the vessel “Gas Shuriken” 50.1 % 50.1 % Cannes View Inc Ownership and operation of the vessel “Gas Haralambos” 50.1 % 50.1 % Colorado Oil and Gas Inc. Ownership and operation of the vessel “Eco Lucidity” 50.1 % 50.1 % Frost Investments Corp. Inc. Ownership and operation of the vessel “Eco Nebula” 1 50.1 % 50.1 % MGC Agressive Holdings Inc. Ownership and operation of the vessels “Eco Evoluzione”* 2 3 4 51.0 % 51.0 % 1 The vessel Eco Nebula was sold to an unrelated party on August 9, 2022 2 The vessel Eco Evoluzione was sold to an unrelated party on March 29, 2023 3 The vessel Gaschem Bremen was renamed Eco Ethereal on April 18, 2023 4 The vessel Eco Sorcerer was delivered to the fleet on October 6, 2023
Schedule of Equity Investment Activity	Below is a table of equity investment activity: Year Ended December 31, 2022 2023 Beginning balance $ 53,323,032 $ 46,632,720 Dividends received (17,552,999 ) (19,278,000 ) Equity earnings 10,862,687 12,316,883 Investments in joint ventures $ 46,632,720 $ 39,671,603

Accrued and Other Liabilities (

Accrued and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2023
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: December 31, 2022 2023 Interest on long-term debt 3,540,755 2,093,401 Administrative expenses 177,551 145,418 Vessel operating and voyage expenses 2,065,686 3,442,325 Proceeds from sale of vessel collected in advance 1,140,000 —  Total 6,923,992 5,681,144

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Schedule of Debt	Term Loans Issue Date/ Refinancing Date Maturity Date Drawn Amount December 31, 2022 December 31, 2023 January 2021 January 2026 25,000,000 19,645,000 —  January 2021 January 2028 43,800,000 30,893,547 —  May 2016 December 2025 65,650,000 44,635,980 21,234,160 March 2017 April 2026 70,787,500 47,399,991 42,343,739 April 2020 February 2027 34,450,000 30,884,026 —  August 2021 August 2026 60,000,000 50,304,660 29,260,092 December 2021 January 2028 59,400,000 55,224,000 31,279,000 Total 278,987,204 124,116,991 Current portion of long-term debt 30,666,756 16,863,076 Long-term debt 248,320,448 107,253,915 Total debt 278,987,204 124,116,991 Current portion of deferred finance charges 582,950 238,603 Deferred finance charges non-current 1,291,625 335,740 Total deferred finance charges 1,874,575 574,343 Total debt 278,987,204 124,116,991 Less: Total deferred finance charges 1,874,575 574,343 Total debt, net of deferred finance charges 277,112,629 123,542,648 Less: Current portion of long-term debt, net of current portion of deferred finance charges 30,083,806 16,624,473 Long-term debt 247,028,823 106,918,176
Schedule of Maturities of Long-term Debt	The annual principal payments to be made, for the abovementioned loans, after December 31, 2023, are as follows: December 31, Amount 2024 16,863,076 2025 33,952,596 2026 54,058,319 2027 4,012,000 Thereafter 15,231,000 Total 124,116,991

Derivatives and Fair Value Di_2

Derivatives and Fair Value Disclosures (Tables)	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Schedule of Derivative Instruments	The following table presents information relating to the Company’s interest rate swap arrangements as of December 31, 2022 and 2023. Effective date Termination Fixed Floating Rate Fair Value December 31, Notional Amount December 31, Fair Value December 31, Notional Amount December 31, Swap 1 August 16, 2017 June 21, 2023 2.12 % $ 536,901 $ 10,664,750 —   —   Swap 2 April 10, 2018 December 11, 2.74 % $ 955,139 $ 23,308,000 $ 731,814 $ 21,236,000 Swap 3 February 16, 2019 June 21, 2023 2.89 % $ 256,813 $ 10,664,750 —   —   Swap 4 January 21, 2021 June 13, 2023 0.73 % $ 1,398,984 $ 11,866,750 —   —   Swap 5 January 21, 2021 March 31, 0.73 % $ 1,393,330 $ 11,829,250 —   —   Swap 6 January 21, 2021 March 31, 0.74 % $ 864,286 $ 7,197,547 —   —   Swap 7 February 5, 2022 June 30, 2026 1.49 % $ 1,697,402 $ 25,152,330 $ 1,126,863 $ 21,274,194 Total $ 7,102,855 $ 100,683,377 $ 1,858,677 $ 42,510,194
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	Tabular disclosure of financial instruments is as follows: December 31, 2022 2023 Derivatives designated as hedging instruments Balance Sheet Location Asset Derivatives Liability Derivatives Asset Derivatives Liability Derivatives Interest Rate Swap Agreements Non current assets — Fair value of derivatives 5,405,453 —  731,814 —  Total derivatives designated as hedging instruments 5,405,453 —  731,814 —  December 31, 2022 2023 Derivatives not designated as hedging instruments Balance Sheet Location Asset Derivatives Liability Derivatives Asset Derivatives Liability Derivatives Interest Rate Swap Agreements Non current assets — Fair value of derivatives 1,697,402 —  1,126,863 —  Total derivatives not designated as hedging instruments 1,697,402 —  1,126,863 —
Schedule of Derivative Instruments, Gain (Loss)	The effect of derivative instruments on the consolidated statements of operations for the years ended December 31, 2021, 2022 and 2023 is as follows: Location of Gain/(Loss) Year Ended December 31, Derivatives not designated as hedging instruments Recognized 2021 2022 2023 Interest Rate Swap — Reclassification from OCI Gain on derivatives 265,610 —  —  Interest Rate Swap — Change in Fair Value Gain on derivatives —  1,697,401 (570,539 ) Interest Rate Swap — Realized (expense)/income Gain on (25,457 ) 1,061 808,157 Total gain on derivatives 240,153 1,698,462 237,618 Location of (Loss)/Gain Year Ended December 31, Derivatives designated as hedging instruments Recognized 2021 2022 2023 Interest Rate Swap — Realized (expense)/income Interest and finance costs (2,183,187 ) (126,241 ) 4,771,235 Total loss on derivatives (2,183,187 ) (126,241 ) 4,771,235
Schedule of Accumulated Other Comprehensive Income	The components of accumulated other comprehensive income included in the accompanying consolidated balance sheets consist of unrealized gain / (loss) on cash flow hedges relating to the Company’s interest rate swap contracts and are analyzed as follows: Unrealized Balance, January 1, 2021 (4,952,823 ) Other comprehensive loss before reclassifications (68,699 ) Amounts reclassified from accumulated other comprehensive loss relating to qualifying hedges 2,183,187 Other reclassification adjustments (265,610 ) Balance, December 31, 2021 (3,103,945 ) Other comprehensive income before reclassifications 8,164,187 Amounts reclassified from accumulated other comprehensive loss relating to qualifying hedges 126,241 Balance, December 31, 2022 5,186,483 Other comprehensive income 316,566 Amounts reclassified from accumulated other comprehensive income relating to qualifying hedges (4,771,235 ) Balance, December 31, 2023 731,814
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents the fair values for assets and liabilities measured on a recurring basis categorized into a Level based upon the lowest level of significant input to the valuations as of December 31, 2022: Fair Value Measurements Using Description Fair Value as of 2022 Quoted Prices in Active Significant Significant (Level 3) Assets: Interest Rate Swap Agreements 7,102,855 —  7,102,855 —  Total 7,102,855 —  7,102,855 —  The following table presents the fair values for assets and liabilities measured on a recurring basis categorized into a Level based upon the lowest level of significant input to the valuations as of December 31, 2023: Fair Value Measurements Using Description Fair Value as of 2023 Quoted Prices in Active Significant Significant (Level 3) Assets: Interest Rate Swap Agreements 1,858,677 —  1,858,677 —  Total 1,858,677 —  1,858,677 —
Schedule of Fair Value, Assets and Liabilities Measured on Non-Recurring Basis	The following tables present the fair values for assets measured on a non-recurring Fair Value Measurements Using Description Fair Value as of Quoted Prices Significant Other Significant Impairment Long-lived assets held and used 2,375,000 —  2,375,000 —  (529,532 ) Total 2,375,000 —  2,375,000 —  (529,532 ) Fair Value Measurements Using Description Fair Value as of Quoted Prices (Level 1) Significant Significant (Level 3) Impairment Long-lived assets held for sale 10,800,000 —  10,800,000 —  (2,591,924 ) Long-lived assets held and used 2,100,000 2,100,000 (45,578 ) Total 12,900,000 —  12,900,000 —  (2,637,502 ) Fair Value Measurements Using Description Fair Value as of Quoted Prices Significant Significant Impairment Long-lived assets held for sale 35,340,000 —  35,340,000 —  (2,759,553 ) Total 35,340,000 —  35,340,000 —  (2,759,553 )

