StealthGas (GASS) 20-F 29 Apr 22 2021 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Dec. 31, 2021shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
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	38,202,181
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
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, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 31,304,151	$ 38,242,411
Receivables from related party	63,767
Trade and other receivables	2,117,636	3,602,764
Other current assets	298,984	309,608
Claims receivable	62,652	120,547
Inventories	2,772,532	3,687,098
Advances and prepayments	637,881	782,125
Restricted cash	2,198,775	1,308,971
Vessel held for sale	12,250,000
Total current assets	51,706,378	48,053,524
Non current assets
Advances for vessel under construction		6,539,115
Operating lease right-of-use assets	104,168	0
Vessels, net	681,337,153	832,335,059
Other receivables		26,427
Restricted cash	12,197,611	13,488,820
Investments in joint ventures	53,323,032	43,177,657
Deferred finance charges		385,705
Total non current assets	746,961,964	895,952,783
Total assets	798,668,342	944,006,307
Current liabilities
Payable to related parties	1,491,705	4,659,861
Trade accounts payable	8,592,124	9,974,751
Accrued liabilities	3,842,879	3,773,499
Operating lease liabilities	104,168
Customer deposits		968,000
Deferred income	5,666,285	2,995,657
Fair value of derivatives		141,447
Current portion of long-term debt	31,836,619	40,547,892
Current portion of long-term debt associated with vessels held for sale	7,173,988
Total current liabilities	58,707,768	63,061,107
Non current liabilities
Fair value of derivatives	3,151,880	5,099,464
Deferred income	76,949
Long-term debt	261,960,975	311,249,321
Total non current liabilities	265,189,804	316,348,785
Total liabilities	323,897,572	379,409,892
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 43,183,684 shares issued and 37,858,437 shares outstanding at December 31, 2020 and 43,527,428 shares issued and 38,202,181 shares outstanding at December 31, 2021 with a par value of $0.01 per share	435,274	431,836
Treasury stock, 5,325,247 at both December 31, 2020 and December 31, 2021 with a par value of $0.01 per share	(25,373,380)	(25,373,380)
Additional paid-in capital	443,009,334	499,564,087
Retained earnings	59,803,487	94,926,695
Accumulated other comprehensive loss	(3,103,945)	(4,952,823)
Total stockholders' equity	474,770,770	564,596,415
Total liabilities and stockholders' equity	$ 798,668,342	$ 944,006,307

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
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	43,527,428	43,183,684
Common stock, shares outstanding	38,202,181	37,858,437
Common stock,par value	$ 0.01	$ 0.01
Treasury stock, shares	5,325,247	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, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Revenues	$ 150,204,527	$ 145,003,021	$ 144,259,312
Total revenues	150,204,527	145,003,021	144,259,312
Expenses
Voyage expenses	20,342,186	12,259,795	15,201,978
Voyage expenses – related party	1,867,100	1,799,209	1,788,543
Charter hire expenses	0	318,606	6,268,988
Vessels' operating expenses	60,443,813	52,344,721	48,619,594
Vessels' operating expenses – related party	1,065,750	950,500	966,500
Dry-docking costs	5,285,490	3,640,327	1,094,306
Management fees – related party	5,831,900	5,599,351	5,730,910
General and administrative expenses (including $1,294,722, $1,205,683 and $1,084,961 to related party)	4,337,013	2,301,308	3,706,320
Depreciation	37,125,903	37,455,093	37,693,733
Impairment loss	44,616,214	3,857,307	993,916
Net loss on sale of vessels	304,210	1,134,854	485,516
Total expenses	181,219,579	121,661,071	122,550,304
Income/(Loss) from operations	(31,015,052)	23,341,950	21,709,008
Other (expenses)/income
Interest and finance costs	(12,678,101)	(14,129,893)	(20,978,065)
Gain on deconsolidation of subsidiaries	0	0	145,000
Loss/(gain) on derivatives	240,153	(50,976)	(107,550)
Interest income and other income	26,379	167,794	846,271
Foreign exchange loss	(23,288)	(54,374)	(8,235)
Other expenses, net	(12,434,857)	(14,067,449)	(20,102,579)
Income/(Loss) before equity in earnings of investees	(43,449,909)	9,274,501	1,606,429
Equity earnings in joint ventures	8,326,701	2,709,984	486,695
Net Income/(Loss)	$ (35,123,208)	$ 11,984,485	$ 2,093,124
Earnings/(Loss) per share
– Basic and diluted	$ (0.93)	$ 0.31	$ 0.05
Weighted average number of shares
– Basic and diluted	37,858,437	38,357,893	39,800,434

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
General and administrative expenses, related party	$ 1,126,112	$ 1,084,961	$ 1,205,683

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss)/Income - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income/(loss)	$ (35,123,208)	$ 11,984,485	$ 2,093,124
Other comprehensive (loss)/income
Effective portion of changes in fair value of interest swap contracts	2,114,488	(2,632,826)	(2,848,056)
Reclassification adjustment	(265,610)	(60,954)	(84,966)
Total other comprehensive (loss)/income	1,848,878	(2,693,780)	(2,933,022)
Total comprehensive (loss)/income	$ (33,274,330)	$ 9,290,705	$ (839,898)

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, 2018	$ 561,252,511	$ 445,496	$ (22,523,528)	$ 501,807,478	$ 80,849,086	$ 673,979
Balance (in shares) at Dec. 31, 2018		44,549,729	(4,424,545)
Stock based compensation	611,644			611,644
Stock repurchase	(1,837,617)		$ (1,837,617)
Stock repurchase (in shares)			(540,910)
Comprehensive income/(loss) for the year	(839,898)				2,093,124	(2,933,022)
Ending balance at Dec. 31, 2019	559,186,640	$ 445,496	$ (24,361,145)	502,419,122	82,942,210	(2,259,043)
Ending Balance, (in shares) at Dec. 31, 2019		44,549,729	(4,965,455)
Stock repurchase	(1,012,235)		$ (1,012,235)
Stock repurchase (in shares)			(359,792)
Stock repurchase and cancellation	(2,868,695)	$ (13,660)		(2,855,035)
Stock repurchase and cancellation (in shares)		(1,366,045)
Comprehensive income/(loss) for the year	9,290,705				11,984,485	(2,693,780)
Ending balance at Dec. 31, 2020	564,596,415	$ 431,836	$ (25,373,380)	499,564,087	94,926,695	(4,952,823)
Ending 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)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Cash flows from operating activities
Net income/(loss) for the year	$ (35,123,208)	$ 11,984,485	$ 2,093,124
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation	37,125,903	37,455,093	37,693,733
Amortization of deferred finance charges	1,157,804	698,364	885,191
Amortization of operating lease right-of-use assets	89,638	473,132	1,572,943
Share based compensation	610,788	0	611,644
Change in fair value of derivatives	(240,153)	(38,561)	255,650
Equity earnings in joint ventures	(8,326,701)	(2,709,984)	(486,695)
Impairment loss	44,616,214	3,857,307	993,916
Net loss on sale of vessels	304,210	1,134,854	485,516
Gain on deconsolidation of subsidiaries	0	0	(145,000)
(Increase)/decrease in
Trade and other receivables	(977,005)	874,825	(1,506,590)
Other current assets	10,624	(191,362)	16,055
Claims receivable	57,895	193,670	(1,307,763)
Inventories	644,079	(1,239,395)	617,468
Changes in operating lease liabilities	(89,638)	(473,132)	(1,572,943)
Advances and prepayments	(100,482)	(32,444)	339,858
Increase/(decrease) in
Balances with related parties	(3,231,923)	1,617,032	(5,845,771)
Trade accounts payable	262,569	761,193	(1,316,668)
Accrued liabilities	557,086	(2,403,644)	(217,409)
Deferred income	3,690,981	151,663	(2,347,660)
Net cash provided by operating activities	41,038,681	52,113,096	30,818,599
Cash flows from investing activities
Insurance proceeds	0	0	993,546
Proceeds from sale of interests in subsidiaries	0	0	20,720,975
Vessels' acquisitions and advances for vessels under construction	(25,224,746)	(48,121,422)	(2,988,903)
Proceeds from sale of vessels, net	7,795,790	5,264,768	18,721,123
Investment in joint ventures	(3,348,675)	(41,998,500)	(11,322,600)
Return of investments from joint ventures	1,530,000	26,781,000	7,363,147
Advances to joint ventures	0	(29,245)	(5,083,919)
Advances from joint ventures	0	29,245	5,083,919
Net cash provided by/(used in) investing activities	(19,247,631)	(58,074,154)	33,487,288
Cash flows from financing activities
Stock repurchase	0	(3,880,930)	(1,837,617)
Deferred finance charges paid	(1,463,766)	(538,004)	(477,201)
Advances from joint ventures	0	1,841,380	4,958,250
Advances to joint ventures	0	(5,841,672)
Customer deposits paid	(600,000)	0	(368,000)
Loan repayments	(173,012,428)	(41,804,846)	(97,371,978)
Proceeds from long-term debt	150,650,000	27,105,000	33,480,000
Cash retained by Imperial at spin-off	(4,704,521)
Net cash used in financing activities	(29,130,715)	(23,119,072)	(61,616,546)
Net increase/(decrease) in cash and cash equivalents	(7,339,665)	(29,080,130)	2,689,341
Cash and cash equivalents and restricted cash at beginning of year	53,040,202	82,120,332	79,430,991
Cash and cash equivalents and restricted cash at end of year	45,700,537	53,040,202	82,120,332
Cash breakdown
Cash and cash equivalents	31,304,151	38,242,411	68,465,342
Restricted cash, current	2,198,775	1,308,971	1,589,768
Restricted cash, non-current	12,197,611	13,488,820	12,065,222
Total cash, cash equivalents and restricted cash shown in the statements of cash flows	45,700,537	53,040,202	82,120,332
Supplemental Cash Flow Information:
Cash paid during the year for interest, net of amounts capitalized	8,607,590	12,905,065	20,768,672
Non cash investing activity – Vessels	217,570	387,220	$ 63,752
Non cash financing activity – Deferred finance charges	0	$ 32,464
Distribution of net assets of Imperial Petroleum Inc. to stockholders (Note 1)	$ 57,162,103

Basis of Presentation and Gener

Basis of Presentation and General Information	12 Months Ended
	Dec. 31, 2021
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, 2021 owned a fleet of thirty seven liquefied 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 2019, 2020 and 2021, the following charterers accounted for 10% or more of the Company’s revenues. Year ended December 31, Charterer 2019 2020 2021 A 12 % 15 % — B 10 % — — C 10 % 10 % — 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 Coronavirus Outbreak: Novel

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies Principles of Consolidation: Use of Estimates: Actual Other Comprehensive (Loss)/income: Foreign Currency Translation: Cash and Cash Equivalents: Restricted Cash: non-current Trade Receivables: un-collectible completed sale within one year and (v) the vessels are being actively marketed for sale at a price that is reasonable in relation to their current fair value and actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. Vessels classified as held for sale are measured at the lower of their carrying amount or fair value less cost to sell. These vessels are not depreciated once they meet the criteria to be classified as held for sale. Furthermore, in the period a vessel meets the held for sale criteria in accordance with ASC 360-10, Segment Reporting: Accounting for Special Survey and Dry-docking dry-docking incurred 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, which is generally payable in advance. Operating costs incurred for running the vessel such as crew costs, vessel insurance, repairs and maintenance and lubricants are paid for by the Company under time charter agreements. 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, and therefore do not fall under the scope of Accounting Standards Codification (“ASC”) 606 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 expenses and risk of operation. provision for doubtful accounts. No provision for doubtful accounts was required for any of the periods presented. Claims Receivable: Inventories: first-in, first-out Advances for vessels under construction: on-site Vessels Acquisitions: Impairment or Disposal of Long-lived Assets: 360-10, 360-10”), dry-docking Vessels’ Depreciation: Assets Held for Sale: On implementation of ASC 842, 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 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 their services as directors and is included in General non-vested 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. 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. 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 as a component of “Loss on derivatives”. (ii) Other Derivatives he fair v Investments in joint ventures: impairment 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 charter-in Recent Accounting Pronouncements : 2021-01—Reference he

