Pay vs Performance Disclosure - USD ($)

12 Months Ended

Mar. 31, 2024

Mar. 31, 2023

Mar. 31, 2022

Mar. 31, 2021

Pay vs Performance Disclosure

Pay vs Performance Disclosure, Table

									Value of Initial Fixed $100 Investment Based On:
Fiscal Year	Summary Compensation Table Total for PEO(1)		Compensation Actually Paid to PEO(2)		Average Summary Compensation Table Total for Non-PEO NEOs(3)		Average Compensation Actually Paid to Non-PEO NEOs(4)		Total Shareholder Return		Peer Group Total Shareholder Return(5)		Net Income (in millions)		Adjusted EBITDA(6) (in millions)
(a)	(b)		(c)		(d)		(e)		(f)		(g)		(h)		(i)
2024	$	4,296,185	$	5,896,984	$	1,920,336	$	2,556,567	$	805.83	$	668.20	$	307.4	$	417.4
2023	$	2,585,370	$	3,098,417	$	1,328,276	$	1,584,526	$	362.21	$	369.80	$	172.4	$	271.4
2022	$	2,359,438	$	2,448,479	$	1,020,559	$	1,093,937	$	193.15	$	265.06	$	71.9	$	161.1
2021	$	3,110,797	$	3,240,689	$	1,083,644	$	1,297,167	$	150.75	$	251.60	$	92.6	$	188.6

(1) The dollar amounts reported in column (b) are the amounts of total compensation reported for Mr. John C. Hadjipateras, who was our President and Chief Executive Officer for all years presented, in the “Total” column of the Summary Compensation Table (“SCT”).

(2) The dollar amounts reported in column (c) represent the amount of compensation actually paid to Mr. John C. Hadjipateras as computed in accordance with Item 402(v) of Regulation S-K (“CAP”). The reconciliation of the Summary Compensation Table Total to Compensation Actually Paid to PEO is as follows:

	2024		2023		2022		2021
Summary Compensation Table Total	$	4,296,185	$	2,585,370	$	2,359,438	$	3,110,797
(Minus): Grant Date Fair Value of Equity Awards Granted in Fiscal Year		(2,381,285)		(1,023,220)		(794,363)		(1,224,997)
Plus: Fair Value at Fiscal Year End of Outstanding and Unvested Equity Awards Granted in the Fiscal Year		2,166,567		905,520		519,100		-
Plus/(Minus): Change in Fair Value of Outstanding and Unvested Equity Awards Granted in Prior Fiscal Years		505,794		202,511		21,998		142,987
Plus: Fair Value at Vesting of Equity Awards Granted and Vested in the Fiscal Year		793,771		379,422		316,588		1,224,997
Plus/(Minus): Change in Fair Value as of the Vesting Date of Equity Awards Granted in Prior Fiscal Years that Vested in the Fiscal Year		515,952		48,814		25,718		(13,095)
(Minus): Fair Value as of the Prior Fiscal Year End of Equity Awards Granted in Prior Fiscal Years that Failed to Meet Vesting Conditions in the Fiscal Year		-		-		-		-
Plus: Value of Dividends or Other Earnings Paid Prior to the Vesting Date on Equity Awards Not Otherwise Reflected in Total Compensation		-		-		-		-
Compensation Actually Paid	$	5,896,984	$	3,098,417	$	2,448,479	$	3,240,689

(3) The dollar amounts reported in column (d) represent the average of the amounts reported for our non-PEO NEOs as a group in the “Total” column of the SCT for each applicable year. The non-PEO NEOs included for purposes of calculating the average amounts in each applicable year are as follows: Messrs. John C. Lycouris, Theodore B. Young, Tim T. Hansen, and Alexander C. Hadjipateras.  