Equity Compensation Plan (Table

Equity Compensation Plan (Tables)	12 Months Ended
	Dec. 31, 2023
Share-based Payment Arrangement [Abstract]
Summary of Nonvested Restricted Shares	A summary of the status of the Company’s non-vested Number of Weighted average non-vested Non-vested, —   —   Granted 343,744 2.99 Non-vested, 343,744 2.99 Vested (171,872 ) 2.99 Non-vested, 171,872 2.99 Granted 1,566,000 4.83 Vested (620,872 ) 3.08 Non-vested, 1,117,000 5.52
Summary of the Company's non-vested stock option activity	A summary of the Company’s non-vested Option Weighted- Exercise Outstanding – January 1, 2021 —  —  Granted 250,000 2.99 Exercised —  —  Outstanding – December 31, 2021 250,000 2.99 Exercisable – December 31, 2021 —  —  Granted —  —  Exercised —  —  Outstanding – December 31, 2022 250,000 2.99 Exercisable – December 31, 2022 —  —  Granted 250,000 2.85 Granted 299,000 6.43 Exercised (250,000 ) 2.99 Outstanding – December 31, 2023 549,000 4.80 Exercisable – December 31, 2023 —  —

Earnings_(loss) per share (Tabl

Earnings/(loss) per share (Tables)	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Basic and Diluted Earnings Per Share Calculation	The Company calculates basic and diluted earnings per share as follows: Year Ended December 31, 2021 2022 2023 Numerator Net (loss)/income (35,123,208 ) 34,253,365 51,936,829 Less: Undistributed earnings allocated to non-vested —  216,168 813,111 Net income/(loss) attributable to common shareholders, basic (35,123,208 ) 34,037,197 51,123,689 Denominator Weighted average number of shares outstanding, basic 37,858,437 37,961,560 37,166,449 Weighted average number of shares outstanding, diluted 37,858,437 37,961,673 37,236,951 (Loss)/Earnings per share, basic (0.93 ) 0.90 1.38 (Loss)/Earnings per share, diluted (0.93 ) 0.90 1.37

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Summary of Analysis of Consolidated Statements of Operations	The amounts in the accompanying consolidated statements of operations are analyzed as follows: Year ended December 31, 2021 2022 2023 Time charter revenues 105,966,167 114,996,842 124,075,851 Bareboat revenues 9,624,684 2,340,791 —  Voyage charter revenues 33,813,496 32,156,474 18,268,798 Other income 800,180 3,266,781 1,183,120 Total 150,204,527 152,760,888 143,527,769

Vessel Operating Expenses (Tabl

Vessel Operating Expenses (Tables)	12 Months Ended
	Dec. 31, 2023
Text Block [Abstract]
Vessel Operating Expenses	The amounts in the accompanying consolidated statements of operations are analyzed as follows: Year ended December 31, Vessels’ Operating Expenses 2021 2022 2023 Crew wages and related costs 38,454,397 34,721,673 32,676,466 Insurance 2,196,444 2,382,340 1,939,328 Repairs and maintenance 7,282,481 5,716,570 5,480,702 Spares and consumable stores 9,123,975 8,127,376 8,048,657 Miscellaneous expenses 4,452,266 3,996,819 4,972,345 Total 61,509,563 54,944,778 53,117,498

Leases - The Company as Lessee

Leases - The Company as Lessee (Tables)	12 Months Ended
	Dec. 31, 2023
Time charterin contracts [Abstract]
Schedule of operating leases	Operating lease right-of-use Description Location in balance sheet December 31, 2022 December 31, 2023 Non current assets: Office leases Operating lease right-of-use —  $ 99,379 —  $ 99,379 Liabilities: Office leases Current portion of operating lease liabilities —  $ 71,173 Lease liabilities – current portion —  $ 71,173 Office leases Non-Current portion of operating lease liabilities —  $ 28,206 Lease liabilities – non-current portion —  $ 28,206
Schedule of company's lease expenses	The table below presents the components of the Company’s lease expenses: Description Location in statement of operations 2021 2022 2023 Lease expense for office leases General and administrative expenses 97,726 88,326 104,167
Schedule of total amount of lease payments on an undiscounted basis	The table below provides the total amount of lease payments on an undiscounted basis on our office lease greater than 12 months as of December 31, 2023: Year Office leases Total Operating leases Discount rate 5.6 % 5.6 % 2023 (undiscounted lease payments) $ 107,520 $ 107,520 Present value of lease liability 99,379 99,379 Lease liabilities - short term 71,173 71,173 Lease liabilities - long term 28,206 28,206 Total lease liabilities 99,379 99,379 Discount based on incremental borrowing rate (Difference between undiscounted lease payments and present value of lease liability) $ 8,141 $ 8,141