Transactions with Related Parti

Transactions with Related Parties	12 Months Ended
	Dec. 31, 2021
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 four vessels for which a fixed daily fee of $280 is charged by the Manager as part of the services is provided by a third party manager) or $125 per vessel operating under a bareboat charter (the “Management fees”) and a brokerage commission of 1.25% on freight, hire and demurrage per vessel (the “Brokerage commissions”), as per the management agreement between the Manager and the Company. The Manager has subcontracted the technical management of some of the vessels to an affiliated ship-management company, Brave Maritime Corp. Inc. (“Brave”). This company provides technical management to the Company’s vessels for a fixed annual fee per vessel which is paid by the Manager. In addition, the Manager arranges for supervision onboard the vessels, when required, by superintendent engineers and when such visits exceed a period of five days in a twelve month period, an amount of $500 is charged for each additional day (the “Superintendent fees”). Effective from 2018, the Manager provides crew management services to some of the Company’s vessels. These services have been subcontracted by the Manager to an affiliated ship-management company, Hellenic Manning Overseas Inc. (ex. Navis Maritime Services Inc.). The Company pays to the Manager a fixed monthly fee of $ per vessel (the “Crew management fees”). 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. The commission fees relating to vessels sold (“Commissions – vessels sold”) and the vessel held for sale (“Commissions – vessel held for sale”) 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, its Deputy Chairman and Executive Director (up to the third quarter of 2019) and its Chief Technical Officer (the “Executive compensation”). The current account balance with the Manager at December 31, 2020 and at December 31, 2021 was a liability of $3,701,903 and a receivable of $63,767, respectively. The liability mainly represents payments made by the Manager on behalf of the ship-owning companies. The current account balance with Imperial at December 31, 2021 was a payable of $355,023 and mainly represents revenues collected by the Company on behalf of Imperial and its subsidiaries. Imperial and the Company have common management at December 31, 2021. Furthermore, the current account balance with entities that the Company owns 50.1% equity interests (Note 7) amounted to a liability of $957,958 and $1,136,682 as of December 31, 2020 and 2021, 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”). On April 1, 2020, the Company entered into a supervision agreement with Brave for the supervision of the construction of the vessel discussed in Note 5 for a fixed fee of Euro 390,000 (the “Supervision fees”). The amounts charged by the Company’s related parties comprised the following: Year ended December 31, Location in statement of operations 2019 2020 2021 Management fees Management fees – related party 5,730,910 5,599,351 5,831,900 Brokerage commissions Voyage expenses – related party 1,788,543 1,799,209 1,867,100 Superintendent fees Vessels’ operating expenses – related party 104,000 38,000 117,000 Crew management fees Vessels’ operating expenses – related party 862,500 912,500 948,750 Commissions - vessels sold Net loss on sale of vessels 109,000 54,000 81,000 Commissions - vessel held for sale Impairment loss — — 125,000 Executive compensation General and administrative expenses 1,118,491 994,840 1,028,386 Rental expense General and administrative expenses 87,192 90,121 97,726 December 31, Location in balance sheet 2019 2020 2021 Commissions - vessels purchased Vessels, net — 435,000 289,347 Supervision fees Advances for vessel under construction/Vessels, net — 210,970 236,521 On June 5, 2020, 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 the vessels “Eco Alice” and “Eco Texiana” for $24,000,000 and $19,500,000, respectively. The vessels were delivered to the Company on September 30, 2020 and June 19, 2020, respectively. 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. Gas Enterprises International Inc. currently has an LPG vessel under construction. The option was exercised and the Company contributed its 51% interests in Gas Enterprises International Inc. to MGC Agressive Holdings Inc. (Note 7).

Inventories

Inventories	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventories	4. Inventories The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: December 31, 2020 2021 Bunkers 2,152,601 1,120,372 Lubricants 1,534,497 1,652,160 Total 3,687,098 2,772,532

Advances for Vessel Under Const

Advances for Vessel Under Construction and Acquisitions	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Advances for Vessel Under Construction and Acquisitions	5. Advances for Vessel Under Construction and Acquisitions The amounts shown in the accompanying consolidated balance sheet as of December 31, 2020 mainly represent advance payments to a shipbuilder for one LPG carrier under construction that the Company agreed to acquire in 2019. The vessel, which was named “Eco Blizzard”, was delivered to the Company on February 5, 2021 after the payment of the delivery installment to the shipbuilder amounting to $23,152,125. For the years ended December 31, 2020 and 2021, the movement of the account, advances for vessel under construction and acquisitions was as follows: Balance, December 31, 2019 2,988,903 Advance for vessel under construction 2,891,283 Capitalized interest 168,344 Supervision fees (Note 3) 210,970 Other capitalized expenses 279,615 Balance, December 31, 2020 6,539,115 Advance for vessel under construction 23,152,125 Supervision fees (Note 3) 236,521 Commissions - vessels purchased (Note 3) 289,347 Capitalized interest 20,060 Other capitalized expenses 129,729 Transfer to vessels. Net (Note 6) (30,366,897 ) Balance, December 31, 2021 —

Vessels, net

Vessels, net	12 Months Ended
	Dec. 31, 2021
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 Net Book Balance, December 31, 2019 1,087,601,983 (252,449,580 ) 835,152,403 Additions 44,894,678 — 44,894,678 Impairment loss (14,511,735 ) 10,654,428 (3,857,307 ) Disposals (6,500,000 ) 100,378 (6,399,622 ) Depreciation for the year — (37,455,093 ) (37,455,093 ) Balance, December 31, 2020 1,111,484,926 (279,149,867 ) 832,335,059 Transfer from Advances for vessel under construction and acquisitions (Note 5) 30,366,897 — 30,366,897 Other additions 1,227,314 — 1,227,314 Impairment loss (169,553,060 ) 124,936,846 (44,616,214 ) Disposals (8,100,000 ) — (8,100,000 ) Transfer to Vessel held for sale (12,250,000 ) — (12,250,000 ) Spin-off (80,500,000 ) — (80,500,000 ) Depreciation for the year — (37,125,903 ) (37,125,903 ) Balance, December 31, 2021 872,676,077 (191,338,924 ) 681,337,153 During the first quarter of 2019, the Company entered into four joint venture agreements with a third party investor based on which the third party investor acquired a 49.9% equity interest in four vessel owning companies of the Company and gained co-ownership In September 2019, the Company entered into a memorandum of agreement for the disposal of the vessel “Gas Ethereal”, to an unaffiliated third party for $10,900,000. The vessel was delivered to her new owners on September 27, 2019. The Company decided to dispose the above mentioned vessels as the agreed selling price was a suitable opportunity for the Company and together with minor additional selling costs, arising from the delivery of “Gas Sincerity and “Gas Texiana” to their new owners, realized an aggregate loss from the sale of these vessels of $485,516, 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, 2019. As of December 31, 2019, 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 $993,916 which is presented under the caption “Impairment loss” in the consolidated statements of operations. As of June 30, 2020, 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 $653,079 which is presented under the caption “Impairment loss” in the consolidated statements of operations. On September 25, 2020, the Company decided to seek to dispose of the vessel “Gas Nemesis II”. As a result of this decision, the undiscounted net operating cash flows of this vessel did not exceed its carrying value and the Company identified and recognized an impairment charge of $2,489,333 in its consolidated statement of operations In November 2020, the Company concluded a memorandum of agreement for the disposal of the vessel “Gas Pasha”, to an unaffiliated third party for $900,000. The vessel was delivered to her new owners on December 7, 2020. The Company disposed the above mentioned vessels as the agreed selling price was a suitable opportunity for the Company and realized an aggregate loss from the sale of these vessels of $1,134,854 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, 2020. As of December 31, 2020, 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 one vessel and therefore the Company identified and recorded an impairment loss of $714,895 which is presented under the caption “Impairment loss” in the consolidated statements of operations. The additions in 2020 mainly relate to the acquisition of vessels “Eco Alice” and “Eco Texiana” (Note 3) and to the installation of ballast water treatment systems. The additions in 2021 mainly relate to the delivery of the vessel “Eco Blizzard” (Note 5) and other capitalized expenses. On May 31, 2021, the Company entered into a memorandum of agreement for the disposal of the vessel “Eco Loyalty” to an unaffiliated third party for a total of $12,500,000. The vessel was classified as vessels held for sale as of June 30 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 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. As of December 3 1 0 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. This vessel had a net book value, after impairment, of $9,650,000 as of December 31, 2021.

Investments in Joint Ventures

Investments in Joint Ventures	12 Months Ended
	Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]
Investments in Joint Ventures	7. Investments in joint ventures During the first quarter of 2019, the Company entered into four joint venture agreements with a third party investor based on which the third party investor acquired for $20,720,975 a 49.9% equity interest in Spacegas Inc., Financial Power Inc., Cannes View Inc. and Colorado Oil and Gas Inc., four vessel owning companies of the Company, which own the vessels “Gas Defiance”, “Gas Shuriken”, “Gas Haralambos” and “Eco Lucidity”. The remaining 50.1% equity interest was valued at $20,804,025. The Company contributed funds for working capital purposes amounting to $751,500. During the third quarter of 2019, Cannes View Inc. and Colorado Oil and Gas Inc., using the proceeds of a loan agreement that was entered into on July 9, 2019, returned an amount of $14,696,900 to the Company and the third party investor based on their equity interests. Amount returned to the Company amounted to $7,363,147. On May 22, 2019, Frost Investments Corp Inc. was incorporated under the laws of the Marshall Islands. Frost Investments Corp Inc. acquired for $20,400,000 the vessel Eco Nebula and under a joint venture agreement is owned by the Company (50.1%) and by the third party investor (49.9%). The Company contributed funds for the acquisition of vessel Eco Nebula and for working capital purposes amounting to $10,571,100, as needed and proportionate to its 50.1% equity interest. On February 13, 2020, the Company entered into a joint venture agreement with an unaffiliated third party, for the purpose of acquiring three medium gas carriers and the establishment of a new holding company. The new holding company, MGC Agressive Holdings Inc., was established and the Company has a 51% equity interest in it. Pursuant to this joint venture agreement, subsidiaries of MGC Agressive Holdings Inc. acquired on February 28, 2020, two medium gas carriers, the Gaschem Hamburg and the Gaschem Stade, and on March 11, 2020, one medium gas carrier, the Gaschem Bremen, at an aggregate price of $80,550,000. The Company contributed funds for the acquisition of these vessels and for working capital purposes amounting to $41,998,500, as needed and proportionate to its 51% equity interest. During the second quarter of 2020, MGC Agressive Holdings Inc., using the proceeds of a loan agreement that was entered into on May 7, 2020, returned an amount of $47,600,000 to the Company and the unaffiliated third party based on their equity interests. Amount returned to the Company amounted to $24,276,000. During the second quarter of 2020, Frost Investments Corp Inc., using the proceeds of a loan agreement that was entered into on December 3, 2019, returned an amount of $5,000,000 to the Company and the third party investor based on their equity interests. Amount returned to the Company amounted to $2,505,000. During the first quarter of 2021, a subsidiary of MGC Agressive Holdings Inc. entered into a memorandum of agreement for the disposal of the vessel Gaschem Hamburg to an unaffiliated third party for $34,000,000. The vessel was delivered to its new owners on May 10, 2021. 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. 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 vessels are managed by the Manager, pursuant to management agreements, while three of the vessels were also managed by a third party manager during 2020. 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. As of December 31, 2021, the carrying value of the Company’s equity method investments was $1.95 million higher than its interest in the investee’s underlying net assets. This basis difference relates to a vessel under construction and will be amortized over the vessel’s useful life. A condensed summary of the financial information for equity accounted investments partially owned by the Company shown on a 100 December 31, 2020 Spacegas Financial Cannes Colorado Oil Frost MGC Inc. Current assets 2,163,484 2,359,816 1,267,542 1,126,697 10,831,800 5,096,668 Non-current 12,559,048 12,575,608 13,801,972 12,335,790 19,464,419 82,809,937 Current liabilities 1,118,776 1,491,243 1,440,769 2,688,747 2,575,067 8,315,433 Long-term liabilities 4,855,255 4,855,255 7,050,860 6,169,497 9,384,573 40,958,366 Revenues 3,222,037 3,481,799 2,764,359 2,704,455 6,866,426 18,409,814 Operating income/(loss) 451,895 935,869 (645,197 ) (817,717 ) 3,122,539 4,869,260 Net income/(loss) 246,616 728,428 (1,019,886 ) (1,155,342 ) 2,656,770 3,882,812 December 31, 2021 Spacegas Financial Cannes Colorado Oil Frost MGC Inc. Current assets 2,347,954 3,112,192 1,630,592 1,017,765 13,208,202 23,228,225 Non-current 11,900,116 11,924,795 13,071,670 11,870,528 18,532,414 56,221,031 Current liabilities 1,426,492 1,506,835 1,687,929 3,231,113 2,247,545 5,357,705 Long-term liabilities 4,178,256 4,178,256 6,307,812 5,519,327 8,008,092 22,799,849 Revenues 3,023,283 3,464,824 4,227,682 3,154,728 7,162,657 17,468,871 Operating income/(loss) 26,559 893,121 396,337 (216,091 ) 3,509,152 13,857,864 Net (loss)/income (105,179 ) 762,975 128,636 (466,393 ) 3,148,404 12,918,760

Accrued Liabilities

Accrued Liabilities	12 Months Ended
	Dec. 31, 2021
Payables and Accruals [Abstract]
Accrued Liabilities	8. Accrued Liabilities The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: December 31, 2020 2021 Interest on long-term debt 1,887,414 1,883,321 Administrative expenses 209,553 210,930 Vessel operating and voyage expenses 1,676,532 1,748,628 Total 3,773,499 3,842,879

Deferred Income

Deferred Income	12 Months Ended
	Dec. 31, 2021
Text Block [Abstract]
Deferred Income	9. Deferred Income The amounts shown in the accompanying consolidated balance sheets amounting to $2,995,657 and $5,743,234 mainly

Customer Deposits

Customer Deposits	12 Months Ended
	Dec. 31, 2021
Text Block [Abstract]
Customer Deposits	10. Customer Deposits These amounts represent deposits received from charterers as guarantees and are comprised as follows: (a) On October 12, 2015 an amount of $736,000 was received from the bareboat charterer of Product carrier “Clean Thrasher” (ex. “Stealth Falcon”) which is equal to three-months hire. On May 30, 2019 the amount of $368,000 was paid to the bareboat charterers. The remaining amount of $368,000 was kept as a guarantee for another vessel chartered to the same charterer and was included in the net assets of Imperial that were distributed to the stockholders of the Company (Note 1). (b) On February 21, 2015 an amount of $1,820,700 was received from the bareboat charterer of Aframax tanker “Stealth Berana” (ex. “Spike”) which is equal to five-months hire. An amount of $1,220,700 was returned to the charterer at the end of the bareboat charter on March 7, 2018. The remaining amount of $600,000 was kept as a guarantee for the new bareboat charter which commenced on March 7, 2018. The bareboat charter ended during 2020 and the balance was fully settled in 2021 following the agreement reached with the charterers (Note 19).

