Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Details)

v3.20.2
FAIR VALUE MEASUREMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jan. 02, 2020
Jun. 30, 2020
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Liabilities:          
Fair value of contingent consideration asset $ 23,100   $ 19,800    
Contingent consideration, gain (loss) due to change in value   $ (3,200) (3,000)    
Contingent consideration, settlements     300    
Asset retirement obligation capitalized     1,553 $ 5,153  
Level 1          
Assets:          
Derivative Instruments   0 0   $ 0
Liabilities:          
Derivative Instruments   0 0   0
Level 2          
Assets:          
Derivative Instruments   57,486 57,486   126,764
Liabilities:          
Derivative Instruments   54,155 54,155   53,438
Level 3          
Assets:          
Derivative Instruments   0 0   0
Liabilities:          
Derivative Instruments   $ 0 0   $ 0
Prepaid Expenses and Other Current Assets          
Liabilities:          
Fair value of contingent consideration asset     800    
Other Noncurrent Assets          
Liabilities:          
Fair value of contingent consideration asset     $ 19,000