Basis of Presentation and Gen_3

Basis of Presentation and General Information - Concentration Risk by Charterer (Detail) - Sales Revenue, Net [Member] - Product Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Charterer A [Member]
Concentration risk, percentage	20%	16%
Charterer B [Member]
Concentration risk, percentage	14%

Basis of Presentation and Gen_4

Basis of Presentation and General Information - Assets Liabilities And Stock holders Equity (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Inventories	$ 1,979,683	$ 3,064,011
Advances and prepayments	1,409,418	681,413
Vessels, net (after impairment of $40,185,873)	504,295,083	628,478,453	$ 681,337,153
Accrued and other liabilities	(5,681,144)	(6,923,992)
Deferred income	$ (1,928,712)	$ (21,451)
Imperial [Member]
Cash, including restricted cash			4,704,521
Trade and other receivables			2,488,560
Inventories			270,489
Advances and prepayments			244,725
Vessels, net (after impairment of $40,185,873)			80,500,000
Trade accounts payable			(1,618,146)
Accrued and other liabilities			(312,642)
Deferred income			(943,404)
Debt			(27,804,000)
Net assets of Imperial distributed to stockholders			57,162,103
Deposits			$ (368,000)

Basis of Presentation and Gen_5

Basis of Presentation and General Information - Assets Liabilities And Stock holders Equity (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2021
Assets Distributed To Stockholders [Abstract]
Property, Plant and Equipment Impairment or Disposal Disclosure	40,185,873

Significant Accounting Polici_3

Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($) Segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts receivable | $	$ 300,000	$ 0	$ 0
Number of reportable segments	1
Number of operating segments	1
LPG [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	30 years

Transactions With Related Par_3

Transactions With Related Parties - Additional Information (Detail) - USD ($)		1 Months Ended	12 Months Ended
	May 18, 2021	Jul. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Management fee, per day, per vessel			$ 280
Due to related parties, current, total			955,567	$ 2,476,663
Proceeds From Unconsolidated Joint Ventures And Subsidiaries Classified As Financing Activities			11,847	4,428,713	$ 0
Related party transaction, purchases from related party		$ 117,000,000
Advances paid for the acquisition of vessels			$ 23,414,570	$ 23,400,000
Other Liability, Current, Related Party, Type [Extensible Enumeration]			Related Party [Member]	Related Party [Member]
Commission fees capitalized to cost of vessels			$ 0	$ 0	$ 300,000
Eco Oracle [Member]
Related Party Transaction [Line Items]
Supervision fees			550,000
Eco Wizard [Member]
Related Party Transaction [Line Items]
Supervision fees			$ 550,000
Joint Venture [Member]
Related Party Transaction [Line Items]
Equity Method Investment Ownership Percentage			50.10%
The Manager [Member]
Related Party Transaction [Line Items]
Management fee, per day, per vessel			$ 440
Management fee, per day, per vessel, under bareboat charter			125
Crew management fee, per month, per vessel			$ 2,500
Sales and purchase broker commission fee, percentage			1%
Due to related parties, current, total			$ 943,720	2,476,663
Proceeds From Unconsolidated Joint Ventures And Subsidiaries Classified As Financing Activities			$ 11,847	$ 0
Other Liability, Current, Related Party, Type [Extensible Enumeration]			Related Party [Member]	Related Party [Member]
The Manager [Member] | Additional Charge Per Day When Visits Exceed Five Days In Twelve Month Period [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party			$ 500
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]			Related Party [Member]
Brave [Member]
Related Party Transaction [Line Items]
Related party transaction, purchases from related party	$ 1,398,675
Option premium	$ 1,950,000
Brave [Member] | Gas Enterprises International Inc [Member]
Related Party Transaction [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	51%

Transactions with Related Par_4

Transactions with Related Parties - Summary of charged by our related parties (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Management Fees [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	$ 4,531,920	$ 5,242,990	$ 5,831,900
Brokerage Commissions [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	1,779,488	1,871,071	1,867,100
Superintendent Fees [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	110,500	120,000	117,000
Crew Management Fees [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	800,750	915,450	948,750
Net Loss/(Gain) on Sale of Vessels [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	728,150	120,250	81,000
Impairment Loss [Member] | Commissions [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	353,400	108,000	125,000
Executive Compensation [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	970,382	924,503	1,028,386
Rental Expense [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	$ 104,167	$ 88,326	$ 97,726

Inventories - Schedule of Inven

Inventories - Schedule of Inventory, Current (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Inventory Disclosure [Abstract]
Bunkers	$ 746,147	$ 1,386,265
Lubricants	1,233,536	1,677,746
Total	$ 1,979,683	$ 3,064,011

Advances for Vessels' Acquisi_3

Advances for Vessels' Acquisitions - Additional Information (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments in and Advances to Affiliates [Line Items]
Advances for vessel under construction and acquisitions	$ 23,414,570	$ 23,400,000	$ 0
Eco Oracle and Eco Wizard [Member]
Investments in and Advances to Affiliates [Line Items]
Advances for vessel under construction and acquisitions		$ 23,400,000

Advances for Vessels' Acquisi_4

Advances for Vessels' Acquisitions - Summary of Advances for Vessels Under Construction and Acquisitions (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Beginning balance	$ 23,400,000	$ 0
Advances for vessels' acquisitions		23,400,000
Other Capitalized Expenses	14,570
Ending balance	$ 23,414,570	$ 23,400,000