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Long-term Debt	11. Long-term Debt Term Loans Drawn Amount December 31, 2020 2021 Issue Date/ Maturity Date December 14, 2018 November 10, 2021 14,094,184 9,694,184 — May 28, 2019 August 6, 2021 11,000,000 9,080,000 — August 6, 2019 August 6, 2021 27,675,000 18,600,000 — July 5, 2019 July 11, 2026 22,230,000 18,260,357 15,084,643 March 29, 2019 December 29, 2022 25,458,432 13,701,816 3,039,647 January 11, 2021 January 14, 2026 50,225,000 25,420,000 22,675,000 December 14, 2018 December 18, 2023 9,480,000 7,880,000 7,080,000 June 20, 2014 January 21, 2021 20,925,000 12,760,000 — August 6, 2019 August 6, 2021 67,200,000 43,635,000 — December 24, 2015 January 25, 2021 22,400,000 14,933,360 — January 19, 2021 January 21, 2028 43,800,000 14,218,750 40,731,975 July 29, 2014 July 7, 2023 25,350,000 14,259,375 12,146,875 December 7, 2017 November 10, 2021 22,275,000 14,010,000 — May 18, 2016 December 31, 2025 65,650,000 52,842,620 48,739,300 March 1, 2017 April 17, 2026 70,787,500 57,512,495 52,456,243 June 17, 2020 June 19, 2026 11,505,000 11,121,500 10,354,500 April 30, 2020 November 7, 2026 15,600,000 15,600,000 14,733,333 April 30, 2020 February 4, 2027 18,850,000 — 18,064,582 August 5, 2021 August 6, 2026 60,000,000 — 58,060,931 Total 353,529,457 303,167,029 Current portion of long-term debt 41,161,686 32,464,732 Current portion of long-term debt associated with vessel held for sale — 7,173,988 Long-term debt 312,367,771 263,528,309 Total debt 353,529,457 303,167,029 Current portion of deferred finance charges 613,794 628,113 Deferred finance charges non-current 1,118,450 1,567,334 Total deferred finance charges 1,732,244 2,195,447 Total debt 353,529,457 303,167,029 Less: Total deferred finance charges 1,732,244 2,195,447 Total debt, net of deferred finance charges 351,797,213 300,971,582 Less: Current portion of long-term debt, net of current portion of deferred finance charges 40,547,892 31,836,619 Less: Current portion of long-term debt, associated with vessel held for sale — 7,173,988 Long-term debt 311,249,321 261,960,975 On December 21, 2021, the Company entered into a term loan with a bank to refinance the existing term loans dated July 29, 2014, December 14, 2018, July 5, 2019 and June 17, 2020. Outstanding balance of these loans as of December 31, 2021 amounted to $44,666,018. The new term loan amounts to $59,400,000 , and carries interest at LIBOR 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 Obligations with a maturity of less than one year relating to the previous loans 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 $2,198,775 representing a proportionate amount of the next instalment and relevant interest plus a minimum aggregate cash balance amounting to $12,197,611 in the earnings accounts with the relevant banks, • 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, 2021 are based on LIBOR plus a margin which varies from 2.00% to 3.00%. The average interest rates (including the margin) on the above outstanding loans for the applicable periods were: Year ended December 31, 2019: 4.91% Year ended December 31, 2020: 3.58% Year ended December 31, 2021: 2.88% Bank loan interest expense for the above loans for the years ended December 31, 2019, 2020 and 2021 amounted to $19,999,902, $12,116,941 and $8,684,097, respectively. Of these amounts, for the years ended December 31, 2019, 2020 and 2021, the amounts of $97,620, $168,344 and $20,060, respectively, were capitalized as part of advances paid for vessels under construction. 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, 2019, 2020 ad 2021, the amortization of deferred financing charges amounted to $885,191, $698,364 and $1,157,804, respectively, and is included in interest and finance costs in the consolidated statements of operations. At December 31, 2021, 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, 2021, and after taking into account the refinancing arrangements, are as follows: December 31, Amount 202 2 39,638,720 202 3 30,607,086 202 4 30,607,086 202 5 62,933,106 202 6 91,723,313 Thereafter 47,657,718 Total 303,167,029

Derivatives and Fair Value Disc

Derivatives and Fair Value Disclosures	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Derivatives and Fair Value Disclosures	12. 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 six floating-to-fixed 1 The following table presents information relating to the Company’s interest rate swap arrangements as of December 31, 2020 and 2021. Effective Termination Fixed Rate Floating Rate Fair Value Asset/ Notional Fair Value Asset/ Notional Swap 1 November 4, 2015 August 4, 2021 1.52 % 3 month U.S. dollar LIBOR $ (69,821 ) $ 7,109,375 — — Swap 2 December 3, 2015 September 3, 2021 1.55 % 3 month U.S. dollar LIBOR $ (71,626 ) $ 7,109,375 — — Swap 3 August 16, 2017 May 16, 2025 2.12 % 3 month U.S. dollar LIBOR $ (857,234 ) $ 12,695,750 $ (358,988 ) $ 11,680,250 Swap 4 March 12, 2018 December 11, 2022 2.74 % 3 month U.S. dollar LIBOR $ (598,572 ) $ 14,010,000 — — Swap 5 April 10, 2018 December 11, 2025 2.74 % 3 month U.S. dollar LIBOR $ (2,682,391 ) $ 27,452,000 $ (1,398,025 ) $ 25,380,000 Swap 6 February 16, 2019 February 16, 2024 2.89 % 3 month U.S. dollar LIBOR $ (961,267 ) $ 12,695,750 $ (486,439 ) $ 11,680,250 Swap 7 January 21, 2021 January 21, 2028 0.73 % 3 month U.S. dollar LIBOR — — $ (293,862 ) $ 13,210,750 Swap 8 January 21, 2021 January 21, 2028 0.73 % 3 month U.S. dollar LIBOR — — $ (292,709 ) $ 13,173,250 Swap 9 January 21, 2021 January 21, 2028 0.74 % 3 month U.S. dollar LIBOR — — $ (321,857 ) $ 14,347,975 Total $ (5,240,911 ) $ 81,072,250 $ (3,151,880 ) $ 89,472,475 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 loss. Tabular disclosure of financial instruments is as follows: Derivatives designated as hedging instruments Balance Sheet Location December 31, 2020 2021 Asset Liability Asset Liability Interest Rate Swap Agreements Current liabilities — Fair value of derivatives — 141,447 — — Interest Rate Swap Agreements Non current liabilities — Fair value of derivatives — 5,099,464 — 3,151,880 Total derivatives designated as hedging instruments — 5,240,911 — 3,151,880 The effect of derivative instruments on the consolidated statements of operations for the years ended December 31, 2019, 2020 and 2021 is as follows: Derivatives not designated as hedging instruments Location of Gain/(Loss) Year Ended December 31, 2019 2020 2021 Interest Rate Swap — Reclassification from OCI Loss on derivatives 84,966 60,954 265,610 Interest Rate Swap — Change in Fair Value Loss on derivatives (327,147 ) 7,186 — Interest Rate Swap — Realized income/(expense) Loss on derivatives 134,631 (119,116 ) (25,457 ) Total loss/(gain) on derivatives (107,550 ) (50,976 ) 240,153 Derivatives designated as hedging instruments Location of (Loss)/Gain Year Ended December 31, 2019 2020 2021 Interest Rate Swap — Realized Income/(Loss) Interest and finance costs 67,424 (1,190,400 ) (2,183,187 ) Total loss on derivatives 67,424 (1,190,400 ) (2,183,187 ) The components of accumulated other comprehensive loss included in the accompanying consolidated balance sheets consist of unrealized gain / (loss) on cash flow hedges and are analyzed as follows: Unrealized Gain / Balance, January 1, 2019 673,979 Effective portion of changes in fair value of interest swap contracts (2,848,056 ) Reclassification adjustment (84,966 ) Balance, December 31, 2019 (2,259,043 ) Effective portion of changes in fair value of interest swap contracts (2,632,826 ) Reclassification adjustment (60,954 ) Balance, December 31, 2020 (4,952,823 ) Effective portion of changes in fair value of interest swap contracts 2,114,488 Reclassification adjustment (265,610 ) Balance, December 31, 2021 (3,103,945 ) Fair Value of Financial Instruments and Concentration of Credit Risk non-performance instruments. Cash and cash equivalents and restricted cash are considered Level 1 items as they represent liquid assets with short-term maturities. The fair value of long term bank loans is estimated based on current 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 LIBOR. LIBOR 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 LIBOR swap yield curves. LIBOR 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, 2020: Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Assets/(Liabilities): Interest Rate Swap Agreements (5,240,911 ) — (5,240,911 ) — Total (5,240,911 ) — (5,240,911 ) — 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, 2021: Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Assets/(Liabilities): Interest Rate Swap Agreements (3,151,880 ) — (3,151,880 ) — Total (3,151,880 ) — (3,151,880 ) — The following tables present the fair values for assets measured on a non-recurring Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Impairment Long-lived assets held and used 3,000,000 — 3,000,000 — (305,607 ) Total 3,000,000 — 3,000,000 — (305,607) As a result of the impairment analysis performed as of June 30, 2020, one of the Company’s vessels (held and used) was written down to its estimated fair value as determined by the Company based on vessel valuations, obtained from independent third party shipbrokers, which are mainly based on recent sales and purchase transactions of similar vessels, resulting in an impairment charge of $305,607. Depreciation amounting to $170,884 was recorded in the period from July 1, 2020 to December 31, 2020 and the vessel was presented at its new deemed cost less depreciation of $2,829,116 in the accompanying consolidated balance sheet as of December 31, 2020. Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Impairment Long-lived assets held and used 3,500,000 — 3,500,000 — (714,895 ) Total 3,500,000 — 3,500,000 — (714,895) As a result of the impairment analysis performed as of December 31, 2020, one of the Company’s vessels (held and used) was written down to its estimated fair value as determined by the Company based on vessel valuations, obtained from independent third party shipbrokers, which are mainly based on recent sales and purchase transactions of similar vessels, resulting in an impairment charge of $714,895. Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Impairment Long-lived assets held for sale 12,500,000 — 12,500,000 — (1,125,243 ) Long-lived assets held and used 3,250,000 — 3,250,000 — (49,977 ) Total 15,750,000 — 15,750,000 — (1,175,220) The vessel Eco Loyalty was recorded at its fair value less costs to sell of $12,250,000 as of June 30, 2021 following the memorandum of agreement for the disposal of this vessel in May 2021. Fair value amounted to $12,500,000 and estimated costs to sell amounted to $250,000. Fair value was determined based on the transaction price, as the sale price was agreed with an unaffiliated third party. The vessel Gas Monarch (held and used) was written down to its estimated fair value of $3,250,000 as of June 30, 2021, as determined by the Company based on vessel valuations, obtained from independent third party shipbrokers, which are mainly based on recent sales and purchase transactions of similar vessels, resulting in an impairment charge of $49,977. Depreciation amounting to $195,858 was recorded in the period from July 1, 2021 to December 31, 2021. As of December 31, 2021, the vessel was written down to its estimated fair value of $3,000,000, as determined by the Company based on vessel valuations, obtained from independent third party shipbrokers, which are mainly based on recent sales and purchase transactions of similar vessels, resulting in an impairment charge of $54,142. 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, which sale remains subject to customary conditions. Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Impairment Long-lived assets held and used 12,650,000 — 12,650,000 — (1,333,950 ) Total 12,650,000 — 12,650,000 — (1,333,950) As a result of the impairment analysis performed as of December 31, 2021, two of the Company’s vessels (held and used ), including the vessel Gas Monarch discussed above,

Capital Stock, Treasury Stock a

Capital Stock, Treasury Stock and Additional Paid-in Capital	12 Months Ended
	Dec. 31, 2021
Federal Home Loan Banks [Abstract]
Capital Stock, Treasury Stock and Additional Paid-in Capital	13. Capital Stock, Treasury Stock and Additional Paid-in The amounts shown in the accompanying consolidated balance sheets as additional paid-in On May 23, 2019, the Company’s Board of Directors approved the extension of the existing stock repurchase plan for an additional amount of $10,000,000 to be used for repurchasing the Company’s common shares. For the year ended December 31, 2019, the Company completed the repurchase of 540,910 shares paying an average price per share of $3.40. For the year ended December 31, 2020, the Company completed the repurchase of 359,792 shares paying an average price per share of $2.81. These shares are held as treasury stock by the Company. On March 31, 2020, the Company announced the commencement of a tender offer to purchase up to 4,761,904 shares using funds available from cash and cash equivalents at a price of $2.10 per share. This tender offer expired on April 28, 2020 and 1,366,045 shares were repurchased. Shares repurchased were cancelled. For the year ended December 31, 2021, the Company did not make any repurchase of its common shares.

