XML 55 R45.htm IDEA: XBRL DOCUMENT v3.5.0.2
Fair Value Measurements - Derivative Instrument Assets and Liabilities Measured at Fair Value (Details) - Fair value on a recurring basis - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Quoted prices in active markets for identical assets (Level 1)    
Assets    
Derivative instruments, at fair value $ 0 $ 0
Liabilities    
Derivative instruments, at fair value 0 0
Significant other observable inputs (Level 2)    
Assets    
Derivative instruments, at fair value 136,591 417,397
Liabilities    
Derivative instruments, at fair value 110,960 23,434
Significant unobservable inputs (Level 3)    
Assets    
Derivative instruments, at fair value 0 0
Liabilities    
Derivative instruments, at fair value 0 0
Fair value    
Assets    
Derivative instruments, at fair value 136,591 417,397
Liabilities    
Derivative instruments, at fair value $ 110,960 $ 23,434