Vessels, Net - Summary of Vesse

Vessels, Net - Summary of Vessels, Net (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Vessel cost, Balance	$ 828,019,413	$ 872,676,077
Vessel cost, Additions	0	748,848
Vessel cost, Impairment loss	(15,722,992)	(22,779,899)
Vessel cost, Disposals	(78,933,759)	(12,046,017)
Vessel cost, Transfer to Assets held for sale	(34,633,200)	(10,579,596)
Vessel cost, Balance	698,729,462	828,019,413	$ 872,676,077
Accumulated Depreciation, Balance	(199,540,960)	(191,338,924)
Accumulated Depreciation, Impairment loss	12,906,119	19,612,865
Accumulated Depreciation, Disposals	(15,908,259)
Accumulated Depreciation, Depreciation for the year	(23,707,797)	(27,814,901)
Accumulated Depreciation, Balance	(194,434,379)	(199,540,960)	(191,338,924)
Net Book Value, Balance	628,478,453	681,337,153
Net Book Value, Additions	0	748,848
Net Book Value, Impairment loss	(2,816,873)	(3,167,034)	(44,616,214)
Net Book Value, Disposals	(63,025,500)	(12,046,017)
Net Book Value, Transfer to Assets held for sale	(34,633,200)	(10,579,596)
Net Book Value, Depreciation for the year	(23,707,797)	(27,814,901)	(37,125,903)
Net Book Value, Balance	$ 504,295,083	$ 628,478,453	$ 681,337,153

Vessels, Net - Additional Infor

Vessels, Net - Additional Information (Detail) - USD ($)

1 Months Ended

3 Months Ended

12 Months Ended

Dec. 31, 2022

Mar. 31, 2022

Jun. 30, 2021

Mar. 31, 2022

Dec. 31, 2023

Dec. 31, 2022

Dec. 31, 2021

May 26, 2023

Apr. 26, 2023

Feb. 13, 2023

Dec. 15, 2022

Nov. 24, 2022

Apr. 19, 2022

Feb. 14, 2022

Jul. 28, 2021

May 31, 2021

Property, Plant and Equipment [Line Items]

Impairment of long-lived assets held-for-use

$ 529,532

Selling price

$ 78,933,759

$ 12,046,017

Impairment loss

2,816,873

3,167,034

$ 44,616,214

10 Vessels [Member]

Property, Plant and Equipment [Line Items]

Debt instrument, collateral amount

282,953,442

28 Vessels [Member]

Property, Plant and Equipment [Line Items]

Debt instrument, collateral amount

$ 587,404,711

587,404,711

Impairment Loss [Member]

Property, Plant and Equipment [Line Items]

Impairment of long-lived assets held-for-use

$ 529,532

$ 1,971,148

1,333,950

Eco Loyalty [Member]

Property, Plant and Equipment [Line Items]

Disposal group, including discontinued operation, consideration

$ 12,500,000

Impairment of long-lived assets held-for-use

1,125,243

Gain (Loss) on Disposition of Assets

27,496

Eco Loyalty [Member] | Accrued and Other Liabilities [Member]

Property, Plant and Equipment [Line Items]

Selling price

1,140,000

Gas Imperiale [Member]

Property, Plant and Equipment [Line Items]

Disposal group, including discontinued operation, consideration

$ 9,650,000

$ 8,100,000

Gain (Loss) on Disposition of Assets

345,278

$ 304,210

Gas Monarch [Member]

Property, Plant and Equipment [Line Items]

Disposal group, including discontinued operation, consideration

$ 2,375,000

Impairment of long-lived assets held-for-use

90,855

Gas Prodigy [Member]

Property, Plant and Equipment [Line Items]

Disposal group, including discontinued operation, consideration

$ 5,100,000

Impairment of long-lived assets held-for-use

2,026,333

Selling price

5,100,000

Selling expense

170,093

Gas Spirit [Member]

Property, Plant and Equipment [Line Items]

Disposal group, including discontinued operation, consideration

$ 5,700,000

Impairment of long-lived assets held-for-use

565,591

Selling price

5,700,000

Selling expense

50,311

Gas Spirit [Member] | Net Loss Gain on Sale of Vessels [Member]

Property, Plant and Equipment [Line Items]

Gain (Loss) on Disposition of Assets

23,354

Gas Galaxy [Member]

Property, Plant and Equipment [Line Items]

Impairment charge

45,578

57,240

Disposal group, including discontinued operation, consideration

$ 2,100,000

Assets Held-for-sale, Not Part of Disposal Group, Current

2,100,000

2,100,000

Eco Texiana Eco Enigma Eco Czar Eco Nemesis [Member] | Related Party [Member]

Property, Plant and Equipment [Line Items]

Due from related parties

$ 70,715,000

Eco Nemesis [Member]

Property, Plant and Equipment [Line Items]

Gain (Loss) on Disposition of Assets

7,669,135

Eco Dream Eco Green [Member] | Related Party [Member]

Property, Plant and Equipment [Line Items]

Due from related parties

$ 35,340,000

Eco Green and Eco Dream [Member]

Property, Plant and Equipment [Line Items]

Selling price

35,340,000

Selling expense

706,800

Assets held-for-sale that are not part of a disposal group

246,725

Impairment loss

$ 2,759,553

Gas Prodigy and Gas Spirit [Member]

Property, Plant and Equipment [Line Items]

Assets held-for-sale that are not part of a disposal group

$ 527,586

$ 527,586

Investments in Joint Ventures -

Investments in Joint Ventures - Additional Information (Detail) - USD ($)		12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Nov. 08, 2023
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Aggregate Cost	$ 1,930,000	$ 1,930,000	$ 1,950,000
Property, plant and equipment, disposals		$ 78,933,759	$ 12,046,017
Eco Ethereal [Member]
Schedule of Equity Method Investments [Line Items]
Property, plant and equipment, disposals	$ 43,000,000
Deposit received by joint venture				20%

Investments in Joint Ventures_2

Investments in Joint Ventures - Schedule of Entity Joint Ventures (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Spacegas Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Principal activity	Ownership and operation of the vessel “Gas Defiance”
Equity Method Investment, Ownership Percentage	50.10%	50.10%
Financial Power Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Principal activity	Ownership and operation of the vessel “Gas Shuriken”
Equity Method Investment, Ownership Percentage	50.10%	50.10%
Cannes View Inc [Member]
Schedule of Equity Method Investments [Line Items]
Principal activity	Ownership and operation of the vessel “Gas Haralambos”
Equity Method Investment, Ownership Percentage	50.10%	50.10%
Colorado Oil and Gas Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Principal activity	Ownership and operation of the vessel “Eco Lucidity”
Equity Method Investment, Ownership Percentage	50.10%	50.10%
Frost Investments Corp Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Principal activity	Ownership and operation of the vessel “Eco Nebula”
Equity Method Investment, Ownership Percentage	50.10%	50.10%
MGC Agressive Holdings Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Principal activity	Ownership and operation of the vessels “Eco Evoluzione” and “Eco Etheral” and “Eco Sorcerer”
Equity Method Investment, Ownership Percentage	51%	51%

