Represents the brokerage commission fee on exercised purchase option excluding deposit.

No definition available.

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- Definition

Represents the amount of balloon payment.

+ References

No definition available.

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- Definition

Represents the deposit value held by the buyer from sale of property, plant and equipment.

+ References

No definition available.

+ Details

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- Definition

The estimated amount of financing costs.

+ References

No definition available.

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- Definition

The monthly brokerage commission percentage.

+ References

No definition available.

+ Details

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- Definition

Represents the number of year until the purchase option becomes exercisable.

+ References

No definition available.

+ Details

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- Definition

Represents the value of property plant and equipment transferred.

+ References

No definition available.

+ Details

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- Definition

Represents the term of the bareboat charter agreement.

+ References

No definition available.

+ Details

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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

Amount of the required periodic payments applied to principal.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.22)
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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585

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Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of vesting of share-based compensation awards.

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Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Subsequent Events (Details) - USD ($)								12 Months Ended
Subsequent Events (Details) - USD ($)	Jun. 26, 2018	Jun. 25, 2018	Jun. 20, 2018	Jun. 15, 2018	Jun. 11, 2018	Jun. 04, 2018	Nov. 07, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Apr. 30, 2014
Subsequent Events
Proceeds from sale of vessel										$ 2,713,660
Number of common shares reserved for issuance under the Equity Incentive Plan											2,850,000
2017 Bridge Loan
Subsequent Events
Repayment of debt			$ 44,600,000			$ 22,300,000	$ 30,100,000
2017 Bridge Loan \| Subsequent events
Subsequent Events
Repayment of debt			44,600,000			22,300,000
CJNP Japanese Financing \| Subsequent events
Subsequent Events
Stated rate (as a percent)					6.00%
Estimated financing cost to be incurred					$ 100,000
Monthly brokerage commission (as a percent)					1.25%
Brokerage commission fee on exercised purchase option excluding buyer deposit (as a percent)					1.00%
Principal payment frequency					monthly
Periodic principal payment amount					$ 100,000
Balloon payment amount					13,000,000
CMNL Japanese Financing \| Subsequent events
Subsequent Events
Stated rate (as a percent)		6.00%
Estimated financing cost to be incurred		$ 100,000
Monthly brokerage commission (as a percent)		1.25%
Brokerage commission fee on exercised purchase option excluding buyer deposit (as a percent)		1.00%
Principal payment frequency		monthly
Periodic principal payment amount		$ 100,000
Balloon payment amount		11,000,000
CNML Japanese Financing \| Subsequent events
Subsequent Events
Stated rate (as a percent)	6.00%
Estimated financing cost to be incurred	$ 100,000
Monthly brokerage commission (as a percent)	1.25%
Brokerage commission fee on exercised purchase option excluding buyer deposit (as a percent)	1.00%
Principal payment frequency	monthly
Periodic principal payment amount	$ 100,000
Balloon payment amount	13,000,000
CJNP LPG Transport LLC \| Subsequent events
Subsequent Events
Value of vessel transferred					$ 48,300,000
Term of Charter Agreement					6 years
Period until purchase option exercisable					2 years
Proceeds from sale of vessel					$ 21,700,000
Deposit retained by buyer					$ 26,600,000
CJNP LPG Transport LLC \| 2017 Bridge Loan \| Subsequent events
Subsequent Events
Repayment of debt						$ 22,300,000
CMNL LPG Transport LLC \| Subsequent events
Subsequent Events
Value of vessel transferred		$ 45,800,000
Term of Charter Agreement		7 years
Period until purchase option exercisable		2 years
Proceeds from sale of vessel		$ 20,600,000
Deposit retained by buyer		$ 25,200,000
CMNL LPG Transport LLC \| 2017 Bridge Loan \| Subsequent events
Subsequent Events
Repayment of debt			21,200,000
CNML LPG Transport LLC \| Subsequent events
Subsequent Events
Value of vessel transferred	$ 50,800,000
Term of Charter Agreement	7 years
Period until purchase option exercisable	2 years
Proceeds from sale of vessel	$ 22,900,000
Deposit retained by buyer	$ 27,900,000
CNML LPG Transport LLC \| 2017 Bridge Loan \| Subsequent events
Subsequent Events
Repayment of debt			$ 23,400,000
Restricted stock awards \| Certain officers and employees
Subsequent Events
Number of common shares reserved for issuance under the Equity Incentive Plan								259,800	250,000
Restricted stock awards \| Certain officers and employees \| Subsequent events
Subsequent Events
Number of common shares reserved for issuance under the Equity Incentive Plan				200,000
Restricted stock awards \| Vest immediately
Subsequent Events
Vesting (as a percent)								25.00%	25.00%
Restricted stock awards \| Vest immediately \| Certain officers and employees \| Subsequent events
Subsequent Events
Vesting (as a percent)				25.00%
Restricted stock awards \| Vest one year after grant
Subsequent Events
Vesting (as a percent)								25.00%	25.00%
Vesting period of shares under the equity incentive plan								1 year	1 year
Restricted stock awards \| Vest one year after grant \| Certain officers and employees \| Subsequent events
Subsequent Events
Vesting (as a percent)				25.00%
Vesting period of shares under the equity incentive plan				1 year
Restricted stock awards \| Vest two years after grant
Subsequent Events
Vesting (as a percent)								25.00%	25.00%
Vesting period of shares under the equity incentive plan								2 years	2 years
Restricted stock awards \| Vest two years after grant \| Certain officers and employees \| Subsequent events
Subsequent Events
Vesting (as a percent)				25.00%
Vesting period of shares under the equity incentive plan				2 years
Restricted stock awards \| Vest three years after grant
Subsequent Events
Vesting (as a percent)								25.00%	25.00%
Vesting period of shares under the equity incentive plan								3 years	3 years
Restricted stock awards \| Vest three years after grant \| Certain officers and employees \| Subsequent events
Subsequent Events
Vesting (as a percent)				25.00%
Vesting period of shares under the equity incentive plan				3 years