Equity Compensation Plan

Equity Compensation Plan	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Equity Compensation Plan	14. 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 % of the number of shares of Company’s common stock issued and outstanding at the time any award is granted. The Company’s Board of Directors may terminate the Plan at any time. As of December 31, 2021, a total of restricted shares had been granted under the 2007 Plan since the first grant in the third quarter of 2007 and restricted shares and options to purchase common shares have been granted under the Plan. Restricted shares On August 23, 2018, the Company granted 264,621 of non-vested non-executive On May 26, 2021, the Company granted 343,744 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, 2019, 2020 and 2021. Management has selected the accelerated method with respect to recognizing stock based compensation expense for restricted share awards with graded vesting because it considers this method to better match expense with benefits received. The stock based compensation expense for the vested and non-vested No non-vested Company’s non-vested restricted Number of Weighted average grant non-vested share Non-vested, January 1, — — Granted 343,744 2.99 Non-vested, December 31, 343,744 2.99 The total fair value of shares vested during the years ended December 31, 2019, 2020 and 2021 was $844,141, nil and nil, respectively, based on the closing share price at each vesting date. The remaining unrecognized compensation cost relating to the shares granted amounting to $ as of December 31, 2021, is expected to be recognized over the remaining period of years, according to the contractual terms of those non-vested share awards. Options to purchase common shares On M weighted-average assumptions were used in computing the fair value of the options granted: expected volatility of %; expected term of years; risk-free interest rate of %. 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 prior to the grant date. The Company had no stock option activity during the years ended December 31, 2019 and 2020. A summary of the Company’s non-vested December 31, 2021 Option shares Weighted-Average Outstanding – beginning of year — — Granted 250,000 2.99 Exercised — — Outstanding – end of year 250,000 2.99 Exercisable – end of year — No options vested during the year ended December 31, 2021. The remaining unrecognized compensation cost relating to the options granted amounting to $181,232 as of December 31, 2021, is expected to be recognized over the remaining period of 1.4 years, according to the contractual terms of those non-vested options. The stock based compensation expense for the vested and non-vested As at December 31, 2021, the intrinsic value of outstanding stock options was nil.

Earnings_(loss) per share

Earnings/(loss) per share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings/(loss) per share	15. 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, 2019 2020 2021 Numerator Net income/(loss) 2,093,124 11,984,485 (35,123,208 ) Less: Undistributed earnings allocated to non-vested (8,922 ) — — Net income/(loss) attributable to common shareholders, basic 2,084,202 11,984,485 (35,123,208 ) Denominator Weighted average number of shares outstanding, basic and diluted 39,800,434 38,357,893 37,858,437 Earnings/( 0.05 0.31 (0.93 ) Non-vested, The Company excluded the dilutive effect of 343,744 non-vested non-vested (2019 and 2020: nil).

Revenues

Revenues	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenues	16. Revenues The amounts in the accompanying consolidated statements of operations are analyzed as follows: Year ended December 31, 2019 2020 2021 Time charter revenues 97,249,537 101,837,425 105,966,167 Bareboat revenues 21,764,102 16,876,956 9,624,684 Voyage charter revenues 24,018,198 25,161,401 33,813,496 Other income 1,227,475 1,127,239 800,180 Total 144,259,312 145,003,021 150,204,527 The amount of revenue earned as demurrage relating to the Company’s voyage charters for the years ended December 31, 2019, 2020 and 2021 was $2.0 million, $2.4 million and $4.1 million, respectively and is included within “Voyage charter revenues” in the above table. As of December 31, 2020 and 2021, the Company recognized $309,608 and $298,984, 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, 2019, 2020 and 2021, revenues relating to undelivered performance obligations of the Company’s voyage charters amounted to $439,135, $1,353,290 and $1,789,720, respectively. The Company recognized these amounts as revenues in the first quarters of 2020 , 2021 2 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, 2021
Text Block [Abstract]
Vessel Operating Expenses	17. Vessel Operating Expenses The amounts in the accompanying consolidated statements of operations are analyzed as follows: Year ended December 31, Vessels’ Operating Expenses 2019 2020 2021 Crew wages and related costs 30,874,618 32,073,496 38,454,397 Insurance 2,162,523 1,889,041 2,196,444 Repairs and maintenance 5,677,033 6,590,006 7,282,481 Spares and consumable stores 7,783,902 7,990,022 9,123,975 Miscellaneous expenses 3,088,018 4,752,656 4,452,266 Total 49,586,094 53,295,221 61,509,563

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	18. 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, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	19. 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 personal injury and property casualty claims. Such claims, even if lacking merit, could result in the expenditure of significant financial and managerial resources. During 2020, our Aframax tanker “Stealth Berana” was arrested in relation to claims of the charterers of the vessel for alleged losses in connection with the redelivery of the vessel to the Company. The Company commenced arbitration in accordance with the provisions of the charter party agreement in respect of all disputes arising under the charter party agreement, including the claims of the charterers. The Company in order to release the vessel promptly from arrest, provided security for the claims of the charterers by way of a payment of $1,473,000 into an escrow account. In August 2021, the Company reached a settlement agreement with the charterers. Based on the settlement agreement, the funds held in the escrow account were released and the Company received the net amount of $765,031 in full and final settlement of the claims of the Company and the charterers including the liabilities of the Company due to the customer deposits (Note 10). • 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, 2021 amounted to $36,823,331 and $122,287, 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, 2021 amounted to $27,083,331 and $ • 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, 2021
Time charterin contracts [Abstract]
Leases - The Company as Lessee	20. Leases – The Company as Lessee Time charter-in For the years ended December 31, 2019 and 2020, the Company chartered in vessels to supplement its own fleet and employed them both on time charters and voyage charters. The time charter-in No charter-in contracts were entered into during the year ended December 31, 2021. The Company had one time charter-in The Company had entered into two time charter-in Office lease In January 2019, the Company renewed its contract to lease office space from a related party for a period until December 2020 at an amount of EUR 6,500 ($7,345) per month. In January 2021, the Company entered into a new agreement to lease office space from a related party for a period of two years at an amount of EUR 7,000 ($8,279) per month. The Company determined these office leases to be operating leases and recorded the related 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, December 31, Non current assets: Office leases Operating lease right-of-use $ — $ 104,168 $ — $ 104,168 Liabilities: Office leases Current portion of operating lease liabilities $ — $ 104,168 Lease liabilities - current portion $ — $ 104,168 The Operating lease right-of-use The table below presents the components of the Company’s lease expenses and sub-lease chartered-in Description Location in statement of operations 2019 2020 2021 Lease expense for chartered-in Charter hire expenses $ 4,708,988 — — Lease expense for chartered-in Charter hire expenses 1,560,000 318,606 — Total charter hire expenses 6,268,988 318,606 — Lease expense for office leases General and administrative expenses 87,192 90,121 97,726 Sub lease income from chartered-in Revenues 3,091,390 860,227 — * The sub-lease chartered-in chartered-in chartered-in The cash paid for operating leases with terms greater than 12 months for the years ended December 31, 2019, 2020 and 2021 amounted to $1,647,192, $408,727 and $97,726, respectively. The weighted average remaining lease term on our operating leases with terms 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, 2021: Year Office leases Total Operating Discount rate upon adoption 5.6 % 5.6 % 2022 (undiscounted lease payments) $ 107,520 $ 107,520 107,520 107,520 Present value of lease liability 104,168 104,168 Lease liabilities - short term 104,168 104,168 Total lease liabilities 104,168 104,168 Discount based on incremental borrowing rate (Difference between undiscounted lease payments and present value of lease liability) $ 3,352 $ 3,352

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	21. Subsequent Events As a result of the recent conflict in Ukraine, the EU, U.S. and other countries have imposed sanctions in response to Russian action. The extent to which this will impact the Company’s future results of operations and financial condition will depend on future developments, which are highly uncertain and cannot be predicted. Accordingly, an estimate of the impact cannot be made at this time.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation:
Use of Estimates	Use of Estimates: Actual
Other Comprehensive (Loss)/income	Other Comprehensive (Loss)/income:
Foreign Currency Translation	Foreign Currency Translation:
Cash and Cash Equivalents	Cash and Cash Equivalents:
Restricted Cash	Restricted Cash: non-current
Trade Receivables	Trade Receivables: un-collectible provision for doubtful accounts. No provision for doubtful accounts was required for any of the periods presented.
Claims Receivable	Claims Receivable:
Inventories	Inventories: first-in, first-out
Advances for vessels under construction	Advances for vessels under construction: on-site
Vessels Acquisitions	Vessels Acquisitions:
Impairment or Disposal of Long-lived Assets	Impairment or Disposal of Long-lived Assets: 360-10, 360-10”), dry-docking
Vessels' Depreciation	Vessels’ Depreciation:
Assets Held for Sale	Assets Held for Sale: completed sale within one year and (v) the vessels are being actively marketed for sale at a price that is reasonable in relation to their current fair value and actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. Vessels classified as held for sale are measured at the lower of their carrying amount or fair value less cost to sell. These vessels are not depreciated once they meet the criteria to be classified as held for sale. Furthermore, in the period a vessel meets the held for sale criteria in accordance with ASC 360-10,
Segment Reporting	Segment Reporting:
Accounting for Special Survey and Dry-docking Costs	Accounting for Special Survey and Dry-docking dry-docking incurred
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, which is generally payable in advance. Operating costs incurred for running the vessel such as crew costs, vessel insurance, repairs and maintenance and lubricants are paid for by the Company under time charter agreements. 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, and therefore do not fall under the scope of Accounting Standards Codification (“ASC”) 606 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 expenses and risk of operation. On implementation of ASC 842, 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 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 their services as directors and is included in General non-vested
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. 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. 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 as a component of “Loss on derivatives”. (ii) Other Derivatives he fair v
Investments in joint ventures	Investments in joint ventures: impairment
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 charter-in
Recent Accounting Pronouncements	Recent Accounting Pronouncements : 2021-01—Reference he

Basis of Presentation and Gen_2

Basis of Presentation and General Information (Tables)	12 Months Ended
	Dec. 31, 2021
Text Block [Abstract]
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	During 2019, 2020 and 2021, the following charterers accounted for 10% or more of the Company’s revenues. Year ended December 31, Charterer 2019 2020 2021 A 12 % 15 % — B 10 % — — C 10 % 10 % —
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, 2021
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 2019 2020 2021 Management fees Management fees – related party 5,730,910 5,599,351 5,831,900 Brokerage commissions Voyage expenses – related party 1,788,543 1,799,209 1,867,100 Superintendent fees Vessels’ operating expenses – related party 104,000 38,000 117,000 Crew management fees Vessels’ operating expenses – related party 862,500 912,500 948,750 Commissions - vessels sold Net loss on sale of vessels 109,000 54,000 81,000 Commissions - vessel held for sale Impairment loss — — 125,000 Executive compensation General and administrative expenses 1,118,491 994,840 1,028,386 Rental expense General and administrative expenses 87,192 90,121 97,726 December 31, Location in balance sheet 2019 2020 2021 Commissions - vessels purchased Vessels, net — 435,000 289,347 Supervision fees Advances for vessel under construction/Vessels, net — 210,970 236,521

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: December 31, 2020 2021 Bunkers 2,152,601 1,120,372 Lubricants 1,534,497 1,652,160 Total 3,687,098 2,772,532

Advances for Vessel Under Con_2

Advances for Vessel Under Construction and Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Summary of Advances for vessel under construction and acquisitions	For the years ended December 31, 2020 and 2021, the movement of the account, advances for vessel under construction and acquisitions was as follows: Balance, December 31, 2019 2,988,903 Advance for vessel under construction 2,891,283 Capitalized interest 168,344 Supervision fees (Note 3) 210,970 Other capitalized expenses 279,615 Balance, December 31, 2020 6,539,115 Advance for vessel under construction 23,152,125 Supervision fees (Note 3) 236,521 Commissions - vessels purchased (Note 3) 289,347 Capitalized interest 20,060 Other capitalized expenses 129,729 Transfer to vessels. Net (Note 6) (30,366,897 ) Balance, December 31, 2021 —

Vessels, net (Tables)

Vessels, net (Tables)	12 Months Ended
	Dec. 31, 2021
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 Net Book Balance, December 31, 2019 1,087,601,983 (252,449,580 ) 835,152,403 Additions 44,894,678 — 44,894,678 Impairment loss (14,511,735 ) 10,654,428 (3,857,307 ) Disposals (6,500,000 ) 100,378 (6,399,622 ) Depreciation for the year — (37,455,093 ) (37,455,093 ) Balance, December 31, 2020 1,111,484,926 (279,149,867 ) 832,335,059 Transfer from Advances for vessel under construction and acquisitions (Note 5) 30,366,897 — 30,366,897 Other additions 1,227,314 — 1,227,314 Impairment loss (169,553,060 ) 124,936,846 (44,616,214 ) Disposals (8,100,000 ) — (8,100,000 ) Transfer to Vessel held for sale (12,250,000 ) — (12,250,000 ) Spin-off (80,500,000 ) — (80,500,000 ) Depreciation for the year — (37,125,903 ) (37,125,903 ) Balance, December 31, 2021 872,676,077 (191,338,924 ) 681,337,153