Investments in Joint Ventures_3

Investments in Joint Ventures - Schedule of Equity Investment Activity (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]
Beginning balance	$ 46,632,720	$ 53,323,032
Dividends received	(19,278,000)	(17,552,999)
Equity earnings	12,316,883	10,862,687	$ 8,326,701
Investments in joint ventures	$ 39,671,603	$ 46,632,720	$ 53,323,032

Accrued and Other Liabilities -

Accrued and Other Liabilities - Schedule of Accrued Liabilities (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Accrued Liabilities [Abstract]
Interest on long-term debt	$ 2,093,401	$ 3,540,755
Administrative expenses	145,418	177,551
Vessel operating and voyage expenses	3,442,325	2,065,686
Proceeds from sale of vessel collected in advance		1,140,000
Total	$ 5,681,144	$ 6,923,992

Long-term Debt - Schedule of De

Long-term Debt - Schedule of Debt (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Drawn Amount		$ 70,000,000		$ 59,400,000
Term Loans	$ 124,116,991		$ 278,987,204
Current portion of long-term debt associated with vessel held for sale	238,603		582,950
Current portion of deferred finance charges associated with vessels held for sale	16,863,076		30,666,756
Long term debt	107,253,915		248,320,448
Total debt	124,116,991		278,987,204
Deferred finance charges non-current	335,740		1,291,625
Total deferred finance charges	574,343		1,874,575
Total debt, net of deferred finance charges	123,542,648		277,112,629
Less: Current portion of long-term debt, net of current portion of deferred finance charges	16,624,473		30,083,806
Long-term debt	$ 106,918,176		247,028,823
Term Loan 1 [Member]
Debt Instrument [Line Items]
Maturity Date	Jan. 31, 2026
Drawn Amount	$ 25,000,000
Term Loans	$ 0		19,645,000
Term Loan 2 [Member]
Debt Instrument [Line Items]
Maturity Date	Jan. 31, 2028
Drawn Amount	$ 43,800,000
Term Loans	$ 0		30,893,547
Term Loan 3 [Member]
Debt Instrument [Line Items]
Maturity Date	Dec. 31, 2025
Drawn Amount	$ 65,650,000
Term Loans	$ 21,234,160		44,635,980
Term Loan 4 [Member]
Debt Instrument [Line Items]
Maturity Date	Apr. 30, 2026
Drawn Amount	$ 70,787,500
Term Loans	$ 42,343,739		47,399,991
Term Loan 5 [Member]
Debt Instrument [Line Items]
Maturity Date	Feb. 28, 2027
Drawn Amount	$ 34,450,000
Term Loans	$ 0		30,884,026
Term Loan 6 [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 31, 2026
Drawn Amount	$ 60,000,000
Term Loans	$ 29,260,092		50,304,660
Term Loan 7 [Member]
Debt Instrument [Line Items]
Maturity Date	Jan. 31, 2028
Drawn Amount	$ 59,400,000
Term Loans	$ 31,279,000		$ 55,224,000

Long-term Debt - Additional Inf

Long-term Debt - Additional Information (Detail)

1 Months Ended

12 Months Ended

Dec. 31, 2023 USD ($)

Aug. 02, 2023

Jul. 01, 2023 USD ($)

Jun. 01, 2023 USD ($)

May 01, 2023 USD ($)

Mar. 01, 2023 USD ($)

Feb. 02, 2023

Jan. 01, 2023

Feb. 28, 2023 USD ($)

Jan. 31, 2022 USD ($)

Dec. 31, 2023 USD ($) DerivativeInstrument

Dec. 31, 2022 USD ($)

Dec. 31, 2021 USD ($)

Mar. 31, 2023 USD ($)

Debt Instrument [Line Items]

Restricted cash

$ 659,137

$ 659,137

$ 2,519,601

$ 2,198,775

Repayments of debt

20,300,000

$ 18,200,000

$ 29,700,000

154,870,215

83,579,825

173,012,428

Term loan financial covenants, cash requirement

$ 5,893,721

5,893,721

Amortization of debt issuance costs

$ 1,345,940

$ 855,472

$ 1,157,804

Debt,weighted average interest rate

7.07%

7.07%

4.20%

2.88%

Interest expense, debt, total

$ 13,250,267

$ 11,446,312

$ 8,684,097

Interest costs capitalized

$ 0

$ 0

20,060

Drawn Amount

59,400,000

$ 70,000,000

Outstanding Balance Of Loan

$ 44,666,018

Debt instrument Payment terms

24

Description of debt instrument

December 2025

January 2026

Proceeds from Related Party Debt

$ 2,000,000

$ 3,900,000

Debt instrument, repaid, principal

23,000,000

Term loan financial covenants cash balance

$ 10,000,000

$ 10,000,000

Repayments of Secured Debt

$ 6,200,000

Interest Rate Swap 4 [Member]

Debt Instrument [Line Items]

Proceeds from Related Party Debt

$ 1,200,000

Interest Rate Swap 1 [Member]

Debt Instrument [Line Items]

Proceeds from Related Party Debt

700,000

Interest Rate Swap 3 [Member]

Debt Instrument [Line Items]

Proceeds from Related Party Debt

$ 700,000

Term Loan [Member]

Debt Instrument [Line Items]

Repayments of debt

$ 8,700,000

$ 5,900,000

Description of debt instrument

August 2026

Eco Corsair Eco Royalty Eco Elysium [Member]

Debt Instrument [Line Items]

Description of debt instrument

January 2028

Eco Alice Eco Blizzard [Member]

Debt Instrument [Line Items]

Repayments of debt

$ 29,900,000

Description of debt instrument

February 2027

Eco Enigma Eco Texiana [Member]

Debt Instrument [Line Items]

Repayments of debt

$ 19,200,000

Description of debt instrument

January 2028

Maximum [Member]

Debt Instrument [Line Items]

Value to term loan ratio

135%

Percentage of total debt to total market value adjusted assets

80%

Percentage of dividends paid to free cash flow

50%

Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

2.15%

Minimum [Member]

Debt Instrument [Line Items]

Value to term loan ratio

120%

EBITDA to interest expense ratio | DerivativeInstrument

2.5

Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

1.85%

Long-term Debt - Schedule of Ma

Long-term Debt - Schedule of Maturities of Long-term Debt (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Maturities of Long-term Debt [Abstract]
2024	$ 16,863,076
2025	33,952,596
2026	54,058,319
2027	4,012,000
Thereafter	15,231,000
Total	$ 124,116,991	$ 278,987,204

