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Equity Based Compensation (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Award vesting period (years) 5 years  
Total unrecognized compensation costs $ 0.8us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized  
Weighted average period of recognition (years) 2 years 9 months 0 days  
Selling, General and Administrative Expenses [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Unit-based compensation expense $ 0.1us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
$ 0.1us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember