XML 98 R122.htm IDEA: XBRL DOCUMENT v2.4.1.9
Income Taxes (Predecessor) (Details) (U.S.)
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Income Taxes      
Tax rate on foreign shipping income (as a percent) 4.00%lpg_IncomeTaxRateOnDomesticSourceShippingIncome 4.00%lpg_IncomeTaxRateOnDomesticSourceShippingIncome  
Predecessor      
Income Taxes      
Tax rate on foreign shipping income (as a percent)     4.00%lpg_IncomeTaxRateOnDomesticSourceShippingIncome
/ us-gaap_StatementGeographicalAxis
= country_US
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember