Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Fair Value of Assets and Liabilities Measured on a Recurring Basis (Details)

v3.20.2
Fair Value Measurement - Fair Value of Assets and Liabilities Measured on a Recurring Basis (Details) - Recurring - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Liabilities:    
Total liabilities $ 13,745 $ 7,832
Level 2    
Assets:    
Total assets 151 213
Level 2 | Interest rate swap instruments    
Assets:    
Total assets 0 15
Liabilities:    
Liability derivatives 11,679 6,236
Level 2 | Commodity swap instruments    
Assets:    
Total assets 151 198
Level 2 | Interest make-whole provisions    
Liabilities:    
Liability derivatives 1,388 918
Level 3    
Liabilities:    
Contingent consideration $ 678 $ 678