Investments in Joint Ventures (

Investments in Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	A condensed summary of the financial information for equity accounted investments partially owned by the Company shown on a 100 December 31, 2020 Spacegas Financial Cannes Colorado Oil Frost MGC Inc. Current assets 2,163,484 2,359,816 1,267,542 1,126,697 10,831,800 5,096,668 Non-current 12,559,048 12,575,608 13,801,972 12,335,790 19,464,419 82,809,937 Current liabilities 1,118,776 1,491,243 1,440,769 2,688,747 2,575,067 8,315,433 Long-term liabilities 4,855,255 4,855,255 7,050,860 6,169,497 9,384,573 40,958,366 Revenues 3,222,037 3,481,799 2,764,359 2,704,455 6,866,426 18,409,814 Operating income/(loss) 451,895 935,869 (645,197 ) (817,717 ) 3,122,539 4,869,260 Net income/(loss) 246,616 728,428 (1,019,886 ) (1,155,342 ) 2,656,770 3,882,812 December 31, 2021 Spacegas Financial Cannes Colorado Oil Frost MGC Inc. Current assets 2,347,954 3,112,192 1,630,592 1,017,765 13,208,202 23,228,225 Non-current 11,900,116 11,924,795 13,071,670 11,870,528 18,532,414 56,221,031 Current liabilities 1,426,492 1,506,835 1,687,929 3,231,113 2,247,545 5,357,705 Long-term liabilities 4,178,256 4,178,256 6,307,812 5,519,327 8,008,092 22,799,849 Revenues 3,023,283 3,464,824 4,227,682 3,154,728 7,162,657 17,468,871 Operating income/(loss) 26,559 893,121 396,337 (216,091 ) 3,509,152 13,857,864 Net (loss)/income (105,179 ) 762,975 128,636 (466,393 ) 3,148,404 12,918,760

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	The amounts shown in the accompanying consolidated balance sheets are analyzed as follows: December 31, 2020 2021 Interest on long-term debt 1,887,414 1,883,321 Administrative expenses 209,553 210,930 Vessel operating and voyage expenses 1,676,532 1,748,628 Total 3,773,499 3,842,879

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Debt	Term Loans Drawn Amount December 31, 2020 2021 Issue Date/ Maturity Date December 14, 2018 November 10, 2021 14,094,184 9,694,184 — May 28, 2019 August 6, 2021 11,000,000 9,080,000 — August 6, 2019 August 6, 2021 27,675,000 18,600,000 — July 5, 2019 July 11, 2026 22,230,000 18,260,357 15,084,643 March 29, 2019 December 29, 2022 25,458,432 13,701,816 3,039,647 January 11, 2021 January 14, 2026 50,225,000 25,420,000 22,675,000 December 14, 2018 December 18, 2023 9,480,000 7,880,000 7,080,000 June 20, 2014 January 21, 2021 20,925,000 12,760,000 — August 6, 2019 August 6, 2021 67,200,000 43,635,000 — December 24, 2015 January 25, 2021 22,400,000 14,933,360 — January 19, 2021 January 21, 2028 43,800,000 14,218,750 40,731,975 July 29, 2014 July 7, 2023 25,350,000 14,259,375 12,146,875 December 7, 2017 November 10, 2021 22,275,000 14,010,000 — May 18, 2016 December 31, 2025 65,650,000 52,842,620 48,739,300 March 1, 2017 April 17, 2026 70,787,500 57,512,495 52,456,243 June 17, 2020 June 19, 2026 11,505,000 11,121,500 10,354,500 April 30, 2020 November 7, 2026 15,600,000 15,600,000 14,733,333 April 30, 2020 February 4, 2027 18,850,000 — 18,064,582 August 5, 2021 August 6, 2026 60,000,000 — 58,060,931 Total 353,529,457 303,167,029 Current portion of long-term debt 41,161,686 32,464,732 Current portion of long-term debt associated with vessel held for sale — 7,173,988 Long-term debt 312,367,771 263,528,309 Total debt 353,529,457 303,167,029 Current portion of deferred finance charges 613,794 628,113 Deferred finance charges non-current 1,118,450 1,567,334 Total deferred finance charges 1,732,244 2,195,447 Total debt 353,529,457 303,167,029 Less: Total deferred finance charges 1,732,244 2,195,447 Total debt, net of deferred finance charges 351,797,213 300,971,582 Less: Current portion of long-term debt, net of current portion of deferred finance charges 40,547,892 31,836,619 Less: Current portion of long-term debt, associated with vessel held for sale — 7,173,988 Long-term debt 311,249,321 261,960,975
Schedule of Maturities of Long-term Debt	The annual principal payments to be made, for the abovementioned loans, after December 31, 2021, and after taking into account the refinancing arrangements, are as follows: December 31, Amount 202 2 39,638,720 202 3 30,607,086 202 4 30,607,086 202 5 62,933,106 202 6 91,723,313 Thereafter 47,657,718 Total 303,167,029

Derivatives and Fair Value Di_2

Derivatives and Fair Value Disclosures (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2020 and 2021. Effective Termination Fixed Rate Floating Rate Fair Value Asset/ Notional Fair Value Asset/ Notional Swap 1 November 4, 2015 August 4, 2021 1.52 % 3 month U.S. dollar LIBOR $ (69,821 ) $ 7,109,375 — — Swap 2 December 3, 2015 September 3, 2021 1.55 % 3 month U.S. dollar LIBOR $ (71,626 ) $ 7,109,375 — — Swap 3 August 16, 2017 May 16, 2025 2.12 % 3 month U.S. dollar LIBOR $ (857,234 ) $ 12,695,750 $ (358,988 ) $ 11,680,250 Swap 4 March 12, 2018 December 11, 2022 2.74 % 3 month U.S. dollar LIBOR $ (598,572 ) $ 14,010,000 — — Swap 5 April 10, 2018 December 11, 2025 2.74 % 3 month U.S. dollar LIBOR $ (2,682,391 ) $ 27,452,000 $ (1,398,025 ) $ 25,380,000 Swap 6 February 16, 2019 February 16, 2024 2.89 % 3 month U.S. dollar LIBOR $ (961,267 ) $ 12,695,750 $ (486,439 ) $ 11,680,250 Swap 7 January 21, 2021 January 21, 2028 0.73 % 3 month U.S. dollar LIBOR — — $ (293,862 ) $ 13,210,750 Swap 8 January 21, 2021 January 21, 2028 0.73 % 3 month U.S. dollar LIBOR — — $ (292,709 ) $ 13,173,250 Swap 9 January 21, 2021 January 21, 2028 0.74 % 3 month U.S. dollar LIBOR — — $ (321,857 ) $ 14,347,975 Total $ (5,240,911 ) $ 81,072,250 $ (3,151,880 ) $ 89,472,475
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	Tabular disclosure of financial instruments is as follows: Derivatives designated as hedging instruments Balance Sheet Location December 31, 2020 2021 Asset Liability Asset Liability Interest Rate Swap Agreements Current liabilities — Fair value of derivatives — 141,447 — — Interest Rate Swap Agreements Non current liabilities — Fair value of derivatives — 5,099,464 — 3,151,880 Total derivatives designated as hedging instruments — 5,240,911 — 3,151,880
Schedule of Derivative Instruments, Gain (Loss)	The effect of derivative instruments on the consolidated statements of operations for the years ended December 31, 2019, 2020 and 2021 is as follows: Derivatives not designated as hedging instruments Location of Gain/(Loss) Year Ended December 31, 2019 2020 2021 Interest Rate Swap — Reclassification from OCI Loss on derivatives 84,966 60,954 265,610 Interest Rate Swap — Change in Fair Value Loss on derivatives (327,147 ) 7,186 — Interest Rate Swap — Realized income/(expense) Loss on derivatives 134,631 (119,116 ) (25,457 ) Total loss/(gain) on derivatives (107,550 ) (50,976 ) 240,153 Derivatives designated as hedging instruments Location of (Loss)/Gain Year Ended December 31, 2019 2020 2021 Interest Rate Swap — Realized Income/(Loss) Interest and finance costs 67,424 (1,190,400 ) (2,183,187 ) Total loss on derivatives 67,424 (1,190,400 ) (2,183,187 )
Schedule of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive loss included in the accompanying consolidated balance sheets consist of unrealized gain / (loss) on cash flow hedges and are analyzed as follows: Unrealized Gain / Balance, January 1, 2019 673,979 Effective portion of changes in fair value of interest swap contracts (2,848,056 ) Reclassification adjustment (84,966 ) Balance, December 31, 2019 (2,259,043 ) Effective portion of changes in fair value of interest swap contracts (2,632,826 ) Reclassification adjustment (60,954 ) Balance, December 31, 2020 (4,952,823 ) Effective portion of changes in fair value of interest swap contracts 2,114,488 Reclassification adjustment (265,610 ) Balance, December 31, 2021 (3,103,945 )
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, 2020: Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Assets/(Liabilities): Interest Rate Swap Agreements (5,240,911 ) — (5,240,911 ) — Total (5,240,911 ) — (5,240,911 ) — 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, 2021: Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Assets/(Liabilities): Interest Rate Swap Agreements (3,151,880 ) — (3,151,880 ) — Total (3,151,880 ) — (3,151,880 ) —
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 Fair Value Measurements Using Description Quoted Prices Significant Significant Impairment Long-lived assets held and used 3,000,000 — 3,000,000 — (305,607 ) Total 3,000,000 — 3,000,000 — (305,607) As a result of the impairment analysis performed as of June 30, 2020, one of the Company’s vessels (held and used) was written down to its estimated fair value as determined by the Company based on vessel valuations, obtained from independent third party shipbrokers, which are mainly based on recent sales and purchase transactions of similar vessels, resulting in an impairment charge of $305,607. Depreciation amounting to $170,884 was recorded in the period from July 1, 2020 to December 31, 2020 and the vessel was presented at its new deemed cost less depreciation of $2,829,116 in the accompanying consolidated balance sheet as of December 31, 2020. Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Impairment Long-lived assets held and used 3,500,000 — 3,500,000 — (714,895 ) Total 3,500,000 — 3,500,000 — (714,895) As a result of the impairment analysis performed as of December 31, 2020, one of the Company’s vessels (held and used) was written down to its estimated fair value as determined by the Company based on vessel valuations, obtained from independent third party shipbrokers, which are mainly based on recent sales and purchase transactions of similar vessels, resulting in an impairment charge of $714,895. Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Impairment Long-lived assets held for sale 12,500,000 — 12,500,000 — (1,125,243 ) Long-lived assets held and used 3,250,000 — 3,250,000 — (49,977 ) Total 15,750,000 — 15,750,000 — (1,175,220) The vessel Gas Monarch (held and used) was written down to its estimated fair value of $3,250,000 as of June 30, 2021, as determined by the Company based on vessel valuations, obtained from independent third party shipbrokers, which are mainly based on recent sales and purchase transactions of similar vessels, resulting in an impairment charge of $49,977. Depreciation amounting to $195,858 was recorded in the period from July 1, 2021 to December 31, 2021. As of December 31, 2021, the vessel was written down to its estimated fair value of $3,000,000, as determined by the Company based on vessel valuations, obtained from independent third party shipbrokers, which are mainly based on recent sales and purchase transactions of similar vessels, resulting in an impairment charge of $54,142. 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, which sale remains subject to customary conditions. Fair Value Fair Value Measurements Using Description Quoted Prices Significant Significant Impairment Long-lived assets held and used 12,650,000 — 12,650,000 — (1,333,950 ) Total 12,650,000 — 12,650,000 — (1,333,950)

Equity Compensation Plan (Table

Equity Compensation Plan (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Summary of Nonvested Restricted Shares	No non-vested Company’s non-vested restricted Number of Weighted average grant non-vested share Non-vested, January 1, — — Granted 343,744 2.99 Non-vested, December 31, 343,744 2.99
Summary of the Company's non-vested stock option activity	The Company had no stock option activity during the years ended December 31, 2019 and 2020. A summary of the Company’s non-vested December 31, 2021 Option shares Weighted-Average Outstanding – beginning of year — — Granted 250,000 2.99 Exercised — — Outstanding – end of year 250,000 2.99 Exercisable – end of year —

Earnings_(loss) per share (Tabl

Earnings/(loss) per share (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2019 2020 2021 Numerator Net income/(loss) 2,093,124 11,984,485 (35,123,208 ) Less: Undistributed earnings allocated to non-vested (8,922 ) — — Net income/(loss) attributable to common shareholders, basic 2,084,202 11,984,485 (35,123,208 ) Denominator Weighted average number of shares outstanding, basic and diluted 39,800,434 38,357,893 37,858,437 Earnings/( 0.05 0.31 (0.93 )

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2019 2020 2021 Time charter revenues 97,249,537 101,837,425 105,966,167 Bareboat revenues 21,764,102 16,876,956 9,624,684 Voyage charter revenues 24,018,198 25,161,401 33,813,496 Other income 1,227,475 1,127,239 800,180 Total 144,259,312 145,003,021 150,204,527