Derivatives and Fair Value Di_3

Derivatives and Fair Value Disclosures - Additional Information (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 42,510,194	$ 100,683,377
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 42,510,194	$ 100,683,377

Derivatives and Fair Value Di_4

Derivatives and Fair Value Disclosures - Schedule of the Company's interest rate swap arrangements (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Fair Value Asset/(Liability)	$ 1,858,677	$ 7,102,855
Derivative, notional amount	$ 42,510,194	100,683,377
Swap 1
Derivatives, Fair Value [Line Items]
Effective Date	Aug. 16, 2017
Termination Date	Jun. 21, 2023
Fixed Rate (Company Pays)	2.12%
Floating Rate(Company Receives)	3-month U.S.dollar SOFR
Fair Value Asset/(Liability)	$ 0	536,901
Derivative, notional amount	$ 0	10,664,750
Swap 2
Derivatives, Fair Value [Line Items]
Effective Date	Apr. 10, 2018
Termination Date	Dec. 11, 2025
Fixed Rate (Company Pays)	2.74%
Floating Rate(Company Receives)	3-month U.S.dollar SOFR
Fair Value Asset/(Liability)	$ 731,814	955,139
Derivative, notional amount	$ 21,236,000	23,308,000
Swap 3
Derivatives, Fair Value [Line Items]
Effective Date	Feb. 16, 2019
Termination Date	Jun. 21, 2023
Fixed Rate (Company Pays)	2.89%
Floating Rate(Company Receives)	3-month U.S.dollar SOFR
Fair Value Asset/(Liability)	$ 0	256,813
Derivative, notional amount	$ 0	10,664,750
Swap 4
Derivatives, Fair Value [Line Items]
Effective Date	Jan. 21, 2021
Termination Date	Jun. 13, 2023
Fixed Rate (Company Pays)	0.73%
Floating Rate(Company Receives)	3-month U.S.dollar SOFR
Fair Value Asset/(Liability)	$ 0	1,398,984
Derivative, notional amount	$ 0	11,866,750
Swap 5
Derivatives, Fair Value [Line Items]
Effective Date	Jan. 21, 2021
Termination Date	Mar. 31, 2023
Fixed Rate (Company Pays)	0.73%
Floating Rate(Company Receives)	3-month U.S.dollar SOFR
Fair Value Asset/(Liability)	$ 0	1,393,330
Derivative, notional amount	$ 0	11,829,250
Swap 6
Derivatives, Fair Value [Line Items]
Effective Date	Jan. 21, 2021
Termination Date	Mar. 31, 2023
Fixed Rate (Company Pays)	0.74%
Floating Rate(Company Receives)	3-month U.S.dollar SOFR
Fair Value Asset/(Liability)	$ 0	864,286
Derivative, notional amount	$ 0	7,197,547
Swap 7
Derivatives, Fair Value [Line Items]
Effective Date	Feb. 05, 2022
Termination Date	Jun. 30, 2026
Fixed Rate (Company Pays)	1.49%
Floating Rate(Company Receives)	3-month U.S.dollar SOFR
Fair Value Asset/(Liability)	$ 1,126,863	1,697,402
Derivative, notional amount	$ 21,274,194	$ 25,152,330

Derivatives and Fair Value Di_5

Derivatives and Fair Value Disclosures - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Derivative assets non-current	$ 1,858,677	$ 7,102,855
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	731,814	5,405,453
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative assets non-current	731,814	5,405,453
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	1,126,863	1,697,402
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative assets non-current	$ 1,126,863	$ 1,697,402

Derivatives and Fair Value Di_6

Derivatives and Fair Value Disclosures - Schedule of Derivative Instruments, Gain (Loss) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gain on derivatives	$ 237,618	$ 1,698,462	$ 240,153
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total loss on derivatives	4,771,235	(126,241)	(2,183,187)
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Swap — Income (loss) Reclassification from OCI	0		265,610
Interest Rate Swap — Change in Fair Value	(570,539)	1,697,401
Interest Rate Swap — Realized (expense)/income	808,157	1,061	(25,457)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Swap — Realized (expense)/income	$ 4,771,235	$ (126,241)	$ (2,183,187)

Derivatives and Fair Value Di_7

Derivatives and Fair Value Disclosures - Schedule of Accumulated Other Comprehensive Income (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 5,186,483
Ending balance	$ 731,814	$ 5,186,483
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 5,186,483	(3,103,945)	$ (4,952,823)
Other comprehensive income (loss) before reclassifications	316,566	8,164,187	(68,699)
Amounts reclassified from accumulated other comprehensive income (loss) relating to qualifying hedges	(4,771,235)	126,241	2,183,187
Other reclassification adjustments			(265,610)
Ending balance	$ 731,814	$ 5,186,483	$ (3,103,945)

Derivatives and Fair Value Di_8

Derivatives and Fair Value Disclosures - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fail value measurement	$ 1,858,677	$ 7,102,855
Interest Rate Swap 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fail value measurement	1,858,677	7,102,855
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fail value measurement	1,858,677	7,102,855
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fail value measurement	$ 1,858,677	$ 7,102,855

Derivatives and Fair Value Di_9

Derivatives and Fair Value Disclosures - Schedule of Fair Value, Assets and Liabilities Measured on Non-Recurring Basis (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets held and used	$ (529,532)
Total		$ (2,816,873)	$ (3,167,034)	$ (44,616,214)
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets held for sale		35,340,000	10,800,000
Long-lived assets held and used	2,375,000		2,100,000
Total	2,375,000	35,340,000	12,900,000
Long-lived assets held for sale		(2,759,553)	(2,591,924)
Long-lived assets held and used	(529,532)		(45,578)
Total	(529,532)	(2,759,553)	(2,637,502)
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets held for sale		35,340,000	10,800,000
Long-lived assets held and used	2,375,000		2,100,000
Total	$ 2,375,000	$ 35,340,000	$ 12,900,000

