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Finance leases (Details Textual)	1 Months Ended
	Nov. 30, 2018	Oct. 25, 2018	Jun. 26, 2018	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jan. 30, 2018 USD ($)	May 30, 2017 USD ($)
Number of vessel in operation				12
Finance Liability [Member]
Sellers Credit Note				$ 2,880,000	$ 2,880,000
Other Noncurrent Assets [Member]
Sellers Credit Note							$ 2,900,000
Vessels [Member] | Other Noncurrent Assets [Member]
Sellers Credit Note							$ 2,900,000
Ardmore Seavanguard and Ardmore Exporter [Member]
Sellers Credit Note						$ 1,400,000
Ardmore Seavanguard and Ardmore Exporter [Member] | Finance Liability [Member]
Sellers Credit Note						$ 1,400,000
Ocean Yield ASA [Member]
Lessee, Finance Lease, Term of Contract		2030 years
Debt Instrument, Basis Spread on Variable Rate		4.50%
Debt Instrument, Description of Variable Rate Basis		LIBOR plus 4.50%
CMBFL Leases No.1 to 4 [Member]
Lessee, Finance Lease, Term of Contract			2025 years
Debt Instrument, Basis Spread on Variable Rate		3.00%	3.10%
Debt Instrument, Description of Variable Rate Basis		LIBOR plus 3.00%	LIBOR plus 3.10%
China Huarong Leases [Member]
Debt Instrument, Basis Spread on Variable Rate	3.50%
Debt Instrument, Description of Variable Rate Basis	LIBOR plus 3.50%
Japanese Lease No.4 [Member]
Debt Instrument, Basis Spread on Variable Rate	3.20%
Debt Instrument, Description of Variable Rate Basis	LIBOR plus 3.20%

X

- Definition

The number of vessels in operations.

+ References

No definition available.

+ Details

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X

- Definition

It represents the amount of seller's credit .

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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X

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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X

- Definition

Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

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