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Overview (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 t Vessel Fleet | Dec. 31, 2012 Vessel
Background [Abstract] |  |
Number of vessels in operation | 8 |
Number of vessels under construction |  | 12
Number of vessels acquired | 1 |
Average age of vessels | 5 years 10 months 24 days |
Total number of fleet | 21 |
Management and organizational structure [Abstract] |  |
Common stock, issued through IPO (in shares) | 10,000,000 |
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, IPO offering price (in dollars per share) | $ 14 |
Gross proceed from IPO | $ 140 |
Number of shares exchanged for reorganization (in shares) | 8,049,500 |
Schedule of fleet [Abstract] |  |
Deadweight | 823,804 |
Ardmore Seavaliant February 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 49,998 |
IMO | 3 |
Ardmore Seaventure June 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 49,998 |
IMO | 3 |
Ardmore Seatrader December 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 47,141 |
IMO | 0 |
Ardmore Seamaster September 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 45,840 |
IMO | 3 |
Ardmore Seafarer August 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 45,744 |
IMO | 0 |
Ardmore Centurion November 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 29,006 |
IMO | 2 |
Ardmore Calypso January 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 17,589 |
IMO | 2 |
Ardmore Capella January 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 17,567 |
IMO | 2 |
Ardmore Seamariner October 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 45,726 |
IMO | 0 |
Ardmore Seavantage January 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 49,997 |
IMO | 3 |
Ardmore Seavanguard February 2014 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 49,998 |
IMO | 3 |
SPP Hull S-1162 1Q15 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 50,300 |
IMO | 3 |
SPP Hull S-1163 2Q15 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 50,300 |
IMO | 3 |
SPP Hull S-1171 2Q15 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 50,300 |
IMO | 3 |
SPP Hull S-1172 3Q15 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 50,300 |
IMO | 3 |
HMD Hull H-2480 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 37,000 |
IMO | 2 |
HMD Hull H-2481 1Q15 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 37,000 |
IMO | 2 |
FKA Hull N-2062 4Q14 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 25,000 |
IMO | 2 |
FKA Hull N-2063 1Q15 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 25,000 |
IMO | 2 |
FKA Hull N-2065 3Q15 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 25,000 |
IMO | 2 |
FKA Hull N-2067 4Q15 [Member] |  |
Schedule of fleet [Abstract] |  |
Deadweight | 25,000 |
IMO | 2 |
GA Holdings LLC [Member] |  |
Management and organizational structure [Abstract] |  |
Ownership interest (in hundredths) | 44.60% |
Public Investor [Member] |  |
Management and organizational structure [Abstract] |  |
Ownership interest (in hundredths) | 55.40% |
Ardmore Seavaliant [Member] |  |
Vessels [Abstract] |  |
Time charter employment period of vessels | 1 year |
Ardmore Seaventure [Member] |  |
Vessels [Abstract] |  |
Time charter employment period of vessels | 1 year |

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