Vessel Operating Expenses (Tabl

Vessel Operating Expenses (Tables)	12 Months Ended
	Dec. 31, 2021
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 2019 2020 2021 Crew wages and related costs 30,874,618 32,073,496 38,454,397 Insurance 2,162,523 1,889,041 2,196,444 Repairs and maintenance 5,677,033 6,590,006 7,282,481 Spares and consumable stores 7,783,902 7,990,022 9,123,975 Miscellaneous expenses 3,088,018 4,752,656 4,452,266 Total 49,586,094 53,295,221 61,509,563

Leases - The Company as Lessee

Leases - The Company as Lessee (Tables)	12 Months Ended
	Dec. 31, 2021
Time charterin contracts [Abstract]
Schedule of operating leases	Operating lease right-of-use Description Location in balance sheet December 31, December 31, Non current assets: Office leases Operating lease right-of-use $ — $ 104,168 $ — $ 104,168 Liabilities: Office leases Current portion of operating lease liabilities $ — $ 104,168 Lease liabilities - current portion $ — $ 104,168
Schedule of company's lease expenses and sub-lease income	The table below presents the components of the Company’s lease expenses and sub-lease chartered-in Description Location in statement of operations 2019 2020 2021 Lease expense for chartered-in Charter hire expenses $ 4,708,988 — — Lease expense for chartered-in Charter hire expenses 1,560,000 318,606 — Total charter hire expenses 6,268,988 318,606 — Lease expense for office leases General and administrative expenses 87,192 90,121 97,726 Sub lease income from chartered-in Revenues 3,091,390 860,227 — * The sub-lease chartered-in chartered-in chartered-in
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, 2021: Year Office leases Total Operating Discount rate upon adoption 5.6 % 5.6 % 2022 (undiscounted lease payments) $ 107,520 $ 107,520 107,520 107,520 Present value of lease liability 104,168 104,168 Lease liabilities - short term 104,168 104,168 Total lease liabilities 104,168 104,168 Discount based on incremental borrowing rate (Difference between undiscounted lease payments and present value of lease liability) $ 3,352 $ 3,352

Basis of Presentation and Gen_3

Basis of Presentation and General Information - Concentration Risk by Charterer (Details) - Sales Revenue, Net [Member] - Product Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Charterer A [Member]
Concentration risk, percentage	15.00%	12.00%
Charterer B [Member]
Concentration risk, percentage		10.00%
Charterer C [Member]
Concentration risk, percentage	10.00%	10.00%

Basis of Presentation and Gen_4

Basis of Presentation and General Information - Assets Liabilities And Stock holders Equity (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Distribution of Assets, Liabilities and Stockholders' Equity [Line Items]
Inventories	$ 2,772,532	$ 3,687,098
Advances and prepayments	637,881	782,125
Vessels, net (after impairment of $40,185,873)	681,337,153	$ 832,335,059	$ 835,152,403
Deferred income	(76,949)
Imperial [Member]
Distribution of Assets, Liabilities and Stockholders' Equity [Line Items]
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

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 [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, 2021USD ($)Segment	Dec. 31, 2020USD ($)
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts receivable | $	$ 0	$ 0
Disposal group, including discontinued operation | $	$ 0	$ 0
Number of reportable segments | Segment	1
Number of operating segments | Segment	1
LPG [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	30 years
Product carriers [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	25 years

Transactions With Related Par_3

Transactions With Related Parties - Additional Information (Detail)	May 18, 2021USD ($)	Jun. 05, 2020USD ($)	Apr. 01, 2020EUR (€)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Feb. 13, 2020
Related Party Transaction [Line Items]
Management fee, per day, per vessel				$ 280
Due to related parties, current, total				$ 1,491,705	$ 4,659,861
Equity Method Investment Ownership Percentage				50.10%		50.10%		51.00%
Proceeds From Unconsolidated Joint Ventures And Subsidiaries Classified As Financing Activities				$ 0	1,841,380	$ 4,958,250
Eco Alice [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Purchases from Related Party		$ 24,000,000
Eco Texiana [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Purchases from Related Party		$ 19,500,000
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				1.00%
Due to related parties, current, total				$ 63,767	3,701,903
Proceeds From Unconsolidated Joint Ventures And Subsidiaries Classified As Financing Activities				1,136,682	$ 957,958
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
Brave [Member]
Related Party Transaction [Line Items]
Equity Method Investment Ownership Percentage	51.00%
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	51.00%
Brave [Member] | Capitalized Construction Supervision Fees [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party | €			€ 390,000
Imperial [Member]
Related Party Transaction [Line Items]
Payable				$ 355,023

Transactions with Related Par_4

Transactions with Related Parties - Summary of charged by our related parties (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Commissions [Member]
Related Party Transaction [Line Items]
Due from Related Parties	$ 289,347	$ 435,000
Supervision Fees [Member]
Related Party Transaction [Line Items]
Due from Related Parties	236,521	210,970
Management Fees [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	5,831,900	5,599,351	$ 5,730,910
Brokerage Commissions [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	1,867,100	1,799,209	1,788,543
Superintendent Fees [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	117,000	38,000	104,000
Crew Management Fees [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	948,750	912,500	862,500
Net Loss On Sale Of Vessels [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	81,000	54,000	109,000
Impairment Loss [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction			0
Impairment Loss [Member] | Commissions [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	125,000	0
Executive Compensation [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	1,028,386	994,840	1,118,491
Rental Expense [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	$ 97,726	$ 90,121	$ 87,192

Inventories - Schedule of Inven

Inventories - Schedule of Inventory, Current (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Bunkers	$ 1,120,372	$ 2,152,601
Lubricants	1,652,160	1,534,497
Total	$ 2,772,532	$ 3,687,098

Advances for Vessel Under Con_3

Advances for Vessel Under Construction and Acquisitions - Additional Information (Detail) - USD ($)	Dec. 31, 2021	Feb. 05, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments in and Advances to Affiliates [Line Items]
Advances for vessel under construction and acquisitions	$ 0		$ 6,539,115	$ 2,988,903
Eco Blizzard [Member]
Investments in and Advances to Affiliates [Line Items]
Advances for vessel under construction and acquisitions		$ 23,152,125

Advances for Vessel Under Con_4

Advances for Vessel Under Construction and Acquisitions - Summary of Advances for Vessels Under Construction and Acquisitions (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Beginning balance	$ 6,539,115	$ 2,988,903
Advance for vessel under construction	23,152,125	2,891,283
Capitalized interest	20,060	168,344
Supervision fees	236,521	210,970
Commissions - vessels purchased	289,347
Other Capitalized Expenses	129,729	279,615
Transfer to vessels. Net	(30,366,897)
Ending balance	$ 0	$ 6,539,115

Vessels, Net - Summary of Vesse

Vessels, Net - Summary of Vessels, Net (Detail) - USD ($)	6 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Vessel cost, Balance			$ 1,111,484,926	$ 1,087,601,983
Vessel cost, Additions				44,894,678
Vessel cost, Impairment loss			(169,553,060)	(14,511,735)
Vessel cost, Disposals			(8,100,000)	(6,500,000)
Vessel cost, Transfer from Advances for vessel under construction and acquisitions			30,366,897
Vessel cost, Other additions			1,227,314
Vessel cost, Transfer to Vessel held for sale			(12,250,000)
Vessel cost, Spin-off of tankers			(80,500,000)
Vessel cost, Balance	$ 872,676,077	$ 1,111,484,926	872,676,077	1,111,484,926	$ 1,087,601,983
Accumulated Depreciation, Balance			(279,149,867)	(252,449,580)
Accumulated Depreciation, Impairment loss			124,936,846	10,654,428
Accumulated Depreciation, Disposals			0	(100,378)
Accumulated Depreciation, Depreciation for the year			(37,125,903)	(37,455,093)
Accumulated Depreciation, Balance	(191,338,924)	(279,149,867)	(191,338,924)	(279,149,867)	(252,449,580)
Net Book Value, Balance			832,335,059	835,152,403
Net Book Value, Additions				44,894,678
Net Book Value, Impairment loss			(44,616,214)	(3,857,307)	(993,916)
Net Book Value, Disposals			(8,100,000)	(6,399,622)
Net Book Value, Transfer from Advances for vessel under construction and acquisitions			30,366,897
Net Book Value, Other additions			1,227,314
Net Book Value, Transfer to Vessel held for sale			(12,250,000)
Net Book Value, Spin-off of tankers			(80,500,000)
Net Book Value, Depreciation for the year	(195,858)	(170,884)	(37,125,903)	(37,455,093)	(37,693,733)
Net Book Value, Balance	$ 681,337,153	$ 832,335,059	$ 681,337,153	$ 832,335,059	$ 835,152,403

Vessels, Net - Additional Infor

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

Dec. 31, 2021

Jun. 30, 2021

Nov. 30, 2020

Oct. 31, 2020

Jun. 30, 2020

Jun. 30, 2021

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Feb. 14, 2022

Jul. 28, 2021

May 31, 2021

Oct. 30, 2020

Sep. 30, 2019

Mar. 31, 2019

Property, Plant and Equipment [Line Items]

Impairment of long-lived assets held-for-use

$ 49,977

$ 54,142

Net (gain)/loss on sale of vessels

304,210

$ 1,134,854

$ 485,516

impairment charge

$ 1,333,950

$ 305,607

714,895

Selling price

8,100,000

6,500,000

Six Vessels [Member]

Property, Plant and Equipment [Line Items]

Debt instrument, collateral amount

$ 629,691,705

629,691,705

36 Vessels [Member]

Property, Plant and Equipment [Line Items]

Debt instrument, collateral amount

798,061,787

Impairment Loss [Member]

Property, Plant and Equipment [Line Items]

Impairment of long-lived assets held-for-use

$ 653,079

$ 1,971,148

1,333,950

714,895

993,916

Net Loss On Sale Of Vessels [Member]

Property, Plant and Equipment [Line Items]

Gain (Loss) on Disposition of Assets

$ 1,134,854

Gas Defiance, Gas Shuriken, Gas Haralambos and Eco Lucidity [Member] | Third party investor [Member]

Property, Plant and Equipment [Line Items]

Interest acquired on joint venture agreements

49.90%

Gas Ethereal [Member]

Property, Plant and Equipment [Line Items]

Disposal group, including discontinued operation, consideration

$ 10,900,000

Gas Sincerity Gas Texiana [Member]

Property, Plant and Equipment [Line Items]

Net (gain)/loss on sale of vessels

$ 485,516

Gas Nemesis II [Member]

Property, Plant and Equipment [Line Items]

impairment charge

$ 2,489,333

Due From unaffiliated third Parties

$ 4,500,000

Vessel Delivery Date

Nov. 2, 2020

Gas Pasha [Member]

Property, Plant and Equipment [Line Items]

Due From unaffiliated third Parties

$ 900,000

Vessel Delivery Date

Dec. 7, 2020

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

Selling price

12,500,000

Selling expense

250,000

Gas Imperiale [Member]

Property, Plant and Equipment [Line Items]

Disposal group, including discontinued operation, consideration

$ 9,650,000

$ 8,100,000

Impairment of long-lived assets held-for-use

9,650,000

Gain (Loss) on Disposition of Assets

$ 304,210

Investments in Joint Ventures -

Investments in Joint Ventures - Additional Information (Detail)	May 07, 2020USD ($)	Feb. 13, 2020USD ($)	Dec. 03, 2019USD ($)	Jul. 09, 2019USD ($)	Mar. 31, 2021USD ($)	Dec. 31, 2019USD ($)Vessel	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	May 22, 2019USD ($)
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage		51.00%				50.10%	50.10%
Equity Method Investments							$ 53,323,032	$ 43,177,657
Funds contributed for working capital purposes		$ 41,998,500				$ 10,571,100
Proceeds From Equity Method Investee	$ 24,276,000		$ 2,505,000	$ 7,363,147
Equity Method Investment, Aggregate Cost		$ 80,550,000					$ 1,950,000
Frost Investments Corp Inc [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage						50.10%			49.90%
Equity Method Investments									$ 20,400,000
Proceeds From Equity Method Investee			$ 5,000,000
MGC Aggressive Holdings Inc [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage							49.00%
Proceeds From Equity Method Investee	$ 47,600,000
MGC Aggressive Holdings Inc [Member] | Gaschem Hamburg [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Sale of Productive Assets					$ 34,000,000
Corporate Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds From Equity Method Investee				$ 14,696,900
Co-venturer [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage						49.90%
Equity Method Investment minority interest						$ 20,720,975
Number of joint ventures | Vessel						4
Equity Method Investments						$ 20,804,025
Co-venturer [Member] | Frost Investments Corp Inc [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage									50.10%
Equity Method Investee [Member]
Schedule of Equity Method Investments [Line Items]
Funds contributed for working capital purposes						$ 751,500

