XML 54 R37.htm IDEA: XBRL DOCUMENT v3.20.1
Transactions with related parties - Dynagas Ltd. (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2013
Related Party Transaction        
Management services agreement initial termination date December 31, 2020      
Daily management fee $ 3,000 $ 2,900 $ 2,800 $ 2,500
Management fees annual upward percentage adjustment 3.00%      
Charter Hire Commission payable to the Management company 1.25%      
Lump sum payable to the management company for the supervision of vessels construction $ 700      
Cancellation of management agreement termination fee $ 19,600,000      
Automatic extension of Management Agreements increments 8 years      
Management agreement terms The Management Agreements will terminate automatically after a change of control of the owners and/or of the owners’ ultimate parent, in which case an amount equal to the estimated remaining fees, but in any case not less than for a period of 36 months and not more than 60 months, will become payable to the Manager.      
Maximum        
Related Party Transaction        
Period for calculation of management agreement termination fee   60 months    
Minimum        
Related Party Transaction        
Period for calculation of management agreement termination fee   36 months