XML 67 R52.htm IDEA: XBRL DOCUMENT v3.10.0.1
Derivative Instruments - Impact of Netting Agreements and Margin Deposits (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Asset derivatives:    
Derivative instruments, recorded in the Condensed Consolidated Balance Sheet, gross $ 315,564 $ 241,952
Liability derivatives:    
Derivative instruments, recorded in the Condensed Consolidated Balance Sheet, gross 183,677 139,089
Commodity derivatives    
Asset derivatives:    
Derivative instruments, recorded in the Condensed Consolidated Balance Sheet, gross 315,564 241,952
Derivative instruments subject to master netting agreements (104,559) (86,856)
Margin deposits remitted to counterparties 0 0
Derivative instruments, net 211,005 155,096
Liability derivatives:    
Derivative instruments, recorded in the Condensed Consolidated Balance Sheet, gross 183,677 139,089
Derivative instruments subject to master netting agreements (104,559) (86,856)
Margin deposits remitted to counterparties (11,110) 0
Derivative instruments, net $ 68,008 $ 52,233