Transactions with Related Parties - Omnibus Agreement (Details) - USD ($)
$ in Thousands
12 Months Ended
Oct. 15, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Related Party Transaction [Line Items]        
Related party, initial amount for certain general and administrative services     $ 3,500 $ 3,000
Selling, general & administrative - related party   $ 9,735 6,905 $ 1,475
Limited Partner | USD Group LLC | Omnibus Agreement [Member]        
Related Party Transaction [Line Items]        
Related party, initial amount for certain general and administrative services $ 4,900      
Related party, fixed annual fee $ 2,500      
Selling, general & administrative - related party   4,700 400  
Contract agreement, term 7 years      
Notification period for sale of assets 60 days      
Good faith negotiation period 60 days      
Period for transfer of assets to third party buyer, after good faith negotiation 180 days      
Limited Partner | USDG [Member]        
Related Party Transaction [Line Items]        
Accounts payable - related party   $ 200 $ 500