Investments in Joint Ventures_2

Investments in Joint Ventures - Summary of the Financial Information for Equity Accounted Investments (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Current assets	$ 51,706,378	$ 48,053,524
Non-current assets	746,961,964	895,952,783
Current liabilities	58,707,768	63,061,107
Long-term liabilities	265,189,804	316,348,785
Revenues	150,204,527	145,003,021	$ 144,259,312
Operating income/(loss)	(31,015,052)	23,341,950	21,709,008
Net income/(loss)	(35,123,208)	11,984,485	$ 2,093,124
Space Gas Inc [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	2,347,954	2,163,484
Non-current assets	11,900,116	12,559,048
Current liabilities	1,426,492	1,118,776
Long-term liabilities	4,178,256	4,855,255
Revenues	3,023,283	3,222,037
Operating income/(loss)	26,559	451,895
Net income/(loss)	(105,179)	246,616
Financial Power Inc [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	3,112,192	2,359,816
Non-current assets	11,924,795	12,575,608
Current liabilities	1,506,835	1,491,243
Long-term liabilities	4,178,256	4,855,255
Revenues	3,464,824	3,481,799
Operating income/(loss)	893,121	935,869
Net income/(loss)	762,975	728,428
Cannes View Inc [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	1,630,592	1,267,542
Non-current assets	13,071,670	13,801,972
Current liabilities	1,687,929	1,440,769
Long-term liabilities	6,307,812	7,050,860
Revenues	4,227,682	2,764,359
Operating income/(loss)	396,337	(645,197)
Net income/(loss)	128,636	(1,019,886)
ColoradoOiland Gas Inc [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	1,017,765	1,126,697
Non-current assets	11,870,528	12,335,790
Current liabilities	3,231,113	2,688,747
Long-term liabilities	5,519,327	6,169,497
Revenues	3,154,728	2,704,455
Operating income/(loss)	(216,091)	(817,717)
Net income/(loss)	(466,393)	(1,155,342)
Frost Investments Corp Inc [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	13,208,202	10,831,800
Non-current assets	18,532,414	19,464,419
Current liabilities	2,247,545	2,575,067
Long-term liabilities	8,008,092	9,384,573
Revenues	7,162,657	6,866,426
Operating income/(loss)	3,509,152	3,122,539
Net income/(loss)	3,148,404	2,656,770
MGC Aggressive Holdings Inc [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	23,228,225	5,096,668
Non-current assets	56,221,031	82,809,937
Current liabilities	5,357,705	8,315,433
Long-term liabilities	22,799,849	40,958,366
Revenues	17,468,871	18,409,814
Operating income/(loss)	13,857,864	4,869,260
Net income/(loss)	$ 12,918,760	$ 3,882,812

Accrued Liabilities - Schedule

Accrued Liabilities - Schedule of Accrued Liabilities (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Accrued Liabilities [Abstract]
Interest on long-term debt	$ 1,883,321	$ 1,887,414
Administrative expenses	210,930	209,553
Vessel operating and voyage expenses	1,748,628	1,676,532
Total	$ 3,842,879	$ 3,773,499

Deferred Income - Additional In

Deferred Income - Additional Information (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current	$ 5,666,285	$ 2,995,657
Time and Bareboat Deferred Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current	$ 5,743,234	$ 2,995,657

Customer Deposits - Additional

Customer Deposits - Additional Information (Detail) - USD ($)	May 30, 2019	Mar. 07, 2018	Oct. 12, 2015	Feb. 25, 2015	Dec. 31, 2021
Spike [Member]
Deposits [Line Items]
Proceeds from deposits from customers				$ 1,820,700
Repayment of deposits from customers		$ 600,000
Deposits from customers kept as guarantee					$ 1,220,700
Navig8 Faith [Member]
Deposits [Line Items]
Proceeds from deposits from customers			$ 736,000
Repayment of deposits from customers	$ 368,000
Deposits from customers kept as guarantee	$ 368,000

Long-term Debt - Schedule of De

Long-term Debt - Schedule of Debt (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Jan. 22, 2022	Dec. 31, 2020
Debt Instrument [Line Items]
Term Loans	$ 303,167,029		$ 353,529,457
Current portion of long-term debt associated with vessel held for sale	7,173,988		0
Current portion of deferred finance charges associated with vessels held for sale	32,464,732		41,161,686
Long term debt	263,528,309		312,367,771
Total debt	303,167,029		353,529,457
Current portion of deferred finance charges	628,113		613,794
Deferred finance charges non-current	1,567,334		1,118,450
Total deferred finance charges	2,195,447		1,732,244
Total debt, net of deferred finance charges	300,971,582		351,797,213
Less: Current portion of long-term debt, net of current portion of deferred finance charges	31,836,619		40,547,892
Long-term debt	261,960,975		311,249,321
Less: Current portion of long-term debt, associated with vessel held for sale	$ 7,173,988		0
Term Loan 1 [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 10, 2021
Drawn Amount	$ 14,094,184
Term Loans	$ 0		9,694,184
Term Loan 4 [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 6, 2021
Drawn Amount	$ 11,000,000
Term Loans	$ 0		9,080,000
Term Loan 2 [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 6, 2021
Drawn Amount	$ 27,675,000
Term Loans	$ 0		18,600,000
Term Loan 20 [Member]
Debt Instrument [Line Items]
Maturity Date	Jul. 11, 2026
Drawn Amount	$ 22,230,000
Term Loans	$ 15,084,643		18,260,357
Term Loan 21 [Member]
Debt Instrument [Line Items]
Maturity Date	Dec. 29, 2022
Drawn Amount	$ 25,458,432
Term Loans	$ 3,039,647		13,701,816
Term Loan 3 [Member]
Debt Instrument [Line Items]
Maturity Date	Jan. 14, 2026
Drawn Amount	$ 50,225,000		25,420,000
Term Loans	$ 22,675,000
Term Loan 5 [Member]
Debt Instrument [Line Items]
Maturity Date	Dec. 18, 2023
Drawn Amount	$ 9,480,000
Term Loans	$ 7,080,000		7,880,000
Term Loan 6 [Member]
Debt Instrument [Line Items]
Maturity Date	Jan. 21, 2021
Drawn Amount	$ 20,925,000
Term Loans	$ 0		12,760,000
Term Loan 22 [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 6, 2021
Drawn Amount	$ 67,200,000
Term Loans	$ 0		43,635,000
Term Loan 23 [Member]
Debt Instrument [Line Items]
Maturity Date	Jan. 25, 2021
Drawn Amount	$ 22,400,000
Term Loans	$ 0		14,933,360
Term Loan 24 [Member]
Debt Instrument [Line Items]
Maturity Date	Jan. 21, 2028
Drawn Amount	$ 43,800,000	$ 40,731,975	14,218,750
Term Loan 10 [Member]
Debt Instrument [Line Items]
Maturity Date	Jul. 7, 2023
Drawn Amount	$ 25,350,000
Term Loans	$ 12,146,875		14,259,375
Term Loan 7 [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 10, 2021
Drawn Amount	$ 22,275,000
Term Loans	$ 0		14,010,000
Term Loan 8 [Member]
Debt Instrument [Line Items]
Maturity Date	Dec. 31, 2025
Drawn Amount	$ 65,650,000
Term Loans	$ 48,739,300		52,842,620
Term Loan 9 [Member]
Debt Instrument [Line Items]
Maturity Date	Apr. 17, 2026
Drawn Amount	$ 70,787,500
Term Loans	$ 52,456,243		57,512,495
Term Loan 11 [Member]
Debt Instrument [Line Items]
Maturity Date	Jun. 19, 2026
Drawn Amount	$ 11,505,000
Term Loans	$ 10,354,500		11,121,500
Term Loan 12 [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 7, 2026
Drawn Amount	$ 15,600,000
Term Loans	$ 14,733,333		15,600,000
Term Loan 13 [Member]
Debt Instrument [Line Items]
Maturity Date	Feb. 4, 2027
Drawn Amount	$ 18,850,000
Term Loans	$ 18,064,582		0
Term Loan 14 [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 6, 2026
Drawn Amount	$ 60,000,000
Term Loans	$ 58,060,931		$ 0

Long-term Debt - Additional Inf

Long-term Debt - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021USD ($)DerivativeInstrument	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Jan. 22, 2022USD ($)
Debt Instrument [Line Items]
Restricted cash	$ 2,198,775	$ 1,308,971	$ 1,589,768
Term loan financial covenants, cash requirement	12,197,611
Amortization of debt issuance costs	$ 1,157,804	$ 698,364	$ 885,191
Debt,weighted average interest rate	2.88%	3.58%	4.91%
Interest expense, debt, total	$ 8,684,097	$ 12,116,941	$ 19,999,902
Interest costs capitalized	20,060	$ 168,344	$ 97,620
Long-term Debt, Gross	2,679,214
Outstanding Balance Of Loan	$ 44,666,018
Debt instrument Payment terms	24
Subsequent Event [Member]
Debt Instrument [Line Items]
Drawn Amount				$ 59,400,000
Maximum [Member]
Debt Instrument [Line Items]
Value to term loan ratio	135.00%
Percentage of total debt to total market value adjusted assets	80.00%
Percentage of dividends paid to free cash flow	50.00%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.00%
Minimum [Member]
Debt Instrument [Line Items]
Value to term loan ratio	120.00%
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	2.00%

Long-term Debt - Schedule of Ma

Long-term Debt - Schedule of Maturities of Long-term Debt (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Maturities of Long-term Debt [Abstract]
2022	$ 39,638,720
2023	30,607,086
2024	30,607,086
2025	62,933,106
2026	91,723,313
Thereafter	47,657,718
Total	$ 303,167,029	$ 353,529,457

Derivatives and Fair Value Di_3

Derivatives and Fair Value Disclosures - Additional Information (Detail) - USD ($)	Dec. 31, 2021	Jun. 30, 2020	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 89,472,475		$ 81,072,250
Impairment of Long-Lived Assets to be Disposed of	1,333,950	$ 305,607	714,895
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 89,472,475		$ 81,072,250

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, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Fair Value Asset/(Liability)	$ (3,151,880)	$ (5,240,911)
Derivative, notional amount	$ 89,472,475	81,072,250
Swap 1
Derivatives, Fair Value [Line Items]
Effective Date	Nov. 4, 2015
Termination Date	Aug. 4, 2021
Fixed Rate (Company Pays)	1.52%
Floating Rate(Company Receives)	3 month U.S. dollar LIBOR
Fair Value Asset/(Liability)		(69,821)
Derivative, notional amount		7,109,375
Swap 2
Derivatives, Fair Value [Line Items]
Effective Date	Dec. 3, 2015
Termination Date	Sep. 3, 2021
Fixed Rate (Company Pays)	1.55%
Floating Rate(Company Receives)	3 month U.S. dollar LIBOR
Fair Value Asset/(Liability)		(71,626)
Derivative, notional amount		7,109,375
Swap 3
Derivatives, Fair Value [Line Items]
Effective Date	Aug. 16, 2017
Termination Date	May 16, 2025
Fixed Rate (Company Pays)	2.12%
Floating Rate(Company Receives)	3 month U.S. dollar LIBOR
Fair Value Asset/(Liability)	$ (358,988)	(857,234)
Derivative, notional amount	$ 11,680,250	12,695,750
Swap 4
Derivatives, Fair Value [Line Items]
Effective Date	Mar. 12, 2018
Termination Date	Dec. 11, 2022
Fixed Rate (Company Pays)	2.74%
Floating Rate(Company Receives)	3 month U.S. dollar LIBOR
Fair Value Asset/(Liability)	$ 0	(598,572)
Derivative, notional amount	$ 0	14,010,000
Swap 5
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 LIBOR
Fair Value Asset/(Liability)	$ (1,398,025)	(2,682,391)
Derivative, notional amount	$ 25,380,000	27,452,000
Swap 6
Derivatives, Fair Value [Line Items]
Effective Date	Feb. 16, 2019
Termination Date	Feb. 16, 2024
Fixed Rate (Company Pays)	2.89%
Floating Rate(Company Receives)	3 month U.S. dollar LIBOR
Fair Value Asset/(Liability)	$ (486,439)	(961,267)
Derivative, notional amount	$ 11,680,250	12,695,750
Swap 7
Derivatives, Fair Value [Line Items]
Effective Date	Jan. 21, 2021
Termination Date	Jan. 21, 2028
Fixed Rate (Company Pays)	0.73%
Floating Rate(Company Receives)	3 month U.S. dollar LIBOR
Fair Value Asset/(Liability)	$ (293,862)	0
Derivative, notional amount	$ 13,210,750	0
Swap 8
Derivatives, Fair Value [Line Items]
Effective Date	Jan. 21, 2021
Termination Date	Jan. 21, 2028
Fixed Rate (Company Pays)	0.73%
Floating Rate(Company Receives)	3 month U.S. dollar LIBOR
Fair Value Asset/(Liability)	$ (292,709)	0
Derivative, notional amount	$ 13,173,250	0
Swap 9
Derivatives, Fair Value [Line Items]
Effective Date	Jan. 21, 2021
Termination Date	Jan. 21, 2028
Fixed Rate (Company Pays)	0.74%
Floating Rate(Company Receives)	3 month U.S. dollar LIBOR
Fair Value Asset/(Liability)	$ (321,857)	0
Derivative, notional amount	$ 14,347,975	$ 0

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, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Derivative liabilities non-current	$ 3,151,880	$ 5,099,464
Derivative liabilities current		141,447
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	3,151,880	5,240,911
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities non-current	$ 3,151,880	5,099,464
Derivative liabilities current		$ 141,447

