XML 89 R77.htm IDEA: XBRL DOCUMENT v3.10.0.1
Variable Interest Entities Investment in Affiliates (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Equity Method [Roll Forward]        
Balance at December 31, 2016   $ 175,371 $ 169,208 $ 169,208
Equity in Earnings   3,447 22,385 48,346
Distributions       (42,183)
Asset Transfer       0
Balance at December 31, 2017       175,371
CNX Gathering LLC [Member]        
Equity Method [Roll Forward]        
Balance at December 31, 2016   141,117 151,075 151,075
Equity in Earnings       9,823
Distributions       (17,254)
Asset Transfer       (2,527)
Balance at December 31, 2017       141,117
CNXM [Member]        
Equity Method [Roll Forward]        
Balance at December 31, 2016   $ 34,254 18,133 18,133
Equity in Earnings       38,523
Distributions       (24,929)
Asset Transfer       2,527
Balance at December 31, 2017       $ 34,254
Other Operating Income (Expense) [Member] | CNX Gathering LLC [Member]        
Equity Method [Roll Forward]        
Equity in Earnings $ 284   2,150  
Other Operating Income (Expense) [Member] | CNXM [Member]        
Equity Method [Roll Forward]        
Equity in Earnings 9,712   19,784  
Transportation, Gathering and Compression [Member] | CNX Gathering LLC [Member]        
Equity Method [Roll Forward]        
Equity in Earnings 232   485  
Transportation, Gathering and Compression [Member] | CNXM [Member]        
Equity Method [Roll Forward]        
Equity in Earnings $ 31,695   $ 65,749