Derivatives and Fair Value D_10

Derivatives and Fair Value Disclosures - Additional Information - 2 (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Impairment of long-lived assets held-for-use	$ 529,532
Gas Prodigy and Gas Spirit Vessels [Member]
Derivatives, Fair Value [Line Items]
Long-lived assets held-for-use, fair value disclosure, net		$ 220,404
Impairment of long-lived assets to be disposed of		57,320
Assets held-for-sale, long lived, fair value disclosure		$ 10,800,000
Eco Green [Member]
Derivatives, Fair Value [Line Items]
Long-lived assets held-for-use, fair value disclosure, net			$ 706,800
Assets held-for-sale, long lived, fair value disclosure			35,340,000
Eco Dream [Member]
Derivatives, Fair Value [Line Items]
Long-lived assets held-for-use, fair value disclosure, net			706,800
Assets held-for-sale, long lived, fair value disclosure			$ 35,340,000

Capital Stock, Treasury Stock_2

Capital Stock, Treasury Stock and Additional Paid-in Capital - Additional Information (Detail) - USD ($)	4 Months Ended	12 Months Ended
	Apr. 26, 2024	Dec. 31, 2023	Oct. 31, 2023	May 31, 2023
Class of Stock [Line Items]
Stock repurchased during period, share		3,875,855
Stock Repurchased During Period, Value		$ 19,080,456
Stock repurchase program authorised amount				$ 15,000,000
Stock repurchase program authorised additional amount			$ 10,000,000
Stock repurchase program authorised additional aggregate amount			$ 25,000,000
Subsequent Event [Member]
Class of Stock [Line Items]
Stock repurchased during period, share	51,200

Equity Compensation Plan - Addi

Equity Compensation Plan - Additional Information (Detail) - USD ($)												12 Months Ended
	Dec. 08, 2025	Feb. 21, 2025	Dec. 08, 2024	Apr. 23, 2024	Feb. 21, 2024	Dec. 08, 2023	May 26, 2023	Mar. 24, 2023	Feb. 21, 2023	May 26, 2022	May 26, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Feb. 28, 2024	Aug. 03, 2023	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period								449,000
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value								$ 3.11
Dividends, total												$ 0	$ 0	$ 0
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value												3,599,860	$ 465,773	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding												1.66
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number																250,000
Share-based compensation arrangement by share-based payment award, options, exercisable, intrinsic value																$ 747,500
Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period						299,000			250,000		250,000
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value						$ 3.39			$ 1.47		$ 1.32
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount												$ 1,096,710
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition												1 year 10 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50%	50%	50%		50%		50%			50%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate						51.44%			50.20%		46.75%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term						5 years 9 months			5 years 9 months		5 years 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate						4.17%			4.06%		0.96%
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date						Dec. 08, 2033			Feb. 21, 2033
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number												125,000	125,000	0
Measurement Input, Option Volatility [Member] | Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term						6 years			6 years		6 years
Subsequent Event [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number															125,000
Share based compensation arrangement by share based payment award options acquired number															125,000
Share based compensation arrangement by share based payment award options acquired value															$ 356,250
Non Vested Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period									284,000		343,744	1,566,000		343,744
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value									$ 2.85		$ 2.99	$ 4.83		$ 2.99
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage							50%			50%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number												1,117,000	171,872	343,744			0
Non Vested Restricted Stock [Member] | Share-Based Payment Arrangement, Employee [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period						833,000
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value						$ 6.43
Non Vested Restricted Stock [Member] | Subsequent Event [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period				525,247
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		50%		50%	50%
Non Vested Restricted Stock [Member] | Subsequent Event [Member] | Share-Based Payment Arrangement, Employee [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50%		50%
Non Vested Restricted Stock [Member] | General and Administrative Expense [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Allocated share-based compensation expense, total												$ 317,349	$ 148,280	$ 148,280
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount												$ 5,392,703
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition												1 year 10 months 24 days
Restricted Stock [Member] | General and Administrative Expense [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Allocated share-based compensation expense, total												$ 2,272,057	$ 462,508	$ 462,508
The Plan Member
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Common stock, reserved percentage												10%
The Plan Member | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period												2,174,365
2007 Plan [Member] | Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period												799,000
2007 Plan [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period												555,479

Equity Compensation Plan - Summ

Equity Compensation Plan - Summary of Nonvested Restricted Shares (Detail) - $ / shares				12 Months Ended
	Mar. 24, 2023	Feb. 21, 2023	May 26, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Granted, Number of restricted shares	449,000
Granted, Weighted average grant date fair value per non-vested share	$ 3.11
Non Vested Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Non-vested, Beginning balance, Number of restricted shares				171,872	343,744	0
Granted, Number of restricted shares		284,000	343,744	1,566,000		343,744
Vested, Number of restricted shares				(620,872)	(171,872)
Non-vested, Ending balance, Number of restricted shares				1,117,000	171,872	343,744
Non-vested, Beginning balance, Weighted average grant date fair value per non-vested share				$ 2.99	$ 2.99	$ 0
Granted, Weighted average grant date fair value per non-vested share		$ 2.85	$ 2.99	4.83		2.99
Vested, Weighted average grant date fair value per non-vested share				3.08	2.99
Non-vested, Ending balance, Weighted average grant date fair value per non-vested share				$ 5.52	$ 2.99	$ 2.99

Equity Compensation Plan - Su_2

Equity Compensation Plan - Summary of the Company's non-vested stock option activity (Detail) - Non-vested stock option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstnding, Option Shares	250,000	250,000	0
Granted, Option Shares	250,000	0	250,000
Granted, Option Shares	299,000
Exercised, Option Shares	(250,000)
Outstnding, Option Shares	549,000	250,000	250,000
Outstnding, Weighted-Average Exercise Price	$ 2.99	$ 2.99	$ 0
Granted, Weighted-Average Exercise Price	2.85	0	2.99
Granted, Weighted-Average Exercise Price	6.43
Exercised, Weighted-Average Exercise Price	2.99
Outstnding, Weighted-Average Exercise Price	$ 4.8	$ 2.99	$ 2.99

Earnings_(loss) per share - Bas

Earnings/(loss) per share - Basic and Diluted Earnings Per Share Calculation (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net (loss)/income	$ 51,936,829	$ 34,253,365	$ (35,123,208)
Less: Undistributed earnings allocated to non-vested shares	813,111	216,168	0
Net income/(loss) attributable to common shareholders, basic	$ 51,123,689	$ 34,037,197	$ (35,123,208)
Weighted average number of shares outstanding, basic	37,166,449	37,961,560	37,858,437
Weighted average number of shares outstanding, diluted	37,236,951	37,961,673	37,858,437
(Loss)/Earnings per share, basic	$ 1.38	$ 0.9	$ (0.93)
(Loss)/Earnings per share, diluted	$ 1.37	$ 0.9	$ (0.93)