(4) The dollar amounts reported in column (e) represent the average amount of CAP for the non-PEO NEOs as a group, as computed in accordance with Item 402(v) of Regulation S-K. The reconciliation of the Average Summary Compensation Table Total to Compensation Actually Paid to Non-PEO NEOs is as follows:

	2024		2023		2022		2021
Summary Compensation Table Total	$	1,920,336	$	1,328,276	$	1,020,559	$	1,083,644
(Minus): Grant Date Fair Value of Equity Awards Granted in Fiscal Year		(869,835)		(463,455)		(224,614)		(292,481)
Plus: Fair Value at Fiscal Year End of Outstanding and Unvested Equity Awards Granted in the Fiscal Year		732,336		406,088		176,966		410,313
Plus/(Minus): Change in Fair Value of Outstanding and Unvested Equity Awards Granted in Prior Fiscal Years		207,113		122,661		36,975		63,814
Plus: Fair Value at Vesting of Equity Awards Granted and Vested in the Fiscal Year		331,046		162,815		62,228		35,919
Plus/(Minus): Change in Fair Value as of the Vesting Date of Equity Awards Granted in Prior Fiscal Years that Vested in the Fiscal Year		235,571		28,141		21,823		(4,042)
(Minus): Fair Value as of the Prior Fiscal Year End of Equity Awards Granted in Prior Fiscal Years that Failed to Meet Vesting Conditions in the Fiscal Year		-		-		-		-
Plus: Value of Dividends or Other Earnings Paid Prior to the Vesting Date on Equity Awards Not Otherwise Reflected in Total Compensation		-		-		-		-
Compensation Actually Paid	$	2,556,567	$	1,584,526	$	1,093,937	$	1,297,167

(5) The dollar amounts reported in column (g) represent the weighted peer group total shareholder return, weighted according to the respective companies’ stock market capitalization at the beginning of each period for which a return is indicated. The peer group consists of the following direct competitors on a line-of-business basis: BWLPG, NVGS and Avance. NVGS’s common stock trades on the New York Stock Exchange, while the common stock of Avance and BWLPG primarily trade on the Oslo Stock Exchange in NOK. For the purposes of the below comparison, the returns for Avance and BWLPG were converted into U.S. dollars based on the relevant NOK to USD exchange rate.

(6) The dollar amounts reported in column (i) represent Adjusted EBITDA as defined and presented in the CD&A above.

Company Selected Measure Name

Adjusted EBITDA

Named Executive Officers, Footnote

(1) The dollar amounts reported in column (b) are the amounts of total compensation reported for Mr. John C. Hadjipateras, who was our President and Chief Executive Officer for all years presented, in the “Total” column of the Summary Compensation Table (“SCT”).

(3) The dollar amounts reported in column (d) represent the average of the amounts reported for our non-PEO NEOs as a group in the “Total” column of the SCT for each applicable year. The non-PEO NEOs included for purposes of calculating the average amounts in each applicable year are as follows: Messrs. John C. Lycouris, Theodore B. Young, Tim T. Hansen, and Alexander C. Hadjipateras.  

Peer Group Issuers, Footnote

(5) The dollar amounts reported in column (g) represent the weighted peer group total shareholder return, weighted according to the respective companies’ stock market capitalization at the beginning of each period for which a return is indicated. The peer group consists of the following direct competitors on a line-of-business basis: BWLPG, NVGS and Avance. NVGS’s common stock trades on the New York Stock Exchange, while the common stock of Avance and BWLPG primarily trade on the Oslo Stock Exchange in NOK. For the purposes of the below comparison, the returns for Avance and BWLPG were converted into U.S. dollars based on the relevant NOK to USD exchange rate.

PEO Total Compensation Amount

$ 4,296,185

$ 2,585,370

$ 2,359,438

$ 3,110,797

PEO Actually Paid Compensation Amount

$ 5,896,984

3,098,417

2,448,479

3,240,689

Adjustment To PEO Compensation, Footnote

(2) The dollar amounts reported in column (c) represent the amount of compensation actually paid to Mr. John C. Hadjipateras as computed in accordance with Item 402(v) of Regulation S-K (“CAP”). The reconciliation of the Summary Compensation Table Total to Compensation Actually Paid to PEO is as follows:

