Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Financial Assets and Liabilities (Details)

v3.20.1
Fair Value Measurements - Financial Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Earn-out obligation - short-term $ 5,300 $ 31,700
Earn-out obligation - long-term 0 5,000
Fair Value, Measurements, Recurring | Level 1 | Other assets    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Non-COLI assets held in Deferred Supplemental Compensation Plan 946 710
Fair Value, Measurements, Recurring | Level 2 | Accrued expenses    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swap agreements 2,636 1,473
Fair Value, Measurements, Recurring | Level 3 | Earn-out obligation    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Earn-out obligation - short-term 5,300 31,700
Earn-out obligation - long-term $ 0 $ 5,000