Earnings_(loss) per share - Add

Earnings/(loss) per share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2020
Earnings Per Share [Line Items]
Dilutive effect excluded from computation of earnings per share	171,872	343,744
Non Vested Restricted Stock [Member]
Earnings Per Share [Line Items]
Share-based compensation arrangement by share-based payment award, options, outstanding, number			549,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	171,872	343,744	1,117,000	0
Anti-dilutive [Member]
Earnings Per Share [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares	250,000	250,000

Revenues - Summary of Analysis

Revenues - Summary of Analysis of Consolidated Statements of Operations (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 143,527,769	$ 152,760,888	$ 150,204,527
Total revenues	143,527,769	152,760,888	150,204,527
Time Charter [Member]
Disaggregation of Revenue [Line Items]
Revenues	124,075,851	114,996,842	105,966,167
Bareboat [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	2,340,791	9,624,684
Voyage Charter [Member]
Disaggregation of Revenue [Line Items]
Revenues	18,268,798	32,156,474	33,813,496
Other Income Revenues [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 1,183,120	$ 3,266,781	$ 800,180

Revenues - Additional Informati

Revenues - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 143,527,769	$ 152,760,888	$ 150,204,527
Unearned revenue	993,982	1,912,239
Voyage Charters [Member]
Disaggregation of Revenue [Line Items]
Contract with customer receivable	800,000	1,500,000
Contract fulfilment cost	130,589	270,514
Voyage Charters [Member] | Demurrage [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 4,200,000	$ 3,400,000	$ 4,100,000

Vessel Operating Expenses - Ves

Vessel Operating Expenses - Vessel Operating Expenses (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Vessel Operating Expenses [Abstract]
Crew wages and related costs	$ 32,676,466	$ 34,721,673	$ 38,454,397
Insurance	1,939,328	2,382,340	2,196,444
Repairs and maintenance	5,480,702	5,716,570	7,282,481
Spares and consumable stores	8,048,657	8,127,376	9,123,975
Miscellaneous expenses	4,972,345	3,996,819	4,452,266
Total	$ 53,117,498	$ 54,944,778	$ 61,509,563

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Commitments and Contingencies Disclosure [Line Items]
Contract receivable, due in next twelve months	$ 83,597,548
Contract receivable, due in year two	37,759,059
Contract receivable, due in year three	28,842,000
Contract receivable, due in year four	14,042,945
Long-term Debt	124,116,991	$ 278,987,204
MGC Aggressive Holdings Inc [Member]
Commitments and Contingencies Disclosure [Line Items]
Long-term Debt	27,000,000
Accrued Interest	$ 483,671
Equity Method Investment, Ownership Percentage	51%	51%
Percentage of outstanding Loan balance	49%
Joint Venture [Member] | MGC Aggressive Holdings Inc [Member]
Commitments and Contingencies Disclosure [Line Items]
Equity Method Investment, Ownership Percentage	49%
Financial Guarantee [Member] | Spacegas Inc., Financial Power Inc. and MGC Aggressive Holdings Inc. [Member]
Commitments and Contingencies Disclosure [Line Items]
Long-term Debt	$ 34,000,000
Accrued Interest	$ 524,262

Leases - The Company as Lesse_2

Leases - The Company as Lessee - Schedule of operating leases (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Non current assets	$ 99,379	$ 0
Liabilities	71,173	0
Liabilities	28,206	0
Office leases [Member]
Lessee, Lease, Description [Line Items]
Liabilities	71,173	0
Liabilities	$ 28,206	$ 0

Leases - The Company as Lesse_3

Leases - The Company as Lessee - Schedule of company's lease expenses (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
General and Administrative Expense [Member]
Lease expense for office leases	$ 104,167	$ 88,326	$ 97,726

Leases - The Company as Lesse_4

Leases - The Company as Lessee - Schedule of total amount of lease payments on an undiscounted basis (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Discount rate	5.60%
2023 (undiscounted lease payments)	$ 107,520
Present value of lease liability	99,379
Lease liabilities - short term	71,173	$ 0
Lease liabilities - long term	28,206	0
Total lease liabilities	99,379
Discount based on incremental borrowing rate	$ 8,141
Office leases [Member]
Discount rate	5.60%
2023 (undiscounted lease payments)	$ 107,520
Present value of lease liability	99,379
Lease liabilities - short term	71,173	0
Lease liabilities - long term	28,206	$ 0
Total lease liabilities	99,379
Discount based on incremental borrowing rate	$ 8,141

Leases - The Company as Lesse_5

Leases - The Company as Lessee - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 USD ($)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 USD ($)
Operating Lease, Payments	$ 104,167	$ 88,326	$ 97,726
Office Space [Member]
Sale Type Minimum Lease Payments Transactions Within Two Years				€ 8,000	$ 8,855	€ 7,000	$ 8,279

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($)

1 Months Ended

12 Months Ended

Feb. 21, 2025

Apr. 23, 2024

Feb. 21, 2024

Dec. 31, 2023

Jul. 01, 2023

Jun. 01, 2023

May 26, 2023

Mar. 24, 2023

Mar. 01, 2023

Feb. 21, 2023

May 26, 2022

May 26, 2021

Feb. 29, 2024

Feb. 28, 2023

Dec. 31, 2023

Dec. 31, 2022

Dec. 31, 2021

Subsequent Event [Line Items]

Repayments of debt

$ 20,300,000

$ 18,200,000

$ 29,700,000

$ 154,870,215

$ 83,579,825

$ 173,012,428

Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period

449,000

Proceeds from related party debt

$ 2,000,000

$ 3,900,000

Non Vested Restricted Stock [Member]

Subsequent Event [Line Items]

Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period

284,000

343,744

1,566,000

343,744

Share-based compensation arrangement by share-based payment award, award vesting rights, percentage

50%

50%

Term Loan [Member]

Subsequent Event [Line Items]

Repayments of debt

$ 8,700,000

$ 5,900,000

Subsequent Event [Member]

Subsequent Event [Line Items]

Proceeds from related party debt

$ 1,000,000

Subsequent Event [Member] | Non Vested Restricted Stock [Member]

Subsequent Event [Line Items]

Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period

525,247

Share-based compensation arrangement by share-based payment award, award vesting rights, percentage

50%

50%

50%

Share-based compensation arrangement by share-based payment award, equity instruments other than options, forfeited in period

123,000

Subsequent Event [Member] | Term Loan [Member]

Subsequent Event [Line Items]

Repayments of debt

$ 29,300,000