	2024		2023		2022		2021
Summary Compensation Table Total	$	4,296,185	$	2,585,370	$	2,359,438	$	3,110,797
(Minus): Grant Date Fair Value of Equity Awards Granted in Fiscal Year		(2,381,285)		(1,023,220)		(794,363)		(1,224,997)
Plus: Fair Value at Fiscal Year End of Outstanding and Unvested Equity Awards Granted in the Fiscal Year		2,166,567		905,520		519,100		-
Plus/(Minus): Change in Fair Value of Outstanding and Unvested Equity Awards Granted in Prior Fiscal Years		505,794		202,511		21,998		142,987
Plus: Fair Value at Vesting of Equity Awards Granted and Vested in the Fiscal Year		793,771		379,422		316,588		1,224,997
Plus/(Minus): Change in Fair Value as of the Vesting Date of Equity Awards Granted in Prior Fiscal Years that Vested in the Fiscal Year		515,952		48,814		25,718		(13,095)
(Minus): Fair Value as of the Prior Fiscal Year End of Equity Awards Granted in Prior Fiscal Years that Failed to Meet Vesting Conditions in the Fiscal Year		-		-		-		-
Plus: Value of Dividends or Other Earnings Paid Prior to the Vesting Date on Equity Awards Not Otherwise Reflected in Total Compensation		-		-		-		-
Compensation Actually Paid	$	5,896,984	$	3,098,417	$	2,448,479	$	3,240,689

Non-PEO NEO Average Total Compensation Amount

$ 1,920,336

1,328,276

1,020,559

1,083,644

Non-PEO NEO Average Compensation Actually Paid Amount

$ 2,556,567

1,584,526

1,093,937

1,297,167

Adjustment to Non-PEO NEO Compensation Footnote

(4) The dollar amounts reported in column (e) represent the average amount of CAP for the non-PEO NEOs as a group, as computed in accordance with Item 402(v) of Regulation S-K. The reconciliation of the Average Summary Compensation Table Total to Compensation Actually Paid to Non-PEO NEOs is as follows:

	2024		2023		2022		2021
Summary Compensation Table Total	$	1,920,336	$	1,328,276	$	1,020,559	$	1,083,644
(Minus): Grant Date Fair Value of Equity Awards Granted in Fiscal Year		(869,835)		(463,455)		(224,614)		(292,481)
Plus: Fair Value at Fiscal Year End of Outstanding and Unvested Equity Awards Granted in the Fiscal Year		732,336		406,088		176,966		410,313
Plus/(Minus): Change in Fair Value of Outstanding and Unvested Equity Awards Granted in Prior Fiscal Years		207,113		122,661		36,975		63,814
Plus: Fair Value at Vesting of Equity Awards Granted and Vested in the Fiscal Year		331,046		162,815		62,228		35,919
Plus/(Minus): Change in Fair Value as of the Vesting Date of Equity Awards Granted in Prior Fiscal Years that Vested in the Fiscal Year		235,571		28,141		21,823		(4,042)
(Minus): Fair Value as of the Prior Fiscal Year End of Equity Awards Granted in Prior Fiscal Years that Failed to Meet Vesting Conditions in the Fiscal Year		-		-		-		-
Plus: Value of Dividends or Other Earnings Paid Prior to the Vesting Date on Equity Awards Not Otherwise Reflected in Total Compensation		-		-		-		-
Compensation Actually Paid	$	2,556,567	$	1,584,526	$	1,093,937	$	1,297,167

Total Shareholder Return Amount

$ 805.83

362.21

193.15

150.75

Peer Group Total Shareholder Return Amount

668.20

369.80

265.06

251.60

Net Income (Loss)

$ 307,400,000

$ 172,400,000

$ 71,900,000

$ 92,600,000

Company Selected Measure Amount

417,400,000

271,400,000

161,100,000

188,600,000

PEO Name

Mr. John C. Hadjipateras

Measure:: 1

Pay vs Performance Disclosure

Non-GAAP Measure Description

(6) The dollar amounts reported in column (i) represent Adjusted EBITDA as defined and presented in the CD&A above.

PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

$ (2,381,285)

$ (1,023,220)

$ (794,363)

$ (1,224,997)

PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

2,166,567

905,520

519,100

PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

505,794

202,511

21,998

142,987

PEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

793,771

379,422

316,588

1,224,997

PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

515,952

48,814

25,718

(13,095)

Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

(869,835)

(463,455)

(224,614)

(292,481)

Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

732,336

406,088

176,966

410,313

Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

207,113

122,661

36,975

63,814

Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

331,046

162,815

62,228

35,919

Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

$ 235,571

$ 28,141

$ 21,823

$ (4,042)