Derivatives and Fair Value Di_6

Derivatives and Fair Value Disclosures - Schedule of Derivative Instruments, Gain (Loss) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Swap — Income (loss) Reclassification from OCI	$ (265,610)	$ (60,954)	$ (84,966)
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total loss on derivatives	240,153	(50,976)	(107,550)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total loss on derivatives	(2,183,187)	(1,190,400)	67,424
Interest Rate Swap [Member] | Loss On Derivatives [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Swap — Income (loss) Reclassification from OCI	265,610	60,954	84,966
Interest Rate Swap — Change in Fair Value		7,186	(327,147)
Interest Rate Swap — Realized income	(25,457)	(119,116)	134,631
Interest Rate Swap [Member] | Loss On Derivatives [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Swap — Income (loss) Reclassification from OCI	$ (2,183,187)	$ (1,190,400)	$ 67,424

Derivatives and Fair Value Di_7

Derivatives and Fair Value Disclosures - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (4,952,823)
Reclassification adjustment	(265,610)	$ (60,954)	$ (84,966)
Ending balance	(3,103,945)	(4,952,823)
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(4,952,823)	(2,259,043)	673,979
Effective portion of changes in fair value of interest swap contracts	2,114,488	(2,632,826)	(2,848,056)
Reclassification adjustment	(265,610)	(60,954)	(84,966)
Ending balance	$ (3,103,945)	$ (4,952,823)	$ (2,259,043)

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, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fail value measurement	$ (3,151,880)	$ (5,240,911)
Interest Rate Swap 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fail value measurement	(3,151,880)	(5,240,911)
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fail value measurement	(3,151,880)	(5,240,911)
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	$ (3,151,880)	$ (5,240,911)

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 ($)	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets held and used	$ 3,250,000	$ 3,250,000		$ 3,000,000
Long-lived assets held and used	(49,977)			(54,142)
Total				(44,616,214)	$ (3,857,307)	$ (993,916)
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets held and used	3,250,000	3,250,000			3,500,000
Long-lived assets held for sale	12,500,000	12,500,000	$ 3,000,000	12,650,000
Total	15,750,000	15,750,000	3,000,000	12,650,000	3,500,000
Long-lived assets held and used	(49,977)	(1,125,243)	(305,607)	(1,333,950)	(714,895)
Total		(1,175,220)	(305,607)	(1,333,950)	(714,895)
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 and used	3,250,000	3,250,000			3,500,000
Long-lived assets held for sale	12,500,000	12,500,000	3,000,000	12,650,000
Total	$ 15,750,000	$ 15,750,000	$ 3,000,000	$ 12,650,000	$ 3,500,000

Derivatives and Fair Value D_10

Derivatives and Fair Value Disclosures - Additional Information - 2 (Detail) - USD ($)	Dec. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Apr. 19, 2022
Derivatives, Fair Value [Line Items]
Long-lived assets held-for-use, fair value disclosure	$ 3,000,000	$ 3,250,000		$ 3,000,000		$ 3,000,000
Depreciation, total				195,858	$ 170,884	37,125,903	$ 37,455,093	$ 37,693,733
Impairment of long-lived assets held-for-use		49,977				54,142
Impairment of long-lived assets to be disposed of	1,333,950		$ 305,607				714,895
Property, Plant and Equipment, Net	681,337,153			681,337,153	832,335,059	681,337,153	832,335,059	$ 835,152,403
Gas Monarch [Member] | Subsequent Event [Member]
Derivatives, Fair Value [Line Items]
Disposal group, including discontinued operation, consideration									$ 2,375,000
Gas Pasha And Gas Evoluzione [Member]
Derivatives, Fair Value [Line Items]
Property, Plant and Equipment, Net					$ 2,829,116		$ 2,829,116
Eco Loyalty [Member]
Derivatives, Fair Value [Line Items]
Long-lived assets held-for-use, fair value disclosure, net	$ 250,000			$ 250,000		$ 250,000
Assets held-for-sale, long lived, fair value disclosure		12,500,000
Assets held for sale, costs to sell		$ 12,250,000

Capital Stock, Treasury Stock_2

Capital Stock, Treasury Stock and Additional Paid-in Capital - Additional Information (Detail) - USD ($)	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 23, 2019
Stockholders' Equity Note [Abstract]
Stock repurchased during period, share	1,366,045
Treasury stock acquired, average cost per share		$ 3.40	$ 2.81
Treasury stock, shares, acquired		540,910	359,792
Stock repurchase program, authorized amount, additional				$ 10,000,000
Stock Issued During Period, Shares, Acquisitions	4,761,904
Shares Issued, Price Per Share	$ 2.10
Stock Repurchase Program Expiration Date	Apr. 28, 2020

Equity Compensation Plan - Addi

Equity Compensation Plan - Additional Information (Detail) - USD ($)	May 26, 2023	May 26, 2022	May 26, 2021	Aug. 23, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Dividends, total					$ 0	$ 0	$ 0
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value					0	$ 0	844,141
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding					0
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			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			$ 1.32
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					$ 181,232
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition					1 year 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate			46.75%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			5 years 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate			0.96%
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date			May 25, 2031
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number					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
Subsequent Event [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, Award Vesting Rights, Percentage	50.00%	50.00%
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			343,744	264,621	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			$ 2.99	$ 3.59	$ 2.99
Share-based compensation arrangement by share-based payment award, award vesting period				1 year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number					343,744	0
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, Award Vesting Rights, Percentage	50.00%	50.00%
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					$ 148,280	$ 0	0
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					$ 565,287
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition					1 year 4 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					$ 462,508	$ 0	$ 611,644
The Plan Member
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Common stock, reserved percentage					10.00%
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					264,621
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					250,000
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) - Non Vested Restricted Stock [Member] - $ / shares	May 26, 2021	Aug. 23, 2018	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Non-vested, January 1, 2021, Number of restricted shares			0
Granted, Number of restricted shares	343,744	264,621	343,744
Non-vested, December 31, 2021, Number of restricted shares			343,744
Non-vested, January 1, 2021, Weighted average grant date fair value per non-vested share			$ 0
Granted, Weighted average grant date fair value per non-vested share	$ 2.99	$ 3.59	2.99
Non-vested, Weighted average grant date fair value per non-vested share			$ 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]	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Option Shares | shares	250,000
Granted, Weighted-Average Exercise Price | $ / shares	$ 2.99
Exercised, Option Shares | shares	250,000
Exercised, Weighted-Average Exercise Price | $ / shares	$ 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, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net (loss)/income	$ (35,123,208)	$ 11,984,485	$ 2,093,124
Less: Undistributed earnings allocated to non-vested shares	0	0	(8,922)
Net (loss)/income attributable to common shareholders, basic	$ (35,123,208)	$ 11,984,485	$ 2,084,202
Weighted average number of shares outstanding, basic and diluted	37,858,437	38,357,893	39,800,434
(Loss)/earnings per share, basic and diluted	$ (0.93)	$ 0.31	$ 0.05

Earnings_(loss) per share - Add

Earnings/(loss) per share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Line Items]
Dilutive effect excluded from computation of earnings per share	343,744	0	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

Revenues - Summary of Analysis

Revenues - Summary of Analysis of Consolidated Statements of Operations (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 150,204,527	$ 145,003,021	$ 144,259,312
Total revenues	150,204,527	145,003,021	144,259,312
Time Charter [Member]
Disaggregation of Revenue [Line Items]
Revenues	105,966,167	101,837,425	97,249,537
Bareboat [Member]
Disaggregation of Revenue [Line Items]
Revenues	9,624,684	16,876,956	21,764,102
Voyage Charter [Member]
Disaggregation of Revenue [Line Items]
Revenues	33,813,496	25,161,401	24,018,198
Other Income Revenues [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 800,180	$ 1,127,239	$ 1,227,475

Revenues - Additional Informati

Revenues - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 150,204,527	$ 145,003,021	$ 144,259,312
Unearned revenue	1,789,720	1,353,290	439,135
Voyage Charters [Member]
Disaggregation of Revenue [Line Items]
Contract fulfilment cost	298,984	309,608
Voyage Charters [Member] | Demurrage [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 4,100,000	$ 2,400,000	$ 2,000,000

Vessel Operating Expenses - Ves

Vessel Operating Expenses - Vessel Operating Expenses (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Vessel Operating Expenses [Abstract]
Crew wages and related costs	$ 38,454,397	$ 32,073,496	$ 30,874,618
Insurance	2,196,444	1,889,041	2,162,523
Repairs and maintenance	7,282,481	6,590,006	5,677,033
Spares and consumable stores	9,123,975	7,990,022	7,783,902
Miscellaneous expenses	4,452,266	4,752,656	3,088,018
Total	$ 61,509,563	$ 53,295,221	$ 49,586,094

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Aug. 01, 2021	Dec. 31, 2021	Dec. 31, 2020	Feb. 13, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Line Items]
Contract receivable, due in next twelve months		$ 49,979,039
Contract receivable, due in year two		5,998,565
Contract receivable, due in year three		1,537,510
Long-term Debt		303,167,029	$ 353,529,457
Accrued Interest		$ 122,287
Equity Method Investment, Ownership Percentage		50.10%		51.00%	50.10%
MGC Aggressive Holdings Inc [Member]
Commitments and Contingencies Disclosure [Line Items]
Long-term Debt		$ 27,083,331
Accrued Interest		$ 86,497
Equity Method Investment, Ownership Percentage		49.00%
Percentage of outstanding Loan balance		49.00%
Financial Guarantee [Member] | Spacegas Inc., Financial Power Inc. and MGC Aggressive Holdings Inc. [Member]
Commitments and Contingencies Disclosure [Line Items]
Long-term Debt		$ 36,823,331
Time Charters [Member]
Commitments and Contingencies Disclosure [Line Items]
Contractual Obligation		$ 1,473,000
Settlement Agreement [Member]
Commitments and Contingencies Disclosure [Line Items]
Proceeds from Deposits from Customers	$ 765,031

Leases - The Company as Lesse_2

Leases - The Company as Lessee - Schedule of operating leases (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Non current assets	$ 104,168	$ 0
Liabilities	104,168
Office leases [Member]
Lessee, Lease, Description [Line Items]
Non current assets	104,168
Liabilities	$ 104,168

Leases - The Company as Lesse_3

Leases - The Company as Lessee - Schedule of company's lease expenses and sub-lease income (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Charter Hire Expenses [Member]
Lease expense for chartered-in contracts 12 months or less				$ 4,708,988
Lease expense for chartered-in contracts greater than 12 months			$ 318,606	1,560,000
Total charter hire expenses			318,606	6,268,988
General and Administrative Expense [Member]
Lease expense for office leases		$ 97,726	90,121	87,192
Revenue [member]
Sub lease income from chartered-in contracts greater than 12 months	[1]		$ 860,227	$ 3,091,390
[1]	The sub-lease income represents only time charter revenue earned on the chartered-in contracts greater than 12 months. There is additional revenue of $482,879 earned from voyage charters on the same chartered-in contract which is recorded in Revenues in our consolidated statement of operations for the year ended December 31, 2019 (2020 & 2021: nil). Additionally, there is revenue earned from time charters from chartered-in contracts 12 months or less which is included in Revenues in our consolidated statements of operations for the year ended December 31, 2019. No such contracts existed for the s ended December 31, 2020 and 2021.

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, 2021	Dec. 31, 2020
Discount rate upon adoption	5.60%	5.60%
2020	$ 107,520
Lessee, Operating Lease, Liability, Payments, Due	107,520
Present value of lease liability	104,168
Lease liabilities - short term	104,168
Total lease liabilities	104,168
Discount based on incremental borrowing rate	$ 3,352
Office leases [Member]
Discount rate upon adoption	5.60%
2020	$ 107,520
Lessee, Operating Lease, Liability, Payments, Due	107,520
Present value of lease liability	104,168
Lease liabilities - short term	104,168
Total lease liabilities	104,168
Discount based on incremental borrowing rate	$ 3,352

Leases - The Company as Lesse_5

Leases - The Company as Lessee - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2021EUR (€)
Operating Lease, Weighted Average Discount Rate, Percent	5.60%	5.60%		5.60%
Operating Lease, Payments	$ 97,726	$ 408,727	$ 1,647,192
Maximum [Member]
Lessee, Finance Lease, Remaining Lease Term		12 months
Office Space [Member]
Sale Type Minimum Lease Payments Transactions Within Two Years	$ 8,279			€ 7,000
Operating Lease, Weighted Average Discount Rate, Percent	5.60%			5.60%
Operating lease monthly rent expense		$ 6,500	7,345
Time Charter In Contracts [Member]
Sublease Income			$ 482,879
Time Charter In Contracts [Member] | Minimum [Member]
Operating Lease Term Of Contract			1 year
Time Charter In Contracts [Member] | Maximum [Member]
Operating Lease Term Of Contract		5 years
Charter Hire Expenses [Member]
Sale Type Minimum Lease Payments Transactions Within Two Years		$ 318,606	$ 1,560,000
Charter Hire Expenses [Member] | Bareboat Charters [Member]
Current Period Gain Recognized	$ 130,000		4,708,988
Gas Premiership And Gas Cathar [Member] | Charter Hire Expenses [Member] | Bareboat Charters [Member]
Sale Type Minimum Lease Payments Transactions Within Two Years		$ 318,606	$ 1,560,000
Astrid and Kazak [Member]
Sale leaseback transaction, term of lease	12 months